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.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 15:39:01,985 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 15:39:01,987 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 15:39:02,002 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 15:39:02,003 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 15:39:02,004 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 15:39:02,005 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 15:39:02,007 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 15:39:02,009 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 15:39:02,010 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 15:39:02,010 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 15:39:02,011 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 15:39:02,012 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 15:39:02,013 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 15:39:02,014 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 15:39:02,017 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 15:39:02,019 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 15:39:02,021 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 15:39:02,022 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 15:39:02,024 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 15:39:02,026 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-24 15:39:02,026 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-24 15:39:02,027 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-24 15:39:02,028 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-24 15:39:02,029 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-24 15:39:02,030 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-24 15:39:02,030 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-24 15:39:02,031 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-24 15:39:02,031 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-24 15:39:02,031 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 15:39:02,032 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 15:39:02,032 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.epf [2018-01-24 15:39:02,040 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 15:39:02,040 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 15:39:02,041 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 15:39:02,041 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 15:39:02,042 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 15:39:02,042 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 15:39:02,042 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 15:39:02,043 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 15:39:02,043 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 15:39:02,043 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 15:39:02,043 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 15:39:02,043 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 15:39:02,044 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 15:39:02,044 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 15:39:02,044 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 15:39:02,044 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 15:39:02,044 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 15:39:02,045 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 15:39:02,045 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 15:39:02,045 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 15:39:02,045 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 15:39:02,045 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 15:39:02,045 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 15:39:02,046 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 15:39:02,046 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 15:39:02,046 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 15:39:02,046 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 15:39:02,046 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 15:39:02,047 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-24 15:39:02,047 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 15:39:02,047 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 15:39:02,047 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 15:39:02,047 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-24 15:39:02,048 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 15:39:02,048 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 15:39:02,081 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 15:39:02,092 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 15:39:02,095 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 15:39:02,096 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 15:39:02,097 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 15:39:02,097 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/memsafety-ext/tree_parent_ptr_true-valid-memsafety_false-termination.i [2018-01-24 15:39:02,262 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 15:39:02,267 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 15:39:02,268 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 15:39:02,268 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 15:39:02,273 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 15:39:02,274 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 03:39:02" (1/1) ... [2018-01-24 15:39:02,276 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bc7c49b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 03:39:02, skipping insertion in model container [2018-01-24 15:39:02,276 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 03:39:02" (1/1) ... [2018-01-24 15:39:02,289 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 15:39:02,326 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 15:39:02,446 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 15:39:02,467 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 15:39:02,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 03:39:02 WrapperNode [2018-01-24 15:39:02,477 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 15:39:02,478 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 15:39:02,478 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 15:39:02,479 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 15:39:02,493 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 03:39:02" (1/1) ... [2018-01-24 15:39:02,493 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 03:39:02" (1/1) ... [2018-01-24 15:39:02,502 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 03:39:02" (1/1) ... [2018-01-24 15:39:02,503 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 03:39:02" (1/1) ... [2018-01-24 15:39:02,509 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 03:39:02" (1/1) ... [2018-01-24 15:39:02,512 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 03:39:02" (1/1) ... [2018-01-24 15:39:02,514 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 03:39:02" (1/1) ... [2018-01-24 15:39:02,516 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 15:39:02,516 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 15:39:02,516 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 15:39:02,516 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 15:39:02,517 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 03:39:02" (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 15:39:02,568 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 15:39:02,568 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 15:39:02,568 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 15:39:02,568 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-24 15:39:02,569 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-24 15:39:02,569 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 15:39:02,569 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 15:39:02,569 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 15:39:02,569 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 15:39:02,569 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-24 15:39:02,570 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-24 15:39:02,570 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 15:39:02,570 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 15:39:02,570 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 15:39:03,169 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 15:39:03,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 03:39:03 BoogieIcfgContainer [2018-01-24 15:39:03,170 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 15:39:03,170 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-24 15:39:03,170 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-24 15:39:03,172 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-24 15:39:03,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.01 03:39:02" (1/3) ... [2018-01-24 15:39:03,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36052f4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 03:39:03, skipping insertion in model container [2018-01-24 15:39:03,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 03:39:02" (2/3) ... [2018-01-24 15:39:03,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36052f4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 03:39:03, skipping insertion in model container [2018-01-24 15:39:03,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 03:39:03" (3/3) ... [2018-01-24 15:39:03,175 INFO L105 eAbstractionObserver]: Analyzing ICFG tree_parent_ptr_true-valid-memsafety_false-termination.i [2018-01-24 15:39:03,181 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-24 15:39:03,187 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 75 error locations. [2018-01-24 15:39:03,229 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-24 15:39:03,229 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-24 15:39:03,229 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-24 15:39:03,229 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-24 15:39:03,229 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-24 15:39:03,229 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-24 15:39:03,229 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-24 15:39:03,230 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-24 15:39:03,230 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-24 15:39:03,251 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states. [2018-01-24 15:39:03,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-24 15:39:03,259 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 15:39:03,260 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 15:39:03,260 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 15:39:03,266 INFO L82 PathProgramCache]: Analyzing trace with hash -1759036932, now seen corresponding path program 1 times [2018-01-24 15:39:03,268 