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_precise.epf -i ../../../trunk/examples/svcomp/memsafety-ext/tree_parent_ptr_true-valid-memsafety_false-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 23:43:39,192 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 23:43:39,194 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 23:43:39,210 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 23:43:39,210 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 23:43:39,211 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 23:43:39,213 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 23:43:39,214 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 23:43:39,216 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 23:43:39,217 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 23:43:39,218 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 23:43:39,218 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 23:43:39,219 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 23:43:39,221 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 23:43:39,221 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 23:43:39,224 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 23:43:39,226 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 23:43:39,228 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 23:43:39,229 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 23:43:39,231 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 23:43:39,233 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-24 23:43:39,233 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-24 23:43:39,233 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-24 23:43:39,235 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-24 23:43:39,235 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-24 23:43:39,237 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-24 23:43:39,237 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-24 23:43:39,237 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-24 23:43:39,238 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-24 23:43:39,238 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 23:43:39,239 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 23:43:39,239 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_precise.epf [2018-01-24 23:43:39,247 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 23:43:39,247 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 23:43:39,248 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 23:43:39,248 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 23:43:39,248 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 23:43:39,248 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-24 23:43:39,248 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 23:43:39,248 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 23:43:39,249 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 23:43:39,249 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 23:43:39,249 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 23:43:39,249 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 23:43:39,249 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 23:43:39,250 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 23:43:39,250 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 23:43:39,250 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 23:43:39,250 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 23:43:39,250 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 23:43:39,250 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 23:43:39,250 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 23:43:39,250 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 23:43:39,251 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 23:43:39,251 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 23:43:39,251 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 23:43:39,251 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 23:43:39,251 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 23:43:39,252 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 23:43:39,252 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 23:43:39,252 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 23:43:39,252 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-24 23:43:39,252 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 23:43:39,252 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 23:43:39,252 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 23:43:39,252 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-24 23:43:39,253 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 23:43:39,253 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 23:43:39,286 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 23:43:39,297 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 23:43:39,300 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 23:43:39,302 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 23:43:39,302 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 23:43:39,303 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/memsafety-ext/tree_parent_ptr_true-valid-memsafety_false-termination.i [2018-01-24 23:43:39,465 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 23:43:39,470 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 23:43:39,471 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 23:43:39,471 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 23:43:39,476 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 23:43:39,478 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 11:43:39" (1/1) ... [2018-01-24 23:43:39,480 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 11:43:39, skipping insertion in model container [2018-01-24 23:43:39,480 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 11:43:39" (1/1) ... [2018-01-24 23:43:39,494 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 23:43:39,534 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 23:43:39,658 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 23:43:39,679 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 23:43:39,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 11:43:39 WrapperNode [2018-01-24 23:43:39,690 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 23:43:39,691 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 23:43:39,691 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 23:43:39,692 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 23:43:39,706 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 11:43:39" (1/1) ... [2018-01-24 23:43:39,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 11:43:39" (1/1) ... [2018-01-24 23:43:39,716 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 11:43:39" (1/1) ... [2018-01-24 23:43:39,717 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 11:43:39" (1/1) ... [2018-01-24 23:43:39,723 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 11:43:39" (1/1) ... [2018-01-24 23:43:39,727 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 11:43:39" (1/1) ... [2018-01-24 23:43:39,728 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 11:43:39" (1/1) ... [2018-01-24 23:43:39,730 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 23:43:39,731 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 23:43:39,731 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 23:43:39,731 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 23:43:39,732 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 11:43:39" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 23:43:39,781 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 23:43:39,781 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 23:43:39,781 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 23:43:39,781 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-24 23:43:39,781 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-24 23:43:39,781 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 23:43:39,781 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 23:43:39,781 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 23:43:39,782 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 23:43:39,782 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-24 23:43:39,782 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-24 23:43:39,782 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 23:43:39,782 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 23:43:39,782 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 23:43:40,353 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 23:43:40,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 11:43:40 BoogieIcfgContainer [2018-01-24 23:43:40,354 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 23:43:40,355 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-24 23:43:40,356 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-24 23:43:40,357 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-24 23:43:40,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.01 11:43:39" (1/3) ... [2018-01-24 23:43:40,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@605fc78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 11:43:40, skipping insertion in model container [2018-01-24 23:43:40,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 11:43:39" (2/3) ... [2018-01-24 23:43:40,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@605fc78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 11:43:40, skipping insertion in model container [2018-01-24 23:43:40,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 11:43:40" (3/3) ... [2018-01-24 23:43:40,362 INFO L105 eAbstractionObserver]: Analyzing ICFG tree_parent_ptr_true-valid-memsafety_false-termination.i [2018-01-24 23:43:40,369 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-24 23:43:40,376 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 75 error locations. [2018-01-24 23:43:40,418 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-24 23:43:40,418 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-24 23:43:40,418 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-24 23:43:40,418 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-24 23:43:40,418 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-24 23:43:40,419 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-24 23:43:40,419 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-24 23:43:40,419 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-24 23:43:40,419 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-24 23:43:40,443 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states. [2018-01-24 23:43:40,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-24 23:43:40,449 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:43:40,450 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 23:43:40,450 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr74EnsuresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr72RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr73RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 23:43:40,454 INFO L82 PathProgramCache]: Analyzing trace with hash -1759036932, now seen corresponding path program 1 times [2018-01-24 23:43:40,456 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:43:40,497 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:43:40,498 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:43:40,498 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:43:40,498 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:43:40,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:43:40,538 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 23:43:40,606 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 