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/list-ext-properties/test-0513_1_true-valid-memsafety.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 20:31:50,410 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 20:31:50,413 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 20:31:50,428 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 20:31:50,428 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 20:31:50,429 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 20:31:50,429 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 20:31:50,430 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 20:31:50,432 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 20:31:50,433 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 20:31:50,433 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 20:31:50,434 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 20:31:50,434 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 20:31:50,435 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 20:31:50,436 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 20:31:50,439 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 20:31:50,441 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 20:31:50,443 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 20:31:50,444 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 20:31:50,445 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 20:31:50,447 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-24 20:31:50,448 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-24 20:31:50,448 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-24 20:31:50,449 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-24 20:31:50,450 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-24 20:31:50,451 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-24 20:31:50,451 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-24 20:31:50,452 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-24 20:31:50,452 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-24 20:31:50,452 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 20:31:50,453 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 20:31:50,453 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 20:31:50,463 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 20:31:50,463 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 20:31:50,464 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 20:31:50,464 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 20:31:50,465 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 20:31:50,465 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-24 20:31:50,465 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 20:31:50,465 INFO L133 SettingsManager]: * Precise comparison operator=true [2018-01-24 20:31:50,465 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 20:31:50,466 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 20:31:50,466 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 20:31:50,466 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 20:31:50,467 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 20:31:50,467 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 20:31:50,467 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 20:31:50,467 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 20:31:50,467 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 20:31:50,468 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 20:31:50,468 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 20:31:50,468 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 20:31:50,468 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 20:31:50,468 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 20:31:50,468 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 20:31:50,469 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 20:31:50,469 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 20:31:50,469 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 20:31:50,469 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 20:31:50,470 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 20:31:50,470 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 20:31:50,470 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 20:31:50,470 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-24 20:31:50,470 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 20:31:50,470 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 20:31:50,471 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 20:31:50,471 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-24 20:31:50,472 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 20:31:50,472 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 20:31:50,508 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 20:31:50,521 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 20:31:50,525 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 20:31:50,526 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 20:31:50,526 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 20:31:50,527 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext-properties/test-0513_1_true-valid-memsafety.i [2018-01-24 20:31:50,696 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 20:31:50,702 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 20:31:50,703 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 20:31:50,703 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 20:31:50,708 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 20:31:50,708 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 08:31:50" (1/1) ... [2018-01-24 20:31:50,711 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@365d5287 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:31:50, skipping insertion in model container [2018-01-24 20:31:50,711 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 08:31:50" (1/1) ... [2018-01-24 20:31:50,726 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 20:31:50,763 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 20:31:50,877 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 20:31:50,900 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 20:31:50,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:31:50 WrapperNode [2018-01-24 20:31:50,911 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 20:31:50,911 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 20:31:50,912 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 20:31:50,912 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 20:31:50,926 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:31:50" (1/1) ... [2018-01-24 20:31:50,926 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:31:50" (1/1) ... [2018-01-24 20:31:50,935 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:31:50" (1/1) ... [2018-01-24 20:31:50,936 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:31:50" (1/1) ... [2018-01-24 20:31:50,942 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:31:50" (1/1) ... [2018-01-24 20:31:50,947 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:31:50" (1/1) ... [2018-01-24 20:31:50,949 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:31:50" (1/1) ... [2018-01-24 20:31:50,951 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 20:31:50,951 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 20:31:50,952 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 20:31:50,952 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 20:31:50,952 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:31:50" (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 20:31:50,996 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 20:31:50,996 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 20:31:50,997 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 20:31:50,997 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-24 20:31:50,997 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-24 20:31:50,997 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-24 20:31:50,997 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-24 20:31:50,997 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 20:31:50,997 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 20:31:50,997 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 20:31:50,997 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-24 20:31:50,998 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-24 20:31:50,998 INFO L128 BoogieDeclarations]: Found specification of procedure abort [2018-01-24 20:31:50,998 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 20:31:50,998 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 20:31:50,998 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 20:31:50,998 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 20:31:51,501 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 20:31:51,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 08:31:51 BoogieIcfgContainer [2018-01-24 20:31:51,501 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 20:31:51,502 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-24 20:31:51,502 