java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf -i ../../../trunk/examples/svcomp/memsafety-ext/tree_stack_true-valid-memsafety_false-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 20:20:24,209 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 20:20:24,211 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 20:20:24,223 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 20:20:24,223 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 20:20:24,224 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 20:20:24,225 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 20:20:24,226 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 20:20:24,228 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 20:20:24,228 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 20:20:24,229 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 20:20:24,229 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 20:20:24,230 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 20:20:24,231 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 20:20:24,231 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 20:20:24,234 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 20:20:24,236 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 20:20:24,238 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 20:20:24,239 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 20:20:24,240 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 20:20:24,243 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-24 20:20:24,243 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-24 20:20:24,243 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-24 20:20:24,244 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-24 20:20:24,245 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-24 20:20:24,246 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-24 20:20:24,246 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-24 20:20:24,247 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-24 20:20:24,247 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-24 20:20:24,247 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 20:20:24,248 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 20:20:24,248 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 20:20:24,258 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 20:20:24,258 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 20:20:24,259 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 20:20:24,259 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 20:20:24,260 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 20:20:24,260 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-24 20:20:24,260 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 20:20:24,260 INFO L133 SettingsManager]: * Precise comparison operator=true [2018-01-24 20:20:24,260 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 20:20:24,261 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 20:20:24,261 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 20:20:24,261 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 20:20:24,262 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 20:20:24,262 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 20:20:24,262 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 20:20:24,262 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 20:20:24,262 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 20:20:24,263 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 20:20:24,263 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 20:20:24,263 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 20:20:24,263 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 20:20:24,263 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 20:20:24,264 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 20:20:24,264 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 20:20:24,264 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 20:20:24,264 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 20:20:24,264 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 20:20:24,265 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 20:20:24,265 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 20:20:24,265 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 20:20:24,265 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-24 20:20:24,265 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 20:20:24,266 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 20:20:24,266 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 20:20:24,266 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-24 20:20:24,267 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 20:20:24,267 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 20:20:24,301 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 20:20:24,314 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 20:20:24,318 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 20:20:24,319 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 20:20:24,320 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 20:20:24,320 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/memsafety-ext/tree_stack_true-valid-memsafety_false-termination.i [2018-01-24 20:20:24,494 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 20:20:24,498 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 20:20:24,499 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 20:20:24,499 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 20:20:24,504 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 20:20:24,505 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 08:20:24" (1/1) ... [2018-01-24 20:20:24,507 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fb77e6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:20:24, skipping insertion in model container [2018-01-24 20:20:24,507 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 08:20:24" (1/1) ... [2018-01-24 20:20:24,525 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 20:20:24,565 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 20:20:24,681 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 20:20:24,701 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 20:20:24,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:20:24 WrapperNode [2018-01-24 20:20:24,708 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 20:20:24,708 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 20:20:24,708 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 20:20:24,708 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 20:20:24,720 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:20:24" (1/1) ... [2018-01-24 20:20:24,720 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:20:24" (1/1) ... [2018-01-24 20:20:24,732 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:20:24" (1/1) ... [2018-01-24 20:20:24,732 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:20:24" (1/1) ... [2018-01-24 20:20:24,738 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:20:24" (1/1) ... [2018-01-24 20:20:24,741 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:20:24" (1/1) ... [2018-01-24 20:20:24,743 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:20:24" (1/1) ... [2018-01-24 20:20:24,744 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 20:20:24,745 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 20:20:24,745 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 20:20:24,745 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 20:20:24,746 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:20:24" (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 20:20:24,797 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 20:20:24,797 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 20:20:24,797 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 20:20:24,797 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-24 20:20:24,797 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-24 20:20:24,797 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 20:20:24,798 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 20:20:24,798 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 20:20:24,798 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 20:20:24,798 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-24 20:20:24,798 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-24 20:20:24,798 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 20:20:24,798 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 20:20:24,798 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 20:20:25,297 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 20:20:25,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 08:20:25 BoogieIcfgContainer [2018-01-24 20:20:25,298 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 20:20:25,299 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-24 20:20:25,299 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-24 20:20:25,301 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-24 20:20:25,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.01 08:20:24" (1/3) ... [2018-01-24 20:20:25,302 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cd8d6fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 08:20:25, skipping insertion in model container [2018-01-24 20:20:25,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:20:24" (2/3) ... [2018-01-24 20:20:25,303 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cd8d6fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 08:20:25, skipping insertion in