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/sll-01_true-unreach-call_true-valid-memsafety.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-25 03:48:27,865 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-25 03:48:27,867 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-25 03:48:27,883 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-25 03:48:27,883 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-25 03:48:27,884 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-25 03:48:27,885 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-25 03:48:27,887 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-25 03:48:27,889 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-25 03:48:27,890 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-25 03:48:27,890 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-25 03:48:27,890 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-25 03:48:27,891 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-25 03:48:27,892 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-25 03:48:27,893 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-25 03:48:27,896 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-25 03:48:27,898 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-25 03:48:27,900 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-25 03:48:27,902 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-25 03:48:27,903 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-25 03:48:27,905 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-25 03:48:27,905 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-25 03:48:27,906 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-25 03:48:27,907 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-25 03:48:27,908 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-25 03:48:27,909 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-25 03:48:27,909 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-25 03:48:27,910 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-25 03:48:27,910 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-25 03:48:27,910 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-25 03:48:27,911 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-25 03:48:27,911 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 03:48:27,921 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-25 03:48:27,922 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-25 03:48:27,922 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-25 03:48:27,923 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-25 03:48:27,923 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-25 03:48:27,923 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-25 03:48:27,923 INFO L133 SettingsManager]: * Flatten before fatten=true [2018-01-25 03:48:27,923 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-25 03:48:27,924 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-25 03:48:27,924 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-25 03:48:27,925 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-25 03:48:27,925 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-25 03:48:27,925 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-25 03:48:27,925 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-25 03:48:27,925 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-25 03:48:27,925 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-25 03:48:27,926 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-25 03:48:27,926 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-25 03:48:27,926 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-25 03:48:27,926 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-25 03:48:27,927 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-25 03:48:27,927 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-25 03:48:27,927 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-25 03:48:27,927 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-25 03:48:27,927 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-25 03:48:27,927 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-25 03:48:27,928 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-25 03:48:27,928 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-25 03:48:27,928 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-25 03:48:27,928 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-25 03:48:27,928 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-25 03:48:27,928 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-25 03:48:27,929 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-25 03:48:27,929 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-25 03:48:27,929 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-25 03:48:27,930 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-25 03:48:27,930 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-25 03:48:27,966 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-25 03:48:27,978 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-25 03:48:27,982 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-25 03:48:27,983 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-25 03:48:27,984 INFO L276 PluginConnector]: CDTParser initialized [2018-01-25 03:48:27,985 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-01_true-unreach-call_true-valid-memsafety.i [2018-01-25 03:48:28,185 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-25 03:48:28,192 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-25 03:48:28,193 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-25 03:48:28,193 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-25 03:48:28,199 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-25 03:48:28,200 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 03:48:28" (1/1) ... [2018-01-25 03:48:28,203 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@157a1731 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:48:28, skipping insertion in model container [2018-01-25 03:48:28,203 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 03:48:28" (1/1) ... [2018-01-25 03:48:28,217 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 03:48:28,259 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 03:48:28,390 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 03:48:28,418 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 03:48:28,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:48:28 WrapperNode [2018-01-25 03:48:28,426 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-25 03:48:28,427 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-25 03:48:28,427 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-25 03:48:28,427 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-25 03:48:28,438 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:48:28" (1/1) ... [2018-01-25 03:48:28,438 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:48:28" (1/1) ... [2018-01-25 03:48:28,451 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:48:28" (1/1) ... [2018-01-25 03:48:28,452 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:48:28" (1/1) ... [2018-01-25 03:48:28,462 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:48:28" (1/1) ... [2018-01-25 03:48:28,469 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:48:28" (1/1) ... [2018-01-25 03:48:28,471 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:48:28" (1/1) ... [2018-01-25 03:48:28,474 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-25 03:48:28,475 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-25 03:48:28,475 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-25 03:48:28,475 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-25 03:48:28,477 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:48:28" (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 03:48:28,530 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-25 03:48:28,531 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-25 03:48:28,531 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-25 03:48:28,531 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-25 03:48:28,531 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-25 03:48:28,531 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-25 03:48:28,531 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-25 03:48:28,532 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-25 03:48:28,532 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-25 03:48:28,532 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-25 03:48:28,532 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-25 03:48:28,532 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-25 03:48:28,532 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-25 03:48:28,533 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-25 03:48:28,533 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-25 03:48:29,145 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-25 03:48:29,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 03:48:29 BoogieIcfgContainer [2018-01-25 03:48:29,146 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-25 03:48:29,147 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-25 03:48:29,147 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-25 03:48:29,149 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-25 03:48:29,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.01 03:48:28" (1/3) ... [2018-01-25 03:48:29,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bb7ecf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 03:48:29, skipping insertion in model container [2018-01-25 03:48:29,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:48:28" (2/3) ... [2018-01-25 