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 15:39:03,316 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:39:03,316 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 15:39:03,317 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:39:03,317 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 15:39:03,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 15:39:03,363 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 15:39:03,426 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 15:39:03,429 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 15:39:03,429 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 15:39:03,429 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 15:39:03,433 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 15:39:03,449 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 15:39:03,450 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 15:39:03,453 INFO L87 Difference]: Start difference. First operand 164 states. Second operand 4 states. [2018-01-24 15:39:03,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 15:39:03,836 INFO L93 Difference]: Finished difference Result 329 states and 357 transitions. [2018-01-24 15:39:03,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 15:39:03,838 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-24 15:39:03,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 15:39:03,849 INFO L225 Difference]: With dead ends: 329 [2018-01-24 15:39:03,849 INFO L226 Difference]: Without dead ends: 174 [2018-01-24 15:39:03,854 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 15:39:03,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2018-01-24 15:39:03,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 158. [2018-01-24 15:39:03,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2018-01-24 15:39:03,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 168 transitions. [2018-01-24 15:39:03,898 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 168 transitions. Word has length 8 [2018-01-24 15:39:03,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 15:39:03,899 INFO L432 AbstractCegarLoop]: Abstraction has 158 states and 168 transitions. [2018-01-24 15:39:03,899 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 15:39:03,899 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 168 transitions. [2018-01-24 15:39:03,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-24 15:39:03,900 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 15:39:03,900 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 15:39:03,900 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 15:39:03,900 INFO L82 PathProgramCache]: Analyzing trace with hash -1759036931, now seen corresponding path program 1 times [2018-01-24 15:39:03,900 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 15:39:03,901 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:39:03,901 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 15:39:03,901 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:39:03,901 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 15:39:03,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 15:39:03,921 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 15:39:04,026 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 15:39:04,026 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 15:39:04,026 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 15:39:04,027 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 15:39:04,028 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 15:39:04,029 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 15:39:04,029 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 15:39:04,029 INFO L87 Difference]: Start difference. First operand 158 states and 168 transitions. Second operand 4 states. [2018-01-24 15:39:04,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 15:39:04,274 INFO L93 Difference]: Finished difference Result 158 states and 168 transitions. [2018-01-24 15:39:04,275 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 15:39:04,275 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-24 15:39:04,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 15:39:04,277 INFO L225 Difference]: With dead ends: 158 [2018-01-24 15:39:04,277 INFO L226 Difference]: Without dead ends: 155 [2018-01-24 15:39:04,278 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-24 15:39:04,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2018-01-24 15:39:04,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2018-01-24 15:39:04,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-01-24 15:39:04,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 165 transitions. [2018-01-24 15:39:04,287 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 165 transitions. Word has length 8 [2018-01-24 15:39:04,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 15:39:04,287 INFO L432 AbstractCegarLoop]: Abstraction has 155 states and 165 transitions. [2018-01-24 15:39:04,288 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 15:39:04,288 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 165 transitions. [2018-01-24 15:39:04,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-01-24 15:39:04,288 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 15:39:04,288 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 15:39:04,288 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 15:39:04,289 INFO L82 PathProgramCache]: Analyzing trace with hash -2080332291, now seen corresponding path program 1 times [2018-01-24 15:39:04,289 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 15:39:04,289 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:39:04,290 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 15:39:04,290 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:39:04,290 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 15:39:04,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 15:39:04,308 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 15:39:04,346 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 15:39:04,346 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 15:39:04,346 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 15:39:04,346 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 15:39:04,346 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 15:39:04,347 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 15:39:04,347 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 15:39:04,347 INFO L87 Difference]: Start difference. First operand 155 states and 165 transitions. Second operand 4 states. [2018-01-24 15:39:04,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 15:39:04,496 INFO L93 Difference]: Finished difference Result 179 states and 190 transitions. [2018-01-24 15:39:04,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 15:39:04,496 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2018-01-24 15:39:04,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 15:39:04,497 INFO L225 Difference]: With dead ends: 179 [2018-01-24 15:39:04,498 INFO L226 Difference]: Without dead ends: 161 [2018-01-24 15:39:04,498 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 15:39:04,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2018-01-24 15:39:04,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 140. [2018-01-24 15:39:04,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2018-01-24 15:39:04,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 151 transitions. [2018-01-24 15:39:04,508 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 151 transitions. Word has length 15 [2018-01-24 15:39:04,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 15:39:04,508 INFO L432 AbstractCegarLoop]: Abstraction has 140 states and 151 transitions. [2018-01-24 15:39:04,508 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 15:39:04,509 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 151 transitions. [2018-01-24 15:39:04,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-01-24 15:39:04,509 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 15:39:04,510 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 15:39:04,510 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 15:39:04,510 INFO L82 PathProgramCache]: Analyzing trace with hash -2080332290, now seen corresponding path program 1 times [2018-01-24 15:39:04,510 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 15:39:04,511 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:39:04,511 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 15:39:04,512 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:39:04,512 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 15:39:04,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 15:39:04,530 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 15:39:04,616 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 15:39:04,616 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 15:39:04,616 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 15:39:04,617 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 15:39:04,617 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 15:39:04,617 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 15:39:04,617 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 15:39:04,618 INFO L87 Difference]: Start difference. First operand 140 states and 151 transitions. Second operand 5 states. [2018-01-24 15:39:04,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 15:39:04,832 INFO L93 Difference]: Finished difference Result 210 states and 228 transitions. [2018-01-24 15:39:04,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 15:39:04,833 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2018-01-24 15:39:04,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 15:39:04,836 INFO L225 Difference]: With dead ends: 210 [2018-01-24 15:39:04,836 INFO L226 Difference]: Without dead ends: 196 [2018-01-24 15:39:04,837 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 15:39:04,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2018-01-24 15:39:04,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 176. [2018-01-24 15:39:04,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2018-01-24 15:39:04,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 203 transitions. [2018-01-24 15:39:04,850 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 203 transitions. Word has length 15 [2018-01-24 15:39:04,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 15:39:04,851 INFO L432 AbstractCegarLoop]: Abstraction has 176 states and 203 transitions. [2018-01-24 15:39:04,851 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 15:39:04,851 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 203 transitions. [2018-01-24 15:39:04,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-01-24 15:39:04,852 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 15:39:04,852 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 15:39:04,853 