java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_precise.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-rb-cnstr_1_true-unreach-call_true-valid-memsafety.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-25 00:20:04,050 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-25 00:20:04,052 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-25 00:20:04,067 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-25 00:20:04,067 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-25 00:20:04,068 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-25 00:20:04,069 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-25 00:20:04,073 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-25 00:20:04,075 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-25 00:20:04,076 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-25 00:20:04,077 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-25 00:20:04,078 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-25 00:20:04,079 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-25 00:20:04,080 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-25 00:20:04,081 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-25 00:20:04,083 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-25 00:20:04,085 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-25 00:20:04,087 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-25 00:20:04,089 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-25 00:20:04,090 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-25 00:20:04,092 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-25 00:20:04,093 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-25 00:20:04,093 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-25 00:20:04,094 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-25 00:20:04,095 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-25 00:20:04,096 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-25 00:20:04,096 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-25 00:20:04,097 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-25 00:20:04,097 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-25 00:20:04,098 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-25 00:20:04,098 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-25 00:20:04,099 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_precise.epf [2018-01-25 00:20:04,107 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-25 00:20:04,107 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-25 00:20:04,108 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-25 00:20:04,108 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-25 00:20:04,108 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-25 00:20:04,109 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-25 00:20:04,109 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-25 00:20:04,109 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-25 00:20:04,109 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-25 00:20:04,109 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-25 00:20:04,110 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-25 00:20:04,110 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-25 00:20:04,110 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-25 00:20:04,110 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-25 00:20:04,110 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-25 00:20:04,110 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-25 00:20:04,110 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-25 00:20:04,111 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-25 00:20:04,111 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-25 00:20:04,111 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-25 00:20:04,111 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-25 00:20:04,111 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-25 00:20:04,111 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-25 00:20:04,112 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-25 00:20:04,112 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-25 00:20:04,112 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-25 00:20:04,112 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-25 00:20:04,112 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-25 00:20:04,112 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-25 00:20:04,113 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-25 00:20:04,113 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-25 00:20:04,113 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-25 00:20:04,113 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-25 00:20:04,113 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-25 00:20:04,114 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-25 00:20:04,114 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-25 00:20:04,146 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-25 00:20:04,158 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-25 00:20:04,161 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-25 00:20:04,162 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-25 00:20:04,163 INFO L276 PluginConnector]: CDTParser initialized [2018-01-25 00:20:04,163 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-rb-cnstr_1_true-unreach-call_true-valid-memsafety.i [2018-01-25 00:20:04,326 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-25 00:20:04,332 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-25 00:20:04,332 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-25 00:20:04,332 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-25 00:20:04,338 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-25 00:20:04,339 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 12:20:04" (1/1) ... [2018-01-25 00:20:04,341 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@321f72c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:20:04, skipping insertion in model container [2018-01-25 00:20:04,342 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 12:20:04" (1/1) ... [2018-01-25 00:20:04,356 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 00:20:04,397 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 00:20:04,525 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 00:20:04,550 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 00:20:04,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:20:04 WrapperNode [2018-01-25 00:20:04,560 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-25 00:20:04,561 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-25 00:20:04,561 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-25 00:20:04,561 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-25 00:20:04,573 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:20:04" (1/1) ... [2018-01-25 00:20:04,573 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:20:04" (1/1) ... [2018-01-25 00:20:04,586 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:20:04" (1/1) ... [2018-01-25 00:20:04,586 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:20:04" (1/1) ... [2018-01-25 00:20:04,592 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:20:04" (1/1) ... [2018-01-25 00:20:04,598 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:20:04" (1/1) ... [2018-01-25 00:20:04,600 