model container [2018-01-24 20:20:25,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 08:20:25" (3/3) ... [2018-01-24 20:20:25,305 INFO L105 eAbstractionObserver]: Analyzing ICFG tree_stack_true-valid-memsafety_false-termination.i [2018-01-24 20:20:25,313 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-24 20:20:25,320 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 65 error locations. [2018-01-24 20:20:25,371 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-24 20:20:25,372 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-24 20:20:25,372 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-24 20:20:25,372 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-24 20:20:25,372 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-24 20:20:25,372 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-24 20:20:25,373 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-24 20:20:25,373 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-24 20:20:25,374 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-24 20:20:25,399 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states. [2018-01-24 20:20:25,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-24 20:20:25,406 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:20:25,407 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:20:25,407 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:20:25,413 INFO L82 PathProgramCache]: Analyzing trace with hash -1338247859, now seen corresponding path program 1 times [2018-01-24 20:20:25,416 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:20:25,465 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:20:25,466 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:20:25,466 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:20:25,466 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:20:25,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:20:25,515 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:20:25,593 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 20:20:25,595 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:20:25,595 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 20:20:25,596 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:20:25,599 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 20:20:25,613 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 20:20:25,613 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 20:20:25,616 INFO L87 Difference]: Start difference. First operand 147 states. Second operand 4 states. [2018-01-24 20:20:25,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:20:25,921 INFO L93 Difference]: Finished difference Result 298 states and 326 transitions. [2018-01-24 20:20:25,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 20:20:25,922 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-24 20:20:25,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:20:25,931 INFO L225 Difference]: With dead ends: 298 [2018-01-24 20:20:25,931 INFO L226 Difference]: Without dead ends: 158 [2018-01-24 20:20:25,934 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 20:20:25,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2018-01-24 20:20:25,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 142. [2018-01-24 20:20:25,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2018-01-24 20:20:25,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 152 transitions. [2018-01-24 20:20:25,969 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 152 transitions. Word has length 8 [2018-01-24 20:20:25,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:20:25,969 INFO L432 AbstractCegarLoop]: Abstraction has 142 states and 152 transitions. [2018-01-24 20:20:25,969 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 20:20:25,969 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 152 transitions. [2018-01-24 20:20:25,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-24 20:20:25,970 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:20:25,970 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:20:25,970 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:20:25,970 INFO L82 PathProgramCache]: Analyzing trace with hash -1338247858, now seen corresponding path program 1 times [2018-01-24 20:20:25,970 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:20:25,971 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:20:25,971 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:20:25,971 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:20:25,972 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:20:25,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:20:25,993 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:20:26,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:20:26,047 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:20:26,047 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 20:20:26,048 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:20:26,049 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 20:20:26,050 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 20:20:26,050 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 20:20:26,050 INFO L87 Difference]: Start difference. First operand 142 states and 152 transitions. Second operand 4 states. [2018-01-24 20:20:26,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:20:26,350 INFO L93 Difference]: Finished difference Result 142 states and 152 transitions. [2018-01-24 20:20:26,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 20:20:26,350 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-24 20:20:26,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:20:26,352 INFO L225 Difference]: With dead ends: 142 [2018-01-24 20:20:26,353 INFO L226 Difference]: Without dead ends: 140 [2018-01-24 20:20:26,354 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 20:20:26,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2018-01-24 20:20:26,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2018-01-24 20:20:26,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2018-01-24 20:20:26,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 150 transitions. [2018-01-24 20:20:26,365 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 150 transitions. Word has length 8 [2018-01-24 20:20:26,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:20:26,365 INFO L432 AbstractCegarLoop]: Abstraction has 140 states and 150 transitions. [2018-01-24 20:20:26,365 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 20:20:26,365 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 150 transitions. [2018-01-24 20:20:26,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-01-24 20:20:26,366 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:20:26,366 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:20:26,366 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:20:26,367 INFO L82 PathProgramCache]: Analyzing trace with hash 1963213562, now seen corresponding path program 1 times [2018-01-24 20:20:26,367 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:20:26,368 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:20:26,368 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:20:26,369 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:20:26,369 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:20:26,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:20:26,384 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:20:26,412 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 20:20:26,412 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:20:26,412 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 20:20:26,413 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:20:26,413 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 20:20:26,413 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 20:20:26,413 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 20:20:26,413 INFO L87 Difference]: Start difference. First operand 140 states and 150 transitions. Second operand 4 states. [2018-01-24 20:20:26,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:20:26,528 INFO L93 Difference]: Finished difference Result 164 states and 175 transitions. [2018-01-24 20:20:26,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 20:20:26,528 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-01-24 20:20:26,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:20:26,529 INFO L225 Difference]: With dead ends: 164 [2018-01-24 20:20:26,530 INFO L226 Difference]: Without dead ends: 148 [2018-01-24 20:20:26,530 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 20:20:26,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2018-01-24 20:20:26,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 127. [2018-01-24 20:20:26,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-01-24 20:20:26,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 138 transitions. [2018-01-24 20:20:26,541 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 138 transitions. Word has length 14 [2018-01-24 20:20:26,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:20:26,542 INFO L432 AbstractCegarLoop]: Abstraction has 127 states and 138 transitions. [2018-01-24 20:20:26,542 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 20:20:26,542 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 138 transitions. [2018-01-24 20:20:26,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-01-24 20:20:26,543 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:20:26,543 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:20:26,543 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:20:26,543 