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_smtcomp.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 05:47:39,256 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-25 05:47:39,258 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-25 05:47:39,273 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-25 05:47:39,274 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-25 05:47:39,275 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-25 05:47:39,276 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-25 05:47:39,277 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-25 05:47:39,280 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-25 05:47:39,280 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-25 05:47:39,281 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-25 05:47:39,282 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-25 05:47:39,283 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-25 05:47:39,284 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-25 05:47:39,285 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-25 05:47:39,288 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-25 05:47:39,290 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-25 05:47:39,292 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-25 05:47:39,294 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-25 05:47:39,296 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-25 05:47:39,298 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-25 05:47:39,299 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-25 05:47:39,299 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-25 05:47:39,300 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-25 05:47:39,301 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-25 05:47:39,302 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-25 05:47:39,302 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-25 05:47:39,303 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-25 05:47:39,303 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-25 05:47:39,304 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-25 05:47:39,304 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-25 05:47:39,304 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_smtcomp.epf [2018-01-25 05:47:39,314 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-25 05:47:39,314 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-25 05:47:39,315 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-25 05:47:39,315 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-25 05:47:39,315 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-25 05:47:39,315 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-25 05:47:39,315 INFO L133 SettingsManager]: * Precise comparison operator=true [2018-01-25 05:47:39,315 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-25 05:47:39,316 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-25 05:47:39,316 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-25 05:47:39,316 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-25 05:47:39,316 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-25 05:47:39,317 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-25 05:47:39,317 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-25 05:47:39,317 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-25 05:47:39,317 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-25 05:47:39,317 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-25 05:47:39,317 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-25 05:47:39,317 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-25 05:47:39,318 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-25 05:47:39,318 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-25 05:47:39,318 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-25 05:47:39,318 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-25 05:47:39,318 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-25 05:47:39,318 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-25 05:47:39,319 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-25 05:47:39,319 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-25 05:47:39,319 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-25 05:47:39,319 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-25 05:47:39,319 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-25 05:47:39,319 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-25 05:47:39,320 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-25 05:47:39,320 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-25 05:47:39,320 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-25 05:47:39,321 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-25 05:47:39,321 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-25 05:47:39,355 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-25 05:47:39,366 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-25 05:47:39,370 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-25 05:47:39,372 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-25 05:47:39,372 INFO L276 PluginConnector]: CDTParser initialized [2018-01-25 05:47:39,373 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/memsafety-ext/tree_stack_true-valid-memsafety_false-termination.i [2018-01-25 05:47:39,549 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-25 05:47:39,554 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-25 05:47:39,555 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-25 05:47:39,555 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-25 05:47:39,560 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-25 05:47:39,561 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 05:47:39" (1/1) ... [2018-01-25 05:47:39,564 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62fcc6d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 05:47:39, skipping insertion in model container [2018-01-25 05:47:39,564 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 05:47:39" (1/1) ... [2018-01-25 05:47:39,577 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 05:47:39,616 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 05:47:39,742 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 05:47:39,768 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 05:47:39,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 05:47:39 WrapperNode [2018-01-25 05:47:39,779 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-25 05:47:39,780 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-25 05:47:39,781 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-25 05:47:39,781 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-25 05:47:39,798 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 05:47:39" (1/1) ... [2018-01-25 05:47:39,798 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 05:47:39" (1/1) ... [2018-01-25 05:47:39,809 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 05:47:39" (1/1) ... [2018-01-25 05:47:39,810 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 05:47:39" (1/1) ... [2018-01-25 05:47:39,818 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 05:47:39" (1/1) ... [2018-01-25 05:47:39,824 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 05:47:39" (1/1) ... [2018-01-25 05:47:39,826 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 05:47:39" (1/1) ... [2018-01-25 05:47:39,829 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-25 05:47:39,830 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-25 05:47:39,830 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-25 05:47:39,830 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-25 05:47:39,831 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 05:47:39" (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 05:47:39,896 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-25 05:47:39,896 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-25 05:47:39,896 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-25 05:47:39,896 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-25 05:47:39,897 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-25 05:47:39,897 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-25 05:47:39,897 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-25 05:47:39,897 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-25 05:47:39,897 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-25 05:47:39,897 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-25 05:47:39,898 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-25 05:47:39,898 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-25 05:47:39,898 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-25 05:47:39,898 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-25 05:47:40,428 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-25 05:47:40,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 05:47:40 BoogieIcfgContainer [2018-01-25 05:47:40,429 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-25 05:47:40,430 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-25 05:47:40,430 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-25 05:47:40,432 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-25 05:47:40,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.01 05:47:39" (1/3) ... [2018-01-25 05:47:40,433 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25fc81a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 05:47:40, skipping insertion in model container [2018-01-25 05:47:40,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 05:47:39" (2/3) ... [2018-01-25 