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-24 20:31:51,505 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-24 20:31:51,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.01 08:31:50" (1/3) ... [2018-01-24 20:31:51,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49cde122 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 08:31:51, skipping insertion in model container [2018-01-24 20:31:51,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:31:50" (2/3) ... [2018-01-24 20:31:51,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49cde122 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 08:31:51, skipping insertion in model container [2018-01-24 20:31:51,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 08:31:51" (3/3) ... [2018-01-24 20:31:51,508 INFO L105 eAbstractionObserver]: Analyzing ICFG test-0513_1_true-valid-memsafety.i [2018-01-24 20:31:51,515 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-24 20:31:51,521 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 67 error locations. [2018-01-24 20:31:51,574 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-24 20:31:51,574 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-24 20:31:51,575 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-24 20:31:51,575 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-24 20:31:51,575 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-24 20:31:51,575 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-24 20:31:51,575 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-24 20:31:51,575 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-24 20:31:51,576 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-24 20:31:51,602 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states. [2018-01-24 20:31:51,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-01-24 20:31:51,609 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:31:51,610 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:31:51,610 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr51RequiresViolation, mainErr66EnsuresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, 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, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:31:51,616 INFO L82 PathProgramCache]: Analyzing trace with hash 1366809009, now seen corresponding path program 1 times [2018-01-24 20:31:51,619 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:31:51,679 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:31:51,679 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:31:51,679 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:31:51,680 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:31:51,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:31:51,730 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:31:51,760 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 20:31:51,763 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:31:51,763 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-24 20:31:51,763 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:31:51,767 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-24 20:31:51,781 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-24 20:31:51,782 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-24 20:31:51,784 INFO L87 Difference]: Start difference. First operand 155 states. Second operand 2 states. [2018-01-24 20:31:51,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:31:51,900 INFO L93 Difference]: Finished difference Result 304 states and 342 transitions. [2018-01-24 20:31:51,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-24 20:31:51,902 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2018-01-24 20:31:51,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:31:51,912 INFO L225 Difference]: With dead ends: 304 [2018-01-24 20:31:51,913 INFO L226 Difference]: Without dead ends: 152 [2018-01-24 20:31:51,918 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-24 20:31:51,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2018-01-24 20:31:51,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2018-01-24 20:31:51,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2018-01-24 20:31:51,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 166 transitions. [2018-01-24 20:31:51,955 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 166 transitions. Word has length 9 [2018-01-24 20:31:51,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:31:51,955 INFO L432 AbstractCegarLoop]: Abstraction has 152 states and 166 transitions. [2018-01-24 20:31:51,955 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-24 20:31:51,956 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 166 transitions. [2018-01-24 20:31:51,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-01-24 20:31:51,956 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:31:51,956 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:31:51,956 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr51RequiresViolation, mainErr66EnsuresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, 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, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:31:51,956 INFO L82 PathProgramCache]: Analyzing trace with hash -26359990, now seen corresponding path program 1 times [2018-01-24 20:31:51,957 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:31:51,957 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:31:51,957 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:31:51,958 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:31:51,958 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:31:51,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:31:51,973 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:31:52,006 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 20:31:52,006 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:31:52,006 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-24 20:31:52,006 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:31:52,008 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-24 20:31:52,009 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-24 20:31:52,009 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-24 20:31:52,009 INFO L87 Difference]: Start difference. First operand 152 states and 166 transitions. Second operand 3 states. [2018-01-24 20:31:52,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:31:52,213 INFO L93 Difference]: Finished difference Result 197 states and 214 transitions. [2018-01-24 20:31:52,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-24 20:31:52,213 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2018-01-24 20:31:52,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:31:52,216 INFO L225 Difference]: With dead ends: 197 [2018-01-24 20:31:52,217 INFO L226 Difference]: Without dead ends: 195 [2018-01-24 20:31:52,217 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-24 20:31:52,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-01-24 20:31:52,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 157. [2018-01-24 20:31:52,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-01-24 20:31:52,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 173 transitions. [2018-01-24 20:31:52,228 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 173 transitions. Word has length 12 [2018-01-24 20:31:52,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:31:52,228 INFO L432 AbstractCegarLoop]: Abstraction has 157 states and 173 transitions. [2018-01-24 20:31:52,229 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-24 20:31:52,229 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 173 transitions. [2018-01-24 20:31:52,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-01-24 20:31:52,229 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:31:52,229 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:31:52,229 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr51RequiresViolation, mainErr66EnsuresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, 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, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:31:52,229 INFO L82 PathProgramCache]: Analyzing trace with hash -817163438, now seen corresponding path program 1 times [2018-01-24 20:31:52,230 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:31:52,230 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:31:52,231 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:31:52,231 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:31:52,231 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:31:52,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:31:52,242 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:31:52,276 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 20:31:52,277 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:31:52,277 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 20:31:52,277 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:31:52,277 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-24 20:31:52,278 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-24 20:31:52,278 