java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-rb-cnstr_1_true-unreach-call_true-valid-memsafety.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 20:56:01,723 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 20:56:01,724 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 20:56:01,739 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 20:56:01,739 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 20:56:01,740 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 20:56:01,741 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 20:56:01,743 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 20:56:01,745 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 20:56:01,746 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 20:56:01,747 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 20:56:01,747 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 20:56:01,747 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 20:56:01,748 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 20:56:01,749 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 20:56:01,752 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 20:56:01,754 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 20:56:01,756 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 20:56:01,757 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 20:56:01,759 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 20:56:01,761 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-24 20:56:01,761 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-24 20:56:01,762 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-24 20:56:01,763 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-24 20:56:01,764 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-24 20:56:01,765 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-24 20:56:01,765 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-24 20:56:01,766 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-24 20:56:01,766 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-24 20:56:01,766 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 20:56:01,767 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 20:56:01,767 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf [2018-01-24 20:56:01,777 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 20:56:01,777 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 20:56:01,778 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 20:56:01,778 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 20:56:01,779 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 20:56:01,779 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-24 20:56:01,779 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 20:56:01,779 INFO L133 SettingsManager]: * Precise comparison operator=true [2018-01-24 20:56:01,779 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 20:56:01,780 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 20:56:01,780 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 20:56:01,780 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 20:56:01,780 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 20:56:01,781 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 20:56:01,781 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 20:56:01,781 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 20:56:01,781 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 20:56:01,781 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 20:56:01,782 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 20:56:01,782 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 20:56:01,782 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 20:56:01,782 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 20:56:01,782 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 20:56:01,782 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 20:56:01,783 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 20:56:01,783 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 20:56:01,783 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 20:56:01,783 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 20:56:01,783 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 20:56:01,784 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 20:56:01,784 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-24 20:56:01,784 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 20:56:01,784 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 20:56:01,784 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 20:56:01,784 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-24 20:56:01,785 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 20:56:01,786 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 20:56:01,821 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 20:56:01,834 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 20:56:01,838 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 20:56:01,840 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 20:56:01,840 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 20:56:01,841 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-rb-cnstr_1_true-unreach-call_true-valid-memsafety.i [2018-01-24 20:56:02,038 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 20:56:02,043 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 20:56:02,044 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 20:56:02,044 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 20:56:02,049 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 20:56:02,050 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 08:56:02" (1/1) ... [2018-01-24 20:56:02,053 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28ea857c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:56:02, skipping insertion in model container [2018-01-24 20:56:02,053 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 08:56:02" (1/1) ... [2018-01-24 20:56:02,067 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 20:56:02,109 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 20:56:02,233 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 20:56:02,255 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 20:56:02,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:56:02 WrapperNode [2018-01-24 20:56:02,263 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 20:56:02,263 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 20:56:02,263 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 20:56:02,264 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 20:56:02,275 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:56:02" (1/1) ... [2018-01-24 20:56:02,275 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:56:02" (1/1) ... [2018-01-24 20:56:02,284 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:56:02" (1/1) ... [2018-01-24 20:56:02,284 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:56:02" (1/1) ... [2018-01-24 20:56:02,290 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:56:02" (1/1) ... [2018-01-24 20:56:02,294 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:56:02" (1/1) ... [2018-01-24 