java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-optional_true-unreach-call_true-valid-memsafety.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 20:54:59,513 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 20:54:59,514 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 20:54:59,528 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 20:54:59,529 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 20:54:59,529 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 20:54:59,531 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 20:54:59,532 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 20:54:59,534 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 20:54:59,534 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 20:54:59,535 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 20:54:59,536 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 20:54:59,537 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 20:54:59,538 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 20:54:59,539 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 20:54:59,541 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 20:54:59,543 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 20:54:59,545 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 20:54:59,546 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 20:54:59,547 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 20:54:59,550 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-24 20:54:59,550 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-24 20:54:59,550 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-24 20:54:59,551 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-24 20:54:59,552 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-24 20:54:59,553 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-24 20:54:59,553 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-24 20:54:59,554 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-24 20:54:59,554 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-24 20:54:59,554 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 20:54:59,555 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 20:54:59,555 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf [2018-01-24 20:54:59,565 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 20:54:59,565 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 20:54:59,566 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 20:54:59,566 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 20:54:59,567 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 20:54:59,567 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-24 20:54:59,567 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 20:54:59,567 INFO L133 SettingsManager]: * Precise comparison operator=true [2018-01-24 20:54:59,567 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 20:54:59,568 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 20:54:59,568 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 20:54:59,569 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 20:54:59,569 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 20:54:59,569 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 20:54:59,569 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 20:54:59,569 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 20:54:59,570 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 20:54:59,570 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 20:54:59,570 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 20:54:59,570 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 20:54:59,570 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 20:54:59,571 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 20:54:59,571 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 20:54:59,571 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 20:54:59,571 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 20:54:59,572 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 20:54:59,572 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 20:54:59,572 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 20:54:59,572 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 20:54:59,572 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 20:54:59,573 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-24 20:54:59,573 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 20:54:59,573 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 20:54:59,573 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 20:54:59,573 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-24 20:54:59,574 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 20:54:59,574 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 20:54:59,610 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 20:54:59,622 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 20:54:59,626 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 20:54:59,628 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 20:54:59,628 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 20:54:59,629 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-optional_true-unreach-call_true-valid-memsafety.i [2018-01-24 20:54:59,810 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 20:54:59,816 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 20:54:59,817 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 20:54:59,817 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 20:54:59,823 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 20:54:59,824 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 08:54:59" (1/1) ... [2018-01-24 20:54:59,826 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28ea857c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:54:59, skipping insertion in model container [2018-01-24 20:54:59,826 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 08:54:59" (1/1) ... [2018-01-24 20:54:59,846 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 20:54:59,890 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 20:55:00,013 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 20:55:00,040 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 20:55:00,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:55:00 WrapperNode [2018-01-24 20:55:00,048 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 20:55:00,049 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 20:55:00,049 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 20:55:00,049 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 20:55:00,060 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:55:00" (1/1) ... [2018-01-24 20:55:00,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:55:00" (1/1) ... [2018-01-24 20:55:00,071 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:55:00" (1/1) ... [2018-01-24 20:55:00,071 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:55:00" (1/1) ... [2018-01-24 20:55:00,078 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:55:00" (1/1) ... [2018-01-24 20:55:00,083 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:55:00" (1/1) ... [2018-01-24 20:55:00,084 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:55:00" (1/1) ... [2018-01-24 20:55:00,086 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 20:55:00,087 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 20:55:00,087 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 20:55:00,087 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 20:55:00,088 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:55:00" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 20:55:00,137 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 20:55:00,137 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 20:55:00,138 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 20:55:00,138 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-24 20:55:00,138 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-24 20:55:00,138 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-24 20:55:00,138 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-24 20:55:00,139 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 20:55:00,139 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 