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 15:39:04,853 INFO L82 PathProgramCache]: Analyzing trace with hash -2037600517, now seen corresponding path program 1 times [2018-01-24 15:39:04,853 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 15:39:04,854 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:39:04,855 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 15:39:04,855 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:39:04,855 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 15:39:04,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 15:39:04,870 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 15:39:04,905 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 15:39:04,905 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 15:39:04,906 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 15:39:04,906 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 15:39:04,906 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 15:39:04,906 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 15:39:04,907 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 15:39:04,907 INFO L87 Difference]: Start difference. First operand 176 states and 203 transitions. Second operand 4 states. [2018-01-24 15:39:05,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 15:39:05,026 INFO L93 Difference]: Finished difference Result 192 states and 219 transitions. [2018-01-24 15:39:05,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 15:39:05,026 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2018-01-24 15:39:05,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 15:39:05,027 INFO L225 Difference]: With dead ends: 192 [2018-01-24 15:39:05,027 INFO L226 Difference]: Without dead ends: 189 [2018-01-24 15:39:05,028 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 15:39:05,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2018-01-24 15:39:05,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 177. [2018-01-24 15:39:05,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2018-01-24 15:39:05,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 206 transitions. [2018-01-24 15:39:05,038 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 206 transitions. Word has length 17 [2018-01-24 15:39:05,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 15:39:05,038 INFO L432 AbstractCegarLoop]: Abstraction has 177 states and 206 transitions. [2018-01-24 15:39:05,038 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 15:39:05,039 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 206 transitions. [2018-01-24 15:39:05,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-01-24 15:39:05,039 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 15:39:05,039 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 15:39:05,040 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 15:39:05,040 INFO L82 PathProgramCache]: Analyzing trace with hash -2037600516, now seen corresponding path program 1 times [2018-01-24 15:39:05,040 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 15:39:05,041 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:39:05,041 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 15:39:05,041 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:39:05,041 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 15:39:05,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 15:39:05,054 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 15:39:05,108 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 15:39:05,109 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 15:39:05,109 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 15:39:05,109 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 15:39:05,109 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 15:39:05,109 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 15:39:05,110 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 15:39:05,110 INFO L87 Difference]: Start difference. First operand 177 states and 206 transitions. Second operand 4 states. [2018-01-24 15:39:05,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 15:39:05,254 INFO L93 Difference]: Finished difference Result 182 states and 209 transitions. [2018-01-24 15:39:05,255 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 15:39:05,255 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2018-01-24 15:39:05,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 15:39:05,256 INFO L225 Difference]: With dead ends: 182 [2018-01-24 15:39:05,256 INFO L226 Difference]: Without dead ends: 179 [2018-01-24 15:39:05,256 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 15:39:05,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-01-24 15:39:05,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 175. [2018-01-24 15:39:05,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-01-24 15:39:05,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 203 transitions. [2018-01-24 15:39:05,263 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 203 transitions. Word has length 17 [2018-01-24 15:39:05,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 15:39:05,264 INFO L432 AbstractCegarLoop]: Abstraction has 175 states and 203 transitions. [2018-01-24 15:39:05,264 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 15:39:05,264 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 203 transitions. [2018-01-24 15:39:05,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-24 15:39:05,265 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 15:39:05,265 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 15:39:05,265 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 15:39:05,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1339674347, now seen corresponding path program 1 times [2018-01-24 15:39:05,266 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 15:39:05,266 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:39:05,267 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 15:39:05,267 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:39:05,267 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 15:39:05,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 15:39:05,281 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 15:39:05,319 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 15:39:05,319 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 15:39:05,320 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 15:39:05,320 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 15:39:05,320 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 15:39:05,320 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 15:39:05,321 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 15:39:05,321 INFO L87 Difference]: Start difference. First operand 175 states and 203 transitions. Second operand 4 states. [2018-01-24 15:39:05,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 15:39:05,367 INFO L93 Difference]: Finished difference Result 179 states and 206 transitions. [2018-01-24 15:39:05,368 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 15:39:05,368 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2018-01-24 15:39:05,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 15:39:05,369 INFO L225 Difference]: With dead ends: 179 [2018-01-24 15:39:05,369 INFO L226 Difference]: Without dead ends: 176 [2018-01-24 15:39:05,370 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 15:39:05,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2018-01-24 15:39:05,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 175. [2018-01-24 15:39:05,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-01-24 15:39:05,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 202 transitions. [2018-01-24 15:39:05,378 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 202 transitions. Word has length 22 [2018-01-24 15:39:05,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 15:39:05,378 INFO L432 AbstractCegarLoop]: Abstraction has 175 states and 202 transitions. [2018-01-24 15:39:05,378 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 15:39:05,378 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 202 transitions. [2018-01-24 15:39:05,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-01-24 15:39:05,379 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 15:39:05,379 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 15:39:05,380 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 15:39:05,380 INFO L82 PathProgramCache]: Analyzing trace with hash -1419766941, now seen corresponding path program 1 times [2018-01-24 15:39:05,380 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 15:39:05,381 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:39:05,381 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 15:39:05,381 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:39:05,381 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 15:39:05,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 15:39:05,392 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 15:39:05,445 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 15:39:05,445 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 15:39:05,445 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 15:39:05,445 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 15:39:05,445 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 15:39:05,446 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 15:39:05,446 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-24 15:39:05,446 INFO L87 Difference]: Start difference. First operand 175 states and 202 transitions. Second operand 5 states. [2018-01-24 15:39:05,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 15:39:05,571 INFO L93 Difference]: Finished difference Result 194 states and 223 transitions. [2018-01-24 15:39:05,571 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 15:39:05,571 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2018-01-24 15:39:05,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 15:39:05,572 INFO L225 Difference]: With dead ends: 194 [2018-01-24 15:39:05,572 INFO L226 Difference]: Without dead ends: 190 [2018-01-24 15:39:05,573 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 15:39:05,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2018-01-24 15:39:05,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 174. [2018-01-24 15:39:05,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2018-01-24 15:39:05,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 202 transitions. [2018-01-24 15:39:05,579 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 202 transitions. Word has length 23 [2018-01-24 15:39:05,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 15:39:05,579 INFO L432 AbstractCegarLoop]: Abstraction has 174 states and 202 transitions. [2018-01-24 15:39:05,580 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 15:39:05,580 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 202 transitions. [2018-01-24 