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/forester-heap/dll-rb-cnstr_1_false-unreach-call_false-valid-deref.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-25 03:53:55,265 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-25 03:53:55,267 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-25 03:53:55,281 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-25 03:53:55,281 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-25 03:53:55,282 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-25 03:53:55,283 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-25 03:53:55,285 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-25 03:53:55,287 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-25 03:53:55,288 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-25 03:53:55,289 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-25 03:53:55,290 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-25 03:53:55,291 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-25 03:53:55,292 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-25 03:53:55,293 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-25 03:53:55,295 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-25 03:53:55,298 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-25 03:53:55,300 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-25 03:53:55,301 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-25 03:53:55,303 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-25 03:53:55,305 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-25 03:53:55,305 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-25 03:53:55,306 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-25 03:53:55,307 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-25 03:53:55,308 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-25 03:53:55,309 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-25 03:53:55,310 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-25 03:53:55,310 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-25 03:53:55,311 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-25 03:53:55,311 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-25 03:53:55,312 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-25 03:53:55,312 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 03:53:55,322 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-25 03:53:55,322 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-25 03:53:55,323 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-25 03:53:55,323 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-25 03:53:55,324 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-25 03:53:55,324 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-25 03:53:55,324 INFO L133 SettingsManager]: * Flatten before fatten=true [2018-01-25 03:53:55,324 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-25 03:53:55,324 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-25 03:53:55,325 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-25 03:53:55,325 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-25 03:53:55,325 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-25 03:53:55,325 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-25 03:53:55,325 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-25 03:53:55,326 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-25 03:53:55,326 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-25 03:53:55,326 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-25 03:53:55,326 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-25 03:53:55,326 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-25 03:53:55,326 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-25 03:53:55,326 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-25 03:53:55,327 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-25 03:53:55,327 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-25 03:53:55,327 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-25 03:53:55,327 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-25 03:53:55,327 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-25 03:53:55,328 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-25 03:53:55,328 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-25 03:53:55,328 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-25 03:53:55,328 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-25 03:53:55,328 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-25 03:53:55,328 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-25 03:53:55,328 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-25 03:53:55,329 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-25 03:53:55,329 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-25 03:53:55,329 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-25 03:53:55,329 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-25 03:53:55,364 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-25 03:53:55,375 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-25 03:53:55,379 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-25 03:53:55,380 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-25 03:53:55,380 INFO L276 PluginConnector]: CDTParser initialized [2018-01-25 03:53:55,381 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-rb-cnstr_1_false-unreach-call_false-valid-deref.i [2018-01-25 03:53:55,597 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-25 03:53:55,602 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-25 03:53:55,603 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-25 03:53:55,603 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-25 03:53:55,608 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-25 03:53:55,609 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 03:53:55" (1/1) ... [2018-01-25 03:53:55,612 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18c1919f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:53:55, skipping insertion in model container [2018-01-25 03:53:55,612 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 03:53:55" (1/1) ... [2018-01-25 03:53:55,624 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 03:53:55,663 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 03:53:55,794 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 03:53:55,817 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 03:53:55,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:53:55 WrapperNode [2018-01-25 03:53:55,827 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-25 03:53:55,828 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-25 03:53:55,828 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-25 03:53:55,828 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-25 03:53:55,840 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:53:55" (1/1) ... [2018-01-25 03:53:55,841 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:53:55" (1/1) ... [2018-01-25 03:53:55,850 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:53:55" (1/1) ... [2018-01-25 03:53:55,851 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:53:55" (1/1) ... [2018-01-25 03:53:55,858 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:53:55" (1/1) ... [2018-01-25 03:53:55,863 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:53:55" (1/1) ... [2018-01-25 03:53:55,865 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:53:55" (1/1) ... [2018-01-25 03:53:55,868 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-25 03:53:55,869 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-25 03:53:55,869 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-25 03:53:55,869 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-25 03:53:55,870 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:53:55" (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 