20:55:00,139 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 20:55:00,139 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-24 20:55:00,139 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-24 20:55:00,139 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 20:55:00,140 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-24 20:55:00,140 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 20:55:00,140 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 20:55:00,140 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 20:55:00,664 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 20:55:00,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 08:55:00 BoogieIcfgContainer [2018-01-24 20:55:00,665 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 20:55:00,666 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-24 20:55:00,666 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-24 20:55:00,668 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-24 20:55:00,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.01 08:54:59" (1/3) ... [2018-01-24 20:55:00,670 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fa17f4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 08:55:00, skipping insertion in model container [2018-01-24 20:55:00,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:55:00" (2/3) ... [2018-01-24 20:55:00,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fa17f4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 08:55:00, skipping insertion in model container [2018-01-24 20:55:00,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 08:55:00" (3/3) ... [2018-01-24 20:55:00,673 INFO L105 eAbstractionObserver]: Analyzing ICFG dll-optional_true-unreach-call_true-valid-memsafety.i [2018-01-24 20:55:00,682 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-24 20:55:00,691 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 69 error locations. [2018-01-24 20:55:00,742 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-24 20:55:00,743 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-24 20:55:00,743 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-24 20:55:00,743 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-24 20:55:00,743 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-24 20:55:00,743 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-24 20:55:00,743 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-24 20:55:00,744 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-24 20:55:00,744 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-24 20:55:00,769 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states. [2018-01-24 20:55:00,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-24 20:55:00,776 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:55:00,777 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:55:00,777 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:55:00,782 INFO L82 PathProgramCache]: Analyzing trace with hash 1266701268, now seen corresponding path program 1 times [2018-01-24 20:55:00,785 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:55:00,844 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:55:00,844 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:55:00,845 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:55:00,845 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:55:00,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:55:00,896 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:55:00,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:55:00,977 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:55:00,978 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 20:55:00,978 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:55:00,982 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 20:55:01,070 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 20:55:01,071 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 20:55:01,073 INFO L87 Difference]: Start difference. First operand 154 states. Second operand 4 states. [2018-01-24 20:55:01,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:55:01,347 INFO L93 Difference]: Finished difference Result 237 states and 270 transitions. [2018-01-24 20:55:01,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 20:55:01,349 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-24 20:55:01,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:55:01,360 INFO L225 Difference]: With dead ends: 237 [2018-01-24 20:55:01,360 INFO L226 Difference]: Without dead ends: 163 [2018-01-24 20:55:01,365 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:55:01,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-01-24 20:55:01,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 142. [2018-01-24 20:55:01,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2018-01-24 20:55:01,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 153 transitions. [2018-01-24 20:55:01,410 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 153 transitions. Word has length 8 [2018-01-24 20:55:01,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:55:01,411 INFO L432 AbstractCegarLoop]: Abstraction has 142 states and 153 transitions. [2018-01-24 20:55:01,411 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 20:55:01,411 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 153 transitions. [2018-01-24 20:55:01,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-24 20:55:01,412 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:55:01,412 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:55:01,412 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:55:01,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1266701269, now seen corresponding path program 1 times [2018-01-24 20:55:01,413 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:55:01,414 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:55:01,414 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:55:01,414 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:55:01,414 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:55:01,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:55:01,431 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:55:01,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:55:01,511 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:55:01,511 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 20:55:01,511 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:55:01,512 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 20:55:01,512 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 20:55:01,513 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 20:55:01,513 INFO L87 Difference]: Start difference. First operand 142 states and 153 transitions. Second operand 4 states. [2018-01-24 20:55:01,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:55:01,722 INFO L93 Difference]: Finished difference Result 147 states and 158 transitions. [2018-01-24 20:55:01,723 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 20:55:01,723 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-24 20:55:01,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:55:01,725 INFO L225 Difference]: With dead ends: 147 [2018-01-24 20:55:01,725 INFO L226 Difference]: Without dead ends: 138 [2018-01-24 20:55:01,726 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:55:01,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-01-24 20:55:01,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 133. [2018-01-24 20:55:01,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-01-24 20:55:01,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 144 transitions. [2018-01-24 20:55:01,739 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 144 transitions. Word has length 8 [2018-01-24 20:55:01,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:55:01,740 INFO L432 AbstractCegarLoop]: Abstraction has 133 states and 144 transitions. [2018-01-24 20:55:01,740 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 20:55:01,740 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 144 transitions. [2018-01-24 20:55:01,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-01-24 20:55:01,741 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:55:01,741 