15:39:05,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-01-24 15:39:05,580 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 15:39:05,580 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 15:39:05,580 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 15:39:05,581 INFO L82 PathProgramCache]: Analyzing trace with hash -1419766940, now seen corresponding path program 1 times [2018-01-24 15:39:05,581 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 15:39:05,581 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:39:05,582 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 15:39:05,582 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:39:05,582 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 15:39:05,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 15:39:05,596 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 15:39:05,670 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 15:39:05,671 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 15:39:05,671 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 15:39:05,671 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 15:39:05,671 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 15:39:05,672 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 15:39:05,672 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 15:39:05,672 INFO L87 Difference]: Start difference. First operand 174 states and 202 transitions. Second operand 5 states. [2018-01-24 15:39:05,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 15:39:05,855 INFO L93 Difference]: Finished difference Result 196 states and 225 transitions. [2018-01-24 15:39:05,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 15:39:05,855 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2018-01-24 15:39:05,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 15:39:05,856 INFO L225 Difference]: With dead ends: 196 [2018-01-24 15:39:05,856 INFO L226 Difference]: Without dead ends: 194 [2018-01-24 15:39:05,856 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 15:39:05,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2018-01-24 15:39:05,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 176. [2018-01-24 15:39:05,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2018-01-24 15:39:05,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 203 transitions. [2018-01-24 15:39:05,862 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 203 transitions. Word has length 23 [2018-01-24 15:39:05,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 15:39:05,863 INFO L432 AbstractCegarLoop]: Abstraction has 176 states and 203 transitions. [2018-01-24 15:39:05,863 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 15:39:05,863 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 203 transitions. [2018-01-24 15:39:05,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-01-24 15:39:05,864 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 15:39:05,864 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 15:39:05,864 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 15:39:05,864 INFO L82 PathProgramCache]: Analyzing trace with hash 916114990, now seen corresponding path program 1 times [2018-01-24 15:39:05,865 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 15:39:05,865 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:39:05,866 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 15:39:05,866 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:39:05,866 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 15:39:05,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 15:39:05,875 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 15:39:05,907 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 15:39:05,907 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 15:39:05,907 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 15:39:05,907 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 15:39:05,908 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-24 15:39:05,908 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-24 15:39:05,908 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-24 15:39:05,908 INFO L87 Difference]: Start difference. First operand 176 states and 203 transitions. Second operand 3 states. [2018-01-24 15:39:05,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 15:39:05,920 INFO L93 Difference]: Finished difference Result 344 states and 400 transitions. [2018-01-24 15:39:05,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-24 15:39:05,921 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2018-01-24 15:39:05,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 15:39:05,922 INFO L225 Difference]: With dead ends: 344 [2018-01-24 15:39:05,923 INFO L226 Difference]: Without dead ends: 178 [2018-01-24 15:39:05,924 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 15:39:05,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2018-01-24 15:39:05,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2018-01-24 15:39:05,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2018-01-24 15:39:05,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 205 transitions. [2018-01-24 15:39:05,932 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 205 transitions. Word has length 23 [2018-01-24 15:39:05,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 15:39:05,933 INFO L432 AbstractCegarLoop]: Abstraction has 178 states and 205 transitions. [2018-01-24 15:39:05,933 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-24 15:39:05,933 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 205 transitions. [2018-01-24 15:39:05,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-24 15:39:05,934 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 15:39:05,934 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 15:39:05,934 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 15:39:05,935 INFO L82 PathProgramCache]: Analyzing trace with hash -1108120181, now seen corresponding path program 1 times [2018-01-24 15:39:05,935 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 15:39:05,936 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:39:05,936 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 15:39:05,936 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:39:05,936 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 15:39:05,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 15:39:05,951 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 15:39:06,080 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 15:39:06,080 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 15:39:06,080 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-24 15:39:06,080 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 15:39:06,081 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-24 15:39:06,081 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-24 15:39:06,081 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-24 15:39:06,081 INFO L87 Difference]: Start difference. First operand 178 states and 205 transitions. Second operand 6 states. [2018-01-24 15:39:06,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 15:39:06,254 INFO L93 Difference]: Finished difference Result 389 states and 450 transitions. [2018-01-24 15:39:06,254 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-24 15:39:06,254 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2018-01-24 15:39:06,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 15:39:06,256 INFO L225 Difference]: With dead ends: 389 [2018-01-24 15:39:06,256 INFO L226 Difference]: Without dead ends: 221 [2018-01-24 15:39:06,257 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 15:39:06,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2018-01-24 15:39:06,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 194. [2018-01-24 15:39:06,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2018-01-24 15:39:06,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 226 transitions. [2018-01-24 15:39:06,264 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 226 transitions. Word has length 25 [2018-01-24 15:39:06,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 15:39:06,264 INFO L432 AbstractCegarLoop]: Abstraction has 194 states and 226 transitions. [2018-01-24 15:39:06,264 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-24 15:39:06,265 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 226 transitions. [2018-01-24 15:39:06,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-01-24 15:39:06,265 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 15:39:06,265 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 15:39:06,266 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 15:39:06,266 INFO L82 PathProgramCache]: Analyzing trace with hash 561139669, now seen corresponding path program 1 times [2018-01-24 15:39:06,266 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 15:39:06,267 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:39:06,267 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 15:39:06,267 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:39:06,267 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 15:39:06,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 15:39:06,283 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 15:39:06,506 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 15:39:06,507 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 15:39:06,507 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-01-24 15:39:06,507 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 15:39:06,507 INFO L409 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-01-24 15:39:06,507 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-01-24 15:39:06,507 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2018-01-24 15:39:06,507 INFO L87 Difference]: Start difference. First operand 194 states and 226 transitions. Second operand 12 states. [2018-01-24 15:39:07,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 15:39:07,235 INFO L93 Difference]: Finished difference Result 211 states and 246 transitions. [2018-01-24 15:39:07,236 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-24 15:39:07,236 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 26 [2018-01-24 15:39:07,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 15:39:07,237 INFO L225 Difference]: With dead ends: 211 [2018-01-24 15:39:07,237 INFO L226 Difference]: Without dead ends: 210 [2018-01-24 15:39:07,237 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=144, Invalid=408, Unknown=0, NotChecked=0, Total=552 [2018-01-24 15:39:07,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2018-01-24 15:39:07,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 195. [2018-01-24 15:39:07,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-01-24 15:39:07,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 228 transitions. [2018-01-24 15:39:07,245 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 228 transitions. Word