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-24 20:31:52,278 INFO L87 Difference]: Start difference. First operand 157 states and 173 transitions. Second operand 3 states. [2018-01-24 20:31:52,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:31:52,342 INFO L93 Difference]: Finished difference Result 326 states and 359 transitions. [2018-01-24 20:31:52,342 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-24 20:31:52,342 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2018-01-24 20:31:52,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:31:52,344 INFO L225 Difference]: With dead ends: 326 [2018-01-24 20:31:52,344 INFO L226 Difference]: Without dead ends: 179 [2018-01-24 20:31:52,345 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-24 20:31:52,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-01-24 20:31:52,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 169. [2018-01-24 20:31:52,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-01-24 20:31:52,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 195 transitions. [2018-01-24 20:31:52,355 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 195 transitions. Word has length 13 [2018-01-24 20:31:52,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:31:52,356 INFO L432 AbstractCegarLoop]: Abstraction has 169 states and 195 transitions. [2018-01-24 20:31:52,356 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-24 20:31:52,356 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 195 transitions. [2018-01-24 20:31:52,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-01-24 20:31:52,357 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:31:52,357 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:31:52,357 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr51RequiresViolation, mainErr66EnsuresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, 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, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:31:52,357 INFO L82 PathProgramCache]: Analyzing trace with hash 437426512, now seen corresponding path program 1 times [2018-01-24 20:31:52,357 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:31:52,358 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:31:52,358 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:31:52,358 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:31:52,359 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:31:52,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:31:52,371 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:31:52,406 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 20:31:52,407 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:31:52,407 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 20:31:52,407 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:31:52,407 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 20:31:52,408 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 20:31:52,408 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 20:31:52,408 INFO L87 Difference]: Start difference. First operand 169 states and 195 transitions. Second operand 4 states. [2018-01-24 20:31:52,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:31:52,720 INFO L93 Difference]: Finished difference Result 245 states and 275 transitions. [2018-01-24 20:31:52,721 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 20:31:52,721 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-01-24 20:31:52,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:31:52,722 INFO L225 Difference]: With dead ends: 245 [2018-01-24 20:31:52,722 INFO L226 Difference]: Without dead ends: 239 [2018-01-24 20:31:52,722 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 20:31:52,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2018-01-24 20:31:52,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 169. [2018-01-24 20:31:52,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-01-24 20:31:52,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 195 transitions. [2018-01-24 20:31:52,734 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 195 transitions. Word has length 14 [2018-01-24 20:31:52,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:31:52,734 INFO L432 AbstractCegarLoop]: Abstraction has 169 states and 195 transitions. [2018-01-24 20:31:52,734 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 20:31:52,734 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 195 transitions. [2018-01-24 20:31:52,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-01-24 20:31:52,735 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:31:52,735 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:31:52,735 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr51RequiresViolation, mainErr66EnsuresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, 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, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:31:52,735 INFO L82 PathProgramCache]: Analyzing trace with hash 437426513, now seen corresponding path program 1 times [2018-01-24 20:31:52,735 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:31:52,737 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:31:52,737 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:31:52,737 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:31:52,737 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:31:52,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:31:52,748 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:31:52,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:31:52,805 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:31:52,806 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 20:31:52,806 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:31:52,806 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 20:31:52,806 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 20:31:52,807 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 20:31:52,807 INFO L87 Difference]: Start difference. First operand 169 states and 195 transitions. Second operand 4 states. [2018-01-24 20:31:52,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:31:52,932 INFO L93 Difference]: Finished difference Result 169 states and 195 transitions. [2018-01-24 20:31:52,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 20:31:52,932 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-01-24 20:31:52,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:31:52,933 INFO L225 Difference]: With dead ends: 169 [2018-01-24 20:31:52,934 INFO L226 Difference]: Without dead ends: 165 [2018-01-24 20:31:52,934 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 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 20:31:52,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2018-01-24 20:31:52,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2018-01-24 20:31:52,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-01-24 20:31:52,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 187 transitions. [2018-01-24 20:31:52,947 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 187 transitions. Word has length 14 [2018-01-24 20:31:52,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:31:52,947 INFO L432 AbstractCegarLoop]: Abstraction has 165 states and 187 transitions. [2018-01-24 20:31:52,947 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 20:31:52,948 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 187 transitions. [2018-01-24 20:31:52,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-01-24 20:31:52,948 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:31:52,949 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:31:52,949 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr51RequiresViolation, mainErr66EnsuresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, 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, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:31:52,949 INFO L82 PathProgramCache]: Analyzing trace with hash 809095649, now seen corresponding path program 1 times [2018-01-24 20:31:52,949 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:31:52,950 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:31:52,951 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:31:52,951 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:31:52,951 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:31:52,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:31:52,965 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:31:53,019 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 20:31:53,020 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:31:53,020 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-24 20:31:53,020 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:31:53,020 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 20:31:53,020 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 20:31:53,020 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:31:53,020 INFO L87 Difference]: Start difference. First operand 165 states and 187 transitions. Second operand 5 states. [2018-01-24 20:31:53,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:31:53,068 