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:55:01,741 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:55:01,741 INFO L82 PathProgramCache]: Analyzing trace with hash -235797476, now seen corresponding path program 1 times [2018-01-24 20:55:01,741 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:55:01,742 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:55:01,743 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:55:01,743 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:55:01,743 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:55:01,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:55:01,768 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:55:01,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:55:01,826 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:55:01,826 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 20:55:01,827 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:55:01,827 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 20:55:01,827 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 20:55:01,827 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:55:01,828 INFO L87 Difference]: Start difference. First operand 133 states and 144 transitions. Second operand 5 states. [2018-01-24 20:55:02,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:55:02,238 INFO L93 Difference]: Finished difference Result 286 states and 310 transitions. [2018-01-24 20:55:02,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-24 20:55:02,239 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2018-01-24 20:55:02,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:55:02,241 INFO L225 Difference]: With dead ends: 286 [2018-01-24 20:55:02,242 INFO L226 Difference]: Without dead ends: 285 [2018-01-24 20:55:02,242 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 [2018-01-24 20:55:02,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2018-01-24 20:55:02,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 132. [2018-01-24 20:55:02,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2018-01-24 20:55:02,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 143 transitions. [2018-01-24 20:55:02,255 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 143 transitions. Word has length 16 [2018-01-24 20:55:02,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:55:02,256 INFO L432 AbstractCegarLoop]: Abstraction has 132 states and 143 transitions. [2018-01-24 20:55:02,256 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 20:55:02,256 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 143 transitions. [2018-01-24 20:55:02,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-01-24 20:55:02,257 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:55:02,257 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:55:02,258 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:55:02,259 INFO L82 PathProgramCache]: Analyzing trace with hash -235797475, now seen corresponding path program 1 times [2018-01-24 20:55:02,259 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:55:02,260 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:55:02,260 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:55:02,261 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:55:02,261 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:55:02,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:55:02,285 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:55:02,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:55:02,382 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:55:02,382 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 20:55:02,382 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:55:02,382 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 20:55:02,383 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 20:55:02,383 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:55:02,383 INFO L87 Difference]: Start difference. First operand 132 states and 143 transitions. Second operand 5 states. [2018-01-24 20:55:02,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:55:02,709 INFO L93 Difference]: Finished difference Result 241 states and 261 transitions. [2018-01-24 20:55:02,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 20:55:02,710 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2018-01-24 20:55:02,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:55:02,712 INFO L225 Difference]: With dead ends: 241 [2018-01-24 20:55:02,712 INFO L226 Difference]: Without dead ends: 240 [2018-01-24 20:55:02,713 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 [2018-01-24 20:55:02,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2018-01-24 20:55:02,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 131. [2018-01-24 20:55:02,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-01-24 20:55:02,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 142 transitions. [2018-01-24 20:55:02,727 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 142 transitions. Word has length 16 [2018-01-24 20:55:02,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:55:02,727 INFO L432 AbstractCegarLoop]: Abstraction has 131 states and 142 transitions. [2018-01-24 20:55:02,727 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 20:55:02,727 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 142 transitions. [2018-01-24 20:55:02,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-01-24 20:55:02,728 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:55:02,728 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] [2018-01-24 20:55:02,728 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:55:02,729 INFO L82 PathProgramCache]: Analyzing trace with hash -2104820849, now seen corresponding path program 1 times [2018-01-24 20:55:02,729 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:55:02,730 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:55:02,730 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:55:02,730 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:55:02,730 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:55:02,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:55:02,753 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:55:02,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:55:02,840 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:55:02,840 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 20:55:02,840 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:55:02,840 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 20:55:02,840 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 20:55:02,841 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 20:55:02,841 INFO L87 Difference]: Start difference. First operand 131 states and 142 transitions. Second operand 4 states. [2018-01-24 20:55:03,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:55:03,002 INFO L93 Difference]: Finished difference Result 151 states and 162 transitions. [2018-01-24 20:55:03,003 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 20:55:03,003 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2018-01-24 20:55:03,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:55:03,004 INFO L225 Difference]: With dead ends: 151 [2018-01-24 20:55:03,004 INFO L226 Difference]: Without dead ends: 134 [2018-01-24 20:55:03,004 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:55:03,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2018-01-24 20:55:03,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 126. [2018-01-24 20:55:03,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2018-01-24 20:55:03,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 142 transitions. [2018-01-24 20:55:03,014 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 142 transitions. Word has length 20 [2018-01-24 20:55:03,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:55:03,015 INFO L432 AbstractCegarLoop]: Abstraction has 126 states and 142 transitions. [2018-01-24 20:55:03,015 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 20:55:03,015 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 142 transitions. [2018-01-24 20:55:03,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-01-24 