03:53:55,920 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-25 03:53:55,921 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-25 03:53:55,921 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-25 03:53:55,921 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-25 03:53:55,921 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-25 03:53:55,921 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-25 03:53:55,921 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-25 03:53:55,922 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-25 03:53:55,922 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-25 03:53:55,922 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-25 03:53:55,922 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-25 03:53:55,922 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-25 03:53:55,922 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-25 03:53:55,923 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-25 03:53:55,923 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-25 03:53:55,923 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-25 03:53:55,923 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-25 03:53:56,524 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-25 03:53:56,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 03:53:56 BoogieIcfgContainer [2018-01-25 03:53:56,547 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-25 03:53:56,548 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-25 03:53:56,548 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-25 03:53:56,550 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-25 03:53:56,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.01 03:53:55" (1/3) ... [2018-01-25 03:53:56,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dbbb33e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 03:53:56, skipping insertion in model container [2018-01-25 03:53:56,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:53:55" (2/3) ... [2018-01-25 03:53:56,552 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dbbb33e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 03:53:56, skipping insertion in model container [2018-01-25 03:53:56,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 03:53:56" (3/3) ... [2018-01-25 03:53:56,554 INFO L105 eAbstractionObserver]: Analyzing ICFG dll-rb-cnstr_1_false-unreach-call_false-valid-deref.i [2018-01-25 03:53:56,562 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-25 03:53:56,569 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 59 error locations. [2018-01-25 03:53:56,627 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-25 03:53:56,627 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-25 03:53:56,627 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-25 03:53:56,627 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-25 03:53:56,627 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-25 03:53:56,628 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-25 03:53:56,628 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-25 03:53:56,628 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-25 03:53:56,629 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-25 03:53:56,655 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states. [2018-01-25 03:53:56,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-25 03:53:56,662 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:53:56,663 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:53:56,663 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 03:53:56,669 INFO L82 PathProgramCache]: Analyzing trace with hash 1658030564, now seen corresponding path program 1 times [2018-01-25 03:53:56,671 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:53:56,740 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:53:56,741 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:53:56,741 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:53:56,741 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:53:56,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:53:56,786 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:53:56,864 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 03:53:56,867 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:53:56,867 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 03:53:56,868 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:53:56,871 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 03:53:56,886 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 03:53:56,887 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 03:53:56,890 INFO L87 Difference]: Start difference. First operand 135 states. Second operand 4 states. [2018-01-25 03:53:57,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:53:57,202 INFO L93 Difference]: Finished difference Result 218 states and 261 transitions. [2018-01-25 03:53:57,202 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 03:53:57,203 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-25 03:53:57,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:53:57,213 INFO L225 Difference]: With dead ends: 218 [2018-01-25 03:53:57,214 INFO L226 Difference]: Without dead ends: 143 [2018-01-25 03:53:57,217 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 03:53:57,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-01-25 03:53:57,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 128. [2018-01-25 03:53:57,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2018-01-25 03:53:57,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 135 transitions. [2018-01-25 03:53:57,257 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 135 transitions. Word has length 8 [2018-01-25 03:53:57,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:53:57,258 INFO L432 AbstractCegarLoop]: Abstraction has 128 states and 135 transitions. [2018-01-25 03:53:57,258 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 03:53:57,258 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 135 transitions. [2018-01-25 03:53:57,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-25 03:53:57,258 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:53:57,258 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:53:57,259 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 03:53:57,259 INFO L82 PathProgramCache]: Analyzing trace with hash 1658030565, now seen corresponding path program 1 times [2018-01-25 03:53:57,259 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:53:57,261 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:53:57,261 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:53:57,261 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:53:57,261 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:53:57,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:53:57,278 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:53:57,354 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 03:53:57,355 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:53:57,355 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 03:53:57,355 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:53:57,356 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 03:53:57,357 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 03:53:57,357 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 03:53:57,357 INFO L87 Difference]: Start difference. First operand 128 states and 135 transitions. Second operand 4 states. [2018-01-25 03:53:57,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:53:57,534 INFO L93 Difference]: Finished difference Result 148 states and 154 transitions. [2018-01-25 03:53:57,534 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-25 03:53:57,534 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-25 