05:47:40,434 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25fc81a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 05:47:40, skipping insertion in model container [2018-01-25 05:47:40,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 05:47:40" (3/3) ... [2018-01-25 05:47:40,436 INFO L105 eAbstractionObserver]: Analyzing ICFG tree_stack_true-valid-memsafety_false-termination.i [2018-01-25 05:47:40,443 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-25 05:47:40,450 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 65 error locations. [2018-01-25 05:47:40,491 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-25 05:47:40,491 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-25 05:47:40,491 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-25 05:47:40,491 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-25 05:47:40,492 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-25 05:47:40,492 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-25 05:47:40,492 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-25 05:47:40,492 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-25 05:47:40,492 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-25 05:47:40,512 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states. [2018-01-25 05:47:40,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-25 05:47:40,518 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 05:47:40,519 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 05:47:40,519 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 05:47:40,523 INFO L82 PathProgramCache]: Analyzing trace with hash -1338247859, now seen corresponding path program 1 times [2018-01-25 05:47:40,525 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 05:47:40,567 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:47:40,568 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 05:47:40,568 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:47:40,568 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 05:47:40,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 05:47:40,610 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 05:47:40,671 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 05:47:40,673 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 05:47:40,673 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 05:47:40,673 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 05:47:40,677 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 05:47:40,687 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 05:47:40,688 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 05:47:40,690 INFO L87 Difference]: Start difference. First operand 147 states. Second operand 4 states. [2018-01-25 05:47:41,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 05:47:41,061 INFO L93 Difference]: Finished difference Result 298 states and 326 transitions. [2018-01-25 05:47:41,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-25 05:47:41,062 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-25 05:47:41,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 05:47:41,071 INFO L225 Difference]: With dead ends: 298 [2018-01-25 05:47:41,072 INFO L226 Difference]: Without dead ends: 158 [2018-01-25 05:47:41,075 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 05:47:41,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2018-01-25 05:47:41,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 142. [2018-01-25 05:47:41,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2018-01-25 05:47:41,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 152 transitions. [2018-01-25 05:47:41,112 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 152 transitions. Word has length 8 [2018-01-25 05:47:41,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 05:47:41,112 INFO L432 AbstractCegarLoop]: Abstraction has 142 states and 152 transitions. [2018-01-25 05:47:41,112 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 05:47:41,112 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 152 transitions. [2018-01-25 05:47:41,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-25 05:47:41,113 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 05:47:41,113 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 05:47:41,113 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 05:47:41,113 INFO L82 PathProgramCache]: Analyzing trace with hash -1338247858, now seen corresponding path program 1 times [2018-01-25 05:47:41,113 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 05:47:41,114 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:47:41,114 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 05:47:41,114 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:47:41,114 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 05:47:41,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 05:47:41,136 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 05:47:41,212 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 05:47:41,212 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 05:47:41,212 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 05:47:41,212 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 05:47:41,214 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 05:47:41,214 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 05:47:41,214 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 05:47:41,214 INFO L87 Difference]: Start difference. First operand 142 states and 152 transitions. Second operand 4 states. [2018-01-25 05:47:41,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 05:47:41,485 INFO L93 Difference]: Finished difference Result 142 states and 152 transitions. [2018-01-25 05:47:41,485 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-25 05:47:41,485 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-25 05:47:41,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 05:47:41,487 INFO L225 Difference]: With dead ends: 142 [2018-01-25 05:47:41,487 INFO L226 Difference]: Without dead ends: 140 [2018-01-25 05:47:41,488 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 05:47:41,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2018-01-25 05:47:41,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2018-01-25 05:47:41,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2018-01-25 05:47:41,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 150 transitions. [2018-01-25 05:47:41,501 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 150 transitions. Word has length 8 [2018-01-25 05:47:41,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 05:47:41,501 INFO L432 AbstractCegarLoop]: Abstraction has 140 states and 150 transitions. [2018-01-25 05:47:41,502 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 05:47:41,502 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 150 transitions. [2018-01-25 05:47:41,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-01-25 05:47:41,502 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 05:47:41,503 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 05:47:41,503 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 05:47:41,503 INFO L82 PathProgramCache]: Analyzing trace with hash 1963213562, now seen corresponding path program 1 times [2018-01-25 05:47:41,503 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 05:47:41,504 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:47:41,505 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 05:47:41,505 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:47:41,505 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 05:47:41,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 05:47:41,521 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 05:47:41,565 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 05:47:41,565 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 05:47:41,565 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 05:47:41,565 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 05:47:41,566 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 05:47:41,566 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 05:47:41,566 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 05:47:41,566 INFO L87 Difference]: Start difference. First operand 140 states and 150 transitions. Second operand 4 states. [2018-01-25 05:47:41,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 05:47:41,689 INFO L93 Difference]: Finished difference Result 164 states and 175 transitions. [2018-01-25 05:47:41,689 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 05:47:41,689 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-01-25 05:47:41,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 05:47:41,691 INFO L225 Difference]: With dead ends: 164 [2018-01-25 05:47:41,691 INFO L226 Difference]: Without dead ends: 148 [2018-01-25 05:47:41,692 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 05:47:41,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2018-01-25 05:47:41,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 127. [2018-01-25 05:47:41,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-01-25 05:47:41,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 138 transitions. [2018-01-25 05:47:41,739 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 138 transitions. Word has length 14 [2018-01-25 05:47:41,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 05:47:41,740 INFO L432 AbstractCegarLoop]: Abstraction has 127 states and 138 transitions. [2018-01-25 05:47:41,740 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 05:47:41,740 