20:55:03,016 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:55:03,016 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] [2018-01-24 20:55:03,016 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:55:03,016 INFO L82 PathProgramCache]: Analyzing trace with hash -2104820848, now seen corresponding path program 1 times [2018-01-24 20:55:03,016 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:55:03,017 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:55:03,017 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:55:03,017 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:55:03,017 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:55:03,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:55:03,031 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:55:03,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:55:03,104 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:55:03,104 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-24 20:55:03,105 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:55:03,105 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-24 20:55:03,105 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-24 20:55:03,105 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-01-24 20:55:03,106 INFO L87 Difference]: Start difference. First operand 126 states and 142 transitions. Second operand 7 states. [2018-01-24 20:55:03,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:55:03,318 INFO L93 Difference]: Finished difference Result 188 states and 206 transitions. [2018-01-24 20:55:03,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 20:55:03,319 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2018-01-24 20:55:03,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:55:03,320 INFO L225 Difference]: With dead ends: 188 [2018-01-24 20:55:03,320 INFO L226 Difference]: Without dead ends: 176 [2018-01-24 20:55:03,320 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-01-24 20:55:03,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2018-01-24 20:55:03,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 157. [2018-01-24 20:55:03,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-01-24 20:55:03,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 182 transitions. [2018-01-24 20:55:03,332 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 182 transitions. Word has length 20 [2018-01-24 20:55:03,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:55:03,333 INFO L432 AbstractCegarLoop]: Abstraction has 157 states and 182 transitions. [2018-01-24 20:55:03,333 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-24 20:55:03,333 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 182 transitions. [2018-01-24 20:55:03,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-24 20:55:03,334 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:55:03,334 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] [2018-01-24 20:55:03,334 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:55:03,334 INFO L82 PathProgramCache]: Analyzing trace with hash 196761554, now seen corresponding path program 1 times [2018-01-24 20:55:03,334 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:55:03,335 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:55:03,336 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:55:03,336 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:55:03,336 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:55:03,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:55:03,348 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:55:03,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:55:03,414 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:55:03,414 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 20:55:03,414 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:55:03,415 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 20:55:03,415 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 20:55:03,415 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:55:03,415 INFO L87 Difference]: Start difference. First operand 157 states and 182 transitions. Second operand 5 states. [2018-01-24 20:55:03,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:55:03,672 INFO L93 Difference]: Finished difference Result 222 states and 258 transitions. [2018-01-24 20:55:03,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 20:55:03,673 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2018-01-24 20:55:03,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:55:03,674 INFO L225 Difference]: With dead ends: 222 [2018-01-24 20:55:03,674 INFO L226 Difference]: Without dead ends: 221 [2018-01-24 20:55:03,674 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 [2018-01-24 20:55:03,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2018-01-24 20:55:03,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 156. [2018-01-24 20:55:03,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2018-01-24 20:55:03,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 180 transitions. [2018-01-24 20:55:03,682 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 180 transitions. Word has length 22 [2018-01-24 20:55:03,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:55:03,683 INFO L432 AbstractCegarLoop]: Abstraction has 156 states and 180 transitions. [2018-01-24 20:55:03,683 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 20:55:03,683 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 180 transitions. [2018-01-24 20:55:03,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-24 20:55:03,683 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:55:03,684 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] [2018-01-24 20:55:03,684 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:55:03,684 INFO L82 PathProgramCache]: Analyzing trace with hash 196761555, now seen corresponding path program 1 times [2018-01-24 20:55:03,684 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:55:03,685 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:55:03,685 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:55:03,685 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:55:03,685 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:55:03,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:55:03,696 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:55:03,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:55:03,823 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:55:03,823 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 20:55:03,823 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:55:03,824 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 20:55:03,824 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 20:55:03,824 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:55:03,824 INFO L87 Difference]: Start difference. First operand 156 states and 180 transitions. Second operand 5 states. [2018-01-24 20:55:04,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:55:04,239 INFO L93 Difference]: Finished difference Result 241 states and 282 transitions. [2018-01-24 20:55:04,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 20:55:04,240 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2018-01-24 20:55:04,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:55:04,241 INFO L225 Difference]: With dead ends: 241 [2018-01-24 20:55:04,241 INFO L226 Difference]: Without dead ends: 240 [2018-01-24 20:55:04,241 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 [2018-01-24 20:55:04,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2018-01-24 20:55:04,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 155. [2018-01-24 20:55:04,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-01-24 20:55:04,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 178 transitions. [2018-01-24 20:55:04,250 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 178 transitions. Word has length 22 [2018-01-24 20:55:04,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:55:04,250 INFO L432 AbstractCegarLoop]: Abstraction has 155 states and 178 transitions. [2018-01-24 20:55:04,250 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 20:55:04,250 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 