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_preciseopt.epf -i ../../../trunk/examples/svcomp/memsafety/test-0513_true-valid-memsafety.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-25 03:04:57,957 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-25 03:04:57,959 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-25 03:04:57,973 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-25 03:04:57,973 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-25 03:04:57,974 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-25 03:04:57,976 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-25 03:04:57,978 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-25 03:04:57,981 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-25 03:04:57,981 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-25 03:04:57,982 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-25 03:04:57,983 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-25 03:04:57,984 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-25 03:04:57,985 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-25 03:04:57,986 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-25 03:04:57,997 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-25 03:04:58,001 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-25 03:04:58,012 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-25 03:04:58,013 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-25 03:04:58,015 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-25 03:04:58,017 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-25 03:04:58,017 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-25 03:04:58,017 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-25 03:04:58,018 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-25 03:04:58,019 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-25 03:04:58,020 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-25 03:04:58,021 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-25 03:04:58,021 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-25 03:04:58,021 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-25 03:04:58,022 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-25 03:04:58,022 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-25 03:04:58,023 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_preciseopt.epf [2018-01-25 03:04:58,042 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-25 03:04:58,043 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-25 03:04:58,043 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-25 03:04:58,044 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-25 03:04:58,044 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-25 03:04:58,044 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-25 03:04:58,044 INFO L133 SettingsManager]: * Flatten before fatten=true [2018-01-25 03:04:58,044 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-25 03:04:58,045 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-25 03:04:58,045 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-25 03:04:58,045 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-25 03:04:58,046 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-25 03:04:58,046 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-25 03:04:58,046 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-25 03:04:58,046 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-25 03:04:58,046 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-25 03:04:58,047 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-25 03:04:58,047 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-25 03:04:58,047 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-25 03:04:58,047 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-25 03:04:58,047 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-25 03:04:58,048 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-25 03:04:58,048 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-25 03:04:58,048 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-25 03:04:58,048 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-25 03:04:58,048 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-25 03:04:58,049 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-25 03:04:58,049 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-25 03:04:58,049 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-25 03:04:58,049 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-25 03:04:58,049 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-25 03:04:58,050 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-25 03:04:58,050 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-25 03:04:58,056 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-25 03:04:58,056 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-25 03:04:58,057 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-25 03:04:58,057 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-25 03:04:58,104 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-25 03:04:58,119 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-25 03:04:58,124 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-25 03:04:58,126 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-25 03:04:58,126 INFO L276 PluginConnector]: CDTParser initialized [2018-01-25 03:04:58,127 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/memsafety/test-0513_true-valid-memsafety.i [2018-01-25 03:04:58,426 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-25 03:04:58,430 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-25 03:04:58,432 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-25 03:04:58,432 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-25 03:04:58,438 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-25 03:04:58,439 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 03:04:58" (1/1) ... [2018-01-25 03:04:58,442 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@114af0c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:04:58, skipping insertion in model container [2018-01-25 03:04:58,442 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 03:04:58" (1/1) ... [2018-01-25 03:04:58,459 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 03:04:58,526 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 03:04:58,692 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 03:04:58,735 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 03:04:58,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:04:58 WrapperNode [2018-01-25 03:04:58,742 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-25 03:04:58,743 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-25 03:04:58,743 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-25 03:04:58,743 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-25 03:04:58,756 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:04:58" (1/1) ... [2018-01-25 03:04:58,756 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:04:58" (1/1) ... [2018-01-25 03:04:58,769 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:04:58" (1/1) ... [2018-01-25 03:04:58,769 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:04:58" (1/1) ... [2018-01-25 03:04:58,778 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:04:58" (1/1) ... [2018-01-25 03:04:58,783 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:04:58" (1/1) ... [2018-01-25 03:04:58,785 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:04:58" (1/1) ... [2018-01-25 