has length 26 [2018-01-24 15:39:07,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 15:39:07,245 INFO L432 AbstractCegarLoop]: Abstraction has 195 states and 228 transitions. [2018-01-24 15:39:07,245 INFO L433 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-01-24 15:39:07,245 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 228 transitions. [2018-01-24 15:39:07,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-01-24 15:39:07,246 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 15:39:07,246 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 15:39:07,246 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 15:39:07,246 INFO L82 PathProgramCache]: Analyzing trace with hash 561139670, now seen corresponding path program 1 times [2018-01-24 15:39:07,247 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 15:39:07,247 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:39:07,247 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 15:39:07,248 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:39:07,248 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 15:39:07,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 15:39:07,266 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 15:39:07,693 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 15:39:07,693 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 15:39:07,693 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-01-24 15:39:07,693 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 15:39:07,694 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-01-24 15:39:07,694 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-01-24 15:39:07,694 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2018-01-24 15:39:07,695 INFO L87 Difference]: Start difference. First operand 195 states and 228 transitions. Second operand 13 states. [2018-01-24 15:39:08,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 15:39:08,497 INFO L93 Difference]: Finished difference Result 266 states and 294 transitions. [2018-01-24 15:39:08,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-01-24 15:39:08,497 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 26 [2018-01-24 15:39:08,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 15:39:08,498 INFO L225 Difference]: With dead ends: 266 [2018-01-24 15:39:08,499 INFO L226 Difference]: Without dead ends: 263 [2018-01-24 15:39:08,499 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 15:39:08,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2018-01-24 15:39:08,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 199. [2018-01-24 15:39:08,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-01-24 15:39:08,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 233 transitions. [2018-01-24 15:39:08,509 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 233 transitions. Word has length 26 [2018-01-24 15:39:08,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 15:39:08,510 INFO L432 AbstractCegarLoop]: Abstraction has 199 states and 233 transitions. [2018-01-24 15:39:08,510 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-01-24 15:39:08,510 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 233 transitions. [2018-01-24 15:39:08,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-01-24 15:39:08,511 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 15:39:08,511 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 15:39:08,511 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 15:39:08,511 INFO L82 PathProgramCache]: Analyzing trace with hash -106162311, now seen corresponding path program 1 times [2018-01-24 15:39:08,511 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 15:39:08,512 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:39:08,512 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 15:39:08,512 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:39:08,513 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 15:39:08,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 15:39:08,523 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 15:39:08,557 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 15:39:08,557 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 15:39:08,557 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 15:39:08,557 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 15:39:08,558 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 15:39:08,558 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 15:39:08,558 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 15:39:08,558 INFO L87 Difference]: Start difference. First operand 199 states and 233 transitions. Second operand 5 states. [2018-01-24 15:39:08,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 15:39:08,767 INFO L93 Difference]: Finished difference Result 293 states and 346 transitions. [2018-01-24 15:39:08,767 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 15:39:08,767 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2018-01-24 15:39:08,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 15:39:08,769 INFO L225 Difference]: With dead ends: 293 [2018-01-24 15:39:08,769 INFO L226 Difference]: Without dead ends: 292 [2018-01-24 15:39:08,769 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 15:39:08,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2018-01-24 15:39:08,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 198. [2018-01-24 15:39:08,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2018-01-24 15:39:08,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 231 transitions. [2018-01-24 15:39:08,776 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 231 transitions. Word has length 26 [2018-01-24 15:39:08,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 15:39:08,776 INFO L432 AbstractCegarLoop]: Abstraction has 198 states and 231 transitions. [2018-01-24 15:39:08,776 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 15:39:08,776 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 231 transitions. [2018-01-24 15:39:08,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-01-24 15:39:08,777 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 15:39:08,777 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 15:39:08,777 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 15:39:08,777 INFO L82 PathProgramCache]: Analyzing trace with hash -106162310, now seen corresponding path program 1 times [2018-01-24 15:39:08,777 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 15:39:08,778 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:39:08,778 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 15:39:08,778 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:39:08,778 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 15:39:08,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 15:39:08,787 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 15:39:08,896 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 15:39:08,896 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 15:39:08,896 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 15:39:08,896 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 15:39:08,897 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 15:39:08,897 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 15:39:08,897 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 15:39:08,897 INFO L87 Difference]: Start difference. First operand 198 states and 231 transitions. Second operand 5 states. [2018-01-24 15:39:09,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 15:39:09,258 INFO L93 Difference]: Finished difference Result 282 states and 334 transitions. [2018-01-24 15:39:09,258 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 15:39:09,258 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2018-01-24 15:39:09,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 15:39:09,260 INFO L225 Difference]: With dead ends: 282 [2018-01-24 15:39:09,260 INFO L226 Difference]: Without dead ends: 281 [2018-01-24 15:39:09,261 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 15:39:09,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2018-01-24 15:39:09,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 197. [2018-01-24 15:39:09,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-01-24 15:39:09,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 229 transitions. [2018-01-24 15:39:09,274 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 229 transitions. Word has length 26 [2018-01-24 15:39:09,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 15:39:09,274 INFO L432 AbstractCegarLoop]: Abstraction has 197 states and 229 transitions. [2018-01-24 15:39:09,274 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 15:39:09,274 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 229 transitions. [2018-01-24 15:39:09,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-24 15:39:09,275 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 15:39:09,275 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 15:39:09,275 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 15:39:09,275 INFO L82 PathProgramCache]: Analyzing trace with hash -1585416537, now seen corresponding path program 1 times [2018-01-24 15:39:09,275 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 15:39:09,276 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:39:09,276 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 15:39:09,276 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:39:09,276 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 15:39:09,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 15:39:09,287 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 15:39:09,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 15:39:09,409 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 15:39:09,409 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-24 15:39:09,409 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 15:39:09,409 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-24 15:39:09,409 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-24 15:39:09,410 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-01-24 15:39:09,410 INFO L87 Difference]: Start difference. First operand 197 states and 229 transitions. Second operand 9 states. [2018-01-24 15:39:09,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 15:39:09,897 INFO L93 Difference]: Finished difference Result 244 states and 286 transitions. [2018-01-24 15:39:09,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-24 15:39:09,897 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2018-01-24 15:39:09,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 15:39:09,898 INFO L225 Difference]: With dead ends: 244 [2018-01-24 15:39:09,898 INFO L226 Difference]: Without dead ends: 243 [2018-01-24 15:39:09,899 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2018-01-24 15:39:09,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-01-24 