23:43:40,608 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 23:43:40,609 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 23:43:40,609 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 23:43:40,612 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 23:43:40,623 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 23:43:40,623 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 23:43:40,625 INFO L87 Difference]: Start difference. First operand 164 states. Second operand 4 states. [2018-01-24 23:43:40,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 23:43:40,993 INFO L93 Difference]: Finished difference Result 329 states and 357 transitions. [2018-01-24 23:43:40,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 23:43:40,995 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-24 23:43:40,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 23:43:41,008 INFO L225 Difference]: With dead ends: 329 [2018-01-24 23:43:41,008 INFO L226 Difference]: Without dead ends: 174 [2018-01-24 23:43:41,011 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 23:43:41,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2018-01-24 23:43:41,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 158. [2018-01-24 23:43:41,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2018-01-24 23:43:41,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 168 transitions. [2018-01-24 23:43:41,048 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 168 transitions. Word has length 8 [2018-01-24 23:43:41,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 23:43:41,048 INFO L432 AbstractCegarLoop]: Abstraction has 158 states and 168 transitions. [2018-01-24 23:43:41,048 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 23:43:41,048 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 168 transitions. [2018-01-24 23:43:41,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-24 23:43:41,049 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:43:41,049 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 23:43:41,049 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr74EnsuresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr72RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr73RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 23:43:41,049 INFO L82 PathProgramCache]: Analyzing trace with hash -1759036931, now seen corresponding path program 1 times [2018-01-24 23:43:41,049 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:43:41,050 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:43:41,050 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:43:41,050 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:43:41,050 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:43:41,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:43:41,072 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 23:43:41,136 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 23:43:41,137 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 23:43:41,137 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 23:43:41,137 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 23:43:41,138 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 23:43:41,138 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 23:43:41,139 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 23:43:41,139 INFO L87 Difference]: Start difference. First operand 158 states and 168 transitions. Second operand 4 states. [2018-01-24 23:43:41,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 23:43:41,328 INFO L93 Difference]: Finished difference Result 158 states and 168 transitions. [2018-01-24 23:43:41,328 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 23:43:41,329 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-24 23:43:41,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 23:43:41,331 INFO L225 Difference]: With dead ends: 158 [2018-01-24 23:43:41,331 INFO L226 Difference]: Without dead ends: 155 [2018-01-24 23:43:41,332 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 23:43:41,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2018-01-24 23:43:41,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2018-01-24 23:43:41,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-01-24 23:43:41,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 165 transitions. [2018-01-24 23:43:41,345 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 165 transitions. Word has length 8 [2018-01-24 23:43:41,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 23:43:41,345 INFO L432 AbstractCegarLoop]: Abstraction has 155 states and 165 transitions. [2018-01-24 23:43:41,345 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 23:43:41,346 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 165 transitions. [2018-01-24 23:43:41,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-01-24 23:43:41,346 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:43:41,346 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 23:43:41,347 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr74EnsuresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr72RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr73RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 23:43:41,347 INFO L82 PathProgramCache]: Analyzing trace with hash -2080332291, now seen corresponding path program 1 times [2018-01-24 23:43:41,347 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:43:41,348 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:43:41,348 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:43:41,348 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:43:41,349 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:43:41,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:43:41,366 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 23:43:41,414 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 23:43:41,414 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 23:43:41,414 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 23:43:41,414 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 23:43:41,415 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 23:43:41,415 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 23:43:41,415 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 23:43:41,415 INFO L87 Difference]: Start difference. First operand 155 states and 165 transitions. Second operand 4 states. [2018-01-24 23:43:41,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 23:43:41,589 INFO L93 Difference]: Finished difference Result 179 states and 190 transitions. [2018-01-24 23:43:41,589 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 23:43:41,589 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2018-01-24 23:43:41,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 23:43:41,591 INFO L225 Difference]: With dead ends: 179 [2018-01-24 23:43:41,591 INFO L226 Difference]: Without dead ends: 161 [2018-01-24 23:43:41,591 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 23:43:41,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2018-01-24 23:43:41,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 140. [2018-01-24 23:43:41,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2018-01-24 23:43:41,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 151 transitions. [2018-01-24 23:43:41,603 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 151 transitions. Word has length 15 [2018-01-24 23:43:41,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 23:43:41,603 INFO L432 AbstractCegarLoop]: Abstraction has 140 states and 151 transitions. [2018-01-24 23:43:41,603 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 23:43:41,604 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 151 transitions. [2018-01-24 23:43:41,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-01-24 23:43:41,604 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:43:41,604 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 23:43:41,605 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr74EnsuresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr72RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr73RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 23:43:41,605 INFO L82 PathProgramCache]: Analyzing trace with hash -2080332290, now seen corresponding path program 1 times [2018-01-24 23:43:41,605 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:43:41,606 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:43:41,606 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:43:41,606 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:43:41,606 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:43:41,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:43:41,622 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 23:43:41,711 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 23:43:41,711 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 23:43:41,711 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 23:43:41,712 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 23:43:41,712 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 23:43:41,712 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 23:43:41,712 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 23:43:41,713 INFO L87 Difference]: Start difference. First operand 140 states and 151 transitions. Second operand 5 states. [2018-01-24 23:43:41,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 23:43:41,926 INFO L93 Difference]: Finished difference Result 210 states and 228 transitions. [2018-01-24 23:43:41,927 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 23:43:41,927 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2018-01-24 23:43:41,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 23:43:41,930 INFO L225 Difference]: With dead ends: 210 [2018-01-24 23:43:41,931 INFO L226 Difference]: Without dead ends: 196 [2018-01-24 23:43:41,931 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 23:43:41,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2018-01-24 23:43:41,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 176. [2018-01-24 23:43:41,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2018-01-24 23:43:41,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 203 transitions. [2018-01-24 23:43:41,944 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 203 transitions. Word has length 15 [2018-01-24 23:43:41,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 23:43:41,945 INFO L432 AbstractCegarLoop]: Abstraction has 176 states and 203 transitions. [2018-01-24 23:43:41,945 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 23:43:41,945 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 203 transitions. [2018-01-24 23:43:41,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-01-24 23:43:41,946 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:43:41,946 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 23:43:41,947 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr74EnsuresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr72RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr73RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 23:43:41,947 INFO L82 PathProgramCache]: Analyzing trace with hash -2037600517, now seen corresponding path program 1 times [2018-01-24 23:43:41,948 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:43:41,949 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:43:41,949 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:43:41,949 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:43:41,949 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:43:41,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:43:41,963 