03:04:58,788 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-25 03:04:58,789 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-25 03:04:58,789 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-25 03:04:58,789 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-25 03:04:58,790 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:04:58" (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 03:04:58,843 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-25 03:04:58,843 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-25 03:04:58,843 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-25 03:04:58,843 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-25 03:04:58,844 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-25 03:04:58,844 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-25 03:04:58,844 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-25 03:04:58,844 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-25 03:04:58,844 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-25 03:04:58,844 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-25 03:04:58,845 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-25 03:04:58,845 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-25 03:04:58,845 INFO L128 BoogieDeclarations]: Found specification of procedure abort [2018-01-25 03:04:58,845 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-25 03:04:58,845 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-25 03:04:58,845 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-25 03:04:58,846 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-25 03:04:59,514 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-25 03:04:59,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 03:04:59 BoogieIcfgContainer [2018-01-25 03:04:59,515 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-25 03:04:59,516 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-25 03:04:59,516 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-25 03:04:59,518 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-25 03:04:59,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.01 03:04:58" (1/3) ... [2018-01-25 03:04:59,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40c34298 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 03:04:59, skipping insertion in model container [2018-01-25 03:04:59,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:04:58" (2/3) ... [2018-01-25 03:04:59,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40c34298 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 03:04:59, skipping insertion in model container [2018-01-25 03:04:59,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 03:04:59" (3/3) ... [2018-01-25 03:04:59,523 INFO L105 eAbstractionObserver]: Analyzing ICFG test-0513_true-valid-memsafety.i [2018-01-25 03:04:59,530 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-25 03:04:59,538 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 59 error locations. [2018-01-25 03:04:59,599 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-25 03:04:59,599 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-25 03:04:59,600 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-25 03:04:59,600 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-25 03:04:59,600 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-25 03:04:59,600 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-25 03:04:59,600 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-25 03:04:59,600 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-25 03:04:59,601 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-25 03:04:59,637 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states. [2018-01-25 03:04:59,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-01-25 03:04:59,645 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:04:59,646 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:04:59,646 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr58EnsuresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:04:59,652 INFO L82 PathProgramCache]: Analyzing trace with hash -894299951, now seen corresponding path program 1 times [2018-01-25 03:04:59,655 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:04:59,720 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:04:59,720 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:04:59,721 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:04:59,721 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:04:59,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:04:59,782 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:04:59,814 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 03:04:59,817 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:04:59,817 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-25 03:04:59,818 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:04:59,823 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-25 03:04:59,846 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-25 03:04:59,847 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-25 03:04:59,851 INFO L87 Difference]: Start difference. First operand 137 states. Second operand 2 states. [2018-01-25 03:05:00,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:05:00,035 INFO L93 Difference]: Finished difference Result 268 states and 294 transitions. [2018-01-25 03:05:00,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-25 03:05:00,036 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2018-01-25 03:05:00,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:05:00,047 INFO L225 Difference]: With dead ends: 268 [2018-01-25 03:05:00,048 INFO L226 Difference]: Without dead ends: 134 [2018-01-25 03:05:00,052 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-25 03:05:00,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2018-01-25 03:05:00,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2018-01-25 03:05:00,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2018-01-25 03:05:00,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 142 transitions. [2018-01-25 03:05:00,097 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 142 transitions. Word has length 9 [2018-01-25 03:05:00,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:05:00,098 INFO L432 AbstractCegarLoop]: Abstraction has 134 states and 142 transitions. [2018-01-25 03:05:00,098 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-25 03:05:00,098 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 142 transitions. [2018-01-25 03:05:00,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-01-25 03:05:00,099 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:05:00,099 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:05:00,100 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr58EnsuresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:05:00,100 INFO L82 PathProgramCache]: Analyzing trace with hash -477652767, now seen corresponding path program 1 times [2018-01-25 03:05:00,100 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:05:00,101 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:05:00,102 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:05:00,102 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:05:00,102 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:05:00,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:05:00,116 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:05:00,191 