INFO L82 PathProgramCache]: Analyzing trace with hash 1963213563, now seen corresponding path program 1 times [2018-01-24 20:20:26,544 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:20:26,545 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:20:26,545 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:20:26,545 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:20:26,545 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:20:26,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:20:26,560 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:20:26,627 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 20:20:26,628 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:20:26,628 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 20:20:26,628 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:20:26,628 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 20:20:26,628 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 20:20:26,629 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:20:26,629 INFO L87 Difference]: Start difference. First operand 127 states and 138 transitions. Second operand 5 states. [2018-01-24 20:20:26,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:20:26,821 INFO L93 Difference]: Finished difference Result 185 states and 203 transitions. [2018-01-24 20:20:26,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 20:20:26,866 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-01-24 20:20:26,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:20:26,869 INFO L225 Difference]: With dead ends: 185 [2018-01-24 20:20:26,869 INFO L226 Difference]: Without dead ends: 173 [2018-01-24 20:20:26,870 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-24 20:20:26,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2018-01-24 20:20:26,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 157. [2018-01-24 20:20:26,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-01-24 20:20:26,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 180 transitions. [2018-01-24 20:20:26,880 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 180 transitions. Word has length 14 [2018-01-24 20:20:26,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:20:26,884 INFO L432 AbstractCegarLoop]: Abstraction has 157 states and 180 transitions. [2018-01-24 20:20:26,884 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 20:20:26,884 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 180 transitions. [2018-01-24 20:20:26,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-01-24 20:20:26,885 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:20:26,885 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:20:26,885 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:20:26,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1159097560, now seen corresponding path program 1 times [2018-01-24 20:20:26,885 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:20:26,886 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:20:26,886 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:20:26,886 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:20:26,886 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:20:26,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:20:26,900 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:20:26,925 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 20:20:26,926 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:20:26,926 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 20:20:26,926 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:20:26,927 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 20:20:26,927 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 20:20:26,927 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 20:20:26,927 INFO L87 Difference]: Start difference. First operand 157 states and 180 transitions. Second operand 4 states. [2018-01-24 20:20:27,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:20:27,022 INFO L93 Difference]: Finished difference Result 173 states and 196 transitions. [2018-01-24 20:20:27,022 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 20:20:27,022 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2018-01-24 20:20:27,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:20:27,024 INFO L225 Difference]: With dead ends: 173 [2018-01-24 20:20:27,024 INFO L226 Difference]: Without dead ends: 170 [2018-01-24 20:20:27,024 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 20:20:27,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2018-01-24 20:20:27,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 158. [2018-01-24 20:20:27,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2018-01-24 20:20:27,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 183 transitions. [2018-01-24 20:20:27,035 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 183 transitions. Word has length 16 [2018-01-24 20:20:27,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:20:27,036 INFO L432 AbstractCegarLoop]: Abstraction has 158 states and 183 transitions. [2018-01-24 20:20:27,036 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 20:20:27,036 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 183 transitions. [2018-01-24 20:20:27,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-01-24 20:20:27,037 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:20:27,037 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:20:27,037 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:20:27,037 INFO L82 PathProgramCache]: Analyzing trace with hash 1159097561, now seen corresponding path program 1 times [2018-01-24 20:20:27,037 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:20:27,038 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:20:27,038 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:20:27,038 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:20:27,038 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:20:27,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:20:27,051 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:20:27,122 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 20:20:27,122 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:20:27,122 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 20:20:27,122 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:20:27,123 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 20:20:27,123 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 20:20:27,123 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 20:20:27,123 INFO L87 Difference]: Start difference. First operand 158 states and 183 transitions. Second operand 4 states. [2018-01-24 20:20:27,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:20:27,223 INFO L93 Difference]: Finished difference Result 163 states and 186 transitions. [2018-01-24 20:20:27,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 20:20:27,224 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2018-01-24 20:20:27,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:20:27,224 INFO L225 Difference]: With dead ends: 163 [2018-01-24 20:20:27,225 INFO L226 Difference]: Without dead ends: 160 [2018-01-24 20:20:27,225 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 20:20:27,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2018-01-24 20:20:27,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 156. [2018-01-24 20:20:27,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2018-01-24 20:20:27,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 180 transitions. [2018-01-24 20:20:27,233 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 180 transitions. Word has length 16 [2018-01-24 20:20:27,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:20:27,234 INFO L432 AbstractCegarLoop]: Abstraction has 156 states and 180 transitions. [2018-01-24 20:20:27,234 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 20:20:27,234 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 180 transitions. [2018-01-24 20:20:27,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-01-24 20:20:27,235 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:20:27,235 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 20:20:27,235 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:20:27,236 INFO L82 PathProgramCache]: Analyzing trace with hash 990226269, now seen corresponding path program 1 times [2018-01-24 20:20:27,236 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:20:27,237 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:20:27,237 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:20:27,237 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:20:27,237 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:20:27,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:20:27,249 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:20:27,278 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 20:20:27,278 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:20:27,278 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 20:20:27,279 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:20:27,279 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 20:20:27,279 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 20:20:27,279 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 20:20:27,280 INFO L87 Difference]: Start difference. First operand 156 states and 180 transitions. Second operand 4 states. [2018-01-24 20:20:27,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:20:27,307 INFO L93 Difference]: Finished difference Result 160 states and 183 