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:20:04" (1/1) ... [2018-01-25 00:20:04,602 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-25 00:20:04,603 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-25 00:20:04,603 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-25 00:20:04,603 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-25 00:20:04,604 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:20:04" (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 [2018-01-25 00:20:04,650 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-25 00:20:04,650 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-25 00:20:04,650 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-25 00:20:04,651 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-25 00:20:04,651 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-25 00:20:04,651 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-25 00:20:04,651 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-25 00:20:04,651 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-25 00:20:04,652 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-25 00:20:04,652 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-25 00:20:04,652 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-25 00:20:04,652 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-25 00:20:04,652 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-25 00:20:04,652 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-25 00:20:04,653 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-25 00:20:04,653 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-25 00:20:04,653 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-25 00:20:05,170 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-25 00:20:05,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 12:20:05 BoogieIcfgContainer [2018-01-25 00:20:05,171 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-25 00:20:05,172 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-25 00:20:05,173 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-25 00:20:05,175 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-25 00:20:05,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.01 12:20:04" (1/3) ... [2018-01-25 00:20:05,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cec5dff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 12:20:05, skipping insertion in model container [2018-01-25 00:20:05,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:20:04" (2/3) ... [2018-01-25 00:20:05,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cec5dff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 12:20:05, skipping insertion in model container [2018-01-25 00:20:05,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 12:20:05" (3/3) ... [2018-01-25 00:20:05,179 INFO L105 eAbstractionObserver]: Analyzing ICFG dll-rb-cnstr_1_true-unreach-call_true-valid-memsafety.i [2018-01-25 00:20:05,186 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-25 00:20:05,194 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 61 error locations. [2018-01-25 00:20:05,245 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-25 00:20:05,245 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-25 00:20:05,245 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-25 00:20:05,246 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-25 00:20:05,246 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-25 00:20:05,246 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-25 00:20:05,246 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-25 00:20:05,246 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-25 00:20:05,247 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-25 00:20:05,267 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states. [2018-01-25 00:20:05,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-25 00:20:05,273 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:20:05,274 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:20:05,274 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr60EnsuresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:20:05,278 INFO L82 PathProgramCache]: Analyzing trace with hash 1532119549, now seen corresponding path program 1 times [2018-01-25 00:20:05,280 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:20:05,329 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:20:05,329 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:20:05,329 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:20:05,329 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:20:05,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:20:05,374 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:20:05,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:20:05,437 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:20:05,437 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 00:20:05,437 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:20:05,440 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 00:20:05,538 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 00:20:05,539 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 00:20:05,541 INFO L87 Difference]: Start difference. First operand 149 states. Second operand 4 states. [2018-01-25 00:20:05,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:20:05,822 INFO L93 Difference]: Finished difference Result 296 states and 366 transitions. [2018-01-25 00:20:05,822 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 00:20:05,824 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-25 00:20:05,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:20:05,834 INFO L225 Difference]: With dead ends: 296 [2018-01-25 00:20:05,834 INFO L226 Difference]: Without dead ends: 157 [2018-01-25 00:20:05,838 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 [2018-01-25 00:20:05,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-01-25 00:20:05,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 142. [2018-01-25 00:20:05,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2018-01-25 00:20:05,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 149 transitions. [2018-01-25 00:20:05,879 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 149 transitions. Word has length 8 [2018-01-25 00:20:05,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:20:05,879 INFO L432 AbstractCegarLoop]: Abstraction has 142 states and 149 transitions. [2018-01-25 00:20:05,880 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 00:20:05,880 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 149 transitions. [2018-01-25 00:20:05,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-25 00:20:05,880 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:20:05,880 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:20:05,880 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr60EnsuresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:20:05,880 INFO L82 PathProgramCache]: Analyzing trace with hash 1532119550, now seen corresponding path program 1 times [2018-01-25 00:20:05,881 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:20:05,882 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:20:05,882 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:20:05,882 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:20:05,882 