20:56:02,295 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:56:02" (1/1) ... [2018-01-24 20:56:02,297 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 20:56:02,298 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 20:56:02,298 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 20:56:02,298 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 20:56:02,299 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:56:02" (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 20:56:02,354 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 20:56:02,354 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 20:56:02,354 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 20:56:02,354 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-24 20:56:02,354 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-24 20:56:02,355 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-24 20:56:02,355 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-24 20:56:02,355 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 20:56:02,355 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 20:56:02,355 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 20:56:02,355 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-24 20:56:02,356 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-24 20:56:02,356 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 20:56:02,356 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-24 20:56:02,356 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 20:56:02,356 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 20:56:02,356 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 20:56:02,920 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 20:56:02,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 08:56:02 BoogieIcfgContainer [2018-01-24 20:56:02,921 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 20:56:02,922 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-24 20:56:02,923 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-24 20:56:02,924 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-24 20:56:02,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.01 08:56:02" (1/3) ... [2018-01-24 20:56:02,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d17aa70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 08:56:02, skipping insertion in model container [2018-01-24 20:56:02,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:56:02" (2/3) ... [2018-01-24 20:56:02,927 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d17aa70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 08:56:02, skipping insertion in model container [2018-01-24 20:56:02,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 08:56:02" (3/3) ... [2018-01-24 20:56:02,929 INFO L105 eAbstractionObserver]: Analyzing ICFG dll-rb-cnstr_1_true-unreach-call_true-valid-memsafety.i [2018-01-24 20:56:02,936 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-24 20:56:02,944 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 61 error locations. [2018-01-24 20:56:03,005 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-24 20:56:03,005 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-24 20:56:03,005 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-24 20:56:03,005 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-24 20:56:03,006 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-24 20:56:03,006 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-24 20:56:03,006 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-24 20:56:03,006 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-24 20:56:03,007 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-24 20:56:03,035 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states. [2018-01-24 20:56:03,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-24 20:56:03,042 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:56:03,043 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:56:03,044 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]=== [2018-01-24 20:56:03,049 INFO L82 PathProgramCache]: Analyzing trace with hash 1532119549, now seen corresponding path program 1 times [2018-01-24 20:56:03,052 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:56:03,115 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:56:03,116 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:56:03,116 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:56:03,116 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:56:03,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:56:03,168 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:56:03,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:56:03,239 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:56:03,239 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 20:56:03,240 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:56:03,242 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 20:56:03,337 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 20:56:03,338 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 20:56:03,340 INFO L87 Difference]: Start difference. First operand 149 states. Second operand 4 states. [2018-01-24 20:56:03,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:56:03,559 INFO L93 Difference]: Finished difference Result 296 states and 366 transitions. [2018-01-24 20:56:03,559 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 20:56:03,561 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-24 20:56:03,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:56:03,571 INFO L225 Difference]: With dead ends: 296 [2018-01-24 20:56:03,571 INFO L226 Difference]: Without dead ends: 157 [2018-01-24 20:56:03,576 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:56:03,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-01-24 20:56:03,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 142. [2018-01-24 20:56:03,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2018-01-24 20:56:03,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 149 transitions. [2018-01-24 20:56:03,616 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 149 transitions. Word has length 8 [2018-01-24 20:56:03,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:56:03,616 INFO L432 AbstractCegarLoop]: Abstraction has 142 states and 149 transitions. [2018-01-24 20:56:03,616 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 20:56:03,617 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 149 transitions. [2018-01-24 20:56:03,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-24 20:56:03,617 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:56:03,617 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:56:03,617 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]=== [2018-01-24 20:56:03,618 INFO L82 PathProgramCache]: Analyzing trace with hash 1532119550, now seen corresponding path program 1 times [2018-01-24 20:56:03,618 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:56:03,619 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:56:03,620 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:56:03,620 