INFO L93 Difference]: Finished difference Result 451 states and 510 transitions. [2018-01-24 20:31:53,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 20:31:53,068 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2018-01-24 20:31:53,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:31:53,070 INFO L225 Difference]: With dead ends: 451 [2018-01-24 20:31:53,071 INFO L226 Difference]: Without dead ends: 306 [2018-01-24 20:31:53,072 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-01-24 20:31:53,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2018-01-24 20:31:53,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 165. [2018-01-24 20:31:53,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-01-24 20:31:53,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 185 transitions. [2018-01-24 20:31:53,081 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 185 transitions. Word has length 21 [2018-01-24 20:31:53,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:31:53,081 INFO L432 AbstractCegarLoop]: Abstraction has 165 states and 185 transitions. [2018-01-24 20:31:53,082 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 20:31:53,082 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 185 transitions. [2018-01-24 20:31:53,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-24 20:31:53,083 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:31:53,083 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 20:31:53,083 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr51RequiresViolation, mainErr66EnsuresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, 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, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:31:53,083 INFO L82 PathProgramCache]: Analyzing trace with hash -836569732, now seen corresponding path program 1 times [2018-01-24 20:31:53,084 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:31:53,085 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:31:53,085 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:31:53,085 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:31:53,085 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:31:53,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:31:53,099 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:31:53,130 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 20:31:53,130 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:31:53,130 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 20:31:53,130 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:31:53,131 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 20:31:53,131 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 20:31:53,131 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 20:31:53,132 INFO L87 Difference]: Start difference. First operand 165 states and 185 transitions. Second operand 4 states. [2018-01-24 20:31:53,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:31:53,325 INFO L93 Difference]: Finished difference Result 203 states and 224 transitions. [2018-01-24 20:31:53,326 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 20:31:53,326 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2018-01-24 20:31:53,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:31:53,328 INFO L225 Difference]: With dead ends: 203 [2018-01-24 20:31:53,328 INFO L226 Difference]: Without dead ends: 199 [2018-01-24 20:31:53,329 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 20:31:53,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2018-01-24 20:31:53,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 161. [2018-01-24 20:31:53,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-01-24 20:31:53,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 181 transitions. [2018-01-24 20:31:53,335 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 181 transitions. Word has length 22 [2018-01-24 20:31:53,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:31:53,336 INFO L432 AbstractCegarLoop]: Abstraction has 161 states and 181 transitions. [2018-01-24 20:31:53,336 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 20:31:53,336 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 181 transitions. [2018-01-24 20:31:53,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-24 20:31:53,336 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:31:53,337 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:31:53,337 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr51RequiresViolation, mainErr66EnsuresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, 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, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:31:53,337 INFO L82 PathProgramCache]: Analyzing trace with hash -836569731, now seen corresponding path program 1 times [2018-01-24 20:31:53,337 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:31:53,338 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:31:53,338 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:31:53,338 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:31:53,338 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:31:53,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:31:53,347 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:31:53,393 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 20:31:53,393 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:31:53,394 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 20:31:53,394 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:31:53,394 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 20:31:53,394 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 20:31:53,394 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 20:31:53,395 INFO L87 Difference]: Start difference. First operand 161 states and 181 transitions. Second operand 4 states. [2018-01-24 20:31:53,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:31:53,596 INFO L93 Difference]: Finished difference Result 161 states and 181 transitions. [2018-01-24 20:31:53,596 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 20:31:53,596 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2018-01-24 20:31:53,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:31:53,597 INFO L225 Difference]: With dead ends: 161 [2018-01-24 20:31:53,597 INFO L226 Difference]: Without dead ends: 158 [2018-01-24 20:31:53,597 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 20:31:53,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2018-01-24 20:31:53,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2018-01-24 20:31:53,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2018-01-24 20:31:53,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 178 transitions. [2018-01-24 20:31:53,604 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 178 transitions. Word has length 22 [2018-01-24 20:31:53,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:31:53,604 INFO L432 AbstractCegarLoop]: Abstraction has 158 states and 178 transitions. [2018-01-24 20:31:53,604 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 20:31:53,604 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 178 transitions. [2018-01-24 20:31:53,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-01-24 20:31:53,605 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:31:53,605 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] [2018-01-24 20:31:53,605 INFO L371 AbstractCegarLoop]: === Iteration 9 === [mainErr51RequiresViolation, mainErr66EnsuresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, 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, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:31:53,605 INFO L82 PathProgramCache]: Analyzing trace with hash 261861212, now seen corresponding path program 1 times [2018-01-24 20:31:53,605 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:31:53,606 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:31:53,606 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:31:53,606 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:31:53,606 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:31:53,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:31:53,622 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:31:53,689 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 20:31:53,689 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:31:53,689 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-24 20:31:53,689 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:31:53,690 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 20:31:53,690 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 20:31:53,690 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:31:53,690 INFO L87 Difference]: Start difference. First operand 158 states and 178 transitions. Second operand 5 states. [2018-01-24 20:31:53,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:31:53,815 INFO L93 Difference]: Finished difference Result 397 states and 446 transitions. [2018-01-24 20:31:53,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 20:31:53,816 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2018-01-24 