178 transitions. [2018-01-24 20:55:04,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-01-24 20:55:04,251 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:55:04,251 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] [2018-01-24 20:55:04,251 INFO L371 AbstractCegarLoop]: === Iteration 9 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:55:04,251 INFO L82 PathProgramCache]: Analyzing trace with hash 2133980856, now seen corresponding path program 1 times [2018-01-24 20:55:04,251 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:55:04,252 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:55:04,252 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:55:04,252 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:55:04,252 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:55:04,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:55:04,263 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:55:04,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:55:04,320 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:55:04,320 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-24 20:55:04,320 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:55:04,320 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 20:55:04,321 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 20:55:04,321 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:55:04,321 INFO L87 Difference]: Start difference. First operand 155 states and 178 transitions. Second operand 5 states. [2018-01-24 20:55:04,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:55:04,475 INFO L93 Difference]: Finished difference Result 202 states and 228 transitions. [2018-01-24 20:55:04,475 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 20:55:04,476 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2018-01-24 20:55:04,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:55:04,480 INFO L225 Difference]: With dead ends: 202 [2018-01-24 20:55:04,480 INFO L226 Difference]: Without dead ends: 167 [2018-01-24 20:55:04,480 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-24 20:55:04,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-01-24 20:55:04,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 155. [2018-01-24 20:55:04,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-01-24 20:55:04,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 176 transitions. [2018-01-24 20:55:04,490 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 176 transitions. Word has length 26 [2018-01-24 20:55:04,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:55:04,490 INFO L432 AbstractCegarLoop]: Abstraction has 155 states and 176 transitions. [2018-01-24 20:55:04,490 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 20:55:04,490 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 176 transitions. [2018-01-24 20:55:04,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-01-24 20:55:04,491 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:55:04,491 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:55:04,491 INFO L371 AbstractCegarLoop]: === Iteration 10 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:55:04,492 INFO L82 PathProgramCache]: Analyzing trace with hash 1951923348, now seen corresponding path program 1 times [2018-01-24 20:55:04,492 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:55:04,493 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:55:04,493 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:55:04,493 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:55:04,493 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:55:04,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:55:04,508 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:55:04,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:55:04,599 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:55:04,599 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-24 20:55:04,599 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:55:04,599 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-24 20:55:04,599 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-24 20:55:04,599 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-01-24 20:55:04,600 INFO L87 Difference]: Start difference. First operand 155 states and 176 transitions. Second operand 9 states. [2018-01-24 20:55:05,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:55:05,202 INFO L93 Difference]: Finished difference Result 156 states and 176 transitions. [2018-01-24 20:55:05,202 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-24 20:55:05,203 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2018-01-24 20:55:05,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:55:05,203 INFO L225 Difference]: With dead ends: 156 [2018-01-24 20:55:05,204 INFO L226 Difference]: Without dead ends: 155 [2018-01-24 20:55:05,204 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2018-01-24 20:55:05,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2018-01-24 20:55:05,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 154. [2018-01-24 20:55:05,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2018-01-24 20:55:05,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 175 transitions. [2018-01-24 20:55:05,212 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 175 transitions. Word has length 26 [2018-01-24 20:55:05,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:55:05,213 INFO L432 AbstractCegarLoop]: Abstraction has 154 states and 175 transitions. [2018-01-24 20:55:05,213 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-24 20:55:05,213 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 175 transitions. [2018-01-24 20:55:05,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-01-24 20:55:05,214 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:55:05,214 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] [2018-01-24 20:55:05,215 INFO L371 AbstractCegarLoop]: === Iteration 11 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:55:05,215 INFO L82 PathProgramCache]: Analyzing trace with hash 1951923349, now seen corresponding path program 1 times [2018-01-24 20:55:05,215 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:55:05,216 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:55:05,216 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:55:05,216 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:55:05,216 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:55:05,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:55:05,230 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:55:05,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:55:05,471 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:55:05,471 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-01-24 20:55:05,471 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:55:05,472 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-24 20:55:05,472 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-24 20:55:05,472 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-01-24 20:55:05,472 INFO L87 Difference]: Start difference. First operand 154 states and 175 transitions. Second operand 10 states. [2018-01-24 20:55:06,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:55:06,294 INFO L93 Difference]: Finished difference Result 157 states and 177 transitions. [2018-01-24 20:55:06,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-24 20:55:06,295 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 26 [2018-01-24 20:55:06,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:55:06,296 INFO L225 Difference]: With dead ends: 157 [2018-01-24 20:55:06,296 INFO L226 Difference]: Without dead ends: 146 [2018-01-24 20:55:06,296 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=129, Invalid=291, Unknown=0, NotChecked=0, Total=420 [2018-01-24 20:55:06,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-01-24 20:55:06,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 134. [2018-01-24 20:55:06,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2018-01-24 20:55:06,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 154 transitions. [2018-01-24 20:55:06,305 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 154 transitions. Word