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 03:05:00,191 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:05:00,191 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-25 03:05:00,191 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:05:00,194 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-25 03:05:00,194 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-25 03:05:00,194 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-25 03:05:00,195 INFO L87 Difference]: Start difference. First operand 134 states and 142 transitions. Second operand 3 states. [2018-01-25 03:05:00,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:05:00,598 INFO L93 Difference]: Finished difference Result 178 states and 188 transitions. [2018-01-25 03:05:00,598 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-25 03:05:00,599 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-01-25 03:05:00,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:05:00,601 INFO L225 Difference]: With dead ends: 178 [2018-01-25 03:05:00,601 INFO L226 Difference]: Without dead ends: 176 [2018-01-25 03:05:00,602 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-25 03:05:00,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2018-01-25 03:05:00,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 138. [2018-01-25 03:05:00,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2018-01-25 03:05:00,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 147 transitions. [2018-01-25 03:05:00,613 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 147 transitions. Word has length 11 [2018-01-25 03:05:00,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:05:00,613 INFO L432 AbstractCegarLoop]: Abstraction has 138 states and 147 transitions. [2018-01-25 03:05:00,613 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-25 03:05:00,614 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 147 transitions. [2018-01-25 03:05:00,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-01-25 03:05:00,614 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:05:00,614 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:05:00,614 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr58EnsuresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:05:00,614 INFO L82 PathProgramCache]: Analyzing trace with hash -1922337046, now seen corresponding path program 1 times [2018-01-25 03:05:00,615 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:05:00,616 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:05:00,616 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:05:00,617 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:05:00,617 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:05:00,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:05:00,637 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:05:00,666 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 03:05:00,667 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:05:00,667 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 03:05:00,667 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:05:00,667 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-25 03:05:00,668 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-25 03:05:00,668 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-25 03:05:00,668 INFO L87 Difference]: Start difference. First operand 138 states and 147 transitions. Second operand 3 states. [2018-01-25 03:05:00,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:05:00,775 INFO L93 Difference]: Finished difference Result 282 states and 299 transitions. [2018-01-25 03:05:00,775 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-25 03:05:00,775 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2018-01-25 03:05:00,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:05:00,777 INFO L225 Difference]: With dead ends: 282 [2018-01-25 03:05:00,777 INFO L226 Difference]: Without dead ends: 153 [2018-01-25 03:05:00,778 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-25 03:05:00,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-01-25 03:05:00,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 147. [2018-01-25 03:05:00,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-01-25 03:05:00,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 159 transitions. [2018-01-25 03:05:00,792 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 159 transitions. Word has length 12 [2018-01-25 03:05:00,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:05:00,792 INFO L432 AbstractCegarLoop]: Abstraction has 147 states and 159 transitions. [2018-01-25 03:05:00,792 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-25 03:05:00,792 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 159 transitions. [2018-01-25 03:05:00,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-01-25 03:05:00,793 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:05:00,793 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:05:00,793 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr58EnsuresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:05:00,793 INFO L82 PathProgramCache]: Analyzing trace with hash 537460283, now seen corresponding path program 1 times [2018-01-25 03:05:00,794 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:05:00,795 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:05:00,795 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:05:00,795 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:05:00,795 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:05:00,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:05:00,811 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:05:00,890 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 03:05:00,890 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:05:00,891 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 03:05:00,891 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:05:00,891 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 03:05:00,891 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 03:05:00,892 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 03:05:00,892 INFO L87 Difference]: Start difference. First operand 147 states and 159 transitions. Second operand 4 states. [2018-01-25 03:05:01,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:05:01,375 INFO L93 Difference]: Finished difference Result 223 states and 239 transitions. [2018-01-25 03:05:01,376 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 03:05:01,376 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2018-01-25 03:05:01,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:05:01,379 INFO L225 Difference]: With dead ends: 223 [2018-01-25 03:05:01,379 INFO L226 Difference]: Without dead ends: 219 [2018-01-25 03:05:01,381 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 03:05:01,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-01-25 03:05:01,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 149. [2018-01-25 03:05:01,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-01-25 03:05:01,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 163 transitions. [2018-01-25 03:05:01,399 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 163 transitions. Word has length 13 [2018-01-25 03:05:01,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:05:01,399 INFO L432 AbstractCegarLoop]: Abstraction has 149 states and 163 transitions. [2018-01-25 03:05:01,399 