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:56:03,620 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:56:03,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:56:03,636 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:56:03,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:56:03,716 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:56:03,716 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 20:56:03,716 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:56:03,718 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 20:56:03,718 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 20:56:03,718 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 20:56:03,718 INFO L87 Difference]: Start difference. First operand 142 states and 149 transitions. Second operand 4 states. [2018-01-24 20:56:03,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:56:03,889 INFO L93 Difference]: Finished difference Result 162 states and 168 transitions. [2018-01-24 20:56:03,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 20:56:03,889 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-24 20:56:03,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:56:03,891 INFO L225 Difference]: With dead ends: 162 [2018-01-24 20:56:03,891 INFO L226 Difference]: Without dead ends: 154 [2018-01-24 20:56:03,893 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:56:03,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2018-01-24 20:56:03,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 146. [2018-01-24 20:56:03,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2018-01-24 20:56:03,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 153 transitions. [2018-01-24 20:56:03,907 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 153 transitions. Word has length 8 [2018-01-24 20:56:03,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:56:03,908 INFO L432 AbstractCegarLoop]: Abstraction has 146 states and 153 transitions. [2018-01-24 20:56:03,908 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 20:56:03,908 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 153 transitions. [2018-01-24 20:56:03,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-01-24 20:56:03,909 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:56:03,909 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:56:03,909 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]=== [2018-01-24 20:56:03,909 INFO L82 PathProgramCache]: Analyzing trace with hash 579798922, now seen corresponding path program 1 times [2018-01-24 20:56:03,909 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:56:03,911 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:56:03,912 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:56:03,912 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:56:03,912 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:56:03,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:56:03,936 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:56:04,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:56:04,009 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:56:04,010 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 20:56:04,010 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:56:04,010 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 20:56:04,010 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 20:56:04,010 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 20:56:04,011 INFO L87 Difference]: Start difference. First operand 146 states and 153 transitions. Second operand 4 states. [2018-01-24 20:56:04,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:56:04,153 INFO L93 Difference]: Finished difference Result 165 states and 173 transitions. [2018-01-24 20:56:04,154 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 20:56:04,154 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2018-01-24 20:56:04,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:56:04,155 INFO L225 Difference]: With dead ends: 165 [2018-01-24 20:56:04,155 INFO L226 Difference]: Without dead ends: 149 [2018-01-24 20:56:04,156 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 [2018-01-24 20:56:04,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-01-24 20:56:04,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 134. [2018-01-24 20:56:04,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2018-01-24 20:56:04,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 143 transitions. [2018-01-24 20:56:04,167 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 143 transitions. Word has length 16 [2018-01-24 20:56:04,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:56:04,199 INFO L432 AbstractCegarLoop]: Abstraction has 134 states and 143 transitions. [2018-01-24 20:56:04,199 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 20:56:04,199 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 143 transitions. [2018-01-24 20:56:04,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-01-24 20:56:04,200 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:56:04,200 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:56:04,201 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]=== [2018-01-24 20:56:04,201 INFO L82 PathProgramCache]: Analyzing trace with hash 579798923, now seen corresponding path program 1 times [2018-01-24 20:56:04,201 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:56:04,203 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:56:04,203 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:56:04,203 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:56:04,203 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:56:04,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:56:04,223 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:56:04,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:56:04,336 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:56:04,336 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-24 20:56:04,336 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:56:04,336 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-24 20:56:04,337 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-24 20:56:04,337 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-01-24 20:56:04,337 INFO L87 Difference]: Start difference. First operand 134 states and 143 transitions. Second operand 7 states. [2018-01-24 20:56:04,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:56:04,610 INFO L93 Difference]: Finished difference Result 177 states and 187 transitions. [2018-01-24 20:56:04,611 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 20:56:04,611 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2018-01-24 20:56:04,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:56:04,612 INFO L225 Difference]: With dead ends: 177 [2018-01-24 20:56:04,612 INFO L226 Difference]: Without dead ends: 170 [2018-01-24 20:56:04,613 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-01-24 20:56:04,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2018-01-24 20:56:04,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 145. [2018-01-24 20:56:04,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-01-24 