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:20:05,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:20:05,898 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:20:05,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:20:05,990 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:20:05,990 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 00:20:05,990 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:20:05,992 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 00:20:05,992 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 00:20:05,992 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 00:20:05,993 INFO L87 Difference]: Start difference. First operand 142 states and 149 transitions. Second operand 4 states. [2018-01-25 00:20:06,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:20:06,160 INFO L93 Difference]: Finished difference Result 162 states and 168 transitions. [2018-01-25 00:20:06,160 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-25 00:20:06,160 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-25 00:20:06,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:20:06,162 INFO L225 Difference]: With dead ends: 162 [2018-01-25 00:20:06,162 INFO L226 Difference]: Without dead ends: 154 [2018-01-25 00:20:06,163 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 [2018-01-25 00:20:06,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2018-01-25 00:20:06,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 146. [2018-01-25 00:20:06,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2018-01-25 00:20:06,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 153 transitions. [2018-01-25 00:20:06,177 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 153 transitions. Word has length 8 [2018-01-25 00:20:06,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:20:06,177 INFO L432 AbstractCegarLoop]: Abstraction has 146 states and 153 transitions. [2018-01-25 00:20:06,178 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 00:20:06,178 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 153 transitions. [2018-01-25 00:20:06,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-01-25 00:20:06,178 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:20:06,179 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:20:06,179 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr60EnsuresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:20:06,179 INFO L82 PathProgramCache]: Analyzing trace with hash 579798922, now seen corresponding path program 1 times [2018-01-25 00:20:06,179 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:20:06,181 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:20:06,181 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:20:06,181 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:20:06,181 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:20:06,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:20:06,206 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:20:06,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:20:06,281 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:20:06,281 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 00:20:06,281 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:20:06,281 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 00:20:06,281 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 00:20:06,281 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 00:20:06,282 INFO L87 Difference]: Start difference. First operand 146 states and 153 transitions. Second operand 4 states. [2018-01-25 00:20:06,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:20:06,416 INFO L93 Difference]: Finished difference Result 165 states and 173 transitions. [2018-01-25 00:20:06,416 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 00:20:06,416 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2018-01-25 00:20:06,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:20:06,418 INFO L225 Difference]: With dead ends: 165 [2018-01-25 00:20:06,418 INFO L226 Difference]: Without dead ends: 149 [2018-01-25 00:20:06,419 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-25 00:20:06,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-01-25 00:20:06,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 134. [2018-01-25 00:20:06,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2018-01-25 00:20:06,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 143 transitions. [2018-01-25 00:20:06,431 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 143 transitions. Word has length 16 [2018-01-25 00:20:06,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:20:06,432 INFO L432 AbstractCegarLoop]: Abstraction has 134 states and 143 transitions. [2018-01-25 00:20:06,432 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 00:20:06,432 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 143 transitions. [2018-01-25 00:20:06,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-01-25 00:20:06,433 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:20:06,433 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:20:06,433 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr60EnsuresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:20:06,434 INFO L82 PathProgramCache]: Analyzing trace with hash 579798923, now seen corresponding path program 1 times [2018-01-25 00:20:06,434 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:20:06,435 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:20:06,436 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:20:06,436 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:20:06,436 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:20:06,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:20:06,478 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:20:06,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:20:06,607 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:20:06,607 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-25 00:20:06,607 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:20:06,607 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-25 00:20:06,607 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-25 00:20:06,608 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-01-25 00:20:06,608 INFO L87 Difference]: Start difference. First operand 134 states and 143 transitions. Second operand 7 states. [2018-01-25 00:20:06,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:20:06,953 INFO L93 Difference]: Finished difference Result 177 states and 187 transitions. [2018-01-25 00:20:06,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 00:20:06,953 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2018-01-25 00:20:06,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:20:06,955 INFO L225 Difference]: With dead ends: 177 [2018-01-25 00:20:06,955 INFO L226 Difference]: Without dead ends: 170 [2018-01-25 00:20:06,956 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-01-25 00:20:06,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2018-01-25 00:20:06,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 145. [2018-01-25 00:20:06,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-01-25 00:20:06,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 157 transitions. [2018-01-25 00:20:06,966 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 157 