20:31:53,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:31:53,817 INFO L225 Difference]: With dead ends: 397 [2018-01-24 20:31:53,818 INFO L226 Difference]: Without dead ends: 262 [2018-01-24 20:31:53,818 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 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 20:31:53,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2018-01-24 20:31:53,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 158. [2018-01-24 20:31:53,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2018-01-24 20:31:53,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 176 transitions. [2018-01-24 20:31:53,827 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 176 transitions. Word has length 31 [2018-01-24 20:31:53,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:31:53,828 INFO L432 AbstractCegarLoop]: Abstraction has 158 states and 176 transitions. [2018-01-24 20:31:53,828 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 20:31:53,828 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 176 transitions. [2018-01-24 20:31:53,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-01-24 20:31:53,829 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:31:53,829 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] [2018-01-24 20:31:53,829 INFO L371 AbstractCegarLoop]: === Iteration 10 === [mainErr51RequiresViolation, mainErr66EnsuresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, 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, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:31:53,829 INFO L82 PathProgramCache]: Analyzing trace with hash -472240768, now seen corresponding path program 1 times [2018-01-24 20:31:53,829 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:31:53,830 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:31:53,830 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:31:53,831 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:31:53,831 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:31:53,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:31:53,847 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:31:53,946 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 20:31:53,946 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:31:53,946 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 20:31:53,947 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:31:53,947 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 20:31:53,947 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 20:31:53,947 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:31:53,948 INFO L87 Difference]: Start difference. First operand 158 states and 176 transitions. Second operand 5 states. [2018-01-24 20:31:54,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:31:54,230 INFO L93 Difference]: Finished difference Result 263 states and 292 transitions. [2018-01-24 20:31:54,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 20:31:54,230 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2018-01-24 20:31:54,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:31:54,231 INFO L225 Difference]: With dead ends: 263 [2018-01-24 20:31:54,231 INFO L226 Difference]: Without dead ends: 253 [2018-01-24 20:31:54,232 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 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 20:31:54,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2018-01-24 20:31:54,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 200. [2018-01-24 20:31:54,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2018-01-24 20:31:54,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 257 transitions. [2018-01-24 20:31:54,239 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 257 transitions. Word has length 32 [2018-01-24 20:31:54,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:31:54,239 INFO L432 AbstractCegarLoop]: Abstraction has 200 states and 257 transitions. [2018-01-24 20:31:54,239 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 20:31:54,239 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 257 transitions. [2018-01-24 20:31:54,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-01-24 20:31:54,240 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:31:54,241 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] [2018-01-24 20:31:54,241 INFO L371 AbstractCegarLoop]: === Iteration 11 === [mainErr51RequiresViolation, mainErr66EnsuresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, 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, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:31:54,241 INFO L82 PathProgramCache]: Analyzing trace with hash -472240769, now seen corresponding path program 1 times [2018-01-24 20:31:54,241 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:31:54,242 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:31:54,242 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:31:54,242 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:31:54,243 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:31:54,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:31:54,257 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:31:54,320 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 20:31:54,320 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:31:54,321 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 20:31:54,321 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:31:54,321 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 20:31:54,321 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 20:31:54,321 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:31:54,321 INFO L87 Difference]: Start difference. First operand 200 states and 257 transitions. Second operand 5 states. [2018-01-24 20:31:54,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:31:54,445 INFO L93 Difference]: Finished difference Result 203 states and 259 transitions. [2018-01-24 20:31:54,446 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 20:31:54,446 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2018-01-24 20:31:54,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:31:54,447 INFO L225 Difference]: With dead ends: 203 [2018-01-24 20:31:54,447 INFO L226 Difference]: Without dead ends: 194 [2018-01-24 20:31:54,447 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-01-24 20:31:54,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2018-01-24 20:31:54,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 192. [2018-01-24 20:31:54,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2018-01-24 20:31:54,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 242 transitions. [2018-01-24 20:31:54,454 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 242 transitions. Word has length 32 [2018-01-24 20:31:54,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:31:54,455 INFO L432 AbstractCegarLoop]: Abstraction has 192 states and 242 transitions. [2018-01-24 20:31:54,455 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 20:31:54,455 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 242 transitions. [2018-01-24 20:31:54,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-01-24 20:31:54,456 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:31:54,456 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 20:31:54,456 INFO L371 AbstractCegarLoop]: === Iteration 12 === [mainErr51RequiresViolation, mainErr66EnsuresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, 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, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:31:54,457 INFO L82 PathProgramCache]: Analyzing trace with hash 456903790, now seen corresponding path program 1 times [2018-01-24 20:31:54,457 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:31:54,458 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:31:54,458 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:31:54,458 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:31:54,458 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:31:54,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:31:54,473 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:31:54,512 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 20:31:54,513 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:31:54,513 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 20:31:54,513 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:31:54,513 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 20:31:54,513 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 20:31:54,514 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-24 20:31:54,514 INFO L87 Difference]: Start difference. First operand 192 states and 242 transitions. Second operand 4 states. [2018-01-24 20:31:54,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:31:54,640 INFO L93 Difference]: Finished difference Result 529 states and 673 transitions. [2018-01-24 20:31:54,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 20:31:54,640 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2018-01-24 20:31:54,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:31:54,641 INFO L225 Difference]: With