03:53:57,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:53:57,536 INFO L225 Difference]: With dead ends: 148 [2018-01-25 03:53:57,536 INFO L226 Difference]: Without dead ends: 140 [2018-01-25 03:53:57,537 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 03:53:57,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2018-01-25 03:53:57,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 132. [2018-01-25 03:53:57,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2018-01-25 03:53:57,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 139 transitions. [2018-01-25 03:53:57,549 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 139 transitions. Word has length 8 [2018-01-25 03:53:57,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:53:57,549 INFO L432 AbstractCegarLoop]: Abstraction has 132 states and 139 transitions. [2018-01-25 03:53:57,549 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 03:53:57,549 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 139 transitions. [2018-01-25 03:53:57,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-01-25 03:53:57,550 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:53:57,550 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:53:57,550 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 03:53:57,551 INFO L82 PathProgramCache]: Analyzing trace with hash -1172213647, now seen corresponding path program 1 times [2018-01-25 03:53:57,551 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:53:57,552 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:53:57,553 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:53:57,553 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:53:57,553 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:53:57,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:53:57,578 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:53:57,676 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 03:53:57,676 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:53:57,677 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 03:53:57,677 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:53:57,677 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 03:53:57,677 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 03:53:57,677 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 03:53:57,678 INFO L87 Difference]: Start difference. First operand 132 states and 139 transitions. Second operand 4 states. [2018-01-25 03:53:57,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:53:57,837 INFO L93 Difference]: Finished difference Result 155 states and 163 transitions. [2018-01-25 03:53:57,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 03:53:57,837 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2018-01-25 03:53:57,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:53:57,838 INFO L225 Difference]: With dead ends: 155 [2018-01-25 03:53:57,838 INFO L226 Difference]: Without dead ends: 140 [2018-01-25 03:53:57,839 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 2 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 03:53:57,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2018-01-25 03:53:57,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 124. [2018-01-25 03:53:57,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2018-01-25 03:53:57,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 134 transitions. [2018-01-25 03:53:57,850 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 134 transitions. Word has length 16 [2018-01-25 03:53:57,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:53:57,851 INFO L432 AbstractCegarLoop]: Abstraction has 124 states and 134 transitions. [2018-01-25 03:53:57,851 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 03:53:57,851 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 134 transitions. [2018-01-25 03:53:57,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-01-25 03:53:57,852 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:53:57,852 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:53:57,852 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 03:53:57,852 INFO L82 PathProgramCache]: Analyzing trace with hash -1172213646, now seen corresponding path program 1 times [2018-01-25 03:53:57,853 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:53:57,854 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:53:57,854 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:53:57,854 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:53:57,855 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:53:57,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:53:57,875 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:53:57,986 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 03:53:57,986 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:53:57,987 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-25 03:53:57,987 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:53:57,987 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-25 03:53:57,987 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-25 03:53:57,988 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-01-25 03:53:57,988 INFO L87 Difference]: Start difference. First operand 124 states and 134 transitions. Second operand 7 states. [2018-01-25 03:53:58,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:53:58,256 INFO L93 Difference]: Finished difference Result 172 states and 183 transitions. [2018-01-25 03:53:58,257 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 03:53:58,257 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2018-01-25 03:53:58,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:53:58,258 INFO L225 Difference]: With dead ends: 172 [2018-01-25 03:53:58,258 INFO L226 Difference]: Without dead ends: 164 [2018-01-25 03:53:58,258 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-01-25 03:53:58,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2018-01-25 03:53:58,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 139. [2018-01-25 03:53:58,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-01-25 03:53:58,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 152 transitions. [2018-01-25 03:53:58,269 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 152 transitions. Word has length 16 [2018-01-25 03:53:58,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:53:58,270 INFO L432 AbstractCegarLoop]: Abstraction has 139 states and 152 transitions. [2018-01-25 03:53:58,270 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-25 03:53:58,270 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 152 transitions. [2018-01-25 03:53:58,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-25 03:53:58,270 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:53:58,271 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:53:58,271 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 03:53:58,271 INFO L82 PathProgramCache]: Analyzing trace with hash -1215883307, now seen corresponding path program 1 times [2018-01-25 03:53:58,271 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:53:58,272 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:53:58,272 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:53:58,272 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:53:58,272 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:53:58,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:53:58,289 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:53:58,363 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 03:53:58,364 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:53:58,364 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 03:53:58,364 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:53:58,364 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 