transitions. Word has length 16 [2018-01-25 00:20:06,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:20:06,967 INFO L432 AbstractCegarLoop]: Abstraction has 145 states and 157 transitions. [2018-01-25 00:20:06,967 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-25 00:20:06,967 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 157 transitions. [2018-01-25 00:20:06,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-25 00:20:06,968 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:20:06,968 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:20:06,968 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr60EnsuresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:20:06,969 INFO L82 PathProgramCache]: Analyzing trace with hash -1158984530, now seen corresponding path program 1 times [2018-01-25 00:20:06,969 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:20:06,970 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:20:06,971 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:20:06,971 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:20:06,971 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:20:06,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:20:06,990 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:20:07,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:20:07,075 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:20:07,075 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 00:20:07,075 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:20:07,075 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 00:20:07,076 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 00:20:07,076 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 00:20:07,076 INFO L87 Difference]: Start difference. First operand 145 states and 157 transitions. Second operand 5 states. [2018-01-25 00:20:07,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:20:07,320 INFO L93 Difference]: Finished difference Result 216 states and 235 transitions. [2018-01-25 00:20:07,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 00:20:07,320 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2018-01-25 00:20:07,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:20:07,322 INFO L225 Difference]: With dead ends: 216 [2018-01-25 00:20:07,322 INFO L226 Difference]: Without dead ends: 215 [2018-01-25 00:20:07,323 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 [2018-01-25 00:20:07,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2018-01-25 00:20:07,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 144. [2018-01-25 00:20:07,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2018-01-25 00:20:07,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 155 transitions. [2018-01-25 00:20:07,329 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 155 transitions. Word has length 18 [2018-01-25 00:20:07,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:20:07,330 INFO L432 AbstractCegarLoop]: Abstraction has 144 states and 155 transitions. [2018-01-25 00:20:07,330 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 00:20:07,330 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 155 transitions. [2018-01-25 00:20:07,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-25 00:20:07,330 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:20:07,330 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:20:07,330 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr60EnsuresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:20:07,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1158984531, now seen corresponding path program 1 times [2018-01-25 00:20:07,331 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:20:07,332 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:20:07,332 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:20:07,332 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:20:07,332 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:20:07,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:20:07,344 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:20:07,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:20:07,380 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:20:07,380 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 00:20:07,380 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:20:07,380 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 00:20:07,380 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 00:20:07,380 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 00:20:07,381 INFO L87 Difference]: Start difference. First operand 144 states and 155 transitions. Second operand 5 states. [2018-01-25 00:20:07,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:20:07,535 INFO L93 Difference]: Finished difference Result 192 states and 208 transitions. [2018-01-25 00:20:07,535 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 00:20:07,535 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2018-01-25 00:20:07,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:20:07,536 INFO L225 Difference]: With dead ends: 192 [2018-01-25 00:20:07,536 INFO L226 Difference]: Without dead ends: 191 [2018-01-25 00:20:07,536 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 [2018-01-25 00:20:07,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-01-25 00:20:07,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 143. [2018-01-25 00:20:07,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-01-25 00:20:07,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 153 transitions. [2018-01-25 00:20:07,543 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 153 transitions. Word has length 18 [2018-01-25 00:20:07,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:20:07,543 INFO L432 AbstractCegarLoop]: Abstraction has 143 states and 153 transitions. [2018-01-25 00:20:07,543 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 00:20:07,543 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 153 transitions. [2018-01-25 00:20:07,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-25 00:20:07,544 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:20:07,544 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] [2018-01-25 00:20:07,544 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr60EnsuresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:20:07,544 INFO L82 PathProgramCache]: Analyzing trace with hash -2048091345, now seen corresponding path program 1 times [2018-01-25 00:20:07,545 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:20:07,546 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:20:07,546 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:20:07,546 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:20:07,546 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:20:07,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:20:07,563 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:20:07,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:20:07,665 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:20:07,665 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-25 00:20:07,665 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:20:07,665 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-25 00:20:07,666 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-25 00:20:07,666 