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 138 transitions. [2018-01-25 05:47:41,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-01-25 05:47:41,741 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 05:47:41,741 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 05:47:41,741 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 05:47:41,741 INFO L82 PathProgramCache]: Analyzing trace with hash 1963213563, now seen corresponding path program 1 times [2018-01-25 05:47:41,741 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 05:47:41,742 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:47:41,743 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 05:47:41,743 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:47:41,743 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 05:47:41,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 05:47:41,758 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 05:47:41,841 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 05:47:41,842 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 05:47:41,842 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 05:47:41,842 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 05:47:41,842 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 05:47:41,843 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 05:47:41,843 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 05:47:41,843 INFO L87 Difference]: Start difference. First operand 127 states and 138 transitions. Second operand 5 states. [2018-01-25 05:47:42,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 05:47:42,062 INFO L93 Difference]: Finished difference Result 185 states and 203 transitions. [2018-01-25 05:47:42,062 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 05:47:42,062 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-01-25 05:47:42,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 05:47:42,066 INFO L225 Difference]: With dead ends: 185 [2018-01-25 05:47:42,066 INFO L226 Difference]: Without dead ends: 173 [2018-01-25 05:47:42,067 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 05:47:42,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2018-01-25 05:47:42,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 157. [2018-01-25 05:47:42,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-01-25 05:47:42,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 180 transitions. [2018-01-25 05:47:42,079 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 180 transitions. Word has length 14 [2018-01-25 05:47:42,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 05:47:42,080 INFO L432 AbstractCegarLoop]: Abstraction has 157 states and 180 transitions. [2018-01-25 05:47:42,080 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 05:47:42,080 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 180 transitions. [2018-01-25 05:47:42,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-01-25 05:47:42,081 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 05:47:42,081 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 05:47:42,081 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 05:47:42,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1159097560, now seen corresponding path program 1 times [2018-01-25 05:47:42,082 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 05:47:42,083 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:47:42,083 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 05:47:42,083 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:47:42,084 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 05:47:42,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 05:47:42,103 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 05:47:42,137 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 05:47:42,138 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 05:47:42,138 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 05:47:42,138 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 05:47:42,138 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 05:47:42,138 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 05:47:42,138 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 05:47:42,139 INFO L87 Difference]: Start difference. First operand 157 states and 180 transitions. Second operand 4 states. [2018-01-25 05:47:42,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 05:47:42,246 INFO L93 Difference]: Finished difference Result 173 states and 196 transitions. [2018-01-25 05:47:42,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 05:47:42,247 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2018-01-25 05:47:42,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 05:47:42,248 INFO L225 Difference]: With dead ends: 173 [2018-01-25 05:47:42,248 INFO L226 Difference]: Without dead ends: 170 [2018-01-25 05:47:42,248 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 05:47:42,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2018-01-25 05:47:42,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 158. [2018-01-25 05:47:42,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2018-01-25 05:47:42,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 183 transitions. [2018-01-25 05:47:42,258 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 183 transitions. Word has length 16 [2018-01-25 05:47:42,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 05:47:42,259 INFO L432 AbstractCegarLoop]: Abstraction has 158 states and 183 transitions. [2018-01-25 05:47:42,259 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 05:47:42,259 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 183 transitions. [2018-01-25 05:47:42,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-01-25 05:47:42,259 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 05:47:42,260 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 05:47:42,260 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 05:47:42,260 INFO L82 PathProgramCache]: Analyzing trace with hash 1159097561, now seen corresponding path program 1 times [2018-01-25 05:47:42,260 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 05:47:42,261 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:47:42,261 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 05:47:42,261 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:47:42,261 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 05:47:42,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 05:47:42,275 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 05:47:42,340 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 05:47:42,340 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 05:47:42,341 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 05:47:42,341 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 05:47:42,341 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 05:47:42,341 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 05:47:42,341 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 05:47:42,342 INFO L87 Difference]: Start difference. First operand 158 states and 183 transitions. Second operand 4 states. [2018-01-25 05:47:42,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 05:47:42,446 INFO L93 Difference]: Finished difference Result 163 states and 186 transitions. [2018-01-25 05:47:42,446 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-25 05:47:42,446 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2018-01-25 05:47:42,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 05:47:42,447 INFO L225 Difference]: With dead ends: 163 [2018-01-25 05:47:42,447 INFO L226 Difference]: Without dead ends: 160 [2018-01-25 05:47:42,448 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 05:47:42,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2018-01-25 05:47:42,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 156. [2018-01-25 05:47:42,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2018-01-25 05:47:42,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 180 transitions. [2018-01-25 05:47:42,456 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 180 transitions. Word has length 16 [2018-01-25 05:47:42,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 05:47:42,456 INFO L432 AbstractCegarLoop]: Abstraction has 156 states and 180 transitions. [2018-01-25 05:47:42,457 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 05:47:42,457 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 180 transitions. [2018-01-25 05:47:42,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-01-25 05:47:42,458 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 05:47:42,458 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 05:47:42,458 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 05:47:42,458 INFO L82 PathProgramCache]: Analyzing trace with hash 990226269, now seen corresponding path program 1 times [2018-01-25 05:47:42,458 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 05:47:42,459 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:47:42,459 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 05:47:42,459 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:47:42,459 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 05:47:42,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 05:47:42,473 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 05:47:42,512 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 05:47:42,512 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 05:47:42,513 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 05:47:42,513 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 05:47:42,513 