03:53:58,364 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 03:53:58,364 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 03:53:58,365 INFO L87 Difference]: Start difference. First operand 139 states and 152 transitions. Second operand 5 states. [2018-01-25 03:53:58,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:53:58,652 INFO L93 Difference]: Finished difference Result 217 states and 238 transitions. [2018-01-25 03:53:58,652 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 03:53:58,652 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2018-01-25 03:53:58,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:53:58,654 INFO L225 Difference]: With dead ends: 217 [2018-01-25 03:53:58,654 INFO L226 Difference]: Without dead ends: 216 [2018-01-25 03:53:58,654 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-25 03:53:58,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2018-01-25 03:53:58,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 138. [2018-01-25 03:53:58,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2018-01-25 03:53:58,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 150 transitions. [2018-01-25 03:53:58,663 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 150 transitions. Word has length 18 [2018-01-25 03:53:58,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:53:58,663 INFO L432 AbstractCegarLoop]: Abstraction has 138 states and 150 transitions. [2018-01-25 03:53:58,663 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 03:53:58,663 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 150 transitions. [2018-01-25 03:53:58,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-25 03:53:58,664 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:53:58,664 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:53:58,664 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 03:53:58,665 INFO L82 PathProgramCache]: Analyzing trace with hash -1215883308, now seen corresponding path program 1 times [2018-01-25 03:53:58,665 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:53:58,666 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:53:58,666 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:53:58,666 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:53:58,666 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:53:58,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:53:58,679 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:53:58,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:53:58,716 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:53:58,716 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 03:53:58,716 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:53:58,716 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 03:53:58,716 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 03:53:58,716 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 03:53:58,717 INFO L87 Difference]: Start difference. First operand 138 states and 150 transitions. Second operand 5 states. [2018-01-25 03:53:58,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:53:58,882 INFO L93 Difference]: Finished difference Result 193 states and 211 transitions. [2018-01-25 03:53:58,882 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 03:53:58,882 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2018-01-25 03:53:58,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:53:58,883 INFO L225 Difference]: With dead ends: 193 [2018-01-25 03:53:58,883 INFO L226 Difference]: Without dead ends: 192 [2018-01-25 03:53:58,883 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-25 03:53:58,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2018-01-25 03:53:58,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 137. [2018-01-25 03:53:58,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-01-25 03:53:58,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 148 transitions. [2018-01-25 03:53:58,891 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 148 transitions. Word has length 18 [2018-01-25 03:53:58,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:53:58,892 INFO L432 AbstractCegarLoop]: Abstraction has 137 states and 148 transitions. [2018-01-25 03:53:58,892 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 03:53:58,892 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 148 transitions. [2018-01-25 03:53:58,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-25 03:53:58,893 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:53:58,893 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:53:58,893 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 03:53:58,894 INFO L82 PathProgramCache]: Analyzing trace with hash -338658602, now seen corresponding path program 1 times [2018-01-25 03:53:58,894 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:53:58,895 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:53:58,895 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:53:58,895 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:53:58,895 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:53:58,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:53:58,914 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:53:59,005 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 03:53:59,006 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:53:59,006 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-25 03:53:59,006 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:53:59,006 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-25 03:53:59,007 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-25 03:53:59,007 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-01-25 03:53:59,007 INFO L87 Difference]: Start difference. First operand 137 states and 148 transitions. Second operand 9 states. [2018-01-25 03:53:59,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:53:59,330 INFO L93 Difference]: Finished difference Result 152 states and 162 transitions. [2018-01-25 03:53:59,330 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-25 03:53:59,330 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2018-01-25 03:53:59,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:53:59,331 INFO L225 Difference]: With dead ends: 152 [2018-01-25 03:53:59,331 INFO L226 Difference]: Without dead ends: 151 [2018-01-25 03:53:59,332 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2018-01-25 03:53:59,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-01-25 03:53:59,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 136. [2018-01-25 03:53:59,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2018-01-25 03:53:59,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 147 transitions. [2018-01-25 03:53:59,337 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 147 transitions. Word has length 22 [2018-01-25 03:53:59,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:53:59,338 INFO L432 AbstractCegarLoop]: Abstraction has 136 states and 147 transitions. [2018-01-25 03:53:59,338 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-25 03:53:59,338 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 147 transitions. [2018-01-25 03:53:59,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-25 03:53:59,338 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:53:59,338 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:53:59,339 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 03:53:59,339 INFO L82 PathProgramCache]: Analyzing trace with hash -338658601, now seen corresponding path program 1 times [2018-01-25 03:53:59,339 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:53:59,340 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:53:59,340 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:53:59,340 