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-01-25 00:20:07,666 INFO L87 Difference]: Start difference. First operand 143 states and 153 transitions. Second operand 9 states. [2018-01-25 00:20:07,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:20:07,954 INFO L93 Difference]: Finished difference Result 157 states and 167 transitions. [2018-01-25 00:20:07,955 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-25 00:20:07,955 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2018-01-25 00:20:07,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:20:07,956 INFO L225 Difference]: With dead ends: 157 [2018-01-25 00:20:07,956 INFO L226 Difference]: Without dead ends: 156 [2018-01-25 00:20:07,956 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2018-01-25 00:20:07,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2018-01-25 00:20:07,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 142. [2018-01-25 00:20:07,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2018-01-25 00:20:07,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 152 transitions. [2018-01-25 00:20:07,961 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 152 transitions. Word has length 22 [2018-01-25 00:20:07,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:20:07,961 INFO L432 AbstractCegarLoop]: Abstraction has 142 states and 152 transitions. [2018-01-25 00:20:07,962 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-25 00:20:07,962 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 152 transitions. [2018-01-25 00:20:07,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-25 00:20:07,962 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:20:07,962 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] [2018-01-25 00:20:07,962 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr60EnsuresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:20:07,963 INFO L82 PathProgramCache]: Analyzing trace with hash -2048091344, now seen corresponding path program 1 times [2018-01-25 00:20:07,963 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:20:07,964 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:20:07,964 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:20:07,964 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:20:07,964 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:20:07,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:20:07,980 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:20:08,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:20:08,135 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:20:08,135 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-01-25 00:20:08,135 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:20:08,136 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-25 00:20:08,136 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-25 00:20:08,136 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-01-25 00:20:08,136 INFO L87 Difference]: Start difference. First operand 142 states and 152 transitions. Second operand 10 states. [2018-01-25 00:20:08,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:20:08,816 INFO L93 Difference]: Finished difference Result 183 states and 194 transitions. [2018-01-25 00:20:08,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-25 00:20:08,816 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2018-01-25 00:20:08,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:20:08,817 INFO L225 Difference]: With dead ends: 183 [2018-01-25 00:20:08,817 INFO L226 Difference]: Without dead ends: 172 [2018-01-25 00:20:08,818 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=129, Invalid=291, Unknown=0, NotChecked=0, Total=420 [2018-01-25 00:20:08,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2018-01-25 00:20:08,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 147. [2018-01-25 00:20:08,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-01-25 00:20:08,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 157 transitions. [2018-01-25 00:20:08,825 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 157 transitions. Word has length 22 [2018-01-25 00:20:08,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:20:08,826 INFO L432 AbstractCegarLoop]: Abstraction has 147 states and 157 transitions. [2018-01-25 00:20:08,826 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-25 00:20:08,826 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 157 transitions. [2018-01-25 00:20:08,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-01-25 00:20:08,827 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:20:08,827 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:20:08,827 INFO L371 AbstractCegarLoop]: === Iteration 9 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr60EnsuresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:20:08,828 INFO L82 PathProgramCache]: Analyzing trace with hash -328401667, now seen corresponding path program 1 times [2018-01-25 00:20:08,828 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:20:08,829 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:20:08,829 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:20:08,829 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:20:08,829 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:20:08,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:20:08,840 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:20:08,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:20:08,884 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:20:08,884 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-25 00:20:08,885 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:20:08,885 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 00:20:08,885 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 00:20:08,885 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 00:20:08,886 INFO L87 Difference]: Start difference. First operand 147 states and 157 transitions. Second operand 5 states. [2018-01-25 00:20:09,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:20:09,031 INFO L93 Difference]: Finished difference Result 201 states and 215 transitions. [2018-01-25 00:20:09,032 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 00:20:09,032 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2018-01-25 00:20:09,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:20:09,033 INFO L225 Difference]: With dead ends: 201 [2018-01-25 00:20:09,033 INFO L226 Difference]: Without dead ends: 165 [2018-01-25 00:20:09,034 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-25 00:20:09,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2018-01-25 00:20:09,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 147. [2018-01-25 00:20:09,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-01-25 00:20:09,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 155 transitions. [2018-01-25 00:20:09,045 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 155 transitions. Word has length 28 [2018-01-25 00:20:09,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:20:09,045 INFO L432 AbstractCegarLoop]: Abstraction has 147 states and 155 transitions. [2018-01-25 00:20:09,045 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 00:20:09,046 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 155 transitions. [2018-01-25 00:20:09,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-25 