dead ends: 529 [2018-01-24 20:31:54,641 INFO L226 Difference]: Without dead ends: 353 [2018-01-24 20:31:54,642 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-24 20:31:54,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2018-01-24 20:31:54,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 193. [2018-01-24 20:31:54,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-01-24 20:31:54,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 241 transitions. [2018-01-24 20:31:54,651 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 241 transitions. Word has length 37 [2018-01-24 20:31:54,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:31:54,651 INFO L432 AbstractCegarLoop]: Abstraction has 193 states and 241 transitions. [2018-01-24 20:31:54,651 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 20:31:54,651 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 241 transitions. [2018-01-24 20:31:54,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-01-24 20:31:54,652 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:31:54,652 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 20:31:54,653 INFO L371 AbstractCegarLoop]: === Iteration 13 === [mainErr51RequiresViolation, mainErr66EnsuresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, 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, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:31:54,653 INFO L82 PathProgramCache]: Analyzing trace with hash -1168751179, now seen corresponding path program 1 times [2018-01-24 20:31:54,653 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:31:54,654 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:31:54,654 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:31:54,654 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:31:54,654 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:31:54,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:31:54,676 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:31:54,827 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 20:31:54,827 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:31:54,828 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-24 20:31:54,828 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:31:54,828 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-24 20:31:54,828 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-24 20:31:54,828 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-01-24 20:31:54,828 INFO L87 Difference]: Start difference. First operand 193 states and 241 transitions. Second operand 6 states. [2018-01-24 20:31:55,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:31:55,039 INFO L93 Difference]: Finished difference Result 369 states and 464 transitions. [2018-01-24 20:31:55,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 20:31:55,039 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39 [2018-01-24 20:31:55,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:31:55,041 INFO L225 Difference]: With dead ends: 369 [2018-01-24 20:31:55,041 INFO L226 Difference]: Without dead ends: 232 [2018-01-24 20:31:55,042 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-01-24 20:31:55,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2018-01-24 20:31:55,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 203. [2018-01-24 20:31:55,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-01-24 20:31:55,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 253 transitions. [2018-01-24 20:31:55,054 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 253 transitions. Word has length 39 [2018-01-24 20:31:55,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:31:55,054 INFO L432 AbstractCegarLoop]: Abstraction has 203 states and 253 transitions. [2018-01-24 20:31:55,054 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-24 20:31:55,055 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 253 transitions. [2018-01-24 20:31:55,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-01-24 20:31:55,055 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:31:55,055 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, 1, 1] [2018-01-24 20:31:55,056 INFO L371 AbstractCegarLoop]: === Iteration 14 === [mainErr51RequiresViolation, mainErr66EnsuresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, 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, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:31:55,056 INFO L82 PathProgramCache]: Analyzing trace with hash -1118408649, now seen corresponding path program 1 times [2018-01-24 20:31:55,056 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:31:55,057 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:31:55,057 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:31:55,057 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:31:55,057 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:31:55,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:31:55,078 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:31:55,549 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 20:31:55,550 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:31:55,550 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-01-24 20:31:55,550 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:31:55,550 INFO L409 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-01-24 20:31:55,550 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-01-24 20:31:55,550 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-01-24 20:31:55,551 INFO L87 Difference]: Start difference. First operand 203 states and 253 transitions. Second operand 11 states. [2018-01-24 20:31:56,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:31:56,207 INFO L93 Difference]: Finished difference Result 289 states and 345 transitions. [2018-01-24 20:31:56,207 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-01-24 20:31:56,207 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 41 [2018-01-24 20:31:56,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:31:56,208 INFO L225 Difference]: With dead ends: 289 [2018-01-24 20:31:56,208 INFO L226 Difference]: Without dead ends: 288 [2018-01-24 20:31:56,209 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2018-01-24 20:31:56,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2018-01-24 20:31:56,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 209. [2018-01-24 20:31:56,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2018-01-24 20:31:56,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 261 transitions. [2018-01-24 20:31:56,217 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 261 transitions. Word has length 41 [2018-01-24 20:31:56,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:31:56,218 INFO L432 AbstractCegarLoop]: Abstraction has 209 states and 261 transitions. [2018-01-24 20:31:56,218 INFO L433 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-01-24 20:31:56,218 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 261 transitions. [2018-01-24 20:31:56,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-01-24 20:31:56,219 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:31:56,219 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, 1, 1] [2018-01-24 20:31:56,219 INFO L371 AbstractCegarLoop]: === Iteration 15 === [mainErr51RequiresViolation, mainErr66EnsuresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, 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, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:31:56,219 INFO L82 PathProgramCache]: Analyzing trace with hash -1118408648, now seen corresponding path program 1 times [2018-01-24 20:31:56,219 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:31:56,220 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:31:56,220 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:31:56,220 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:31:56,220 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:31:56,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:31:56,239 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:31:56,744 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 20:31:56,744 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:31:56,744 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-01-24 20:31:56,744 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:31:56,745 INFO L409 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-01-24 20:31:56,745 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-01-24 20:31:56,745 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2018-01-24 20:31:56,745 INFO L87 Difference]: Start difference. First operand 209 states and 261 transitions. Second operand 12 states. [2018-01-24 20:31:57,110 WARN L146 SmtUtils]: Spent 176ms on a formula simplification. DAG size of input: 32 DAG size of output 30 [2018-01-24 20:31:57,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:31:57,754 INFO L93 Difference]: Finished difference Result 259 states and 313 transitions. [2018-01-24 20:31:57,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-01-24 20:31:57,755 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 41 [2018-01-24 