transitions. [2018-01-24 20:20:27,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 20:20:27,307 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2018-01-24 20:20:27,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:20:27,309 INFO L225 Difference]: With dead ends: 160 [2018-01-24 20:20:27,309 INFO L226 Difference]: Without dead ends: 157 [2018-01-24 20:20:27,309 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:20:27,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-01-24 20:20:27,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 156. [2018-01-24 20:20:27,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2018-01-24 20:20:27,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 179 transitions. [2018-01-24 20:20:27,317 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 179 transitions. Word has length 21 [2018-01-24 20:20:27,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:20:27,318 INFO L432 AbstractCegarLoop]: Abstraction has 156 states and 179 transitions. [2018-01-24 20:20:27,318 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 20:20:27,318 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 179 transitions. [2018-01-24 20:20:27,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-24 20:20:27,319 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:20:27,319 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 20:20:27,319 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:20:27,319 INFO L82 PathProgramCache]: Analyzing trace with hash 632244512, now seen corresponding path program 1 times [2018-01-24 20:20:27,319 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:20:27,320 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:20:27,320 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:20:27,320 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:20:27,320 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:20:27,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:20:27,336 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:20:27,389 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 20:20:27,389 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:20:27,389 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 20:20:27,389 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:20:27,390 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 20:20:27,390 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 20:20:27,390 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:20:27,390 INFO L87 Difference]: Start difference. First operand 156 states and 179 transitions. Second operand 5 states. [2018-01-24 20:20:27,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:20:27,537 INFO L93 Difference]: Finished difference Result 175 states and 200 transitions. [2018-01-24 20:20:27,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 20:20:27,538 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2018-01-24 20:20:27,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:20:27,539 INFO L225 Difference]: With dead ends: 175 [2018-01-24 20:20:27,539 INFO L226 Difference]: Without dead ends: 171 [2018-01-24 20:20:27,539 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 20:20:27,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-01-24 20:20:27,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 155. [2018-01-24 20:20:27,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-01-24 20:20:27,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 179 transitions. [2018-01-24 20:20:27,544 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 179 transitions. Word has length 22 [2018-01-24 20:20:27,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:20:27,545 INFO L432 AbstractCegarLoop]: Abstraction has 155 states and 179 transitions. [2018-01-24 20:20:27,545 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 20:20:27,545 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 179 transitions. [2018-01-24 20:20:27,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-24 20:20:27,545 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:20:27,546 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 20:20:27,546 INFO L371 AbstractCegarLoop]: === Iteration 9 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:20:27,546 INFO L82 PathProgramCache]: Analyzing trace with hash 632244513, now seen corresponding path program 1 times [2018-01-24 20:20:27,546 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:20:27,547 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:20:27,547 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:20:27,547 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:20:27,547 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:20:27,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:20:27,559 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:20:27,610 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 20:20:27,610 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:20:27,610 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 20:20:27,610 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:20:27,611 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 20:20:27,611 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 20:20:27,611 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:20:27,611 INFO L87 Difference]: Start difference. First operand 155 states and 179 transitions. Second operand 5 states. [2018-01-24 20:20:27,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:20:27,816 INFO L93 Difference]: Finished difference Result 177 states and 202 transitions. [2018-01-24 20:20:27,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 20:20:27,817 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2018-01-24 20:20:27,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:20:27,817 INFO L225 Difference]: With dead ends: 177 [2018-01-24 20:20:27,818 INFO L226 Difference]: Without dead ends: 175 [2018-01-24 20:20:27,818 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-24 20:20:27,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-01-24 20:20:27,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 157. [2018-01-24 20:20:27,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-01-24 20:20:27,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 180 transitions. [2018-01-24 20:20:27,824 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 180 transitions. Word has length 22 [2018-01-24 20:20:27,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:20:27,825 INFO L432 AbstractCegarLoop]: Abstraction has 157 states and 180 transitions. [2018-01-24 20:20:27,825 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 20:20:27,825 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 180 transitions. [2018-01-24 20:20:27,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-24 20:20:27,825 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:20:27,826 INFO L322 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:20:27,826 INFO L371 AbstractCegarLoop]: === Iteration 10 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:20:27,826 INFO L82 PathProgramCache]: Analyzing trace with hash -733762389, now seen corresponding path program 1 times [2018-01-24 20:20:27,826 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:20:27,827 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:20:27,827 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:20:27,827 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:20:27,827 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:20:27,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:20:27,836 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:20:27,848 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:20:27,848 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:20:27,848 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 20:20:27,848 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:20:27,849 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-24 20:20:27,849 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-24 20:20:27,849 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-24 20:20:27,849 INFO L87 Difference]: Start difference. First operand 157 states and 180 transitions. Second operand 3 states. [2018-01-24 20:20:27,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:20:27,858 INFO L93 Difference]: Finished difference Result 307 states and 355 transitions. [2018-01-24 20:20:27,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-24 20:20:27,858 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2018-01-24 20:20:27,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:20:27,859 INFO L225 Difference]: With dead ends: 307 [2018-01-24 20:20:27,859 INFO L226 Difference]: Without dead ends: 159 [2018-01-24 20:20:27,860 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 20:20:27,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-01-24 20:20:27,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2018-01-24 20:20:27,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-01-24 20:20:27,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 182 transitions. [2018-01-24 20:20:27,867 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 182 transitions. Word has length 22 [2018-01-24 20:20:27,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:20:27,867 INFO L432 AbstractCegarLoop]: Abstraction has 159 states and 182 transitions. [2018-01-24 20:20:27,867 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-24 20:20:27,867 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 182 transitions. [2018-01-24 20:20:27,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-01-24 20:20:27,868 