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:53:59,340 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:53:59,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:53:59,358 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:53:59,481 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 03:53:59,481 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:53:59,481 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-01-25 03:53:59,482 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:53:59,482 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-25 03:53:59,482 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-25 03:53:59,482 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-01-25 03:53:59,483 INFO L87 Difference]: Start difference. First operand 136 states and 147 transitions. Second operand 10 states. [2018-01-25 03:54:00,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:54:00,007 INFO L93 Difference]: Finished difference Result 165 states and 176 transitions. [2018-01-25 03:54:00,008 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-25 03:54:00,008 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2018-01-25 03:54:00,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:54:00,009 INFO L225 Difference]: With dead ends: 165 [2018-01-25 03:54:00,009 INFO L226 Difference]: Without dead ends: 156 [2018-01-25 03:54:00,009 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=129, Invalid=291, Unknown=0, NotChecked=0, Total=420 [2018-01-25 03:54:00,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2018-01-25 03:54:00,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 130. [2018-01-25 03:54:00,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2018-01-25 03:54:00,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 141 transitions. [2018-01-25 03:54:00,015 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 141 transitions. Word has length 22 [2018-01-25 03:54:00,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:54:00,015 INFO L432 AbstractCegarLoop]: Abstraction has 130 states and 141 transitions. [2018-01-25 03:54:00,016 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-25 03:54:00,016 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 141 transitions. [2018-01-25 03:54:00,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-01-25 03:54:00,017 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:54:00,017 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:54:00,017 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 03:54:00,018 INFO L82 PathProgramCache]: Analyzing trace with hash 877684228, now seen corresponding path program 1 times [2018-01-25 03:54:00,018 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:54:00,019 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:54:00,019 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:54:00,019 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:54:00,020 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:54:00,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:54:00,030 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:54:00,116 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 03:54:00,117 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:54:00,117 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-25 03:54:00,117 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:54:00,118 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 03:54:00,118 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 03:54:00,118 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 03:54:00,118 INFO L87 Difference]: Start difference. First operand 130 states and 141 transitions. Second operand 5 states. [2018-01-25 03:54:00,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:54:00,486 INFO L93 Difference]: Finished difference Result 184 states and 199 transitions. [2018-01-25 03:54:00,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 03:54:00,486 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2018-01-25 03:54:00,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:54:00,487 INFO L225 Difference]: With dead ends: 184 [2018-01-25 03:54:00,487 INFO L226 Difference]: Without dead ends: 148 [2018-01-25 03:54:00,488 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-25 03:54:00,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2018-01-25 03:54:00,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 130. [2018-01-25 03:54:00,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2018-01-25 03:54:00,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 139 transitions. [2018-01-25 03:54:00,493 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 139 transitions. Word has length 28 [2018-01-25 03:54:00,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:54:00,494 INFO L432 AbstractCegarLoop]: Abstraction has 130 states and 139 transitions. [2018-01-25 03:54:00,494 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 03:54:00,494 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 139 transitions. [2018-01-25 03:54:00,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-25 03:54:00,495 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:54:00,495 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:54:00,495 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 03:54:00,495 INFO L82 PathProgramCache]: Analyzing trace with hash 1451762849, now seen corresponding path program 1 times [2018-01-25 03:54:00,495 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:54:00,496 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:54:00,496 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:54:00,496 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:54:00,496 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:54:00,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:54:00,507 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:54:00,623 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 03:54:00,624 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:54:00,624 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-25 03:54:00,624 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:54:00,624 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 03:54:00,625 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 03:54:00,625 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 03:54:00,625 INFO L87 Difference]: Start difference. First operand 130 states and 139 transitions. Second operand 5 states. [2018-01-25 03:54:00,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:54:00,812 INFO L93 Difference]: Finished difference Result 199 states and 214 transitions. [2018-01-25 03:54:00,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 03:54:00,813 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2018-01-25 03:54:00,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:54:00,814 INFO L225 Difference]: With dead ends: 199 [2018-01-25 03:54:00,814 INFO L226 Difference]: Without dead ends: 138 [2018-01-25 03:54:00,815 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-01-25 03:54:00,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-01-25 03:54:00,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 129. [2018-01-25 03:54:00,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-01-25 03:54:00,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 137 transitions. [2018-01-25 03:54:00,826 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 137 transitions. Word has length 29 [2018-01-25 03:54:00,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:54:00,826 INFO L432 AbstractCegarLoop]: Abstraction has 129 states and 137 transitions. [2018-01-25 03:54:00,826 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 03:54:00,827 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 137 transitions. [2018-01-25 03:54:00,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-25 