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 23:43:42,004 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 23:43:42,004 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 23:43:42,004 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 23:43:42,004 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 23:43:42,004 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 23:43:42,005 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 23:43:42,005 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 23:43:42,005 INFO L87 Difference]: Start difference. First operand 176 states and 203 transitions. Second operand 4 states. [2018-01-24 23:43:42,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 23:43:42,121 INFO L93 Difference]: Finished difference Result 192 states and 219 transitions. [2018-01-24 23:43:42,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 23:43:42,122 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2018-01-24 23:43:42,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 23:43:42,123 INFO L225 Difference]: With dead ends: 192 [2018-01-24 23:43:42,123 INFO L226 Difference]: Without dead ends: 189 [2018-01-24 23:43:42,123 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 23:43:42,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2018-01-24 23:43:42,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 177. [2018-01-24 23:43:42,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2018-01-24 23:43:42,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 206 transitions. [2018-01-24 23:43:42,134 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 206 transitions. Word has length 17 [2018-01-24 23:43:42,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 23:43:42,134 INFO L432 AbstractCegarLoop]: Abstraction has 177 states and 206 transitions. [2018-01-24 23:43:42,134 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 23:43:42,135 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 206 transitions. [2018-01-24 23:43:42,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-01-24 23:43:42,135 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:43:42,135 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 23:43:42,136 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr74EnsuresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr72RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr73RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 23:43:42,136 INFO L82 PathProgramCache]: Analyzing trace with hash -2037600516, now seen corresponding path program 1 times [2018-01-24 23:43:42,136 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:43:42,137 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:43:42,137 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:43:42,137 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:43:42,137 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:43:42,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:43:42,151 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 23:43:42,201 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 23:43:42,201 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 23:43:42,202 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 23:43:42,202 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 23:43:42,202 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 23:43:42,202 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 23:43:42,202 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 23:43:42,202 INFO L87 Difference]: Start difference. First operand 177 states and 206 transitions. Second operand 4 states. [2018-01-24 23:43:42,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 23:43:42,355 INFO L93 Difference]: Finished difference Result 182 states and 209 transitions. [2018-01-24 23:43:42,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 23:43:42,356 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2018-01-24 23:43:42,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 23:43:42,357 INFO L225 Difference]: With dead ends: 182 [2018-01-24 23:43:42,357 INFO L226 Difference]: Without dead ends: 179 [2018-01-24 23:43:42,358 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 23:43:42,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-01-24 23:43:42,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 175. [2018-01-24 23:43:42,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-01-24 23:43:42,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 203 transitions. [2018-01-24 23:43:42,366 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 203 transitions. Word has length 17 [2018-01-24 23:43:42,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 23:43:42,367 INFO L432 AbstractCegarLoop]: Abstraction has 175 states and 203 transitions. [2018-01-24 23:43:42,367 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 23:43:42,367 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 203 transitions. [2018-01-24 23:43:42,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-24 23:43:42,368 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:43:42,368 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 23:43:42,368 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr74EnsuresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr72RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr73RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 23:43:42,368 INFO L82 PathProgramCache]: Analyzing trace with hash 1339674347, now seen corresponding path program 1 times [2018-01-24 23:43:42,368 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:43:42,369 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:43:42,369 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:43:42,369 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:43:42,369 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:43:42,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:43:42,380 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 23:43:42,419 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 23:43:42,420 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 23:43:42,420 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 23:43:42,420 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 23:43:42,420 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 23:43:42,421 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 23:43:42,421 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 23:43:42,421 INFO L87 Difference]: Start difference. First operand 175 states and 203 transitions. Second operand 4 states. [2018-01-24 23:43:42,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 23:43:42,467 INFO L93 Difference]: Finished difference Result 179 states and 206 transitions. [2018-01-24 23:43:42,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 23:43:42,468 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2018-01-24 23:43:42,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 23:43:42,470 INFO L225 Difference]: With dead ends: 179 [2018-01-24 23:43:42,470 INFO L226 Difference]: Without dead ends: 176 [2018-01-24 23:43:42,470 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 23:43:42,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2018-01-24 23:43:42,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 175. [2018-01-24 23:43:42,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-01-24 23:43:42,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 202 transitions. [2018-01-24 23:43:42,478 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 202 transitions. Word has length 22 [2018-01-24 23:43:42,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 23:43:42,478 INFO L432 AbstractCegarLoop]: Abstraction has 175 states and 202 transitions. [2018-01-24 23:43:42,478 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 23:43:42,479 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 202 transitions. [2018-01-24 23:43:42,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-01-24 23:43:42,479 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:43:42,480 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] [2018-01-24 23:43:42,480 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr74EnsuresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr72RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr73RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 23:43:42,480 INFO L82 PathProgramCache]: Analyzing trace with hash -1419766941, now seen corresponding path program 1 times [2018-01-24 23:43:42,480 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:43:42,481 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:43:42,481 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:43:42,481 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:43:42,481 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:43:42,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:43:42,493 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 23:43:42,535 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 23:43:42,536 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 23:43:42,536 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 23:43:42,536 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 23:43:42,536 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 23:43:42,537 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 23:43:42,537 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-24 23:43:42,537 INFO L87 Difference]: Start difference. First operand 175 states and 202 transitions. Second operand 5 states. [2018-01-24 23:43:42,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 23:43:42,661 INFO L93 Difference]: Finished difference Result 194 states and 223 transitions. [2018-01-24 23:43:42,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 23:43:42,661 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2018-01-24 23:43:42,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 23:43:42,662 INFO L225 Difference]: With dead ends: 194 [2018-01-24 23:43:42,662 INFO L226 Difference]: Without dead ends: 190 [2018-01-24 23:43:42,663 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 23:43:42,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2018-01-24 23:43:42,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 174. [2018-01-24 23:43:42,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2018-01-24 23:43:42,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 202 transitions. [2018-01-24 23:43:42,669 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 202 transitions. Word has length 23 [2018-01-24 23:43:42,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 23:43:42,669 INFO L432 AbstractCegarLoop]: Abstraction has 174 states and 202 transitions. [2018-01-24 23:43:42,669 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 23:43:42,670 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 202 transitions. [2018-01-24 23:43:42,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-01-24 23:43:42,670 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:43:42,670 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] [2018-01-24 23:43:42,670 INFO L371 AbstractCegarLoop]: === Iteration 9 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr74EnsuresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr72RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr73RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 23:43:42,671 INFO L82 PathProgramCache]: Analyzing trace with hash -1419766940, now seen corresponding path program 1 times [2018-01-24 23:43:42,671 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:43:42,671 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:43:42,671 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:43:42,671 