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 05:47:42,513 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 05:47:42,514 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 05:47:42,514 INFO L87 Difference]: Start difference. First operand 156 states and 180 transitions. Second operand 4 states. [2018-01-25 05:47:42,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 05:47:42,539 INFO L93 Difference]: Finished difference Result 160 states and 183 transitions. [2018-01-25 05:47:42,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-25 05:47:42,540 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2018-01-25 05:47:42,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 05:47:42,541 INFO L225 Difference]: With dead ends: 160 [2018-01-25 05:47:42,541 INFO L226 Difference]: Without dead ends: 157 [2018-01-25 05:47:42,542 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 05:47:42,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-01-25 05:47:42,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 156. [2018-01-25 05:47:42,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2018-01-25 05:47:42,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 179 transitions. [2018-01-25 05:47:42,550 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 179 transitions. Word has length 21 [2018-01-25 05:47:42,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 05:47:42,550 INFO L432 AbstractCegarLoop]: Abstraction has 156 states and 179 transitions. [2018-01-25 05:47:42,551 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 05:47:42,551 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 179 transitions. [2018-01-25 05:47:42,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-25 05:47:42,551 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 05:47:42,552 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 05:47:42,552 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 05:47:42,552 INFO L82 PathProgramCache]: Analyzing trace with hash 632244512, now seen corresponding path program 1 times [2018-01-25 05:47:42,552 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 05:47:42,553 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:47:42,553 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 05:47:42,553 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:47:42,553 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 05:47:42,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 05:47:42,566 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 05:47:42,609 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 05:47:42,610 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 05:47:42,610 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 05:47:42,610 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 05:47:42,610 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 05:47:42,611 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 05:47:42,611 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-25 05:47:42,611 INFO L87 Difference]: Start difference. First operand 156 states and 179 transitions. Second operand 5 states. [2018-01-25 05:47:42,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 05:47:42,761 INFO L93 Difference]: Finished difference Result 175 states and 200 transitions. [2018-01-25 05:47:42,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 05:47:42,761 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2018-01-25 05:47:42,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 05:47:42,762 INFO L225 Difference]: With dead ends: 175 [2018-01-25 05:47:42,762 INFO L226 Difference]: Without dead ends: 171 [2018-01-25 05:47:42,763 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 05:47:42,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-01-25 05:47:42,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 155. [2018-01-25 05:47:42,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-01-25 05:47:42,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 179 transitions. [2018-01-25 05:47:42,768 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 179 transitions. Word has length 22 [2018-01-25 05:47:42,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 05:47:42,768 INFO L432 AbstractCegarLoop]: Abstraction has 155 states and 179 transitions. [2018-01-25 05:47:42,768 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 05:47:42,768 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 179 transitions. [2018-01-25 05:47:42,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-25 05:47:42,769 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 05:47:42,769 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 05:47:42,769 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 05:47:42,769 INFO L82 PathProgramCache]: Analyzing trace with hash 632244513, now seen corresponding path program 1 times [2018-01-25 05:47:42,769 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 05:47:42,770 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:47:42,770 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 05:47:42,770 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:47:42,770 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 05:47:42,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 05:47:42,783 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 05:47:42,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 05:47:42,860 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 05:47:42,860 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 05:47:42,860 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 05:47:42,861 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 05:47:42,861 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 05:47:42,861 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 05:47:42,861 INFO L87 Difference]: Start difference. First operand 155 states and 179 transitions. Second operand 5 states. [2018-01-25 05:47:43,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 05:47:43,035 INFO L93 Difference]: Finished difference Result 177 states and 202 transitions. [2018-01-25 05:47:43,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 05:47:43,035 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2018-01-25 05:47:43,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 05:47:43,036 INFO L225 Difference]: With dead ends: 177 [2018-01-25 05:47:43,036 INFO L226 Difference]: Without dead ends: 175 [2018-01-25 05:47:43,037 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 05:47:43,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-01-25 05:47:43,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 157. [2018-01-25 05:47:43,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-01-25 05:47:43,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 180 transitions. [2018-01-25 05:47:43,048 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 180 transitions. Word has length 22 [2018-01-25 05:47:43,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 05:47:43,048 INFO L432 AbstractCegarLoop]: Abstraction has 157 states and 180 transitions. [2018-01-25 05:47:43,048 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 05:47:43,049 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 180 transitions. [2018-01-25 05:47:43,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-25 05:47:43,049 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 05:47:43,049 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 05:47:43,049 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 05:47:43,050 INFO L82 PathProgramCache]: Analyzing trace with hash -733762389, now seen corresponding path program 1 times [2018-01-25 05:47:43,050 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 05:47:43,050 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:47:43,050 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 05:47:43,051 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:47:43,051 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 05:47:43,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 05:47:43,060 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 05:47:43,084 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 05:47:43,084 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 05:47:43,084 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 05:47:43,085 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 05:47:43,085 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-25 05:47:43,085 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-25 05:47:43,085 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-25 05:47:43,085 INFO L87 Difference]: Start difference. First operand 157 states and 180 transitions. Second operand 3 states. [2018-01-25 05:47:43,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 05:47:43,102 INFO L93 Difference]: Finished difference Result 307 states and 355 transitions. [2018-01-25 05:47:43,102 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-25 05:47:43,102 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2018-01-25 05:47:43,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 05:47:43,103 INFO L225 Difference]: With dead ends: 307 [2018-01-25 05:47:43,103 INFO L226 Difference]: Without dead ends: 159 [2018-01-25 05:47:43,104 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 05:47:43,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-01-25 05:47:43,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2018-01-25 05:47:43,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-01-25 05:47:43,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 182 transitions. [2018-01-25 05:47:43,110 