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:20:27,868 INFO L322 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:20:27,868 INFO L371 AbstractCegarLoop]: === Iteration 11 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:20:27,868 INFO L82 PathProgramCache]: Analyzing trace with hash -1797349272, now seen corresponding path program 1 times [2018-01-24 20:20:27,868 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:20:27,869 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:20:27,869 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:20:27,869 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:20:27,869 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:20:27,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:20:27,883 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:20:28,022 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:20:28,023 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:20:28,023 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-24 20:20:28,023 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:20:28,023 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-24 20:20:28,024 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-24 20:20:28,024 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-24 20:20:28,024 INFO L87 Difference]: Start difference. First operand 159 states and 182 transitions. Second operand 6 states. [2018-01-24 20:20:28,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:20:28,332 INFO L93 Difference]: Finished difference Result 352 states and 406 transitions. [2018-01-24 20:20:28,333 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-24 20:20:28,333 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2018-01-24 20:20:28,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:20:28,334 INFO L225 Difference]: With dead ends: 352 [2018-01-24 20:20:28,334 INFO L226 Difference]: Without dead ends: 202 [2018-01-24 20:20:28,335 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-01-24 20:20:28,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2018-01-24 20:20:28,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 175. [2018-01-24 20:20:28,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-01-24 20:20:28,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 203 transitions. [2018-01-24 20:20:28,343 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 203 transitions. Word has length 24 [2018-01-24 20:20:28,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:20:28,344 INFO L432 AbstractCegarLoop]: Abstraction has 175 states and 203 transitions. [2018-01-24 20:20:28,344 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-24 20:20:28,344 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 203 transitions. [2018-01-24 20:20:28,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-24 20:20:28,344 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:20:28,345 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:20:28,345 INFO L371 AbstractCegarLoop]: === Iteration 12 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:20:28,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1764795143, now seen corresponding path program 1 times [2018-01-24 20:20:28,345 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:20:28,346 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:20:28,346 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:20:28,346 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:20:28,346 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:20:28,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:20:28,361 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:20:28,718 WARN L146 SmtUtils]: Spent 107ms on a formula simplification. DAG size of input: 24 DAG size of output 16 [2018-01-24 20:20:29,044 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 20:20:29,044 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:20:29,044 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-01-24 20:20:29,044 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:20:29,045 INFO L409 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-01-24 20:20:29,045 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-01-24 20:20:29,045 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2018-01-24 20:20:29,046 INFO L87 Difference]: Start difference. First operand 175 states and 203 transitions. Second operand 12 states. [2018-01-24 20:20:29,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:20:29,700 INFO L93 Difference]: Finished difference Result 192 states and 223 transitions. [2018-01-24 20:20:29,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-24 20:20:29,700 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 25 [2018-01-24 20:20:29,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:20:29,701 INFO L225 Difference]: With dead ends: 192 [2018-01-24 20:20:29,702 INFO L226 Difference]: Without dead ends: 191 [2018-01-24 20:20:29,702 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=144, Invalid=408, Unknown=0, NotChecked=0, Total=552 [2018-01-24 20:20:29,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-01-24 20:20:29,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 176. [2018-01-24 20:20:29,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2018-01-24 20:20:29,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 205 transitions. [2018-01-24 20:20:29,711 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 205 transitions. Word has length 25 [2018-01-24 20:20:29,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:20:29,712 INFO L432 AbstractCegarLoop]: Abstraction has 176 states and 205 transitions. [2018-01-24 20:20:29,712 INFO L433 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-01-24 20:20:29,712 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 205 transitions. [2018-01-24 20:20:29,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-24 20:20:29,713 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:20:29,713 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:20:29,713 INFO L371 AbstractCegarLoop]: === Iteration 13 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:20:29,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1764795144, now seen corresponding path program 1 times [2018-01-24 20:20:29,713 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:20:29,714 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:20:29,714 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:20:29,714 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:20:29,714 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:20:29,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:20:29,729 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:20:30,016 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 20:20:30,016 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:20:30,016 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-01-24 20:20:30,016 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:20:30,017 INFO L409 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-01-24 20:20:30,017 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-01-24 20:20:30,017 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2018-01-24 20:20:30,017 INFO L87 Difference]: Start difference. First operand 176 states and 205 transitions. Second operand 11 states. [2018-01-24 20:20:30,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:20:30,536 INFO L93 Difference]: Finished difference Result 245 states and 274 transitions. [2018-01-24 20:20:30,536 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-24 20:20:30,536 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2018-01-24 20:20:30,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:20:30,537 INFO L225 Difference]: With dead ends: 245 [2018-01-24 20:20:30,538 INFO L226 Difference]: Without dead ends: 240 [2018-01-24 20:20:30,538 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=138, Invalid=368, Unknown=0, NotChecked=0, Total=506 [2018-01-24 20:20:30,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2018-01-24 20:20:30,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 192. [2018-01-24 20:20:30,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2018-01-24 20:20:30,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 228 transitions. [2018-01-24 20:20:30,544 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 228 transitions. Word has length 25 [2018-01-24 20:20:30,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:20:30,545 INFO L432 AbstractCegarLoop]: Abstraction has 192 states and 228 transitions. [2018-01-24 20:20:30,545 INFO L433 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-01-24 20:20:30,545 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 228 transitions. [2018-01-24 20:20:30,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-24 20:20:30,546 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:20:30,546 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:20:30,546 INFO L371 AbstractCegarLoop]: === Iteration 14 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:20:30,546 INFO L82 PathProgramCache]: Analyzing trace with hash 2572345, now seen corresponding path program 1 times [2018-01-24 20:20:30,546 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:20:30,547 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:20:30,547 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:20:30,547 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:20:30,547 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:20:30,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:20:30,556 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:20:30,627 