has length 26 [2018-01-24 20:55:06,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:55:06,305 INFO L432 AbstractCegarLoop]: Abstraction has 134 states and 154 transitions. [2018-01-24 20:55:06,305 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-24 20:55:06,305 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 154 transitions. [2018-01-24 20:55:06,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-24 20:55:06,306 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:55:06,307 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] [2018-01-24 20:55:06,307 INFO L371 AbstractCegarLoop]: === Iteration 12 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:55:06,307 INFO L82 PathProgramCache]: Analyzing trace with hash -1846863039, now seen corresponding path program 1 times [2018-01-24 20:55:06,307 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:55:06,308 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:55:06,308 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:55:06,308 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:55:06,309 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:55:06,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:55:06,321 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:55:06,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:55:06,359 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:55:06,359 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 20:55:06,359 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:55:06,359 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 20:55:06,359 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 20:55:06,360 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 20:55:06,360 INFO L87 Difference]: Start difference. First operand 134 states and 154 transitions. Second operand 4 states. [2018-01-24 20:55:06,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:55:06,411 INFO L93 Difference]: Finished difference Result 234 states and 273 transitions. [2018-01-24 20:55:06,411 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 20:55:06,411 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2018-01-24 20:55:06,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:55:06,413 INFO L225 Difference]: With dead ends: 234 [2018-01-24 20:55:06,413 INFO L226 Difference]: Without dead ends: 160 [2018-01-24 20:55:06,414 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 [2018-01-24 20:55:06,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2018-01-24 20:55:06,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 138. [2018-01-24 20:55:06,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2018-01-24 20:55:06,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 158 transitions. [2018-01-24 20:55:06,426 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 158 transitions. Word has length 29 [2018-01-24 20:55:06,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:55:06,426 INFO L432 AbstractCegarLoop]: Abstraction has 138 states and 158 transitions. [2018-01-24 20:55:06,426 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 20:55:06,426 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 158 transitions. [2018-01-24 20:55:06,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-01-24 20:55:06,428 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:55:06,428 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] [2018-01-24 20:55:06,428 INFO L371 AbstractCegarLoop]: === Iteration 13 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:55:06,428 INFO L82 PathProgramCache]: Analyzing trace with hash 2044037406, now seen corresponding path program 1 times [2018-01-24 20:55:06,428 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:55:06,429 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:55:06,429 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:55:06,429 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:55:06,429 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:55:06,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:55:06,443 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:55:06,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:55:06,619 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:55:06,619 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-01-24 20:55:06,619 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:55:06,620 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-24 20:55:06,620 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-24 20:55:06,620 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-01-24 20:55:06,620 INFO L87 Difference]: Start difference. First operand 138 states and 158 transitions. Second operand 8 states. [2018-01-24 20:55:07,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:55:07,031 INFO L93 Difference]: Finished difference Result 252 states and 286 transitions. [2018-01-24 20:55:07,032 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-24 20:55:07,032 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2018-01-24 20:55:07,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:55:07,033 INFO L225 Difference]: With dead ends: 252 [2018-01-24 20:55:07,033 INFO L226 Difference]: Without dead ends: 251 [2018-01-24 20:55:07,033 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2018-01-24 20:55:07,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2018-01-24 20:55:07,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 155. [2018-01-24 20:55:07,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-01-24 20:55:07,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 179 transitions. [2018-01-24 20:55:07,050 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 179 transitions. Word has length 31 [2018-01-24 20:55:07,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:55:07,050 INFO L432 AbstractCegarLoop]: Abstraction has 155 states and 179 transitions. [2018-01-24 20:55:07,050 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-24 20:55:07,050 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 179 transitions. [2018-01-24 20:55:07,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-01-24 20:55:07,052 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:55:07,052 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] [2018-01-24 20:55:07,052 INFO L371 AbstractCegarLoop]: === Iteration 14 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:55:07,052 INFO L82 PathProgramCache]: Analyzing trace with hash 2044037407, now seen corresponding path program 1 times [2018-01-24 20:55:07,052 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:55:07,053 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:55:07,054 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:55:07,054 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:55:07,054 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:55:07,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:55:07,068 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:55:07,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:55:07,182 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:55:07,182 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-01-24 20:55:07,182 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:55:07,183 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-24 20:55:07,187 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-24 20:55:07,187 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-01-24 20:55:07,188 INFO L87 Difference]: Start difference. First operand 155 states and 179 transitions. Second operand 7 states. [2018-01-24 20:55:07,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:55:07,534 INFO L93 Difference]: Finished difference Result 342 states and 391 transitions. [2018-01-24 20:55:07,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-01-24 20:55:07,575 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 31 [2018-01-24 20:55:07,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:55:07,576 INFO L225 Difference]: With dead ends: 342 [2018-01-24 20:55:07,576 INFO L226 Difference]: Without dead ends: 266 [2018-01-24 20:55:07,577 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2018-01-24 20:55:07,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2018-01-24 