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 03:05:01,399 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 163 transitions. [2018-01-25 03:05:01,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-01-25 03:05:01,400 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:05:01,400 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:05:01,400 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr58EnsuresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:05:01,400 INFO L82 PathProgramCache]: Analyzing trace with hash 537460284, now seen corresponding path program 1 times [2018-01-25 03:05:01,400 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:05:01,401 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:05:01,401 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:05:01,401 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:05:01,401 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:05:01,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:05:01,412 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:05:01,482 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 03:05:01,482 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:05:01,483 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 03:05:01,483 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:05:01,483 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 03:05:01,483 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 03:05:01,483 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 03:05:01,483 INFO L87 Difference]: Start difference. First operand 149 states and 163 transitions. Second operand 4 states. [2018-01-25 03:05:01,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:05:01,701 INFO L93 Difference]: Finished difference Result 149 states and 163 transitions. [2018-01-25 03:05:01,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-25 03:05:01,702 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2018-01-25 03:05:01,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:05:01,702 INFO L225 Difference]: With dead ends: 149 [2018-01-25 03:05:01,703 INFO L226 Difference]: Without dead ends: 147 [2018-01-25 03:05:01,703 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 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 03:05:01,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-01-25 03:05:01,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2018-01-25 03:05:01,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-01-25 03:05:01,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 159 transitions. [2018-01-25 03:05:01,712 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 159 transitions. Word has length 13 [2018-01-25 03:05:01,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:05:01,713 INFO L432 AbstractCegarLoop]: Abstraction has 147 states and 159 transitions. [2018-01-25 03:05:01,713 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 03:05:01,713 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 159 transitions. [2018-01-25 03:05:01,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-01-25 03:05:01,714 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:05:01,714 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] [2018-01-25 03:05:01,714 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr58EnsuresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:05:01,714 INFO L82 PathProgramCache]: Analyzing trace with hash 632206755, now seen corresponding path program 1 times [2018-01-25 03:05:01,714 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:05:01,715 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:05:01,715 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:05:01,715 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:05:01,716 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:05:01,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:05:01,737 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:05:01,774 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 03:05:01,774 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:05:01,774 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 03:05:01,774 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:05:01,775 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 03:05:01,775 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 03:05:01,775 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 03:05:01,775 INFO L87 Difference]: Start difference. First operand 147 states and 159 transitions. Second operand 4 states. [2018-01-25 03:05:01,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:05:01,949 INFO L93 Difference]: Finished difference Result 185 states and 198 transitions. [2018-01-25 03:05:01,949 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 03:05:01,950 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2018-01-25 03:05:01,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:05:01,951 INFO L225 Difference]: With dead ends: 185 [2018-01-25 03:05:01,951 INFO L226 Difference]: Without dead ends: 181 [2018-01-25 03:05:01,952 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 03:05:01,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2018-01-25 03:05:01,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 143. [2018-01-25 03:05:01,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-01-25 03:05:01,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 155 transitions. [2018-01-25 03:05:01,960 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 155 transitions. Word has length 20 [2018-01-25 03:05:01,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:05:01,960 INFO L432 AbstractCegarLoop]: Abstraction has 143 states and 155 transitions. [2018-01-25 03:05:01,960 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 03:05:01,960 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 155 transitions. [2018-01-25 03:05:01,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-01-25 03:05:01,961 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:05:01,961 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] [2018-01-25 03:05:01,961 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr58EnsuresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:05:01,962 INFO L82 PathProgramCache]: Analyzing trace with hash 632206756, now seen corresponding path program 1 times [2018-01-25 03:05:01,962 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:05:01,963 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:05:01,963 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:05:01,963 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:05:01,963 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:05:01,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:05:01,987 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:05:02,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:05:02,047 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:05:02,048 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 03:05:02,048 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:05:02,048 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 03:05:02,048 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 03:05:02,049 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 03:05:02,049 INFO L87 Difference]: Start difference. First operand 143 states and 155 transitions. Second operand 4 states. [2018-01-25 03:05:02,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:05:02,210 INFO L93 Difference]: Finished difference Result 