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 182 transitions. Word has length 22 [2018-01-25 05:47:43,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 05:47:43,111 INFO L432 AbstractCegarLoop]: Abstraction has 159 states and 182 transitions. [2018-01-25 05:47:43,111 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-25 05:47:43,111 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 182 transitions. [2018-01-25 05:47:43,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-01-25 05:47:43,111 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 05:47:43,112 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 05:47:43,112 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 05:47:43,112 INFO L82 PathProgramCache]: Analyzing trace with hash -1797349272, now seen corresponding path program 1 times [2018-01-25 05:47:43,112 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 05:47:43,113 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:47:43,113 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 05:47:43,113 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:47:43,113 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 05:47:43,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 05:47:43,127 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 05:47:43,285 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 05:47:43,285 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 05:47:43,285 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-25 05:47:43,286 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 05:47:43,286 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-25 05:47:43,286 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-25 05:47:43,286 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-25 05:47:43,287 INFO L87 Difference]: Start difference. First operand 159 states and 182 transitions. Second operand 6 states. [2018-01-25 05:47:43,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 05:47:43,484 INFO L93 Difference]: Finished difference Result 352 states and 406 transitions. [2018-01-25 05:47:43,484 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-25 05:47:43,484 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2018-01-25 05:47:43,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 05:47:43,486 INFO L225 Difference]: With dead ends: 352 [2018-01-25 05:47:43,486 INFO L226 Difference]: Without dead ends: 202 [2018-01-25 05:47:43,487 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 05:47:43,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2018-01-25 05:47:43,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 175. [2018-01-25 05:47:43,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-01-25 05:47:43,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 203 transitions. [2018-01-25 05:47:43,496 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 203 transitions. Word has length 24 [2018-01-25 05:47:43,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 05:47:43,496 INFO L432 AbstractCegarLoop]: Abstraction has 175 states and 203 transitions. [2018-01-25 05:47:43,496 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-25 05:47:43,497 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 203 transitions. [2018-01-25 05:47:43,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-25 05:47:43,497 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 05:47:43,498 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 05:47:43,498 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 05:47:43,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1764795143, now seen corresponding path program 1 times [2018-01-25 05:47:43,498 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 05:47:43,499 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:47:43,499 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 05:47:43,499 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:47:43,499 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 05:47:43,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 05:47:43,515 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 05:47:43,829 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 05:47:43,830 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 05:47:43,830 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-01-25 05:47:43,830 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 05:47:43,830 INFO L409 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-01-25 05:47:43,830 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-01-25 05:47:43,831 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2018-01-25 05:47:43,831 INFO L87 Difference]: Start difference. First operand 175 states and 203 transitions. Second operand 12 states. [2018-01-25 05:47:44,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 05:47:44,440 INFO L93 Difference]: Finished difference Result 192 states and 223 transitions. [2018-01-25 05:47:44,440 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-25 05:47:44,440 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 25 [2018-01-25 05:47:44,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 05:47:44,442 INFO L225 Difference]: With dead ends: 192 [2018-01-25 05:47:44,442 INFO L226 Difference]: Without dead ends: 191 [2018-01-25 05:47:44,443 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=144, Invalid=408, Unknown=0, NotChecked=0, Total=552 [2018-01-25 05:47:44,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-01-25 05:47:44,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 176. [2018-01-25 05:47:44,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2018-01-25 05:47:44,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 205 transitions. [2018-01-25 05:47:44,451 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 205 transitions. Word has length 25 [2018-01-25 05:47:44,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 05:47:44,452 INFO L432 AbstractCegarLoop]: Abstraction has 176 states and 205 transitions. [2018-01-25 05:47:44,452 INFO L433 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-01-25 05:47:44,452 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 205 transitions. [2018-01-25 05:47:44,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-25 05:47:44,453 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 05:47:44,453 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 05:47:44,453 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 05:47:44,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1764795144, now seen corresponding path program 1 times [2018-01-25 05:47:44,453 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 05:47:44,454 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:47:44,454 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 05:47:44,454 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:47:44,455 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 05:47:44,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 05:47:44,470 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 05:47:44,827 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 05:47:44,827 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 05:47:44,827 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-01-25 05:47:44,827 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 05:47:44,828 INFO L409 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-01-25 05:47:44,828 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-01-25 05:47:44,828 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2018-01-25 05:47:44,828 INFO L87 Difference]: Start difference. First operand 176 states and 205 transitions. Second operand 11 states. [2018-01-25 05:47:45,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 05:47:45,343 INFO L93 Difference]: Finished difference Result 245 states and 274 transitions. [2018-01-25 05:47:45,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-25 05:47:45,344 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2018-01-25 05:47:45,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 05:47:45,345 INFO L225 Difference]: With dead ends: 245 [2018-01-25 05:47:45,345 INFO L226 Difference]: Without dead ends: 240 [2018-01-25 05:47:45,346 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 05:47:45,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2018-01-25 05:47:45,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 192. [2018-01-25 05:47:45,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2018-01-25 05:47:45,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 228 transitions. [2018-01-25 05:47:45,353 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 228 transitions. Word has length 25 [2018-01-25 05:47:45,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 05:47:45,353 INFO L432 AbstractCegarLoop]: Abstraction has 192 states and 228 transitions. [2018-01-25 05:47:45,353 INFO L433 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-01-25 05:47:45,353 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 228 transitions. [2018-01-25 05:47:45,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-25 05:47:45,354 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 05:47:45,354 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 05:47:45,354 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 05:47:45,355 INFO L82 PathProgramCache]: Analyzing trace with hash 2572345, now seen corresponding path program 1 times [2018-01-25 05:47:45,355 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 05:47:45,356 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:47:45,356 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 