15:39:09,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 196. [2018-01-24 15:39:09,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2018-01-24 15:39:09,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 227 transitions. [2018-01-24 15:39:09,905 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 227 transitions. Word has length 29 [2018-01-24 15:39:09,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 15:39:09,905 INFO L432 AbstractCegarLoop]: Abstraction has 196 states and 227 transitions. [2018-01-24 15:39:09,906 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-24 15:39:09,906 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 227 transitions. [2018-01-24 15:39:09,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-24 15:39:09,906 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 15:39:09,907 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 15:39:09,907 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 15:39:09,907 INFO L82 PathProgramCache]: Analyzing trace with hash -1585416536, now seen corresponding path program 1 times [2018-01-24 15:39:09,907 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 15:39:09,908 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:39:09,908 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 15:39:09,908 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:39:09,908 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 15:39:09,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 15:39:09,917 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 15:39:10,031 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 15:39:10,031 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 15:39:10,031 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-24 15:39:10,031 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 15:39:10,032 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-24 15:39:10,032 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-24 15:39:10,032 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-01-24 15:39:10,032 INFO L87 Difference]: Start difference. First operand 196 states and 227 transitions. Second operand 9 states. [2018-01-24 15:39:10,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 15:39:10,473 INFO L93 Difference]: Finished difference Result 243 states and 284 transitions. [2018-01-24 15:39:10,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-24 15:39:10,474 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2018-01-24 15:39:10,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 15:39:10,474 INFO L225 Difference]: With dead ends: 243 [2018-01-24 15:39:10,475 INFO L226 Difference]: Without dead ends: 242 [2018-01-24 15:39:10,475 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2018-01-24 15:39:10,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2018-01-24 15:39:10,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 195. [2018-01-24 15:39:10,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-01-24 15:39:10,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 225 transitions. [2018-01-24 15:39:10,485 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 225 transitions. Word has length 29 [2018-01-24 15:39:10,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 15:39:10,485 INFO L432 AbstractCegarLoop]: Abstraction has 195 states and 225 transitions. [2018-01-24 15:39:10,485 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-24 15:39:10,485 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 225 transitions. [2018-01-24 15:39:10,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-24 15:39:10,486 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 15:39:10,486 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 15:39:10,486 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 15:39:10,486 INFO L82 PathProgramCache]: Analyzing trace with hash 2109118679, now seen corresponding path program 1 times [2018-01-24 15:39:10,486 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 15:39:10,487 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:39:10,487 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 15:39:10,487 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:39:10,487 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 15:39:10,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 15:39:10,497 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 15:39:10,544 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 15:39:10,544 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 15:39:10,544 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 15:39:10,544 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 15:39:10,545 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 15:39:10,545 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 15:39:10,545 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 15:39:10,545 INFO L87 Difference]: Start difference. First operand 195 states and 225 transitions. Second operand 4 states. [2018-01-24 15:39:10,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 15:39:10,736 INFO L93 Difference]: Finished difference Result 212 states and 243 transitions. [2018-01-24 15:39:10,736 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 15:39:10,736 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-01-24 15:39:10,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 15:39:10,737 INFO L225 Difference]: With dead ends: 212 [2018-01-24 15:39:10,737 INFO L226 Difference]: Without dead ends: 211 [2018-01-24 15:39:10,738 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 15:39:10,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-01-24 15:39:10,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 194. [2018-01-24 15:39:10,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2018-01-24 15:39:10,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 224 transitions. [2018-01-24 15:39:10,747 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 224 transitions. Word has length 30 [2018-01-24 15:39:10,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 15:39:10,747 INFO L432 AbstractCegarLoop]: Abstraction has 194 states and 224 transitions. [2018-01-24 15:39:10,748 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 15:39:10,748 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 224 transitions. [2018-01-24 15:39:10,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-24 15:39:10,748 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 15:39:10,748 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 15:39:10,748 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 15:39:10,749 INFO L82 PathProgramCache]: Analyzing trace with hash 2109118680, now seen corresponding path program 1 times [2018-01-24 15:39:10,749 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 15:39:10,750 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:39:10,750 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 15:39:10,750 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:39:10,750 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 15:39:10,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 15:39:10,760 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 15:39:10,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 15:39:10,826 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 15:39:10,826 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 15:39:10,827 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 15:39:10,827 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 15:39:10,827 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 15:39:10,827 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 15:39:10,827 INFO L87 Difference]: Start difference. First operand 194 states and 224 transitions. Second operand 4 states. [2018-01-24 15:39:11,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 15:39:11,026 INFO L93 Difference]: Finished difference Result 241 states and 274 transitions. [2018-01-24 15:39:11,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 15:39:11,026 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-01-24 15:39:11,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 15:39:11,027 INFO L225 Difference]: With dead ends: 241 [2018-01-24 15:39:11,028 INFO L226 Difference]: Without dead ends: 239 [2018-01-24 15:39:11,028 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 15:39:11,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2018-01-24 15:39:11,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 192. [2018-01-24 15:39:11,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2018-01-24 15:39:11,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 222 transitions. [2018-01-24 15:39:11,037 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 222 transitions. Word has length 30 [2018-01-24 15:39:11,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 15:39:11,037 INFO L432 AbstractCegarLoop]: Abstraction has 192 states and 222 transitions. [2018-01-24 15:39:11,037 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 15:39:11,037 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 222 transitions. [2018-01-24 15:39:11,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-24 15:39:11,038 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 15:39:11,038 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 15:39:11,038 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 15:39:11,038 INFO L82 PathProgramCache]: Analyzing trace with hash -160241763, now seen corresponding path program 1 times [2018-01-24 15:39:11,038 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 15:39:11,039 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:39:11,039 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 15:39:11,039 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:39:11,040 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 15:39:11,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 15:39:11,049 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 15:39:11,077 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 15:39:11,077 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 15:39:11,077 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 15:39:11,077 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 15:39:11,078 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 15:39:11,078 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 15:39:11,078 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 15:39:11,078 INFO L87 Difference]: Start difference. First operand 192 states and 222 transitions. Second operand 5 states. [2018-01-24 15:39:11,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 15:39:11,321 INFO L93 Difference]: Finished difference Result 284 states and 331 transitions. [2018-01-24 15:39:11,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 15:39:11,321 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2018-01-24 15:39:11,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 15:39:11,322 INFO L225 Difference]: With dead ends: 284 [2018-01-24 15:39:11,322 INFO L226 Difference]: Without dead ends: 283 [2018-01-24 15:39:11,323 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 15:39:11,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2018-01-24 15:39:11,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 191. [2018-01-24 15:39:11,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-01-24 15:39:11,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 220 transitions. [2018-01-24 15:39:11,329 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 220 transitions. Word has length 30 [2018-01-24 15:39:11,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 15:39:11,330 INFO L432 AbstractCegarLoop]: Abstraction has 191 states and 220 transitions. [2018-01-24 15:39:11,330 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 15:39:11,330 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 220 transitions. [2018-01-24 15:39:11,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-24 15:39:11,330 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 15:39:11,330 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 15:39:11,330 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 15:39:11,330 INFO L82 PathProgramCache]: Analyzing trace with hash -160241762, now seen corresponding path program 1 times [2018-01-24 15:39:11,331 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 15:39:11,331 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:39:11,331 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 15:39:11,331 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:39:11,331 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 15:39:11,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 15:39:11,340 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 15:39:11,411 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 15:39:11,411 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 15:39:11,411 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 15:39:11,411 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 15:39:11,411 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 15:39:11,412 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 15:39:11,412 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 15:39:11,412 INFO L87 Difference]: Start difference. First operand 191 states and 220 transitions. Second operand 5 states. [2018-01-24 15:39:11,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 15:39:11,684 INFO L93 Difference]: Finished difference Result 273 states and 319 transitions. [2018-01-24 15:39:11,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 15:39:11,684 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2018-01-24 15:39:11,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 15:39:11,686 INFO L225 Difference]: With dead ends: 273 [2018-01-24 15:39:11,686 INFO L226 Difference]: Without dead ends: 272 [2018-01-24 15:39:11,686 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 15:39:11,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2018-01-24 15:39:11,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 190. [2018-01-24 15:39:11,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2018-01-24 15:39:11,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 218 transitions. [2018-01-24 15:39:11,695 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 218 transitions. Word has length 30 [2018-01-24 15:39:11,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 15:39:11,695 INFO L432 AbstractCegarLoop]: Abstraction has 190 states and 218 transitions. [2018-01-24 15:39:11,695 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 15:39:11,695 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 218 transitions. [2018-01-24 15:39:11,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-01-24 15:39:11,696 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 15:39:11,696 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 15:39:11,696 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 15:39:11,696 INFO L82 PathProgramCache]: Analyzing trace with hash 958169774, now seen corresponding path program 1 times [2018-01-24 15:39:11,696 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 15:39:11,697 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:39:11,697 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 15:39:11,697 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:39:11,697 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 15:39:11,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 15:39:11,708 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 15:39:11,754 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 15:39:11,754 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 15:39:11,755 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 15:39:11,755 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 15:39:11,755 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 15:39:11,755 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 15:39:11,755 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-24 15:39:11,756 INFO L87 Difference]: Start difference. First operand 190 states and 218 transitions. Second operand 4 states. [2018-01-24 15:39:11,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 15:39:11,869 INFO L93 Difference]: Finished difference Result 194 states and 223 transitions. [2018-01-24 15:39:11,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 15:39:11,872 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2018-01-24 15:39:11,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 15:39:11,873 INFO L225 Difference]: With dead ends: 194 [2018-01-24 15:39:11,873 INFO L226 Difference]: Without dead ends: 187 [2018-01-24 15:39:11,873 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 15:39:11,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-01-24 15:39:11,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 182. [2018-01-24 15:39:11,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2018-01-24 15:39:11,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 210 transitions. [2018-01-24 15:39:11,882 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 210 transitions. Word has length 31 [2018-01-24 15:39:11,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 15:39:11,882 INFO L432 AbstractCegarLoop]: Abstraction has 182 states and 210 transitions. [2018-01-24 15:39:11,882 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 15:39:11,882 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 210 transitions. [2018-01-24 15:39:11,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-01-24 15:39:11,883 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 15:39:11,883 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 15:39:11,883 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 15:39:11,883 INFO L82 PathProgramCache]: Analyzing trace with hash 53737817, now seen corresponding path program 1 times [2018-01-24 15:39:11,884 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 15:39:11,884 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:39:11,884 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 15:39:11,885 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:39:11,885 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 15:39:11,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 15:39:11,895 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 15:39:11,939 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 15:39:11,939 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 15:39:11,940 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 15:39:11,940 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 15:39:11,940 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 15:39:11,940 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 15:39:11,940 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 15:39:11,940 INFO L87 Difference]: Start difference. First operand 182 states and 210 transitions. Second operand 4 states. [2018-01-24 15:39:12,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 15:39:12,044 INFO L93 Difference]: Finished difference Result 191 states and 220 transitions. [2018-01-24 15:39:12,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 15:39:12,045 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2018-01-24 15:39:12,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 15:39:12,046 INFO L225 Difference]: With dead ends: 191 [2018-01-24 15:39:12,046 INFO L226 Difference]: Without dead ends: 190 [2018-01-24 15:39:12,047 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 15:39:12,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2018-01-24 15:39:12,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 181. [2018-01-24 15:39:12,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-01-24 15:39:12,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 209 transitions. [2018-01-24 15:39:12,056 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 209 transitions. Word has length 32 [2018-01-24 15:39:12,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 15:39:12,057 INFO L432 AbstractCegarLoop]: Abstraction has 181 states and 209 transitions. [2018-01-24 15:39:12,057 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 15:39:12,057 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 209 transitions. [2018-01-24 15:39:12,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-01-24 15:39:12,058 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 15:39:12,058 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 15:39:12,058 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 15:39:12,058 INFO L82 PathProgramCache]: Analyzing trace with hash 53737818, now seen corresponding path program 1 times [2018-01-24 15:39:12,058 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 15:39:12,060 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:39:12,060 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 15:39:12,060 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:39:12,060 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 15:39:12,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 15:39:12,072 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 15:39:12,111 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 15:39:12,112 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 15:39:12,112 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 15:39:12,112 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 15:39:12,130 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 15:39:12,131 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 15:39:12,131 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 15:39:12,131 INFO L87 Difference]: Start difference. First operand 181 states and 209 transitions. Second operand 4 states. [2018-01-24 15:39:12,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 15:39:12,333 INFO L93 Difference]: Finished difference Result 219 states and 249 transitions. [2018-01-24 15:39:12,333 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 