143 states and 155 transitions. [2018-01-25 03:05:02,210 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-25 03:05:02,210 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2018-01-25 03:05:02,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:05:02,211 INFO L225 Difference]: With dead ends: 143 [2018-01-25 03:05:02,211 INFO L226 Difference]: Without dead ends: 140 [2018-01-25 03:05:02,212 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 03:05:02,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2018-01-25 03:05:02,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2018-01-25 03:05:02,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2018-01-25 03:05:02,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 152 transitions. [2018-01-25 03:05:02,219 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 152 transitions. Word has length 20 [2018-01-25 03:05:02,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:05:02,219 INFO L432 AbstractCegarLoop]: Abstraction has 140 states and 152 transitions. [2018-01-25 03:05:02,219 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 03:05:02,220 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 152 transitions. [2018-01-25 03:05:02,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-01-25 03:05:02,220 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:05:02,221 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] [2018-01-25 03:05:02,221 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr58EnsuresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:05:02,221 INFO L82 PathProgramCache]: Analyzing trace with hash -145487102, now seen corresponding path program 1 times [2018-01-25 03:05:02,221 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:05:02,222 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:05:02,222 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:05:02,222 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:05:02,222 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:05:02,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:05:02,244 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:05:02,300 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:05:02,301 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:05:02,301 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-25 03:05:02,301 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:05:02,301 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 03:05:02,302 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 03:05:02,302 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 03:05:02,302 INFO L87 Difference]: Start difference. First operand 140 states and 152 transitions. Second operand 5 states. [2018-01-25 03:05:02,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:05:02,690 INFO L93 Difference]: Finished difference Result 355 states and 389 transitions. [2018-01-25 03:05:02,691 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 03:05:02,691 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2018-01-25 03:05:02,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:05:02,692 INFO L225 Difference]: With dead ends: 355 [2018-01-25 03:05:02,692 INFO L226 Difference]: Without dead ends: 234 [2018-01-25 03:05:02,693 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 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 03:05:02,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2018-01-25 03:05:02,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 140. [2018-01-25 03:05:02,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2018-01-25 03:05:02,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 150 transitions. [2018-01-25 03:05:02,702 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 150 transitions. Word has length 28 [2018-01-25 03:05:02,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:05:02,702 INFO L432 AbstractCegarLoop]: Abstraction has 140 states and 150 transitions. [2018-01-25 03:05:02,702 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 03:05:02,702 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 150 transitions. [2018-01-25 03:05:02,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-25 03:05:02,703 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:05:02,703 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] [2018-01-25 03:05:02,703 INFO L371 AbstractCegarLoop]: === Iteration 9 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr58EnsuresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:05:02,703 INFO L82 PathProgramCache]: Analyzing trace with hash -215136023, now seen corresponding path program 1 times [2018-01-25 03:05:02,703 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:05:02,704 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:05:02,704 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:05:02,704 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:05:02,704 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:05:02,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:05:02,722 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:05:02,921 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:05:02,922 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:05:02,922 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 03:05:02,922 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:05:02,922 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 03:05:02,923 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 03:05:02,923 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-25 03:05:02,923 INFO L87 Difference]: Start difference. First operand 140 states and 150 transitions. Second operand 5 states. [2018-01-25 03:05:03,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:05:03,206 INFO L93 Difference]: Finished difference Result 146 states and 156 transitions. [2018-01-25 03:05:03,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 03:05:03,206 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2018-01-25 03:05:03,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:05:03,207 INFO L225 Difference]: With dead ends: 146 [2018-01-25 03:05:03,207 INFO L226 Difference]: Without dead ends: 137 [2018-01-25 03:05:03,208 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-01-25 03:05:03,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2018-01-25 03:05:03,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 134. [2018-01-25 03:05:03,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2018-01-25 03:05:03,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 145 transitions. [2018-01-25 03:05:03,216 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 145 transitions. Word has length 29 [2018-01-25 03:05:03,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:05:03,216 INFO L432 AbstractCegarLoop]: Abstraction has 134 states and 145 transitions. [2018-01-25 03:05:03,216 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 03:05:03,217 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 145 transitions. [2018-01-25 03:05:03,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-25 03:05:03,217 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:05:03,217 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] [2018-01-25 03:05:03,217 INFO L371 AbstractCegarLoop]: === Iteration 10 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr58EnsuresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:05:03,218 INFO L82 PathProgramCache]: Analyzing trace with hash -215136022, now seen