05:47:45,356 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:47:45,356 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 05:47:45,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 05:47:45,364 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 05:47:45,423 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 05:47:45,423 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 05:47:45,423 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 05:47:45,424 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 05:47:45,424 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 05:47:45,424 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 05:47:45,424 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 05:47:45,424 INFO L87 Difference]: Start difference. First operand 192 states and 228 transitions. Second operand 5 states. [2018-01-25 05:47:45,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 05:47:45,709 INFO L93 Difference]: Finished difference Result 277 states and 330 transitions. [2018-01-25 05:47:45,709 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 05:47:45,709 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2018-01-25 05:47:45,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 05:47:45,711 INFO L225 Difference]: With dead ends: 277 [2018-01-25 05:47:45,711 INFO L226 Difference]: Without dead ends: 276 [2018-01-25 05:47:45,712 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 05:47:45,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2018-01-25 05:47:45,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 191. [2018-01-25 05:47:45,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-01-25 05:47:45,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 226 transitions. [2018-01-25 05:47:45,723 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 226 transitions. Word has length 25 [2018-01-25 05:47:45,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 05:47:45,723 INFO L432 AbstractCegarLoop]: Abstraction has 191 states and 226 transitions. [2018-01-25 05:47:45,724 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 05:47:45,724 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 226 transitions. [2018-01-25 05:47:45,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-25 05:47:45,724 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 05:47:45,725 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 05:47:45,725 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 05:47:45,725 INFO L82 PathProgramCache]: Analyzing trace with hash 2572346, now seen corresponding path program 1 times [2018-01-25 05:47:45,725 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 05:47:45,726 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:47:45,726 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 05:47:45,726 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:47:45,726 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 05:47:45,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 05:47:45,738 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 05:47:45,796 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 05:47:45,796 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 05:47:45,797 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 05:47:45,797 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 05:47:45,797 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 05:47:45,797 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 05:47:45,798 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 05:47:45,798 INFO L87 Difference]: Start difference. First operand 191 states and 226 transitions. Second operand 5 states. [2018-01-25 05:47:46,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 05:47:46,323 INFO L93 Difference]: Finished difference Result 337 states and 399 transitions. [2018-01-25 05:47:46,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 05:47:46,323 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2018-01-25 05:47:46,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 05:47:46,325 INFO L225 Difference]: With dead ends: 337 [2018-01-25 05:47:46,325 INFO L226 Difference]: Without dead ends: 336 [2018-01-25 05:47:46,325 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-25 05:47:46,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2018-01-25 05:47:46,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 190. [2018-01-25 05:47:46,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2018-01-25 05:47:46,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 224 transitions. [2018-01-25 05:47:46,336 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 224 transitions. Word has length 25 [2018-01-25 05:47:46,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 05:47:46,336 INFO L432 AbstractCegarLoop]: Abstraction has 190 states and 224 transitions. [2018-01-25 05:47:46,336 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 05:47:46,336 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 224 transitions. [2018-01-25 05:47:46,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-01-25 05:47:46,337 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 05:47:46,337 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 05:47:46,337 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 05:47:46,337 INFO L82 PathProgramCache]: Analyzing trace with hash -676623804, now seen corresponding path program 1 times [2018-01-25 05:47:46,338 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 05:47:46,338 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:47:46,339 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 05:47:46,339 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:47:46,339 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 05:47:46,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 05:47:46,350 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 05:47:46,447 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 05:47:46,447 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 05:47:46,448 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-25 05:47:46,448 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 05:47:46,448 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-25 05:47:46,448 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-25 05:47:46,448 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-01-25 05:47:46,449 INFO L87 Difference]: Start difference. First operand 190 states and 224 transitions. Second operand 9 states. [2018-01-25 05:47:46,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 05:47:46,916 INFO L93 Difference]: Finished difference Result 228 states and 270 transitions. [2018-01-25 05:47:46,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-25 05:47:46,916 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2018-01-25 05:47:46,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 05:47:46,917 INFO L225 Difference]: With dead ends: 228 [2018-01-25 05:47:46,917 INFO L226 Difference]: Without dead ends: 227 [2018-01-25 05:47:46,918 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 05:47:46,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-01-25 05:47:46,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 189. [2018-01-25 05:47:46,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-01-25 05:47:46,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 222 transitions. [2018-01-25 05:47:46,928 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 222 transitions. Word has length 28 [2018-01-25 05:47:46,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 05:47:46,928 INFO L432 AbstractCegarLoop]: Abstraction has 189 states and 222 transitions. [2018-01-25 05:47:46,929 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-25 05:47:46,929 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 222 transitions. [2018-01-25 05:47:46,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-01-25 05:47:46,930 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 05:47:46,930 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 05:47:46,930 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 05:47:46,930 INFO L82 PathProgramCache]: Analyzing trace with hash -676623803, now seen corresponding path program 1 times [2018-01-25 05:47:46,930 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 05:47:46,931 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:47:46,931 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 05:47:46,931 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:47:46,931 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 05:47:46,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 05:47:46,943 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 05:47:47,065 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 05:47:47,066 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 05:47:47,066 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-25 05:47:47,066 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 05:47:47,066 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-25 05:47:47,066 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-25 05:47:47,066 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-01-25 05:47:47,067 INFO L87 Difference]: Start difference. First operand 189 states and 222 transitions. Second operand 9 states. [2018-01-25 05:47:47,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 05:47:47,404 INFO L93 Difference]: Finished difference Result 227 states and 268 transitions. [2018-01-25 05:47:47,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-25 05:47:47,405 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2018-01-25 