20:56:04,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 157 transitions. [2018-01-24 20:56:04,625 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 157 transitions. Word has length 16 [2018-01-24 20:56:04,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:56:04,625 INFO L432 AbstractCegarLoop]: Abstraction has 145 states and 157 transitions. [2018-01-24 20:56:04,626 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-24 20:56:04,626 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 157 transitions. [2018-01-24 20:56:04,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-24 20:56:04,626 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:56:04,627 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:56:04,627 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]=== [2018-01-24 20:56:04,627 INFO L82 PathProgramCache]: Analyzing trace with hash -1158984530, now seen corresponding path program 1 times [2018-01-24 20:56:04,628 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:56:04,629 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:56:04,629 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:56:04,629 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:56:04,629 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:56:04,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:56:04,647 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:56:04,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:56:04,717 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:56:04,717 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 20:56:04,717 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:56:04,717 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 20:56:04,718 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 20:56:04,718 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:56:04,718 INFO L87 Difference]: Start difference. First operand 145 states and 157 transitions. Second operand 5 states. [2018-01-24 20:56:04,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:56:04,976 INFO L93 Difference]: Finished difference Result 216 states and 235 transitions. [2018-01-24 20:56:04,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 20:56:04,977 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2018-01-24 20:56:04,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:56:04,978 INFO L225 Difference]: With dead ends: 216 [2018-01-24 20:56:04,978 INFO L226 Difference]: Without dead ends: 215 [2018-01-24 20:56:04,978 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-24 20:56:04,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2018-01-24 20:56:04,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 144. [2018-01-24 20:56:04,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2018-01-24 20:56:04,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 155 transitions. [2018-01-24 20:56:04,987 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 155 transitions. Word has length 18 [2018-01-24 20:56:04,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:56:04,988 INFO L432 AbstractCegarLoop]: Abstraction has 144 states and 155 transitions. [2018-01-24 20:56:04,988 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 20:56:04,988 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 155 transitions. [2018-01-24 20:56:04,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-24 20:56:04,989 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:56:04,989 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:56:04,989 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]=== [2018-01-24 20:56:04,989 INFO L82 PathProgramCache]: Analyzing trace with hash -1158984531, now seen corresponding path program 1 times [2018-01-24 20:56:04,989 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:56:04,990 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:56:04,990 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:56:04,990 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:56:04,990 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:56:04,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:56:05,000 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:56:05,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:56:05,038 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:56:05,039 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 20:56:05,039 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:56:05,039 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 20:56:05,039 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 20:56:05,039 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:56:05,040 INFO L87 Difference]: Start difference. First operand 144 states and 155 transitions. Second operand 5 states. [2018-01-24 20:56:05,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:56:05,204 INFO L93 Difference]: Finished difference Result 192 states and 208 transitions. [2018-01-24 20:56:05,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 20:56:05,204 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2018-01-24 20:56:05,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:56:05,205 INFO L225 Difference]: With dead ends: 192 [2018-01-24 20:56:05,205 INFO L226 Difference]: Without dead ends: 191 [2018-01-24 20:56:05,206 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-24 20:56:05,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-01-24 20:56:05,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 143. [2018-01-24 20:56:05,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-01-24 20:56:05,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 153 transitions. [2018-01-24 20:56:05,213 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 153 transitions. Word has length 18 [2018-01-24 20:56:05,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:56:05,213 INFO L432 AbstractCegarLoop]: Abstraction has 143 states and 153 transitions. [2018-01-24 20:56:05,213 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 20:56:05,214 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 153 transitions. [2018-01-24 20:56:05,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-24 20:56:05,214 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:56:05,214 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:56:05,214 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]=== [2018-01-24 20:56:05,214 INFO L82 PathProgramCache]: Analyzing trace with hash -2048091345, now seen corresponding path program 1 times [2018-01-24 20:56:05,215 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:56:05,215 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:56:05,216 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:56:05,216 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:56:05,216 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:56:05,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:56:05,233 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:56:05,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:56:05,336 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:56:05,337 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-24 