corresponding path program 1 times [2018-01-25 03:05:03,218 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:05:03,218 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:05:03,218 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:05:03,219 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:05:03,219 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:05:03,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:05:03,235 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:05:03,348 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:05:03,348 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:05:03,348 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 03:05:03,348 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:05:03,349 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 03:05:03,349 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 03:05:03,349 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 03:05:03,350 INFO L87 Difference]: Start difference. First operand 134 states and 145 transitions. Second operand 5 states. [2018-01-25 03:05:03,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:05:03,689 INFO L93 Difference]: Finished difference Result 220 states and 239 transitions. [2018-01-25 03:05:03,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 03:05:03,690 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2018-01-25 03:05:03,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:05:03,692 INFO L225 Difference]: With dead ends: 220 [2018-01-25 03:05:03,692 INFO L226 Difference]: Without dead ends: 210 [2018-01-25 03:05:03,692 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 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 03:05:03,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2018-01-25 03:05:03,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 174. [2018-01-25 03:05:03,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2018-01-25 03:05:03,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 216 transitions. [2018-01-25 03:05:03,703 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 216 transitions. Word has length 29 [2018-01-25 03:05:03,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:05:03,703 INFO L432 AbstractCegarLoop]: Abstraction has 174 states and 216 transitions. [2018-01-25 03:05:03,703 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 03:05:03,703 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 216 transitions. [2018-01-25 03:05:03,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-01-25 03:05:03,704 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:05:03,704 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:05:03,704 INFO L371 AbstractCegarLoop]: === Iteration 11 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr58EnsuresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:05:03,704 INFO L82 PathProgramCache]: Analyzing trace with hash 1844152872, now seen corresponding path program 1 times [2018-01-25 03:05:03,705 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:05:03,705 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:05:03,705 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:05:03,706 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:05:03,706 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:05:03,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:05:03,771 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:05:04,133 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:05:04,134 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:05:04,134 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-25 03:05:04,134 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:05:04,134 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-25 03:05:04,134 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-25 03:05:04,135 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-01-25 03:05:04,135 INFO L87 Difference]: Start difference. First operand 174 states and 216 transitions. Second operand 6 states. [2018-01-25 03:05:04,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:05:04,355 INFO L93 Difference]: Finished difference Result 329 states and 413 transitions. [2018-01-25 03:05:04,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 03:05:04,355 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2018-01-25 03:05:04,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:05:04,357 INFO L225 Difference]: With dead ends: 329 [2018-01-25 03:05:04,357 INFO L226 Difference]: Without dead ends: 202 [2018-01-25 03:05:04,358 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-01-25 03:05:04,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2018-01-25 03:05:04,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 183. [2018-01-25 03:05:04,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-01-25 03:05:04,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 226 transitions. [2018-01-25 03:05:04,368 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 226 transitions. Word has length 34 [2018-01-25 03:05:04,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:05:04,368 INFO L432 AbstractCegarLoop]: Abstraction has 183 states and 226 transitions. [2018-01-25 03:05:04,368 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-25 03:05:04,368 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 226 transitions. [2018-01-25 03:05:04,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-01-25 03:05:04,370 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:05:04,370 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:05:04,370 INFO L371 AbstractCegarLoop]: === Iteration 12 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr58EnsuresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:05:04,370 INFO L82 PathProgramCache]: Analyzing trace with hash -525574038, now seen corresponding path program 1 times [2018-01-25 03:05:04,370 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:05:04,371 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:05:04,372 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:05:04,372 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:05:04,372 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:05:04,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:05:04,393 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:05:04,829 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:05:04,829 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:05:04,829 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-01-25 03:05:04,829 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:05:04,830 INFO L409 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-01-25 03:05:04,830 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-01-25 03:05:04,830 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-01-25 03:05:04,830 INFO L87 Difference]: Start difference. First operand 183 states and 226 transitions. Second operand 11 states. [2018-01-25 03:05:06,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:05:06,640 INFO L93 Difference]: Finished difference Result 246 states and 291 transitions. [2018-01-25 03:05:06,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-01-25 03:05:06,640 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 36 [2018-01-25 03:05:06,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:05:06,641 INFO L225 Difference]: With dead ends: 246 [2018-01-25 03:05:06,642 INFO L226 Difference]: Without dead ends: 245 [2018-01-25 03:05:06,642 