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 20:20:30,628 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:20:30,628 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 20:20:30,628 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:20:30,628 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 20:20:30,628 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 20:20:30,628 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:20:30,629 INFO L87 Difference]: Start difference. First operand 192 states and 228 transitions. Second operand 5 states. [2018-01-24 20:20:30,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:20:30,841 INFO L93 Difference]: Finished difference Result 277 states and 330 transitions. [2018-01-24 20:20:30,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 20:20:30,842 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2018-01-24 20:20:30,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:20:30,844 INFO L225 Difference]: With dead ends: 277 [2018-01-24 20:20:30,844 INFO L226 Difference]: Without dead ends: 276 [2018-01-24 20:20:30,844 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-24 20:20:30,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2018-01-24 20:20:30,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 191. [2018-01-24 20:20:30,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-01-24 20:20:30,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 226 transitions. [2018-01-24 20:20:30,855 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 226 transitions. Word has length 25 [2018-01-24 20:20:30,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:20:30,855 INFO L432 AbstractCegarLoop]: Abstraction has 191 states and 226 transitions. [2018-01-24 20:20:30,856 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 20:20:30,856 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 226 transitions. [2018-01-24 20:20:30,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-24 20:20:30,857 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:20:30,857 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:20:30,857 INFO L371 AbstractCegarLoop]: === Iteration 15 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:20:30,857 INFO L82 PathProgramCache]: Analyzing trace with hash 2572346, now seen corresponding path program 1 times [2018-01-24 20:20:30,857 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:20:30,858 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:20:30,858 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:20:30,858 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:20:30,858 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:20:30,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:20:30,868 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:20:30,945 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 20:20:30,945 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:20:30,945 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 20:20:30,945 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:20:30,946 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 20:20:30,946 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 20:20:30,946 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:20:30,946 INFO L87 Difference]: Start difference. First operand 191 states and 226 transitions. Second operand 5 states. [2018-01-24 20:20:31,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:20:31,218 INFO L93 Difference]: Finished difference Result 337 states and 399 transitions. [2018-01-24 20:20:31,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 20:20:31,218 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2018-01-24 20:20:31,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:20:31,220 INFO L225 Difference]: With dead ends: 337 [2018-01-24 20:20:31,220 INFO L226 Difference]: Without dead ends: 336 [2018-01-24 20:20:31,220 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-24 20:20:31,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2018-01-24 20:20:31,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 190. [2018-01-24 20:20:31,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2018-01-24 20:20:31,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 224 transitions. [2018-01-24 20:20:31,228 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 224 transitions. Word has length 25 [2018-01-24 20:20:31,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:20:31,228 INFO L432 AbstractCegarLoop]: Abstraction has 190 states and 224 transitions. [2018-01-24 20:20:31,229 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 20:20:31,229 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 224 transitions. [2018-01-24 20:20:31,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-01-24 20:20:31,229 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:20:31,229 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:20:31,230 INFO L371 AbstractCegarLoop]: === Iteration 16 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:20:31,230 INFO L82 PathProgramCache]: Analyzing trace with hash -676623804, now seen corresponding path program 1 times [2018-01-24 20:20:31,230 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:20:31,231 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:20:31,231 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:20:31,231 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:20:31,231 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:20:31,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:20:31,241 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:20:31,314 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 20:20:31,314 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:20:31,314 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-24 20:20:31,314 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:20:31,315 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-24 20:20:31,315 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-24 20:20:31,315 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-01-24 20:20:31,315 INFO L87 Difference]: Start difference. First operand 190 states and 224 transitions. Second operand 9 states. [2018-01-24 20:20:31,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:20:31,785 INFO L93 Difference]: Finished difference Result 228 states and 270 transitions. [2018-01-24 20:20:31,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-24 20:20:31,785 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2018-01-24 20:20:31,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:20:31,786 INFO L225 Difference]: With dead ends: 228 [2018-01-24 20:20:31,786 INFO L226 Difference]: Without dead ends: 227 [2018-01-24 20:20:31,787 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2018-01-24 20:20:31,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-01-24 20:20:31,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 189. [2018-01-24 20:20:31,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-01-24 20:20:31,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 222 transitions. [2018-01-24 20:20:31,793 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 222 transitions. Word has length 28 [2018-01-24 20:20:31,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:20:31,793 INFO L432 AbstractCegarLoop]: Abstraction has 189 states and 222 transitions. [2018-01-24 20:20:31,793 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-24 20:20:31,793 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 222 transitions. [2018-01-24 20:20:31,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-01-24 20:20:31,794 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:20:31,794 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:20:31,794 INFO L371 AbstractCegarLoop]: === Iteration 17 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:20:31,795 INFO L82 PathProgramCache]: Analyzing trace with hash -676623803, now seen corresponding path program 1 times [2018-01-24 20:20:31,795 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:20:31,795 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:20:31,796 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:20:31,796 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:20:31,796 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:20:31,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:20:31,806 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:20:32,177 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 20:20:32,177 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:20:32,216 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-24 20:20:32,216 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:20:32,216 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-24 20:20:32,216 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-24 20:20:32,216 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-01-24 20:20:32,217 INFO L87 Difference]: Start difference. First operand 189 states and 222 transitions. Second operand 9 states. [2018-01-24 20:20:32,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:20:32,511 INFO L93 Difference]: Finished difference Result 227 states and 268 transitions. [2018-01-24 20:20:32,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-24 20:20:32,512 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2018-01-24 20:20:32,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:20:32,513 INFO L225 Difference]: With dead ends: 227 [2018-01-24 20:20:32,513 INFO L226 Difference]: Without dead ends: 226 [2018-01-24 20:20:32,514 