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:43:42,671 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:43:42,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:43:42,685 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 23:43:42,746 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 23:43:42,746 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 23:43:42,746 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 23:43:42,746 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 23:43:42,746 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 23:43:42,747 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 23:43:42,747 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 23:43:42,747 INFO L87 Difference]: Start difference. First operand 174 states and 202 transitions. Second operand 5 states. [2018-01-24 23:43:42,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 23:43:42,929 INFO L93 Difference]: Finished difference Result 196 states and 225 transitions. [2018-01-24 23:43:42,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 23:43:42,929 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2018-01-24 23:43:42,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 23:43:42,930 INFO L225 Difference]: With dead ends: 196 [2018-01-24 23:43:42,930 INFO L226 Difference]: Without dead ends: 194 [2018-01-24 23:43:42,930 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 23:43:42,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2018-01-24 23:43:42,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 176. [2018-01-24 23:43:42,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2018-01-24 23:43:42,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 203 transitions. [2018-01-24 23:43:42,936 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 203 transitions. Word has length 23 [2018-01-24 23:43:42,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 23:43:42,937 INFO L432 AbstractCegarLoop]: Abstraction has 176 states and 203 transitions. [2018-01-24 23:43:42,937 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 23:43:42,937 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 203 transitions. [2018-01-24 23:43:42,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-01-24 23:43:42,938 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:43:42,938 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] [2018-01-24 23:43:42,938 INFO L371 AbstractCegarLoop]: === Iteration 10 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr74EnsuresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr72RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr73RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 23:43:42,939 INFO L82 PathProgramCache]: Analyzing trace with hash 916114990, now seen corresponding path program 1 times [2018-01-24 23:43:42,939 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:43:42,940 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:43:42,940 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:43:42,940 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:43:42,940 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:43:42,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:43:42,949 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 23:43:42,975 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 23:43:42,975 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 23:43:42,975 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 23:43:42,975 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 23:43:42,975 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-24 23:43:42,976 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-24 23:43:42,976 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-24 23:43:42,976 INFO L87 Difference]: Start difference. First operand 176 states and 203 transitions. Second operand 3 states. [2018-01-24 23:43:42,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 23:43:42,989 INFO L93 Difference]: Finished difference Result 344 states and 400 transitions. [2018-01-24 23:43:42,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-24 23:43:42,990 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2018-01-24 23:43:42,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 23:43:42,991 INFO L225 Difference]: With dead ends: 344 [2018-01-24 23:43:42,992 INFO L226 Difference]: Without dead ends: 178 [2018-01-24 23:43:42,993 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 23:43:42,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2018-01-24 23:43:43,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2018-01-24 23:43:43,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2018-01-24 23:43:43,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 205 transitions. [2018-01-24 23:43:43,002 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 205 transitions. Word has length 23 [2018-01-24 23:43:43,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 23:43:43,002 INFO L432 AbstractCegarLoop]: Abstraction has 178 states and 205 transitions. [2018-01-24 23:43:43,002 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-24 23:43:43,003 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 205 transitions. [2018-01-24 23:43:43,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-24 23:43:43,004 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:43:43,004 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, 1] [2018-01-24 23:43:43,004 INFO L371 AbstractCegarLoop]: === Iteration 11 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr74EnsuresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr72RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr73RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 23:43:43,004 INFO L82 PathProgramCache]: Analyzing trace with hash -1108120181, now seen corresponding path program 1 times [2018-01-24 23:43:43,004 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:43:43,005 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:43:43,005 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:43:43,006 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:43:43,006 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:43:43,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:43:43,021 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 23:43:43,168 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 23:43:43,169 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 23:43:43,169 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-24 23:43:43,169 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 23:43:43,169 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-24 23:43:43,169 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-24 23:43:43,170 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-24 23:43:43,170 INFO L87 Difference]: Start difference. First operand 178 states and 205 transitions. Second operand 6 states. [2018-01-24 23:43:43,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 23:43:43,512 INFO L93 Difference]: Finished difference Result 389 states and 450 transitions. [2018-01-24 23:43:43,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-24 23:43:43,513 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2018-01-24 23:43:43,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 23:43:43,514 INFO L225 Difference]: With dead ends: 389 [2018-01-24 23:43:43,514 INFO L226 Difference]: Without dead ends: 221 [2018-01-24 23:43:43,515 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 3 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 23:43:43,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2018-01-24 23:43:43,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 194. [2018-01-24 23:43:43,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2018-01-24 23:43:43,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 226 transitions. [2018-01-24 23:43:43,528 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 226 transitions. Word has length 25 [2018-01-24 23:43:43,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 23:43:43,528 INFO L432 AbstractCegarLoop]: Abstraction has 194 states and 226 transitions. [2018-01-24 23:43:43,528 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-24 23:43:43,528 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 226 transitions. [2018-01-24 23:43:43,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-01-24 23:43:43,529 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:43:43,529 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 23:43:43,529 INFO L371 AbstractCegarLoop]: === Iteration 12 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr74EnsuresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr72RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr73RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 23:43:43,530 INFO L82 PathProgramCache]: Analyzing trace with hash 561139669, now seen corresponding path program 1 times [2018-01-24 23:43:43,530 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:43:43,531 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:43:43,531 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:43:43,531 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:43:43,531 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:43:43,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:43:43,550 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 23:43:43,847 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 23:43:43,848 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 23:43:43,848 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-01-24 23:43:43,848 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 23:43:43,848 INFO L409 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-01-24 23:43:43,848 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-01-24 23:43:43,848 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2018-01-24 23:43:43,849 INFO L87 Difference]: Start difference. First operand 194 states and 226 transitions. Second operand 12 states. [2018-01-24 23:43:44,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 23:43:44,500 INFO L93 Difference]: Finished difference Result 211 states and 246 transitions. [2018-01-24 23:43:44,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-24 23:43:44,501 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 26 [2018-01-24 23:43:44,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 23:43:44,502 INFO L225 Difference]: With dead ends: 211 [2018-01-24 23:43:44,502 INFO L226 Difference]: Without dead ends: 210 [2018-01-24 23:43:44,502 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=144, Invalid=408, Unknown=0, NotChecked=0, Total=552 [2018-01-24 23:43:44,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2018-01-24 23:43:44,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 195. [2018-01-24 23:43:44,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-01-24 23:43:44,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 228 transitions. [2018-01-24 23:43:44,508 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 228 transitions. Word has length 26 [2018-01-24 23:43:44,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 23:43:44,508 INFO L432 AbstractCegarLoop]: Abstraction has 195 states and 228 transitions. [2018-01-24 23:43:44,508 INFO L433 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-01-24 23:43:44,509 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 228 transitions. [2018-01-24 23:43:44,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-01-24 23:43:44,509 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:43:44,509 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 23:43:44,510 INFO L371 AbstractCegarLoop]: === Iteration 13 