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2018-01-25 03:05:06,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2018-01-25 03:05:06,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 189. [2018-01-25 03:05:06,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-01-25 03:05:06,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 234 transitions. [2018-01-25 03:05:06,652 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 234 transitions. Word has length 36 [2018-01-25 03:05:06,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:05:06,652 INFO L432 AbstractCegarLoop]: Abstraction has 189 states and 234 transitions. [2018-01-25 03:05:06,652 INFO L433 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-01-25 03:05:06,653 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 234 transitions. [2018-01-25 03:05:06,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-01-25 03:05:06,654 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:05:06,654 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:05:06,654 INFO L371 AbstractCegarLoop]: === Iteration 13 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr58EnsuresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:05:06,654 INFO L82 PathProgramCache]: Analyzing trace with hash -525574037, now seen corresponding path program 1 times [2018-01-25 03:05:06,654 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:05:06,655 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:05:06,655 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:05:06,655 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:05:06,655 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:05:06,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:05:06,683 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:05:07,079 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:05:07,080 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:05:07,080 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-01-25 03:05:07,080 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:05:07,080 INFO L409 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-01-25 03:05:07,080 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-01-25 03:05:07,081 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2018-01-25 03:05:07,081 INFO L87 Difference]: Start difference. First operand 189 states and 234 transitions. Second operand 11 states. [2018-01-25 03:05:07,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:05:07,592 INFO L93 Difference]: Finished difference Result 222 states and 265 transitions. [2018-01-25 03:05:07,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-01-25 03:05:07,592 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 36 [2018-01-25 03:05:07,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:05:07,593 INFO L225 Difference]: With dead ends: 222 [2018-01-25 03:05:07,593 INFO L226 Difference]: Without dead ends: 221 [2018-01-25 03:05:07,594 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=154, Invalid=398, Unknown=0, NotChecked=0, Total=552 [2018-01-25 03:05:07,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2018-01-25 03:05:07,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 189. [2018-01-25 03:05:07,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-01-25 03:05:07,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 233 transitions. [2018-01-25 03:05:07,604 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 233 transitions. Word has length 36 [2018-01-25 03:05:07,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:05:07,605 INFO L432 AbstractCegarLoop]: Abstraction has 189 states and 233 transitions. [2018-01-25 03:05:07,605 INFO L433 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-01-25 03:05:07,605 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 233 transitions. [2018-01-25 03:05:07,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-01-25 03:05:07,606 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:05:07,606 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:05:07,606 INFO L371 AbstractCegarLoop]: === Iteration 14 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr58EnsuresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:05:07,606 INFO L82 PathProgramCache]: Analyzing trace with hash 887072562, now seen corresponding path program 1 times [2018-01-25 03:05:07,607 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:05:07,612 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:05:07,613 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:05:07,613 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:05:07,613 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:05:07,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:05:07,636 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:05:07,862 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:05:07,862 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:05:07,862 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-01-25 03:05:07,863 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:05:07,863 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-25 03:05:07,863 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-25 03:05:07,863 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-01-25 03:05:07,864 INFO L87 Difference]: Start difference. First operand 189 states and 233 transitions. Second operand 10 states. [2018-01-25 03:05:08,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:05:08,121 INFO L93 Difference]: Finished difference Result 209 states and 252 transitions. [2018-01-25 03:05:08,123 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-25 03:05:08,124 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 37 [2018-01-25 03:05:08,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:05:08,124 INFO L225 Difference]: With dead ends: 209 [2018-01-25 03:05:08,125 INFO L226 Difference]: Without dead ends: 206 [2018-01-25 03:05:08,125 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2018-01-25 03:05:08,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2018-01-25 03:05:08,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 189. [2018-01-25 03:05:08,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-01-25 03:05:08,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 232 transitions. [2018-01-25 03:05:08,137 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 232 transitions. Word has length 37 [2018-01-25 03:05:08,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:05:08,137 INFO L432 AbstractCegarLoop]: Abstraction has 189 states and 232 transitions. [2018-01-25 03:05:08,137 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-25 03:05:08,137 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 232 transitions. [2018-01-25 03:05:08,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-01-25 03:05:08,138 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:05:08,139 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:05:08,139 INFO L371 AbstractCegarLoop]: === Iteration 15 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr58EnsuresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:05:08,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1729495531, now seen corresponding path program 1 times [2018-01-25 03:05:08,139 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:05:08,140 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:05:08,140 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:05:08,140 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:05:08,140 