20:56:05,337 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:56:05,337 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-24 20:56:05,338 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-24 20:56:05,338 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-01-24 20:56:05,338 INFO L87 Difference]: Start difference. First operand 143 states and 153 transitions. Second operand 9 states. [2018-01-24 20:56:05,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:56:05,623 INFO L93 Difference]: Finished difference Result 157 states and 167 transitions. [2018-01-24 20:56:05,623 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-24 20:56:05,623 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2018-01-24 20:56:05,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:56:05,624 INFO L225 Difference]: With dead ends: 157 [2018-01-24 20:56:05,624 INFO L226 Difference]: Without dead ends: 156 [2018-01-24 20:56:05,625 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 [2018-01-24 20:56:05,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2018-01-24 20:56:05,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 142. [2018-01-24 20:56:05,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2018-01-24 20:56:05,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 152 transitions. [2018-01-24 20:56:05,631 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 152 transitions. Word has length 22 [2018-01-24 20:56:05,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:56:05,631 INFO L432 AbstractCegarLoop]: Abstraction has 142 states and 152 transitions. [2018-01-24 20:56:05,631 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-24 20:56:05,631 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 152 transitions. [2018-01-24 20:56:05,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-24 20:56:05,632 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:56:05,632 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:56:05,632 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]=== [2018-01-24 20:56:05,632 INFO L82 PathProgramCache]: Analyzing trace with hash -2048091344, now seen corresponding path program 1 times [2018-01-24 20:56:05,632 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:56:05,633 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:56:05,633 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:56:05,633 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:56:05,633 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:56:05,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:56:05,650 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:56:05,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:56:05,824 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:56:05,824 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-01-24 20:56:05,824 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:56:05,825 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-24 20:56:05,825 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-24 20:56:05,825 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-01-24 20:56:05,825 INFO L87 Difference]: Start difference. First operand 142 states and 152 transitions. Second operand 10 states. [2018-01-24 20:56:06,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:56:06,546 INFO L93 Difference]: Finished difference Result 183 states and 194 transitions. [2018-01-24 20:56:06,547 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-24 20:56:06,547 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2018-01-24 20:56:06,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:56:06,548 INFO L225 Difference]: With dead ends: 183 [2018-01-24 20:56:06,549 INFO L226 Difference]: Without dead ends: 172 [2018-01-24 20:56:06,549 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 [2018-01-24 20:56:06,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2018-01-24 20:56:06,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 147. [2018-01-24 20:56:06,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-01-24 20:56:06,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 157 transitions. [2018-01-24 20:56:06,558 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 157 transitions. Word has length 22 [2018-01-24 20:56:06,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:56:06,561 INFO L432 AbstractCegarLoop]: Abstraction has 147 states and 157 transitions. [2018-01-24 20:56:06,562 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-24 20:56:06,562 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 157 transitions. [2018-01-24 20:56:06,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-01-24 20:56:06,563 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:56:06,563 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:56:06,563 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]=== [2018-01-24 20:56:06,563 INFO L82 PathProgramCache]: Analyzing trace with hash -328401667, now seen corresponding path program 1 times [2018-01-24 20:56:06,564 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:56:06,566 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:56:06,566 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:56:06,566 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:56:06,566 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:56:06,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:56:06,583 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:56:06,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:56:06,626 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:56:06,626 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-24 20:56:06,626 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:56:06,627 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 20:56:06,627 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 20:56:06,627 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:56:06,627 INFO L87 Difference]: Start difference. First operand 147 states and 157 transitions. Second operand 5 states. [2018-01-24 20:56:06,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:56:06,775 INFO L93 Difference]: Finished difference Result 201 states and 215 transitions. [2018-01-24 20:56:06,775 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 20:56:06,775 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2018-01-24 20:56:06,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:56:06,776 INFO L225 Difference]: With dead ends: 201 [2018-01-24 20:56:06,777 INFO L226 Difference]: Without dead ends: 165 [2018-01-24 20:56:06,777 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 [2018-01-24 20:56:06,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2018-01-24 20:56:06,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 147. [2018-01-24 20:56:06,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-01-24 20:56:06,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 155 transitions. [2018-01-24 20:56:06,784 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 155 transitions. Word has length 28 [2018-01-24 20:56:06,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:56:06,785 INFO L432 AbstractCegarLoop]: Abstraction has 