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr74EnsuresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr72RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr73RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 23:43:44,510 INFO L82 PathProgramCache]: Analyzing trace with hash 561139670, now seen corresponding path program 1 times [2018-01-24 23:43:44,510 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:43:44,511 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:43:44,511 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:43:44,511 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:43:44,511 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:43:44,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:43:44,528 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 23:43:44,878 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 23:43:44,878 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 23:43:44,879 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-01-24 23:43:44,879 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 23:43:44,879 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-01-24 23:43:44,879 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-01-24 23:43:44,879 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2018-01-24 23:43:44,879 INFO L87 Difference]: Start difference. First operand 195 states and 228 transitions. Second operand 13 states. [2018-01-24 23:43:45,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 23:43:45,590 INFO L93 Difference]: Finished difference Result 266 states and 294 transitions. [2018-01-24 23:43:45,590 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-01-24 23:43:45,590 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 26 [2018-01-24 23:43:45,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 23:43:45,592 INFO L225 Difference]: With dead ends: 266 [2018-01-24 23:43:45,592 INFO L226 Difference]: Without dead ends: 263 [2018-01-24 23:43:45,592 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=141, Invalid=561, Unknown=0, NotChecked=0, Total=702 [2018-01-24 23:43:45,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2018-01-24 23:43:45,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 199. [2018-01-24 23:43:45,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-01-24 23:43:45,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 233 transitions. [2018-01-24 23:43:45,603 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 233 transitions. Word has length 26 [2018-01-24 23:43:45,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 23:43:45,603 INFO L432 AbstractCegarLoop]: Abstraction has 199 states and 233 transitions. [2018-01-24 23:43:45,603 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-01-24 23:43:45,603 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 233 transitions. [2018-01-24 23:43:45,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-01-24 23:43:45,604 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:43:45,604 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 23:43:45,605 INFO L371 AbstractCegarLoop]: === Iteration 14 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr74EnsuresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr72RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr73RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 23:43:45,605 INFO L82 PathProgramCache]: Analyzing trace with hash -106162311, now seen corresponding path program 1 times [2018-01-24 23:43:45,605 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:43:45,605 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:43:45,606 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:43:45,606 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:43:45,606 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:43:45,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:43:45,616 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 23:43:45,663 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 23:43:45,663 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 23:43:45,663 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 23:43:45,663 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 23:43:45,664 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 23:43:45,664 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 23:43:45,664 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 23:43:45,664 INFO L87 Difference]: Start difference. First operand 199 states and 233 transitions. Second operand 5 states. [2018-01-24 23:43:45,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 23:43:45,915 INFO L93 Difference]: Finished difference Result 293 states and 346 transitions. [2018-01-24 23:43:45,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 23:43:45,915 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2018-01-24 23:43:45,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 23:43:45,917 INFO L225 Difference]: With dead ends: 293 [2018-01-24 23:43:45,917 INFO L226 Difference]: Without dead ends: 292 [2018-01-24 23:43:45,917 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 23:43:45,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2018-01-24 23:43:45,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 198. [2018-01-24 23:43:45,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2018-01-24 23:43:45,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 231 transitions. [2018-01-24 23:43:45,924 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 231 transitions. Word has length 26 [2018-01-24 23:43:45,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 23:43:45,924 INFO L432 AbstractCegarLoop]: Abstraction has 198 states and 231 transitions. [2018-01-24 23:43:45,924 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 23:43:45,925 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 231 transitions. [2018-01-24 23:43:45,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-01-24 23:43:45,925 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:43:45,925 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 23:43:45,925 INFO L371 AbstractCegarLoop]: === Iteration 15 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr74EnsuresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr72RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr73RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 23:43:45,926 INFO L82 PathProgramCache]: Analyzing trace with hash -106162310, now seen corresponding path program 1 times [2018-01-24 23:43:45,926 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:43:45,926 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:43:45,926 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:43:45,927 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:43:45,927 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:43:45,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:43:45,937 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 23:43:46,017 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 23:43:46,017 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 23:43:46,017 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 23:43:46,017 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 23:43:46,017 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 23:43:46,018 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 23:43:46,018 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 23:43:46,018 INFO L87 Difference]: Start difference. First operand 198 states and 231 transitions. Second operand 5 states. [2018-01-24 23:43:46,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 23:43:46,882 INFO L93 Difference]: Finished difference Result 282 states and 334 transitions. [2018-01-24 23:43:46,882 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 23:43:46,882 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2018-01-24 23:43:46,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 23:43:46,883 INFO L225 Difference]: With dead ends: 282 [2018-01-24 23:43:46,883 INFO L226 Difference]: Without dead ends: 281 [2018-01-24 23:43:46,884 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-24 23:43:46,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2018-01-24 23:43:46,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 197. [2018-01-24 23:43:46,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-01-24 23:43:46,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 229 transitions. [2018-01-24 23:43:46,892 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 229 transitions. Word has length 26 [2018-01-24 23:43:46,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 23:43:46,893 INFO L432 AbstractCegarLoop]: Abstraction has 197 states and 229 transitions. [2018-01-24 23:43:46,893 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 23:43:46,893 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 229 transitions. [2018-01-24 23:43:46,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-24 23:43:46,893 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:43:46,893 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 23:43:46,893 INFO L371 AbstractCegarLoop]: === Iteration 16 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr74EnsuresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr72RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr73RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 23:43:46,893 INFO L82 PathProgramCache]: Analyzing trace with hash -1585416537, now seen corresponding path program 1 times [2018-01-24 23:43:46,894 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:43:46,894 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:43:46,894 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:43:46,894 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:43:46,895 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:43:46,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:43:46,906 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 23:43:47,158 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 23:43:47,158 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 23:43:47,159 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-24 23:43:47,159 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 23:43:47,159 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-24 23:43:47,159 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-24 23:43:47,159 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-01-24 23:43:47,160 INFO L87 Difference]: Start difference. First operand 197 states and 229 transitions. Second operand 9 states. [2018-01-24 23:43:47,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 23:43:47,761 INFO L93 Difference]: Finished difference Result 244 states and 286 transitions. [2018-01-24 23:43:47,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-24 23:43:47,761 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2018-01-24 23:43:47,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 23:43:47,762 INFO L225 Difference]: With dead ends: 244 [2018-01-24 23:43:47,762 INFO L226 Difference]: Without dead ends: 243 [2018-01-24 23:43:47,763 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2018-01-24 23:43:47,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-01-24 23:43:47,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 196. [2018-01-24 23:43:47,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2018-01-24 23:43:47,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 227 transitions. [2018-01-24 23:43:47,769 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 227 transitions. Word has length 29 [2018-01-24 23:43:47,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 23:43:47,769 INFO L432 AbstractCegarLoop]: Abstraction has 196 states and 227 transitions. [2018-01-24 23:43:47,769 