15:39:12,333 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2018-01-24 15:39:12,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 15:39:12,335 INFO L225 Difference]: With dead ends: 219 [2018-01-24 15:39:12,335 INFO L226 Difference]: Without dead ends: 217 [2018-01-24 15:39:12,335 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 15:39:12,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2018-01-24 15:39:12,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 179. [2018-01-24 15:39:12,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-01-24 15:39:12,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 207 transitions. [2018-01-24 15:39:12,343 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 207 transitions. Word has length 32 [2018-01-24 15:39:12,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 15:39:12,344 INFO L432 AbstractCegarLoop]: Abstraction has 179 states and 207 transitions. [2018-01-24 15:39:12,344 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 15:39:12,344 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 207 transitions. [2018-01-24 15:39:12,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-01-24 15:39:12,344 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 15:39:12,344 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 15:39:12,345 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 15:39:12,345 INFO L82 PathProgramCache]: Analyzing trace with hash 611367904, now seen corresponding path program 1 times [2018-01-24 15:39:12,345 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 15:39:12,346 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:39:12,346 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 15:39:12,346 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:39:12,346 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 15:39:12,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 15:39:12,357 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 15:39:12,530 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 15:39:12,531 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 15:39:12,531 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-01-24 15:39:12,531 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 15:39:12,531 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-24 15:39:12,532 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-24 15:39:12,532 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-01-24 15:39:12,532 INFO L87 Difference]: Start difference. First operand 179 states and 207 transitions. Second operand 10 states. [2018-01-24 15:39:12,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 15:39:12,994 INFO L93 Difference]: Finished difference Result 228 states and 265 transitions. [2018-01-24 15:39:12,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-24 15:39:12,994 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 32 [2018-01-24 15:39:12,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 15:39:12,995 INFO L225 Difference]: With dead ends: 228 [2018-01-24 15:39:12,995 INFO L226 Difference]: Without dead ends: 227 [2018-01-24 15:39:12,995 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2018-01-24 15:39:12,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-01-24 15:39:13,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 178. [2018-01-24 15:39:13,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2018-01-24 15:39:13,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 205 transitions. [2018-01-24 15:39:13,000 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 205 transitions. Word has length 32 [2018-01-24 15:39:13,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 15:39:13,001 INFO L432 AbstractCegarLoop]: Abstraction has 178 states and 205 transitions. [2018-01-24 15:39:13,001 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-24 15:39:13,001 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 205 transitions. [2018-01-24 15:39:13,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-01-24 15:39:13,001 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 15:39:13,001 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 15:39:13,001 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 15:39:13,001 INFO L82 PathProgramCache]: Analyzing trace with hash 611367905, now seen corresponding path program 1 times [2018-01-24 15:39:13,002 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 15:39:13,002 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:39:13,002 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 15:39:13,002 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:39:13,002 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 15:39:13,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 15:39:13,011 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 15:39:13,204 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 15:39:13,204 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 15:39:13,204 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-01-24 15:39:13,204 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 15:39:13,204 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-24 15:39:13,204 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-24 15:39:13,205 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-01-24 15:39:13,205 INFO L87 Difference]: Start difference. First operand 178 states and 205 transitions. Second operand 10 states. [2018-01-24 15:39:13,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 15:39:13,601 INFO L93 Difference]: Finished difference Result 223 states and 258 transitions. [2018-01-24 15:39:13,601 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-01-24 15:39:13,601 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 32 [2018-01-24 15:39:13,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 15:39:13,602 INFO L225 Difference]: With dead ends: 223 [2018-01-24 15:39:13,602 INFO L226 Difference]: Without dead ends: 222 [2018-01-24 15:39:13,602 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 15:39:13,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2018-01-24 15:39:13,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 177. [2018-01-24 15:39:13,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2018-01-24 15:39:13,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 203 transitions. [2018-01-24 15:39:13,608 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 203 transitions. Word has length 32 [2018-01-24 15:39:13,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 15:39:13,608 INFO L432 AbstractCegarLoop]: Abstraction has 177 states and 203 transitions. [2018-01-24 15:39:13,608 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-24 15:39:13,608 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 203 transitions. [2018-01-24 15:39:13,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-01-24 15:39:13,609 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 15:39:13,609 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 15:39:13,609 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 15:39:13,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1665872513, now seen corresponding path program 1 times [2018-01-24 15:39:13,609 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 15:39:13,610 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:39:13,610 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 15:39:13,610 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:39:13,610 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 15:39:13,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 15:39:13,620 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 15:39:13,714 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 15:39:13,714 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 15:39:13,714 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 15:39:13,714 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 15:39:13,714 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 15:39:13,714 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 15:39:13,714 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-01-24 15:39:13,715 INFO L87 Difference]: Start difference. First operand 177 states and 203 transitions. Second operand 5 states. [2018-01-24 15:39:13,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 15:39:13,841 INFO L93 Difference]: Finished difference Result 214 states and 245 transitions. [2018-01-24 15:39:13,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 15:39:13,842 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2018-01-24 15:39:13,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 15:39:13,843 INFO L225 Difference]: With dead ends: 214 [2018-01-24 15:39:13,843 INFO L226 Difference]: Without dead ends: 207 [2018-01-24 15:39:13,843 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 15:39:13,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2018-01-24 15:39:13,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 155. [2018-01-24 15:39:13,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-01-24 15:39:13,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 175 transitions. [2018-01-24 15:39:13,848 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 175 transitions. Word has length 33 [2018-01-24 15:39:13,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 15:39:13,849 INFO L432 AbstractCegarLoop]: Abstraction has 155 states and 175 transitions. [2018-01-24 15:39:13,849 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 15:39:13,849 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 175 transitions. [2018-01-24 15:39:13,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-01-24 15:39:13,849 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 15:39:13,849 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 15:39:13,849 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 15:39:13,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1679203151, now seen corresponding path program 1 times [2018-01-24 15:39:13,849 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 15:39:13,850 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:39:13,850 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 15:39:13,850 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:39:13,850 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 15:39:13,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 15:39:13,859 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 15:39:13,992 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 15:39:13,993 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 15:39:13,993 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-24 15:39:13,994 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 34 with the following transitions: [2018-01-24 15:39:13,996 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 15:39:14,048 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-24 15:39:14,049 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