03:54:00,828 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:54:00,828 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:54:00,828 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 03:54:00,828 INFO L82 PathProgramCache]: Analyzing trace with hash -1220341734, now seen corresponding path program 1 times [2018-01-25 03:54:00,828 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:54:00,829 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:54:00,830 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:54:00,830 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:54:00,830 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:54:00,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:54:00,847 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:54:00,913 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 03:54:00,914 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:54:00,914 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 03:54:00,914 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:54:00,914 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 03:54:00,914 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 03:54:00,915 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 03:54:00,915 INFO L87 Difference]: Start difference. First operand 129 states and 137 transitions. Second operand 5 states. [2018-01-25 03:54:01,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:54:01,154 INFO L93 Difference]: Finished difference Result 196 states and 210 transitions. [2018-01-25 03:54:01,154 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 03:54:01,155 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2018-01-25 03:54:01,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:54:01,155 INFO L225 Difference]: With dead ends: 196 [2018-01-25 03:54:01,156 INFO L226 Difference]: Without dead ends: 195 [2018-01-25 03:54:01,156 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-25 03:54:01,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-01-25 03:54:01,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 128. [2018-01-25 03:54:01,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2018-01-25 03:54:01,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 136 transitions. [2018-01-25 03:54:01,162 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 136 transitions. Word has length 29 [2018-01-25 03:54:01,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:54:01,163 INFO L432 AbstractCegarLoop]: Abstraction has 128 states and 136 transitions. [2018-01-25 03:54:01,163 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 03:54:01,163 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 136 transitions. [2018-01-25 03:54:01,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-25 03:54:01,164 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:54:01,164 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:54:01,164 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 03:54:01,164 INFO L82 PathProgramCache]: Analyzing trace with hash -1220341733, now seen corresponding path program 1 times [2018-01-25 03:54:01,164 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:54:01,165 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:54:01,165 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:54:01,165 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:54:01,165 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:54:01,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:54:01,182 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:54:01,247 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 03:54:01,247 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:54:01,247 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 03:54:01,247 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:54:01,248 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 03:54:01,248 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 03:54:01,248 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 03:54:01,248 INFO L87 Difference]: Start difference. First operand 128 states and 136 transitions. Second operand 5 states. [2018-01-25 03:54:01,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:54:01,611 INFO L93 Difference]: Finished difference Result 221 states and 236 transitions. [2018-01-25 03:54:01,625 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 03:54:01,625 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2018-01-25 03:54:01,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:54:01,626 INFO L225 Difference]: With dead ends: 221 [2018-01-25 03:54:01,627 INFO L226 Difference]: Without dead ends: 220 [2018-01-25 03:54:01,627 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-25 03:54:01,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2018-01-25 03:54:01,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 127. [2018-01-25 03:54:01,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-01-25 03:54:01,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 135 transitions. [2018-01-25 03:54:01,634 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 135 transitions. Word has length 29 [2018-01-25 03:54:01,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:54:01,634 INFO L432 AbstractCegarLoop]: Abstraction has 127 states and 135 transitions. [2018-01-25 03:54:01,634 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 03:54:01,634 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 135 transitions. [2018-01-25 03:54:01,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-01-25 03:54:01,635 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:54:01,636 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:54:01,636 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 03:54:01,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1085863836, now seen corresponding path program 1 times [2018-01-25 03:54:01,636 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:54:01,637 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:54:01,638 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:54:01,638 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:54:01,638 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:54:01,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:54:01,660 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:54:01,764 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 03:54:01,765 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:54:01,765 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-01-25 03:54:01,765 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:54:01,765 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-25 03:54:01,765 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-25 03:54:01,766 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-01-25 03:54:01,766 INFO L87 Difference]: Start difference. First operand 127 states and 135 transitions. Second operand 8 states. [2018-01-25 03:54:02,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:54:02,107 INFO L93 Difference]: Finished difference Result 134 states and 142 transitions. [2018-01-25 03:54:02,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-25 03:54:02,108 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2018-01-25 03:54:02,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:54:02,108 INFO L225 Difference]: With dead ends: 134 [2018-01-25 03:54:02,109 INFO L226 Difference]: Without dead ends: 133 [2018-01-25 03:54:02,109 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2018-01-25 03:54:02,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-01-25 03:54:02,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 126. [2018-01-25 03:54:02,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2018-01-25 03:54:02,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 