05:47:47,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 05:47:47,406 INFO L225 Difference]: With dead ends: 227 [2018-01-25 05:47:47,406 INFO L226 Difference]: Without dead ends: 226 [2018-01-25 05:47:47,407 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 05:47:47,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2018-01-25 05:47:47,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 188. [2018-01-25 05:47:47,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2018-01-25 05:47:47,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 220 transitions. [2018-01-25 05:47:47,417 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 220 transitions. Word has length 28 [2018-01-25 05:47:47,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 05:47:47,418 INFO L432 AbstractCegarLoop]: Abstraction has 188 states and 220 transitions. [2018-01-25 05:47:47,418 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-25 05:47:47,418 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 220 transitions. [2018-01-25 05:47:47,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-25 05:47:47,418 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 05:47:47,419 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 05:47:47,419 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 05:47:47,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1254885066, now seen corresponding path program 1 times [2018-01-25 05:47:47,419 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 05:47:47,420 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:47:47,420 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 05:47:47,420 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:47:47,420 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 05:47:47,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 05:47:47,431 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 05:47:47,485 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 05:47:47,485 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 05:47:47,485 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 05:47:47,485 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 05:47:47,486 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 05:47:47,486 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 05:47:47,486 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 05:47:47,486 INFO L87 Difference]: Start difference. First operand 188 states and 220 transitions. Second operand 4 states. [2018-01-25 05:47:47,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 05:47:47,684 INFO L93 Difference]: Finished difference Result 245 states and 284 transitions. [2018-01-25 05:47:47,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-25 05:47:47,684 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2018-01-25 05:47:47,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 05:47:47,685 INFO L225 Difference]: With dead ends: 245 [2018-01-25 05:47:47,685 INFO L226 Difference]: Without dead ends: 243 [2018-01-25 05:47:47,686 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 05:47:47,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-01-25 05:47:47,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 186. [2018-01-25 05:47:47,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2018-01-25 05:47:47,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 216 transitions. [2018-01-25 05:47:47,694 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 216 transitions. Word has length 29 [2018-01-25 05:47:47,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 05:47:47,695 INFO L432 AbstractCegarLoop]: Abstraction has 186 states and 216 transitions. [2018-01-25 05:47:47,695 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 05:47:47,695 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 216 transitions. [2018-01-25 05:47:47,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-25 05:47:47,695 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 05:47:47,696 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 05:47:47,696 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 05:47:47,696 INFO L82 PathProgramCache]: Analyzing trace with hash 1254885065, now seen corresponding path program 1 times [2018-01-25 05:47:47,696 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 05:47:47,697 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:47:47,697 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 05:47:47,697 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:47:47,697 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 05:47:47,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 05:47:47,707 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 05:47:47,752 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 05:47:47,753 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 05:47:47,753 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 05:47:47,753 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 05:47:47,753 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 05:47:47,754 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 05:47:47,754 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 05:47:47,754 INFO L87 Difference]: Start difference. First operand 186 states and 216 transitions. Second operand 4 states. [2018-01-25 05:47:47,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 05:47:47,895 INFO L93 Difference]: Finished difference Result 213 states and 248 transitions. [2018-01-25 05:47:47,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 05:47:47,896 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2018-01-25 05:47:47,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 05:47:47,897 INFO L225 Difference]: With dead ends: 213 [2018-01-25 05:47:47,897 INFO L226 Difference]: Without dead ends: 212 [2018-01-25 05:47:47,898 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 05:47:47,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2018-01-25 05:47:47,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 185. [2018-01-25 05:47:47,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-01-25 05:47:47,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 214 transitions. [2018-01-25 05:47:47,908 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 214 transitions. Word has length 29 [2018-01-25 05:47:47,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 05:47:47,908 INFO L432 AbstractCegarLoop]: Abstraction has 185 states and 214 transitions. [2018-01-25 05:47:47,908 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 05:47:47,909 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 214 transitions. [2018-01-25 05:47:47,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-25 05:47:47,909 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 05:47:47,909 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 05:47:47,909 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 05:47:47,910 INFO L82 PathProgramCache]: Analyzing trace with hash 570395414, now seen corresponding path program 1 times [2018-01-25 05:47:47,910 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 05:47:47,911 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:47:47,911 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 05:47:47,911 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:47:47,911 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 05:47:47,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 05:47:47,920 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 05:47:47,948 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 05:47:47,949 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 05:47:47,949 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 05:47:47,949 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 05:47:47,949 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 05:47:47,949 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 05:47:47,950 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 05:47:47,950 INFO L87 Difference]: Start difference. First operand 185 states and 214 transitions. Second operand 5 states. [2018-01-25 05:47:48,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 05:47:48,191 INFO L93 Difference]: Finished difference Result 268 states and 312 transitions. [2018-01-25 05:47:48,191 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 05:47:48,191 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2018-01-25 05:47:48,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 05:47:48,192 INFO L225 Difference]: With dead ends: 268 [2018-01-25 05:47:48,192 INFO L226 Difference]: Without dead ends: 267 [2018-01-25 05:47:48,193 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 05:47:48,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2018-01-25 05:47:48,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 184. [2018-01-25 05:47:48,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2018-01-25 05:47:48,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 212 transitions. [2018-01-25 05:47:48,199 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 212 transitions. Word has length 29 [2018-01-25 05:47:48,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 05:47:48,199 INFO L432 AbstractCegarLoop]: Abstraction has 184 states and 212 transitions. [2018-01-25 05:47:48,200 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 05:47:48,200 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 212 transitions. [2018-01-25 05:47:48,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-25 05:47:48,200 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 05:47:48,200 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 