20:31:57,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:31:57,756 INFO L225 Difference]: With dead ends: 259 [2018-01-24 20:31:57,756 INFO L226 Difference]: Without dead ends: 258 [2018-01-24 20:31:57,757 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=179, Invalid=471, Unknown=0, NotChecked=0, Total=650 [2018-01-24 20:31:57,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2018-01-24 20:31:57,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 209. [2018-01-24 20:31:57,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2018-01-24 20:31:57,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 260 transitions. [2018-01-24 20:31:57,766 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 260 transitions. Word has length 41 [2018-01-24 20:31:57,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:31:57,766 INFO L432 AbstractCegarLoop]: Abstraction has 209 states and 260 transitions. [2018-01-24 20:31:57,766 INFO L433 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-01-24 20:31:57,766 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 260 transitions. [2018-01-24 20:31:57,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-01-24 20:31:57,767 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:31:57,767 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, 1, 1, 1] [2018-01-24 20:31:57,767 INFO L371 AbstractCegarLoop]: === Iteration 16 === [mainErr51RequiresViolation, mainErr66EnsuresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, 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, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:31:57,767 INFO L82 PathProgramCache]: Analyzing trace with hash -310930527, now seen corresponding path program 1 times [2018-01-24 20:31:57,767 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:31:57,768 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:31:57,768 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:31:57,768 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:31:57,768 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:31:57,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:31:57,782 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:31:58,052 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 20:31:58,052 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:31:58,052 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-01-24 20:31:58,052 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:31:58,053 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-24 20:31:58,053 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-24 20:31:58,053 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-01-24 20:31:58,053 INFO L87 Difference]: Start difference. First operand 209 states and 260 transitions. Second operand 10 states. [2018-01-24 20:31:58,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:31:58,247 INFO L93 Difference]: Finished difference Result 239 states and 291 transitions. [2018-01-24 20:31:58,248 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-24 20:31:58,248 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 42 [2018-01-24 20:31:58,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:31:58,250 INFO L225 Difference]: With dead ends: 239 [2018-01-24 20:31:58,250 INFO L226 Difference]: Without dead ends: 236 [2018-01-24 20:31:58,250 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2018-01-24 20:31:58,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2018-01-24 20:31:58,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 209. [2018-01-24 20:31:58,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2018-01-24 20:31:58,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 259 transitions. [2018-01-24 20:31:58,263 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 259 transitions. Word has length 42 [2018-01-24 20:31:58,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:31:58,263 INFO L432 AbstractCegarLoop]: Abstraction has 209 states and 259 transitions. [2018-01-24 20:31:58,263 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-24 20:31:58,263 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 259 transitions. [2018-01-24 20:31:58,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-01-24 20:31:58,264 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:31:58,264 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, 1, 1, 1, 1] [2018-01-24 20:31:58,264 INFO L371 AbstractCegarLoop]: === Iteration 17 === [mainErr51RequiresViolation, mainErr66EnsuresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, 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, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:31:58,264 INFO L82 PathProgramCache]: Analyzing trace with hash -1048881672, now seen corresponding path program 1 times [2018-01-24 20:31:58,264 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:31:58,265 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:31:58,265 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:31:58,265 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:31:58,266 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:31:58,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:31:58,279 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:31:58,318 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-01-24 20:31:58,319 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:31:58,319 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 20:31:58,319 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:31:58,319 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 20:31:58,320 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 20:31:58,320 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 20:31:58,320 INFO L87 Difference]: Start difference. First operand 209 states and 259 transitions. Second operand 4 states. [2018-01-24 20:31:58,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:31:58,523 INFO L93 Difference]: Finished difference Result 270 states and 334 transitions. [2018-01-24 20:31:58,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 20:31:58,524 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2018-01-24 20:31:58,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:31:58,525 INFO L225 Difference]: With dead ends: 270 [2018-01-24 20:31:58,525 INFO L226 Difference]: Without dead ends: 265 [2018-01-24 20:31:58,526 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 20:31:58,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2018-01-24 20:31:58,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 213. [2018-01-24 20:31:58,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2018-01-24 20:31:58,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 270 transitions. [2018-01-24 20:31:58,538 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 270 transitions. Word has length 43 [2018-01-24 20:31:58,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:31:58,539 INFO L432 AbstractCegarLoop]: Abstraction has 213 states and 270 transitions. [2018-01-24 20:31:58,539 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 20:31:58,539 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 270 transitions. [2018-01-24 20:31:58,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-01-24 20:31:58,539 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:31:58,539 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, 1, 1, 1, 1] [2018-01-24 20:31:58,540 INFO L371 AbstractCegarLoop]: === Iteration 18 === [mainErr51RequiresViolation, mainErr66EnsuresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, 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, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:31:58,540 INFO L82 PathProgramCache]: Analyzing trace with hash -1048881671, now seen corresponding path program 1 times [2018-01-24 20:31:58,540 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:31:58,541 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:31:58,541 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:31:58,541 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:31:58,541 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:31:58,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:31:58,565 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:31:58,994 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 20:31:58,994 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:31:58,994 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-01-24 20:31:58,994 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:31:58,995 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-01-24 20:31:58,995 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-01-24 20:31:58,995 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2018-01-24 20:31:58,995 INFO L87 Difference]: Start difference. First operand 213 states and 270 transitions. Second operand 13 states. [2018-01-24 20:31:59,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:31:59,923 INFO L93 Difference]: Finished difference Result 271 states and 334 transitions. [2018-01-24 20:31:59,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-01-24 20:31:59,958 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 43 [2018-01-24 