134 transitions. [2018-01-25 03:54:02,115 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 134 transitions. Word has length 33 [2018-01-25 03:54:02,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:54:02,116 INFO L432 AbstractCegarLoop]: Abstraction has 126 states and 134 transitions. [2018-01-25 03:54:02,116 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-25 03:54:02,116 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 134 transitions. [2018-01-25 03:54:02,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-01-25 03:54:02,117 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:54:02,117 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:54:02,117 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 03:54:02,118 INFO L82 PathProgramCache]: Analyzing trace with hash 1085863837, now seen corresponding path program 1 times [2018-01-25 03:54:02,118 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:54:02,119 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:54:02,119 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:54:02,119 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:54:02,119 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:54:02,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:54:02,140 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:54:02,314 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 03:54:02,314 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:54:02,314 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-01-25 03:54:02,314 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:54:02,315 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-01-25 03:54:02,315 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-01-25 03:54:02,315 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2018-01-25 03:54:02,315 INFO L87 Difference]: Start difference. First operand 126 states and 134 transitions. Second operand 13 states. [2018-01-25 03:54:02,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:54:02,805 INFO L93 Difference]: Finished difference Result 129 states and 136 transitions. [2018-01-25 03:54:02,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-01-25 03:54:02,805 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 33 [2018-01-25 03:54:02,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:54:02,806 INFO L225 Difference]: With dead ends: 129 [2018-01-25 03:54:02,806 INFO L226 Difference]: Without dead ends: 124 [2018-01-25 03:54:02,806 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=145, Invalid=505, Unknown=0, NotChecked=0, Total=650 [2018-01-25 03:54:02,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2018-01-25 03:54:02,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 112. [2018-01-25 03:54:02,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2018-01-25 03:54:02,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 119 transitions. [2018-01-25 03:54:02,811 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 119 transitions. Word has length 33 [2018-01-25 03:54:02,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:54:02,811 INFO L432 AbstractCegarLoop]: Abstraction has 112 states and 119 transitions. [2018-01-25 03:54:02,811 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-01-25 03:54:02,811 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 119 transitions. [2018-01-25 03:54:02,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-01-25 03:54:02,812 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:54:02,813 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] [2018-01-25 03:54:02,813 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 03:54:02,813 INFO L82 PathProgramCache]: Analyzing trace with hash -499110813, now seen corresponding path program 1 times [2018-01-25 03:54:02,813 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:54:02,814 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:54:02,814 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:54:02,815 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:54:02,815 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:54:02,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:54:02,824 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:54:02,938 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 03:54:02,939 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:54:02,939 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-25 03:54:02,939 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:54:02,939 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 03:54:02,939 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 03:54:02,939 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 03:54:02,940 INFO L87 Difference]: Start difference. First operand 112 states and 119 transitions. Second operand 5 states. [2018-01-25 03:54:03,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:54:03,034 INFO L93 Difference]: Finished difference Result 194 states and 207 transitions. [2018-01-25 03:54:03,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 03:54:03,034 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2018-01-25 03:54:03,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:54:03,035 INFO L225 Difference]: With dead ends: 194 [2018-01-25 03:54:03,035 INFO L226 Difference]: Without dead ends: 117 [2018-01-25 03:54:03,036 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-25 03:54:03,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-01-25 03:54:03,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 115. [2018-01-25 03:54:03,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-01-25 03:54:03,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 122 transitions. [2018-01-25 03:54:03,040 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 122 transitions. Word has length 35 [2018-01-25 03:54:03,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:54:03,040 INFO L432 AbstractCegarLoop]: Abstraction has 115 states and 122 transitions. [2018-01-25 03:54:03,040 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 03:54:03,041 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 122 transitions. [2018-01-25 03:54:03,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-01-25 03:54:03,041 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:54:03,041 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, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:54:03,041 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 03:54:03,042 INFO L82 PathProgramCache]: Analyzing trace with hash 413563347, now seen corresponding path program 1 times [2018-01-25 03:54:03,042 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:54:03,043 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:54:03,043 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:54:03,043 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:54:03,043 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:54:03,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:54:03,060 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:54:03,735 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:54:03,735 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-25 03:54:03,735 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-25 03:54:03,736 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 50 with the following transitions: [2018-01-25 03:54:03,737 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [11], [15], [17], [20], [22], [23], [24], [27], [30], [33], [34], [37], [38], [41], [44], [45], [78], [82], [87], [91], [99], [100], [107], [111], [119], [125], [126], [128], [141], [145], [146], [153], [157], [163], [166], [216], [217], [221], [222], [223] [2018-01-25 03:54:03,787 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-25 03:54:03,787 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