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-24 23:43:47,769 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 227 transitions. [2018-01-24 23:43:47,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-24 23:43:47,770 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:43:47,770 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 23:43:47,770 INFO L371 AbstractCegarLoop]: === Iteration 17 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr74EnsuresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr72RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr73RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 23:43:47,770 INFO L82 PathProgramCache]: Analyzing trace with hash -1585416536, now seen corresponding path program 1 times [2018-01-24 23:43:47,771 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:43:47,771 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:43:47,771 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:43:47,771 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:43:47,771 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:43:47,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:43:47,781 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 23:43:48,009 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 23:43:48,009 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 23:43:48,009 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-24 23:43:48,010 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 23:43:48,010 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-24 23:43:48,010 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-24 23:43:48,010 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-01-24 23:43:48,010 INFO L87 Difference]: Start difference. First operand 196 states and 227 transitions. Second operand 9 states. [2018-01-24 23:43:48,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 23:43:48,512 INFO L93 Difference]: Finished difference Result 243 states and 284 transitions. [2018-01-24 23:43:48,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-24 23:43:48,512 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2018-01-24 23:43:48,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 23:43:48,514 INFO L225 Difference]: With dead ends: 243 [2018-01-24 23:43:48,514 INFO L226 Difference]: Without dead ends: 242 [2018-01-24 23:43:48,514 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2018-01-24 23:43:48,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2018-01-24 23:43:48,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 195. [2018-01-24 23:43:48,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-01-24 23:43:48,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 225 transitions. [2018-01-24 23:43:48,524 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 225 transitions. Word has length 29 [2018-01-24 23:43:48,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 23:43:48,524 INFO L432 AbstractCegarLoop]: Abstraction has 195 states and 225 transitions. [2018-01-24 23:43:48,524 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-24 23:43:48,524 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 225 transitions. [2018-01-24 23:43:48,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-24 23:43:48,525 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:43:48,525 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] [2018-01-24 23:43:48,525 INFO L371 AbstractCegarLoop]: === Iteration 18 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr74EnsuresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr72RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr73RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 23:43:48,525 INFO L82 PathProgramCache]: Analyzing trace with hash 2109118679, now seen corresponding path program 1 times [2018-01-24 23:43:48,526 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:43:48,526 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:43:48,527 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:43:48,527 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:43:48,527 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:43:48,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:43:48,537 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 23:43:48,560 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 23:43:48,560 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 23:43:48,560 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 23:43:48,560 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 23:43:48,560 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 23:43:48,561 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 23:43:48,561 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 23:43:48,561 INFO L87 Difference]: Start difference. First operand 195 states and 225 transitions. Second operand 4 states. [2018-01-24 23:43:48,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 23:43:48,675 INFO L93 Difference]: Finished difference Result 212 states and 243 transitions. [2018-01-24 23:43:48,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 23:43:48,675 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-01-24 23:43:48,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 23:43:48,676 INFO L225 Difference]: With dead ends: 212 [2018-01-24 23:43:48,676 INFO L226 Difference]: Without dead ends: 211 [2018-01-24 23:43:48,676 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 23:43:48,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-01-24 23:43:48,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 194. [2018-01-24 23:43:48,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2018-01-24 23:43:48,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 224 transitions. [2018-01-24 23:43:48,682 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 224 transitions. Word has length 30 [2018-01-24 23:43:48,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 23:43:48,682 INFO L432 AbstractCegarLoop]: Abstraction has 194 states and 224 transitions. [2018-01-24 23:43:48,682 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 23:43:48,682 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 224 transitions. [2018-01-24 23:43:48,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-24 23:43:48,682 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:43:48,683 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] [2018-01-24 23:43:48,683 INFO L371 AbstractCegarLoop]: === Iteration 19 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr74EnsuresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr72RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr73RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 23:43:48,683 INFO L82 PathProgramCache]: Analyzing trace with hash 2109118680, now seen corresponding path program 1 times [2018-01-24 23:43:48,683 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:43:48,684 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:43:48,684 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:43:48,684 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:43:48,684 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:43:48,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:43:48,692 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 23:43:48,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 23:43:48,752 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 23:43:48,753 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 23:43:48,753 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 23:43:48,753 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 23:43:48,753 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 23:43:48,753 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 23:43:48,754 INFO L87 Difference]: Start difference. First operand 194 states and 224 transitions. Second operand 4 states. [2018-01-24 23:43:48,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 23:43:48,989 INFO L93 Difference]: Finished difference Result 241 states and 274 transitions. [2018-01-24 23:43:48,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 23:43:48,990 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-01-24 23:43:48,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 23:43:48,991 INFO L225 Difference]: With dead ends: 241 [2018-01-24 23:43:48,991 INFO L226 Difference]: Without dead ends: 239 [2018-01-24 23:43:48,991 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 23:43:48,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2018-01-24 23:43:48,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 192. [2018-01-24 23:43:48,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2018-01-24 23:43:48,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 222 transitions. [2018-01-24 23:43:48,996 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 222 transitions. Word has length 30 [2018-01-24 23:43:48,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 23:43:48,997 INFO L432 AbstractCegarLoop]: Abstraction has 192 states and 222 transitions. [2018-01-24 23:43:48,997 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 23:43:48,997 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 222 transitions. [2018-01-24 23:43:48,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-24 23:43:48,997 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:43:48,997 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] [2018-01-24 23:43:48,997 INFO L371 AbstractCegarLoop]: === Iteration 20 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr74EnsuresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr72RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr73RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 23:43:48,998 INFO L82 PathProgramCache]: Analyzing trace with hash -160241763, now seen corresponding path program 1 times [2018-01-24 23:43:48,998 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:43:48,998 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:43:48,998 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:43:48,998 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:43:48,999 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:43:49,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:43:49,006 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 23:43:49,052 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 23:43:49,052 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 23:43:49,052 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 23:43:49,052 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 23:43:49,052 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 23:43:49,052 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 23:43:49,053 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 23:43:49,053 INFO L87 Difference]: Start difference. First operand 192 states and 222 transitions. Second operand 5 states. [2018-01-24 23:43:49,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 23:43:49,270 INFO L93 Difference]: Finished difference Result 284 states and 331 transitions. [2018-01-24 23:43:49,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 23:43:49,271 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2018-01-24 23:43:49,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 23:43:49,272 INFO L225 Difference]: With dead ends: 284 [2018-01-24 23:43:49,272 INFO L226 Difference]: Without dead ends: 283 [2018-01-24 23:43:49,272 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 23:43:49,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2018-01-24 23:43:49,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 191. [2018-01-24 23:43:49,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-01-24 23:43:49,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 