20:31:59,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:31:59,959 INFO L225 Difference]: With dead ends: 271 [2018-01-24 20:31:59,959 INFO L226 Difference]: Without dead ends: 269 [2018-01-24 20:31:59,959 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=179, Invalid=633, Unknown=0, NotChecked=0, Total=812 [2018-01-24 20:31:59,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2018-01-24 20:31:59,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 218. [2018-01-24 20:31:59,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2018-01-24 20:31:59,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 276 transitions. [2018-01-24 20:31:59,968 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 276 transitions. Word has length 43 [2018-01-24 20:31:59,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:31:59,968 INFO L432 AbstractCegarLoop]: Abstraction has 218 states and 276 transitions. [2018-01-24 20:31:59,968 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-01-24 20:31:59,968 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 276 transitions. [2018-01-24 20:31:59,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-01-24 20:31:59,968 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:31:59,968 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, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:31:59,968 INFO L371 AbstractCegarLoop]: === Iteration 19 === [mainErr51RequiresViolation, mainErr66EnsuresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, 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, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:31:59,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1204415842, now seen corresponding path program 1 times [2018-01-24 20:31:59,969 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:31:59,969 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:31:59,970 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:31:59,970 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:31:59,970 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:31:59,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:31:59,979 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:31:59,995 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-01-24 20:31:59,995 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:31:59,995 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 20:31:59,995 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:31:59,996 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-24 20:31:59,996 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-24 20:31:59,996 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-24 20:31:59,996 INFO L87 Difference]: Start difference. First operand 218 states and 276 transitions. Second operand 3 states. [2018-01-24 20:32:00,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:32:00,020 INFO L93 Difference]: Finished difference Result 238 states and 299 transitions. [2018-01-24 20:32:00,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-24 20:32:00,020 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2018-01-24 20:32:00,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:32:00,021 INFO L225 Difference]: With dead ends: 238 [2018-01-24 20:32:00,021 INFO L226 Difference]: Without dead ends: 219 [2018-01-24 20:32:00,021 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-24 20:32:00,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-01-24 20:32:00,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2018-01-24 20:32:00,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-01-24 20:32:00,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 277 transitions. [2018-01-24 20:32:00,029 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 277 transitions. Word has length 47 [2018-01-24 20:32:00,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:32:00,029 INFO L432 AbstractCegarLoop]: Abstraction has 219 states and 277 transitions. [2018-01-24 20:32:00,029 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-24 20:32:00,029 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 277 transitions. [2018-01-24 20:32:00,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-01-24 20:32:00,029 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:32:00,029 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:32:00,030 INFO L371 AbstractCegarLoop]: === Iteration 20 === [mainErr51RequiresViolation, mainErr66EnsuresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, 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, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:32:00,030 INFO L82 PathProgramCache]: Analyzing trace with hash 2091612127, now seen corresponding path program 1 times [2018-01-24 20:32:00,030 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:32:00,031 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:32:00,031 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:32:00,031 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:32:00,031 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:32:00,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:32:00,045 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:32:00,278 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 20:32:00,278 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:32:00,278 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-01-24 20:32:00,278 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:32:00,279 INFO L409 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-01-24 20:32:00,279 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-01-24 20:32:00,279 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2018-01-24 20:32:00,279 INFO L87 Difference]: Start difference. First operand 219 states and 277 transitions. Second operand 12 states. [2018-01-24 20:32:00,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:32:00,899 INFO L93 Difference]: Finished difference Result 290 states and 355 transitions. [2018-01-24 20:32:00,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-01-24 20:32:00,899 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 49 [2018-01-24 20:32:00,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:32:00,900 INFO L225 Difference]: With dead ends: 290 [2018-01-24 20:32:00,900 INFO L226 Difference]: Without dead ends: 289 [2018-01-24 20:32:00,900 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=182, Invalid=520, Unknown=0, NotChecked=0, Total=702 [2018-01-24 20:32:00,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2018-01-24 20:32:00,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 222. [2018-01-24 20:32:00,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2018-01-24 20:32:00,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 281 transitions. [2018-01-24 20:32:00,908 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 281 transitions. Word has length 49 [2018-01-24 20:32:00,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:32:00,908 INFO L432 AbstractCegarLoop]: Abstraction has 222 states and 281 transitions. [2018-01-24 20:32:00,908 INFO L433 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-01-24 20:32:00,908 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 281 transitions. [2018-01-24 20:32:00,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-01-24 20:32:00,909 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:32:00,909 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:32:00,909 INFO L371 AbstractCegarLoop]: === Iteration 21 === [mainErr51RequiresViolation, mainErr66EnsuresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, 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, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:32:00,909 INFO L82 PathProgramCache]: Analyzing trace with hash 2097549474, now seen corresponding path program 1 times [2018-01-24 20:32:00,909 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:32:00,910 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:32:00,910 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:32:00,910 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:32:00,910 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:32:00,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:32:00,926 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:32:01,449 WARN L146 SmtUtils]: Spent 158ms on a formula simplification. DAG size of input: 28 DAG size of output 27 [2018-01-24 20:32:01,899 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:32:01,899 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 20:32:01,899 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-24 20:32:01,900 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 50 with the following transitions: [2018-01-24 20:32:01,901 INFO L201 CegarAbsIntRunner]: [0], [4], [6], [9], [15], [17], [18], [19], [24], [26], [31], [32], [40], [41], [49], [50], [56], [57], [72], [73], [76], [78], [81], [88], [92], [94], [99], [198], [201], [202], [208], [214], [215], [216], [218], [219], [222], [231], [240], [248], [249], [253], [254], [255] [2018-01-24 20:32:01,950 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-24 20:32:01,950 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