05:47:48,200 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 05:47:48,200 INFO L82 PathProgramCache]: Analyzing trace with hash 570395415, now seen corresponding path program 1 times [2018-01-25 05:47:48,200 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 05:47:48,201 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:47:48,201 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 05:47:48,201 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:47:48,201 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 05:47:48,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 05:47:48,208 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 05:47:48,318 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 05:47:48,319 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 05:47:48,319 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 05:47:48,319 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 05:47:48,319 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 05:47:48,319 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 05:47:48,319 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 05:47:48,320 INFO L87 Difference]: Start difference. First operand 184 states and 212 transitions. Second operand 5 states. [2018-01-25 05:47:48,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 05:47:48,593 INFO L93 Difference]: Finished difference Result 325 states and 375 transitions. [2018-01-25 05:47:48,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 05:47:48,593 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2018-01-25 05:47:48,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 05:47:48,594 INFO L225 Difference]: With dead ends: 325 [2018-01-25 05:47:48,594 INFO L226 Difference]: Without dead ends: 324 [2018-01-25 05:47:48,594 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-25 05:47:48,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2018-01-25 05:47:48,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 183. [2018-01-25 05:47:48,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-01-25 05:47:48,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 210 transitions. [2018-01-25 05:47:48,604 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 210 transitions. Word has length 29 [2018-01-25 05:47:48,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 05:47:48,604 INFO L432 AbstractCegarLoop]: Abstraction has 183 states and 210 transitions. [2018-01-25 05:47:48,604 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 05:47:48,604 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 210 transitions. [2018-01-25 05:47:48,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-01-25 05:47:48,605 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 05:47:48,605 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 05:47:48,605 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 05:47:48,605 INFO L82 PathProgramCache]: Analyzing trace with hash -526012245, now seen corresponding path program 1 times [2018-01-25 05:47:48,605 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 05:47:48,606 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:47:48,606 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 05:47:48,606 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:47:48,606 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 05:47:48,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 05:47:48,616 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 05:47:48,651 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 05:47:48,651 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 05:47:48,652 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 05:47:48,652 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 05:47:48,652 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 05:47:48,652 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 05:47:48,652 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 05:47:48,652 INFO L87 Difference]: Start difference. First operand 183 states and 210 transitions. Second operand 4 states. [2018-01-25 05:47:48,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 05:47:48,734 INFO L93 Difference]: Finished difference Result 198 states and 227 transitions. [2018-01-25 05:47:48,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 05:47:48,735 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2018-01-25 05:47:48,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 05:47:48,736 INFO L225 Difference]: With dead ends: 198 [2018-01-25 05:47:48,736 INFO L226 Difference]: Without dead ends: 197 [2018-01-25 05:47:48,737 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 05:47:48,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2018-01-25 05:47:48,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 182. [2018-01-25 05:47:48,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2018-01-25 05:47:48,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 208 transitions. [2018-01-25 05:47:48,745 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 208 transitions. Word has length 31 [2018-01-25 05:47:48,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 05:47:48,745 INFO L432 AbstractCegarLoop]: Abstraction has 182 states and 208 transitions. [2018-01-25 05:47:48,745 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 05:47:48,746 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 208 transitions. [2018-01-25 05:47:48,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-01-25 05:47:48,746 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 05:47:48,746 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 05:47:48,746 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 05:47:48,747 INFO L82 PathProgramCache]: Analyzing trace with hash -526012244, now seen corresponding path program 1 times [2018-01-25 05:47:48,747 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 05:47:48,747 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:47:48,748 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 05:47:48,748 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:47:48,748 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 05:47:48,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 05:47:48,758 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 05:47:48,801 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 05:47:48,801 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 05:47:48,802 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 05:47:48,802 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 05:47:48,802 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 05:47:48,802 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 05:47:48,802 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 05:47:48,802 INFO L87 Difference]: Start difference. First operand 182 states and 208 transitions. Second operand 4 states. [2018-01-25 05:47:48,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 05:47:48,939 INFO L93 Difference]: Finished difference Result 222 states and 250 transitions. [2018-01-25 05:47:48,939 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-25 05:47:48,939 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2018-01-25 05:47:48,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 05:47:48,940 INFO L225 Difference]: With dead ends: 222 [2018-01-25 05:47:48,940 INFO L226 Difference]: Without dead ends: 220 [2018-01-25 05:47:48,940 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 05:47:48,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2018-01-25 05:47:48,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 180. [2018-01-25 05:47:48,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2018-01-25 05:47:48,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 204 transitions. [2018-01-25 05:47:48,946 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 204 transitions. Word has length 31 [2018-01-25 05:47:48,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 05:47:48,946 INFO L432 AbstractCegarLoop]: Abstraction has 180 states and 204 transitions. [2018-01-25 05:47:48,946 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 05:47:48,946 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 204 transitions. [2018-01-25 05:47:48,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-01-25 05:47:48,946 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 05:47:48,947 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 05:47:48,947 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 05:47:48,947 INFO L82 PathProgramCache]: Analyzing trace with hash 886820396, now seen corresponding path program 1 times [2018-01-25 05:47:48,947 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 05:47:48,948 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:47:48,948 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 05:47:48,948 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:47:48,948 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 05:47:48,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 05:47:48,954 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 05:47:49,009 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 05:47:49,010 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-25 05:47:49,010 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-25 05:47:49,010 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 33 with the following transitions: [2018-01-25 05:47:49,012 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 05:47:49,060 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-25 05:47:49,061 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