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:05:08,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:05:08,174 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:05:08,941 WARN L146 SmtUtils]: Spent 184ms on a formula simplification. DAG size of input: 26 DAG size of output 12 [2018-01-25 03:05:09,262 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:05:09,263 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:05:09,263 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-01-25 03:05:09,263 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:05:09,263 INFO L409 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-01-25 03:05:09,263 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-01-25 03:05:09,264 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2018-01-25 03:05:09,264 INFO L87 Difference]: Start difference. First operand 189 states and 232 transitions. Second operand 11 states. [2018-01-25 03:05:09,831 WARN L146 SmtUtils]: Spent 148ms on a formula simplification. DAG size of input: 16 DAG size of output 15 [2018-01-25 03:05:10,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:05:10,465 INFO L93 Difference]: Finished difference Result 242 states and 287 transitions. [2018-01-25 03:05:10,466 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-01-25 03:05:10,466 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 38 [2018-01-25 03:05:10,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:05:10,467 INFO L225 Difference]: With dead ends: 242 [2018-01-25 03:05:10,467 INFO L226 Difference]: Without dead ends: 241 [2018-01-25 03:05:10,468 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=147, Invalid=405, Unknown=0, NotChecked=0, Total=552 [2018-01-25 03:05:10,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2018-01-25 03:05:10,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 191. [2018-01-25 03:05:10,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-01-25 03:05:10,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 235 transitions. [2018-01-25 03:05:10,488 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 235 transitions. Word has length 38 [2018-01-25 03:05:10,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:05:10,488 INFO L432 AbstractCegarLoop]: Abstraction has 191 states and 235 transitions. [2018-01-25 03:05:10,488 INFO L433 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-01-25 03:05:10,488 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 235 transitions. [2018-01-25 03:05:10,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-01-25 03:05:10,489 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:05:10,489 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:05:10,489 INFO L371 AbstractCegarLoop]: === Iteration 16 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr58EnsuresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:05:10,489 INFO L82 PathProgramCache]: Analyzing trace with hash 1729495532, now seen corresponding path program 1 times [2018-01-25 03:05:10,490 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:05:10,490 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:05:10,490 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:05:10,490 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:05:10,491 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:05:10,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:05:10,501 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:05:10,532 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-01-25 03:05:10,532 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:05:10,533 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 03:05:10,533 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:05:10,533 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 03:05:10,533 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 03:05:10,533 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 03:05:10,534 INFO L87 Difference]: Start difference. First operand 191 states and 235 transitions. Second operand 4 states. [2018-01-25 03:05:10,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:05:10,750 INFO L93 Difference]: Finished difference Result 247 states and 305 transitions. [2018-01-25 03:05:10,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 03:05:10,751 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2018-01-25 03:05:10,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:05:10,752 INFO L225 Difference]: With dead ends: 247 [2018-01-25 03:05:10,753 INFO L226 Difference]: Without dead ends: 244 [2018-01-25 03:05:10,753 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 03:05:10,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2018-01-25 03:05:10,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 197. [2018-01-25 03:05:10,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-01-25 03:05:10,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 247 transitions. [2018-01-25 03:05:10,765 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 247 transitions. Word has length 38 [2018-01-25 03:05:10,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:05:10,765 INFO L432 AbstractCegarLoop]: Abstraction has 197 states and 247 transitions. [2018-01-25 03:05:10,765 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 03:05:10,765 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 247 transitions. [2018-01-25 03:05:10,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-01-25 03:05:10,766 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:05:10,766 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:05:10,766 INFO L371 AbstractCegarLoop]: === Iteration 17 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr58EnsuresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:05:10,767 INFO L82 PathProgramCache]: Analyzing trace with hash 973830348, now seen corresponding path program 1 times [2018-01-25 03:05:10,767 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:05:10,768 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:05:10,768 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:05:10,768 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:05:10,768 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:05:10,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:05:10,784 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:05:11,245 WARN L146 SmtUtils]: Spent 164ms on a formula simplification. DAG size of input: 64 DAG size of output 39 [2018-01-25 03:05:11,359 WARN L146 SmtUtils]: Spent 100ms on a formula simplification. DAG size of input: 31 DAG size of output 23 [2018-01-25 03:05:11,550 WARN L146 SmtUtils]: Spent 154ms on a formula simplification. DAG size of input: 28 DAG size of output 20 [2018-01-25 03:05:11,893 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:05:11,893 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-25 03:05:11,893 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-25 03:05:11,894 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 42 with the following transitions: [2018-01-25 03:05:11,896 INFO L201 CegarAbsIntRunner]: [0], [4], [6], [9], [11], [12], [13], [18], [20], [23], [24], [27], [28], [29], [44], [45], [48], [50], [53], [60], [64], [66], [71], [170], [173], [174], [180], [186], [187], [188], [190], [191], [200], [201], [205], [206], [207] [2018-01-25 03:05:11,944 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-25 03:05:11,945 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