20:55:07,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 151. [2018-01-24 20:55:07,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-01-24 20:55:07,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 173 transitions. [2018-01-24 20:55:07,586 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 173 transitions. Word has length 31 [2018-01-24 20:55:07,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:55:07,586 INFO L432 AbstractCegarLoop]: Abstraction has 151 states and 173 transitions. [2018-01-24 20:55:07,586 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-24 20:55:07,586 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 173 transitions. [2018-01-24 20:55:07,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-01-24 20:55:07,587 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:55:07,587 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:55:07,587 INFO L371 AbstractCegarLoop]: === Iteration 15 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:55:07,587 INFO L82 PathProgramCache]: Analyzing trace with hash -638053953, now seen corresponding path program 1 times [2018-01-24 20:55:07,587 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:55:07,588 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:55:07,588 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:55:07,588 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:55:07,588 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:55:07,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:55:07,604 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:55:07,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:55:07,760 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:55:07,760 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 20:55:07,760 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:55:07,760 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 20:55:07,760 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 20:55:07,760 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:55:07,760 INFO L87 Difference]: Start difference. First operand 151 states and 173 transitions. Second operand 5 states. [2018-01-24 20:55:08,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:55:08,110 INFO L93 Difference]: Finished difference Result 259 states and 296 transitions. [2018-01-24 20:55:08,111 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-24 20:55:08,111 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2018-01-24 20:55:08,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:55:08,112 INFO L225 Difference]: With dead ends: 259 [2018-01-24 20:55:08,113 INFO L226 Difference]: Without dead ends: 258 [2018-01-24 20:55:08,113 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-24 20:55:08,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2018-01-24 20:55:08,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 150. [2018-01-24 20:55:08,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2018-01-24 20:55:08,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 172 transitions. [2018-01-24 20:55:08,127 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 172 transitions. Word has length 33 [2018-01-24 20:55:08,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:55:08,128 INFO L432 AbstractCegarLoop]: Abstraction has 150 states and 172 transitions. [2018-01-24 20:55:08,128 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 20:55:08,128 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 172 transitions. [2018-01-24 20:55:08,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-01-24 20:55:08,129 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:55:08,129 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:55:08,129 INFO L371 AbstractCegarLoop]: === Iteration 16 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:55:08,129 INFO L82 PathProgramCache]: Analyzing trace with hash -638053952, now seen corresponding path program 1 times [2018-01-24 20:55:08,130 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:55:08,130 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:55:08,131 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:55:08,131 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:55:08,131 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:55:08,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:55:08,149 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:55:08,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:55:08,244 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:55:08,244 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 20:55:08,244 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:55:08,244 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 20:55:08,245 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 20:55:08,245 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:55:08,245 INFO L87 Difference]: Start difference. First operand 150 states and 172 transitions. Second operand 5 states. [2018-01-24 20:55:08,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:55:08,656 INFO L93 Difference]: Finished difference Result 259 states and 299 transitions. [2018-01-24 20:55:08,656 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 20:55:08,656 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2018-01-24 20:55:08,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:55:08,658 INFO L225 Difference]: With dead ends: 259 [2018-01-24 20:55:08,658 INFO L226 Difference]: Without dead ends: 258 [2018-01-24 20:55:08,659 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 [2018-01-24 20:55:08,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2018-01-24 20:55:08,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 149. [2018-01-24 20:55:08,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-01-24 20:55:08,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 171 transitions. [2018-01-24 20:55:08,671 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 171 transitions. Word has length 33 [2018-01-24 20:55:08,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:55:08,672 INFO L432 AbstractCegarLoop]: Abstraction has 149 states and 171 transitions. [2018-01-24 20:55:08,672 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 20:55:08,672 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 171 transitions. [2018-01-24 20:55:08,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-01-24 20:55:08,673 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:55:08,673 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:55:08,673 INFO L371 AbstractCegarLoop]: === Iteration 17 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:55:08,673 INFO L82 PathProgramCache]: Analyzing trace with hash 851008324, now seen corresponding path program 1 times [2018-01-24 20:55:08,673 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:55:08,674 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:55:08,674 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:55:08,674 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:55:08,674 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:55:08,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:55:08,688 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:55:08,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:55:08,865 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:55:08,865 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-24 20:55:08,866 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:55:08,866 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-24 20:55:08,866 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-24 20:55:08,866 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-01-24 20:55:08,867 INFO L87 Difference]: Start difference. First operand 149 states and 171 transitions. Second operand 9 states. [2018-01-24 20:55:09,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:55:09,850 INFO L93 Difference]: Finished difference Result 412 states and 468 transitions. [2018-01-24 20:55:09,850 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-01-24 20:55:09,850 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2018-01-24 20:55:09,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:55:09,851 INFO L225 Difference]: With dead ends: 412 [2018-01-24 20:55:09,852 INFO L226 Difference]: Without dead ends: 411 [2018-01-24 20:55:09,852 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2018-01-24 20:55:09,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2018-01-24 20:55:09,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 165. [2018-01-24 20:55:09,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-01-24 20:55:09,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 191 transitions. [2018-01-24 20:55:09,863 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 191 transitions. Word has length 34 [2018-01-24 20:55:09,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:55:09,863 INFO L432 AbstractCegarLoop]: Abstraction has 165 states and 191 transitions. [2018-01-24 20:55:09,863 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-24 20:55:09,863 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 191 transitions. [2018-01-24 20:55:09,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-01-24 20:55:09,864 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:55:09,864 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:55:09,864 INFO L371 AbstractCegarLoop]: === Iteration 18 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:55:09,864 INFO L82 PathProgramCache]: Analyzing trace with hash 851008325, now seen corresponding path program 1 times [2018-01-24 20:55:09,865 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:55:09,865 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:55:09,866 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:55:09,866 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:55:09,866 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:55:09,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:55:09,877 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:55:09,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:55:09,985 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:55:09,985 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-24 20:55:09,985 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:55:09,985 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-24 20:55:09,985 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-24 20:55:09,985 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-01-24 20:55:09,986 INFO L87 Difference]: Start difference. First operand 165 states and 191 transitions. Second operand 9 states. [2018-01-24 20:55:10,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:55:10,794 INFO L93 Difference]: Finished difference Result 319 states and 362 transitions. [2018-01-24 20:55:10,795 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-24 20:55:10,795 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2018-01-24 20:55:10,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:55:10,796 INFO L225 Difference]: With dead ends: 319 [2018-01-24 20:55:10,796 INFO L226 Difference]: Without dead ends: 318 [2018-01-24 20:55:10,796 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2018-01-24 20:55:10,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2018-01-24 20:55:10,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 165. [2018-01-24 20:55:10,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-01-24 20:55:10,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 190 transitions. [2018-01-24 20:55:10,806 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 190 transitions. Word has length 34 [2018-01-24 20:55:10,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:55:10,806 INFO L432 AbstractCegarLoop]: Abstraction has 165 states and 190 transitions. [2018-01-24 20:55:10,806 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-24 20:55:10,806 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 190 transitions. [2018-01-24 20:55:10,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-01-24 20:55:10,806 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:55:10,806 INFO L322 BasicCegarLoop]: trace histogram [2, 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, 1, 1, 1] [2018-01-24 20:55:10,807 INFO L371 AbstractCegarLoop]: === Iteration 19 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:55:10,807 INFO L82 PathProgramCache]: Analyzing trace with hash -1753433128, now seen corresponding path program 1 times [2018-01-24 20:55:10,807 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:55:10,807 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:55:10,808 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:55:10,808 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:55:10,808 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:55:10,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:55:10,815 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:55:10,873 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:55:10,874 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:55:10,874 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-24 20:55:10,874 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:55:10,874 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 20:55:10,874 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 20:55:10,875 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:55:10,875 INFO L87 Difference]: Start difference. First operand 165 states and 190 transitions. Second operand 5 states. [2018-01-24 20:55:10,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:55:10,926 INFO L93 Difference]: Finished difference Result 258 states and 297 transitions. [2018-01-24 20:55:10,926 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-24 20:55:10,926 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2018-01-24 20:55:10,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:55:10,928 INFO L225 Difference]: With dead ends: 258 [2018-01-24 20:55:10,928 INFO L226 Difference]: Without dead ends: 189 [2018-01-24 20:55:10,928 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-24 20:55:10,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2018-01-24 20:55:10,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 169. [2018-01-24 20:55:10,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-01-24 20:55:10,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 194 transitions. [2018-01-24 20:55:10,943 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 194 transitions. Word has length 37 [2018-01-24 20:55:10,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:55:10,943 INFO L432 AbstractCegarLoop]: Abstraction has 169 states and 194 transitions. [2018-01-24 20:55:10,943 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 20:55:10,943 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 194 transitions. [2018-01-24 20:55:10,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-01-24 20:55:10,944 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:55:10,944 INFO L322 BasicCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1] [2018-01-24 20:55:10,944 INFO L371 AbstractCegarLoop]: === Iteration 20 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:55:10,945 INFO L82 PathProgramCache]: Analyzing trace with hash -110193443, now seen corresponding path program 1 times [2018-01-24 20:55:10,945 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:55:10,945 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:55:10,946 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:55:10,946 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:55:10,946 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:55:10,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:55:10,958 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:55:11,100 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:55:11,101 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 20:55:11,101 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-24 20:55:11,102 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 40 with the following transitions: [2018-01-24 20:55:11,105 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [27], [38], [39], [42], [46], [50], [52], [55], [117], [121], [127], [131], [132], [133], [135], [144], [146], [158], [160], [165], [166], [169], [175], [179], [185], [188], [232], [233], [237], [238], [239] [2018-01-24 20:55:11,178 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-24 20:55:11,178 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