147 states and 155 transitions. [2018-01-24 20:56:06,785 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 20:56:06,785 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 155 transitions. [2018-01-24 20:56:06,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-24 20:56:06,786 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:56:06,786 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:56:06,786 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]=== [2018-01-24 20:56:06,786 INFO L82 PathProgramCache]: Analyzing trace with hash 143362465, now seen corresponding path program 1 times [2018-01-24 20:56:06,787 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:56:06,788 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:56:06,788 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:56:06,788 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:56:06,788 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:56:06,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:56:06,802 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:56:06,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:56:06,853 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:56:06,854 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 20:56:06,854 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:56:06,854 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 20:56:06,854 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 20:56:06,854 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:56:06,854 INFO L87 Difference]: Start difference. First operand 147 states and 155 transitions. Second operand 5 states. [2018-01-24 20:56:07,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:56:07,051 INFO L93 Difference]: Finished difference Result 219 states and 233 transitions. [2018-01-24 20:56:07,051 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 20:56:07,051 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2018-01-24 20:56:07,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:56:07,053 INFO L225 Difference]: With dead ends: 219 [2018-01-24 20:56:07,053 INFO L226 Difference]: Without dead ends: 218 [2018-01-24 20:56:07,053 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-24 20:56:07,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2018-01-24 20:56:07,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 146. [2018-01-24 20:56:07,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2018-01-24 20:56:07,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 154 transitions. [2018-01-24 20:56:07,061 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 154 transitions. Word has length 29 [2018-01-24 20:56:07,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:56:07,061 INFO L432 AbstractCegarLoop]: Abstraction has 146 states and 154 transitions. [2018-01-24 20:56:07,062 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 20:56:07,062 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 154 transitions. [2018-01-24 20:56:07,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-24 20:56:07,063 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:56:07,063 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:56:07,063 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]=== [2018-01-24 20:56:07,063 INFO L82 PathProgramCache]: Analyzing trace with hash 143362466, now seen corresponding path program 1 times [2018-01-24 20:56:07,064 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:56:07,064 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:56:07,065 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:56:07,065 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:56:07,065 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:56:07,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:56:07,080 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:56:07,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:56:07,138 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:56:07,138 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 20:56:07,138 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:56:07,139 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 20:56:07,139 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 20:56:07,139 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:56:07,139 INFO L87 Difference]: Start difference. First operand 146 states and 154 transitions. Second operand 5 states. [2018-01-24 20:56:07,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:56:07,364 INFO L93 Difference]: Finished difference Result 244 states and 259 transitions. [2018-01-24 20:56:07,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 20:56:07,365 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2018-01-24 20:56:07,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:56:07,366 INFO L225 Difference]: With dead ends: 244 [2018-01-24 20:56:07,366 INFO L226 Difference]: Without dead ends: 243 [2018-01-24 20:56:07,367 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-24 20:56:07,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-01-24 20:56:07,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 145. [2018-01-24 20:56:07,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-01-24 20:56:07,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 153 transitions. [2018-01-24 20:56:07,375 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 153 transitions. Word has length 29 [2018-01-24 20:56:07,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:56:07,375 INFO L432 AbstractCegarLoop]: Abstraction has 145 states and 153 transitions. [2018-01-24 20:56:07,376 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 20:56:07,376 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 153 transitions. [2018-01-24 20:56:07,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-01-24 20:56:07,377 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:56:07,377 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] [2018-01-24 20:56:07,377 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]=== [2018-01-24 20:56:07,377 INFO L82 PathProgramCache]: Analyzing trace with hash 1819547941, now seen corresponding path program 1 times [2018-01-24 20:56:07,377 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:56:07,378 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:56:07,378 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:56:07,378 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:56:07,379 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:56:07,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:56:07,387 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:56:07,503 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:56:07,503 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 20:56:07,503 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-24 20:56:07,504 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 32 with the following transitions: [2018-01-24 20:56:07,506 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] [2018-01-24 20:56:07,563 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-24 20:56:07,563 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