220 transitions. [2018-01-24 23:43:49,280 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 220 transitions. Word has length 30 [2018-01-24 23:43:49,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 23:43:49,281 INFO L432 AbstractCegarLoop]: Abstraction has 191 states and 220 transitions. [2018-01-24 23:43:49,281 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 23:43:49,281 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 220 transitions. [2018-01-24 23:43:49,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-24 23:43:49,281 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:43:49,282 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] [2018-01-24 23:43:49,282 INFO L371 AbstractCegarLoop]: === Iteration 21 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr74EnsuresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr72RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr73RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 23:43:49,282 INFO L82 PathProgramCache]: Analyzing trace with hash -160241762, now seen corresponding path program 1 times [2018-01-24 23:43:49,282 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:43:49,283 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:43:49,283 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:43:49,283 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:43:49,283 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:43:49,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:43:49,294 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 23:43:49,362 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 23:43:49,362 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 23:43:49,362 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 23:43:49,363 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 23:43:49,363 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 23:43:49,363 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 23:43:49,363 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 23:43:49,363 INFO L87 Difference]: Start difference. First operand 191 states and 220 transitions. Second operand 5 states. [2018-01-24 23:43:49,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 23:43:49,655 INFO L93 Difference]: Finished difference Result 273 states and 319 transitions. [2018-01-24 23:43:49,656 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 23:43:49,656 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2018-01-24 23:43:49,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 23:43:49,658 INFO L225 Difference]: With dead ends: 273 [2018-01-24 23:43:49,658 INFO L226 Difference]: Without dead ends: 272 [2018-01-24 23:43:49,658 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 23:43:49,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2018-01-24 23:43:49,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 190. [2018-01-24 23:43:49,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2018-01-24 23:43:49,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 218 transitions. [2018-01-24 23:43:49,669 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 218 transitions. Word has length 30 [2018-01-24 23:43:49,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 23:43:49,669 INFO L432 AbstractCegarLoop]: Abstraction has 190 states and 218 transitions. [2018-01-24 23:43:49,669 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 23:43:49,669 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 218 transitions. [2018-01-24 23:43:49,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-01-24 23:43:49,670 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:43:49,670 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 23:43:49,670 INFO L371 AbstractCegarLoop]: === Iteration 22 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr74EnsuresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr72RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr73RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 23:43:49,670 INFO L82 PathProgramCache]: Analyzing trace with hash 958169774, now seen corresponding path program 1 times [2018-01-24 23:43:49,671 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:43:49,671 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:43:49,671 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:43:49,672 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:43:49,672 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:43:49,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:43:49,697 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 23:43:49,748 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 23:43:49,748 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 23:43:49,748 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 23:43:49,748 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 23:43:49,749 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 23:43:49,749 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 23:43:49,749 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-24 23:43:49,749 INFO L87 Difference]: Start difference. First operand 190 states and 218 transitions. Second operand 4 states. [2018-01-24 23:43:49,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 23:43:49,903 INFO L93 Difference]: Finished difference Result 194 states and 223 transitions. [2018-01-24 23:43:49,905 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 23:43:49,905 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2018-01-24 23:43:49,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 23:43:49,907 INFO L225 Difference]: With dead ends: 194 [2018-01-24 23:43:49,907 INFO L226 Difference]: Without dead ends: 187 [2018-01-24 23:43:49,907 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-24 23:43:49,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-01-24 23:43:49,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 182. [2018-01-24 23:43:49,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2018-01-24 23:43:49,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 210 transitions. [2018-01-24 23:43:49,915 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 210 transitions. Word has length 31 [2018-01-24 23:43:49,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 23:43:49,916 INFO L432 AbstractCegarLoop]: Abstraction has 182 states and 210 transitions. [2018-01-24 23:43:49,916 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 23:43:49,916 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 210 transitions. [2018-01-24 23:43:49,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-01-24 23:43:49,916 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:43:49,916 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 23:43:49,917 INFO L371 AbstractCegarLoop]: === Iteration 23 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr74EnsuresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr72RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr73RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 23:43:49,917 INFO L82 PathProgramCache]: Analyzing trace with hash 53737817, now seen corresponding path program 1 times [2018-01-24 23:43:49,917 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:43:49,918 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:43:49,918 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:43:49,918 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:43:49,918 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:43:49,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:43:49,927 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 23:43:49,951 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 23:43:49,952 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 23:43:49,952 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 23:43:49,952 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 23:43:49,952 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 23:43:49,952 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 23:43:49,953 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 23:43:49,953 INFO L87 Difference]: Start difference. First operand 182 states and 210 transitions. Second operand 4 states. [2018-01-24 23:43:50,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 23:43:50,114 INFO L93 Difference]: Finished difference Result 191 states and 220 transitions. [2018-01-24 23:43:50,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 23:43:50,115 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2018-01-24 23:43:50,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 23:43:50,116 INFO L225 Difference]: With dead ends: 191 [2018-01-24 23:43:50,116 INFO L226 Difference]: Without dead ends: 190 [2018-01-24 23:43:50,116 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 23:43:50,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2018-01-24 23:43:50,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 181. [2018-01-24 23:43:50,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-01-24 23:43:50,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 209 transitions. [2018-01-24 23:43:50,124 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 209 transitions. Word has length 32 [2018-01-24 23:43:50,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 23:43:50,125 INFO L432 AbstractCegarLoop]: Abstraction has 181 states and 209 transitions. [2018-01-24 23:43:50,125 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 23:43:50,125 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 209 transitions. [2018-01-24 23:43:50,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-01-24 23:43:50,125 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:43:50,125 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 23:43:50,126 INFO L371 AbstractCegarLoop]: === Iteration 24 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr74EnsuresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr72RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr73RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 23:43:50,126 INFO L82 PathProgramCache]: Analyzing trace with hash 53737818, now seen corresponding path program 1 times [2018-01-24 23:43:50,126 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:43:50,127 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:43:50,127 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:43:50,128 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:43:50,128 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:43:50,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:43:50,138 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 23:43:50,176 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 23:43:50,176 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 23:43:50,176 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 23:43:50,176 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 23:43:50,177 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 23:43:50,177 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 23:43:50,177 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 23:43:50,177 INFO L87 Difference]: Start difference. First operand 181 states and 209 transitions. Second operand 4 states. [2018-01-24 23:43:50,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 23:43:50,300 INFO L93 Difference]: Finished difference Result 219 states and 249 transitions. [2018-01-24 23:43:50,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 23:43:50,300 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2018-01-24 23:43:50,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 23:43:50,301 INFO L225 Difference]: With dead ends: 219 [2018-01-24 23:43:50,301 INFO L226 Difference]: Without dead ends: 217 [2018-01-24 