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2018-01-24 20:20:32,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2018-01-24 20:20:32,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 188. [2018-01-24 20:20:32,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2018-01-24 20:20:32,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 220 transitions. [2018-01-24 20:20:32,523 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 220 transitions. Word has length 28 [2018-01-24 20:20:32,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:20:32,523 INFO L432 AbstractCegarLoop]: Abstraction has 188 states and 220 transitions. [2018-01-24 20:20:32,523 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-24 20:20:32,523 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 220 transitions. [2018-01-24 20:20:32,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-24 20:20:32,524 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:20:32,524 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:20:32,524 INFO L371 AbstractCegarLoop]: === Iteration 18 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:20:32,525 INFO L82 PathProgramCache]: Analyzing trace with hash 1254885066, now seen corresponding path program 1 times [2018-01-24 20:20:32,525 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:20:32,525 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:20:32,525 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:20:32,526 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:20:32,526 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:20:32,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:20:32,536 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:20:32,607 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 20:20:32,608 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:20:32,608 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 20:20:32,608 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:20:32,608 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 20:20:32,609 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 20:20:32,609 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 20:20:32,609 INFO L87 Difference]: Start difference. First operand 188 states and 220 transitions. Second operand 4 states. [2018-01-24 20:20:32,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:20:32,794 INFO L93 Difference]: Finished difference Result 245 states and 284 transitions. [2018-01-24 20:20:32,794 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 20:20:32,794 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2018-01-24 20:20:32,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:20:32,795 INFO L225 Difference]: With dead ends: 245 [2018-01-24 20:20:32,795 INFO L226 Difference]: Without dead ends: 243 [2018-01-24 20:20:32,796 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:20:32,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-01-24 20:20:32,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 186. [2018-01-24 20:20:32,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2018-01-24 20:20:32,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 216 transitions. [2018-01-24 20:20:32,804 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 216 transitions. Word has length 29 [2018-01-24 20:20:32,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:20:32,805 INFO L432 AbstractCegarLoop]: Abstraction has 186 states and 216 transitions. [2018-01-24 20:20:32,805 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 20:20:32,805 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 216 transitions. [2018-01-24 20:20:32,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-24 20:20:32,805 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:20:32,806 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:20:32,806 INFO L371 AbstractCegarLoop]: === Iteration 19 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:20:32,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1254885065, now seen corresponding path program 1 times [2018-01-24 20:20:32,807 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:20:32,808 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:20:32,808 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:20:32,808 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:20:32,808 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:20:32,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:20:32,821 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:20:32,849 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 20:20:32,849 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:20:32,850 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 20:20:32,850 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:20:32,850 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 20:20:32,850 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 20:20:32,850 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 20:20:32,851 INFO L87 Difference]: Start difference. First operand 186 states and 216 transitions. Second operand 4 states. [2018-01-24 20:20:32,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:20:32,951 INFO L93 Difference]: Finished difference Result 213 states and 248 transitions. [2018-01-24 20:20:32,952 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 20:20:32,952 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2018-01-24 20:20:32,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:20:32,953 INFO L225 Difference]: With dead ends: 213 [2018-01-24 20:20:32,953 INFO L226 Difference]: Without dead ends: 212 [2018-01-24 20:20:32,953 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 20:20:32,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2018-01-24 20:20:32,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 185. [2018-01-24 20:20:32,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-01-24 20:20:32,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 214 transitions. [2018-01-24 20:20:32,959 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 214 transitions. Word has length 29 [2018-01-24 20:20:32,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:20:32,959 INFO L432 AbstractCegarLoop]: Abstraction has 185 states and 214 transitions. [2018-01-24 20:20:32,959 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 20:20:32,959 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 214 transitions. [2018-01-24 20:20:32,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-24 20:20:32,960 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:20:32,960 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:20:32,960 INFO L371 AbstractCegarLoop]: === Iteration 20 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:20:32,960 INFO L82 PathProgramCache]: Analyzing trace with hash 570395414, now seen corresponding path program 1 times [2018-01-24 20:20:32,960 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:20:32,961 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:20:32,961 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:20:32,961 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:20:32,961 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:20:32,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:20:32,967 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:20:32,998 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 20:20:32,998 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:20:32,998 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 20:20:32,998 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:20:32,998 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 20:20:32,999 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 20:20:32,999 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:20:32,999 INFO L87 Difference]: Start difference. First operand 185 states and 214 transitions. Second operand 5 states. [2018-01-24 20:20:33,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:20:33,319 INFO L93 Difference]: Finished difference Result 268 states and 312 transitions. [2018-01-24 20:20:33,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 20:20:33,320 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2018-01-24 20:20:33,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:20:33,321 INFO L225 Difference]: With dead ends: 268 [2018-01-24 20:20:33,321 INFO L226 Difference]: Without dead ends: 267 [2018-01-24 20:20:33,321 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-24 20:20:33,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2018-01-24 20:20:33,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 184. [2018-01-24 20:20:33,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2018-01-24 20:20:33,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 212 transitions. [2018-01-24 20:20:33,327 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 212 transitions. Word has length 29 [2018-01-24 20:20:33,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:20:33,327 INFO L432 AbstractCegarLoop]: Abstraction has 184 states and 212 transitions. [2018-01-24 20:20:33,327 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 20:20:33,327 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 212 transitions. [2018-01-24 20:20:33,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-24 20:20:33,328 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:20:33,328 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:20:33,328 INFO L371 AbstractCegarLoop]: === Iteration 21 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:20:33,328 INFO L82 PathProgramCache]: Analyzing trace with hash 570395415, now seen