00:20:09,047 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:20:09,047 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] [2018-01-25 00:20:09,047 INFO L371 AbstractCegarLoop]: === Iteration 10 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr60EnsuresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:20:09,047 INFO L82 PathProgramCache]: Analyzing trace with hash 143362465, now seen corresponding path program 1 times [2018-01-25 00:20:09,047 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:20:09,049 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:20:09,049 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:20:09,049 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:20:09,049 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:20:09,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:20:09,064 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:20:09,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:20:09,127 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:20:09,127 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 00:20:09,127 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:20:09,128 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 00:20:09,128 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 00:20:09,128 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 00:20:09,128 INFO L87 Difference]: Start difference. First operand 147 states and 155 transitions. Second operand 5 states. [2018-01-25 00:20:09,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:20:09,357 INFO L93 Difference]: Finished difference Result 219 states and 233 transitions. [2018-01-25 00:20:09,357 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 00:20:09,357 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2018-01-25 00:20:09,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:20:09,358 INFO L225 Difference]: With dead ends: 219 [2018-01-25 00:20:09,358 INFO L226 Difference]: Without dead ends: 218 [2018-01-25 00:20:09,359 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 [2018-01-25 00:20:09,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2018-01-25 00:20:09,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 146. [2018-01-25 00:20:09,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2018-01-25 00:20:09,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 154 transitions. [2018-01-25 00:20:09,366 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 154 transitions. Word has length 29 [2018-01-25 00:20:09,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:20:09,366 INFO L432 AbstractCegarLoop]: Abstraction has 146 states and 154 transitions. [2018-01-25 00:20:09,366 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 00:20:09,367 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 154 transitions. [2018-01-25 00:20:09,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-25 00:20:09,368 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:20:09,368 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:20:09,368 INFO L371 AbstractCegarLoop]: === Iteration 11 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr60EnsuresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:20:09,368 INFO L82 PathProgramCache]: Analyzing trace with hash 143362466, now seen corresponding path program 1 times [2018-01-25 00:20:09,368 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:20:09,369 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:20:09,370 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:20:09,370 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:20:09,370 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:20:09,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:20:09,383 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:20:09,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:20:09,514 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:20:09,514 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 00:20:09,514 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:20:09,514 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 00:20:09,514 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 00:20:09,514 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 00:20:09,515 INFO L87 Difference]: Start difference. First operand 146 states and 154 transitions. Second operand 5 states. [2018-01-25 00:20:09,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:20:09,720 INFO L93 Difference]: Finished difference Result 244 states and 259 transitions. [2018-01-25 00:20:09,721 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 00:20:09,721 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2018-01-25 00:20:09,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:20:09,722 INFO L225 Difference]: With dead ends: 244 [2018-01-25 00:20:09,722 INFO L226 Difference]: Without dead ends: 243 [2018-01-25 00:20:09,722 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 [2018-01-25 00:20:09,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-01-25 00:20:09,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 145. [2018-01-25 00:20:09,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-01-25 00:20:09,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 153 transitions. [2018-01-25 00:20:09,727 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 153 transitions. Word has length 29 [2018-01-25 00:20:09,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:20:09,728 INFO L432 AbstractCegarLoop]: Abstraction has 145 states and 153 transitions. [2018-01-25 00:20:09,728 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 00:20:09,728 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 153 transitions. [2018-01-25 00:20:09,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-01-25 00:20:09,729 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:20:09,729 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] [2018-01-25 00:20:09,729 INFO L371 AbstractCegarLoop]: === Iteration 12 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr60EnsuresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:20:09,730 INFO L82 PathProgramCache]: Analyzing trace with hash 1819547941, now seen corresponding path program 1 times [2018-01-25 00:20:09,730 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:20:09,731 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:20:09,731 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:20:09,731 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:20:09,731 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:20:09,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:20:09,738 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:20:09,949 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:20:09,950 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-25 00:20:09,950 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-25 00:20:09,951 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 32 with the following transitions: [2018-01-25 00:20:09,952 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [11], [15], [17], [20], [135], [139], [144], [148], [156], [157], [164], [168], [176], [182], [183], [184], [232], [234], [237], [287], [288], [292], [293], [294] [2018-01-25 00:20:09,994 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-25 00:20:09,994 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