23:43:50,302 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 23:43:50,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2018-01-24 23:43:50,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 179. [2018-01-24 23:43:50,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-01-24 23:43:50,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 207 transitions. [2018-01-24 23:43:50,310 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 207 transitions. Word has length 32 [2018-01-24 23:43:50,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 23:43:50,310 INFO L432 AbstractCegarLoop]: Abstraction has 179 states and 207 transitions. [2018-01-24 23:43:50,310 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 23:43:50,311 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 207 transitions. [2018-01-24 23:43:50,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-01-24 23:43:50,311 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:43:50,311 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 23:43:50,311 INFO L371 AbstractCegarLoop]: === Iteration 25 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr74EnsuresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr72RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr73RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 23:43:50,312 INFO L82 PathProgramCache]: Analyzing trace with hash 611367904, now seen corresponding path program 1 times [2018-01-24 23:43:50,312 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:43:50,313 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:43:50,313 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:43:50,313 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:43:50,313 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:43:50,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:43:50,326 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 23:43:50,436 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 23:43:50,436 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 23:43:50,436 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-01-24 23:43:50,436 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 23:43:50,436 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-24 23:43:50,437 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-24 23:43:50,437 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-01-24 23:43:50,437 INFO L87 Difference]: Start difference. First operand 179 states and 207 transitions. Second operand 10 states. [2018-01-24 23:43:50,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 23:43:50,756 INFO L93 Difference]: Finished difference Result 228 states and 265 transitions. [2018-01-24 23:43:50,756 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-24 23:43:50,756 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 32 [2018-01-24 23:43:50,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 23:43:50,758 INFO L225 Difference]: With dead ends: 228 [2018-01-24 23:43:50,758 INFO L226 Difference]: Without dead ends: 227 [2018-01-24 23:43:50,758 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2018-01-24 23:43:50,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-01-24 23:43:50,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 178. [2018-01-24 23:43:50,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2018-01-24 23:43:50,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 205 transitions. [2018-01-24 23:43:50,767 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 205 transitions. Word has length 32 [2018-01-24 23:43:50,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 23:43:50,768 INFO L432 AbstractCegarLoop]: Abstraction has 178 states and 205 transitions. [2018-01-24 23:43:50,768 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-24 23:43:50,768 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 205 transitions. [2018-01-24 23:43:50,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-01-24 23:43:50,768 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:43:50,769 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 23:43:50,769 INFO L371 AbstractCegarLoop]: === Iteration 26 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr74EnsuresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr72RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr73RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 23:43:50,769 INFO L82 PathProgramCache]: Analyzing trace with hash 611367905, now seen corresponding path program 1 times [2018-01-24 23:43:50,769 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:43:50,770 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:43:50,770 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:43:50,770 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:43:50,770 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:43:50,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:43:50,783 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 23:43:50,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 23:43:50,984 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 23:43:50,984 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-01-24 23:43:50,984 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 23:43:50,985 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-24 23:43:50,985 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-24 23:43:50,985 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-01-24 23:43:50,985 INFO L87 Difference]: Start difference. First operand 178 states and 205 transitions. Second operand 10 states. [2018-01-24 23:43:51,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 23:43:51,443 INFO L93 Difference]: Finished difference Result 223 states and 258 transitions. [2018-01-24 23:43:51,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-01-24 23:43:51,444 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 32 [2018-01-24 23:43:51,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 23:43:51,445 INFO L225 Difference]: With dead ends: 223 [2018-01-24 23:43:51,445 INFO L226 Difference]: Without dead ends: 222 [2018-01-24 23:43:51,445 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2018-01-24 23:43:51,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2018-01-24 23:43:51,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 177. [2018-01-24 23:43:51,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2018-01-24 23:43:51,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 203 transitions. [2018-01-24 23:43:51,451 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 203 transitions. Word has length 32 [2018-01-24 23:43:51,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 23:43:51,451 INFO L432 AbstractCegarLoop]: Abstraction has 177 states and 203 transitions. [2018-01-24 23:43:51,451 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-24 23:43:51,451 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 203 transitions. [2018-01-24 23:43:51,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-01-24 23:43:51,452 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:43:51,452 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 23:43:51,452 INFO L371 AbstractCegarLoop]: === Iteration 27 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr74EnsuresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr72RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr73RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 23:43:51,452 INFO L82 PathProgramCache]: Analyzing trace with hash 1665872513, now seen corresponding path program 1 times [2018-01-24 23:43:51,452 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:43:51,453 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:43:51,453 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:43:51,453 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:43:51,453 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:43:51,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:43:51,464 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 23:43:51,553 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 23:43:51,553 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 23:43:51,581 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 23:43:51,582 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 23:43:51,582 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 23:43:51,582 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 23:43:51,582 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-01-24 23:43:51,582 INFO L87 Difference]: Start difference. First operand 177 states and 203 transitions. Second operand 5 states. [2018-01-24 23:43:51,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 23:43:51,702 INFO L93 Difference]: Finished difference Result 214 states and 245 transitions. [2018-01-24 23:43:51,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 23:43:51,703 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2018-01-24 23:43:51,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 23:43:51,703 INFO L225 Difference]: With dead ends: 214 [2018-01-24 23:43:51,704 INFO L226 Difference]: Without dead ends: 207 [2018-01-24 23:43:51,704 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-01-24 23:43:51,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2018-01-24 23:43:51,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 155. [2018-01-24 23:43:51,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-01-24 23:43:51,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 175 transitions. [2018-01-24 23:43:51,709 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 175 transitions. Word has length 33 [2018-01-24 23:43:51,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 23:43:51,709 INFO L432 AbstractCegarLoop]: Abstraction has 155 states and 175 transitions. [2018-01-24 23:43:51,709 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 23:43:51,709 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 175 transitions. [2018-01-24 23:43:51,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-01-24 23:43:51,710 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:43:51,710 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, 1] [2018-01-24 23:43:51,710 INFO L371 AbstractCegarLoop]: === Iteration 28 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr74EnsuresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr72RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr73RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 23:43:51,710 INFO L82 PathProgramCache]: Analyzing trace with hash 1679203151, now seen corresponding path program 1 times [2018-01-24 23:43:51,710 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:43:51,711 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:43:51,711 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:43:51,711 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:43:51,711 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:43:51,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:43:51,720 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 23:43:51,843 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 23:43:51,843 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 23:43:51,843 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-24 23:43:51,844 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 34 with the following transitions: [2018-01-24 23:43:51,846 INFO L201 CegarAbsIntRunner]: [0], [1], [5], [6], [7], [10], [13], [19], [21], [24], [153], [154], [155], [156], [159], [165], [171], [172], [173], [175], [176], [179], [180], [183], [202], [204], [223], [225], [234], [235], [236] [2018-01-24 23:43:51,897 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-24 23:43:51,898 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