corresponding path program 1 times [2018-01-24 20:20:33,328 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:20:33,329 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:20:33,329 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:20:33,329 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:20:33,329 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:20:33,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:20:33,336 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:20:33,408 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 20:20:33,408 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:20:33,409 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 20:20:33,409 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:20:33,409 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 20:20:33,409 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 20:20:33,409 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:20:33,410 INFO L87 Difference]: Start difference. First operand 184 states and 212 transitions. Second operand 5 states. [2018-01-24 20:20:33,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:20:33,672 INFO L93 Difference]: Finished difference Result 325 states and 375 transitions. [2018-01-24 20:20:33,673 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 20:20:33,673 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2018-01-24 20:20:33,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:20:33,674 INFO L225 Difference]: With dead ends: 325 [2018-01-24 20:20:33,674 INFO L226 Difference]: Without dead ends: 324 [2018-01-24 20:20:33,674 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-24 20:20:33,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2018-01-24 20:20:33,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 183. [2018-01-24 20:20:33,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-01-24 20:20:33,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 210 transitions. [2018-01-24 20:20:33,681 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 210 transitions. Word has length 29 [2018-01-24 20:20:33,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:20:33,681 INFO L432 AbstractCegarLoop]: Abstraction has 183 states and 210 transitions. [2018-01-24 20:20:33,681 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 20:20:33,681 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 210 transitions. [2018-01-24 20:20:33,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-01-24 20:20:33,682 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:20:33,682 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:20:33,682 INFO L371 AbstractCegarLoop]: === Iteration 22 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:20:33,682 INFO L82 PathProgramCache]: Analyzing trace with hash -526012245, now seen corresponding path program 1 times [2018-01-24 20:20:33,682 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:20:33,683 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:20:33,683 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:20:33,683 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:20:33,683 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:20:33,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:20:33,691 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:20:33,719 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 20:20:33,719 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:20:33,719 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 20:20:33,719 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:20:33,720 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 20:20:33,720 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 20:20:33,720 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 20:20:33,720 INFO L87 Difference]: Start difference. First operand 183 states and 210 transitions. Second operand 4 states. [2018-01-24 20:20:33,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:20:33,836 INFO L93 Difference]: Finished difference Result 198 states and 227 transitions. [2018-01-24 20:20:33,839 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 20:20:33,839 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2018-01-24 20:20:33,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:20:33,840 INFO L225 Difference]: With dead ends: 198 [2018-01-24 20:20:33,841 INFO L226 Difference]: Without dead ends: 197 [2018-01-24 20:20:33,841 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 20:20:33,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2018-01-24 20:20:33,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 182. [2018-01-24 20:20:33,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2018-01-24 20:20:33,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 208 transitions. [2018-01-24 20:20:33,850 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 208 transitions. Word has length 31 [2018-01-24 20:20:33,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:20:33,850 INFO L432 AbstractCegarLoop]: Abstraction has 182 states and 208 transitions. [2018-01-24 20:20:33,850 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 20:20:33,850 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 208 transitions. [2018-01-24 20:20:33,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-01-24 20:20:33,851 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:20:33,851 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:20:33,851 INFO L371 AbstractCegarLoop]: === Iteration 23 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:20:33,851 INFO L82 PathProgramCache]: Analyzing trace with hash -526012244, now seen corresponding path program 1 times [2018-01-24 20:20:33,851 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:20:33,852 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:20:33,852 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:20:33,852 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:20:33,853 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:20:33,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:20:33,863 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:20:33,910 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 20:20:33,910 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:20:33,910 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 20:20:33,910 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:20:33,911 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 20:20:33,911 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 20:20:33,911 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 20:20:33,911 INFO L87 Difference]: Start difference. First operand 182 states and 208 transitions. Second operand 4 states. [2018-01-24 20:20:34,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:20:34,020 INFO L93 Difference]: Finished difference Result 222 states and 250 transitions. [2018-01-24 20:20:34,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 20:20:34,021 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2018-01-24 20:20:34,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:20:34,022 INFO L225 Difference]: With dead ends: 222 [2018-01-24 20:20:34,022 INFO L226 Difference]: Without dead ends: 220 [2018-01-24 20:20:34,022 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:20:34,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2018-01-24 20:20:34,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 180. [2018-01-24 20:20:34,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2018-01-24 20:20:34,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 204 transitions. [2018-01-24 20:20:34,031 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 204 transitions. Word has length 31 [2018-01-24 20:20:34,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:20:34,031 INFO L432 AbstractCegarLoop]: Abstraction has 180 states and 204 transitions. [2018-01-24 20:20:34,031 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 20:20:34,031 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 204 transitions. [2018-01-24 20:20:34,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-01-24 20:20:34,032 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:20:34,032 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:20:34,032 INFO L371 AbstractCegarLoop]: === Iteration 24 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:20:34,032 INFO L82 PathProgramCache]: Analyzing trace with hash 886820396, now seen corresponding path program 1 times [2018-01-24 20:20:34,032 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:20:34,033 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:20:34,033 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:20:34,033 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:20:34,034 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:20:34,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:20:34,044 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:20:34,127 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:20:34,127 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 20:20:34,127 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-24 20:20:34,128 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 33 with the following transitions: [2018-01-24 20:20:34,130 INFO L201 CegarAbsIntRunner]: [0], [1], [5], [6], [7], [10], [16], [18], [21], [136], [137], [138], [139], [142], [148], [154], [155], [156], [158], [159], [162], [163], [166], [185], [187], [206], [208], [217], [218], [219] [2018-01-24 20:20:34,176 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-24 20:20:34,176 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