03:48:29,151 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bb7ecf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 03:48:29, skipping insertion in model container [2018-01-25 03:48:29,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 03:48:29" (3/3) ... [2018-01-25 03:48:29,153 INFO L105 eAbstractionObserver]: Analyzing ICFG sll-01_true-unreach-call_true-valid-memsafety.i [2018-01-25 03:48:29,160 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-25 03:48:29,166 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 63 error locations. [2018-01-25 03:48:29,208 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-25 03:48:29,208 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-25 03:48:29,208 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-25 03:48:29,208 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-25 03:48:29,208 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-25 03:48:29,208 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-25 03:48:29,208 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-25 03:48:29,208 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-25 03:48:29,209 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-25 03:48:29,231 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states. [2018-01-25 03:48:29,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-25 03:48:29,236 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:48:29,237 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:48:29,237 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr62EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:48:29,241 INFO L82 PathProgramCache]: Analyzing trace with hash 1781428784, now seen corresponding path program 1 times [2018-01-25 03:48:29,243 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:48:29,285 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:48:29,285 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:48:29,285 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:48:29,286 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:48:29,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:48:29,327 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:48:29,389 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 03:48:29,390 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:48:29,391 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 03:48:29,391 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:48:29,393 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 03:48:29,404 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 03:48:29,404 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 03:48:29,406 INFO L87 Difference]: Start difference. First operand 183 states. Second operand 4 states. [2018-01-25 03:48:29,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:48:29,812 INFO L93 Difference]: Finished difference Result 384 states and 511 transitions. [2018-01-25 03:48:29,812 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 03:48:29,814 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-25 03:48:29,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:48:29,827 INFO L225 Difference]: With dead ends: 384 [2018-01-25 03:48:29,827 INFO L226 Difference]: Without dead ends: 206 [2018-01-25 03:48:29,832 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 03:48:29,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2018-01-25 03:48:29,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 176. [2018-01-25 03:48:29,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2018-01-25 03:48:29,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 188 transitions. [2018-01-25 03:48:29,876 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 188 transitions. Word has length 8 [2018-01-25 03:48:29,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:48:29,876 INFO L432 AbstractCegarLoop]: Abstraction has 176 states and 188 transitions. [2018-01-25 03:48:29,876 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 03:48:29,876 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 188 transitions. [2018-01-25 03:48:29,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-25 03:48:29,877 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:48:29,877 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:48:29,877 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr62EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:48:29,877 INFO L82 PathProgramCache]: Analyzing trace with hash 1781428785, now seen corresponding path program 1 times [2018-01-25 03:48:29,877 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:48:29,878 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:48:29,878 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:48:29,878 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:48:29,879 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:48:29,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:48:29,901 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:48:30,003 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 03:48:30,003 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:48:30,003 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 03:48:30,004 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:48:30,005 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 03:48:30,006 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 03:48:30,006 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 03:48:30,006 INFO L87 Difference]: Start difference. First operand 176 states and 188 transitions. Second operand 4 states. [2018-01-25 03:48:30,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:48:30,182 INFO L93 Difference]: Finished difference Result 209 states and 221 transitions. [2018-01-25 03:48:30,182 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-25 03:48:30,182 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-25 03:48:30,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:48:30,184 INFO L225 Difference]: With dead ends: 209 [2018-01-25 03:48:30,184 INFO L226 Difference]: Without dead ends: 199 [2018-01-25 03:48:30,185 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 03:48:30,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2018-01-25 03:48:30,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 188. [2018-01-25 03:48:30,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2018-01-25 03:48:30,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 207 transitions. [2018-01-25 03:48:30,196 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 207 transitions. Word has length 8 [2018-01-25 03:48:30,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:48:30,196 INFO L432 AbstractCegarLoop]: Abstraction has 188 states and 207 transitions. [2018-01-25 03:48:30,196 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 03:48:30,196 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 207 transitions. [2018-01-25 03:48:30,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-01-25 03:48:30,197 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:48:30,197 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:48:30,197 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr62EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:48:30,198 INFO L82 PathProgramCache]: Analyzing trace with hash 1247402511, now seen corresponding path program 1 times [2018-01-25 03:48:30,198 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:48:30,198 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:48:30,199 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:48:30,199 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:48:30,199 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:48:30,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:48:30,218 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:48:30,275 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 03:48:30,275 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:48:30,275 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 03:48:30,275 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:48:30,275 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 03:48:30,276 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 03:48:30,276 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 03:48:30,276 INFO L87 Difference]: Start difference. First operand 188 states and 207 transitions. Second operand 5 states. [2018-01-25 03:48:30,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:48:30,700 INFO L93 Difference]: Finished difference Result 320 states and 347 transitions. [2018-01-25 03:48:30,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 03:48:30,701 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2018-01-25 03:48:30,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:48:30,703 INFO L225 Difference]: With dead ends: 320 [2018-01-25 03:48:30,703 INFO L226 Difference]: Without dead ends: 319 [2018-01-25 03:48:30,704 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 03:48:30,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2018-01-25 03:48:30,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 187. [2018-01-25 03:48:30,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-01-25 03:48:30,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 206 transitions. [2018-01-25 03:48:30,721 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 206 transitions. Word has length 17 [2018-01-25 03:48:30,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:48:30,722 INFO L432 AbstractCegarLoop]: Abstraction has 187 states and 206 transitions. [2018-01-25 03:48:30,722 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 03:48:30,722 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 206 transitions. [2018-01-25 03:48:30,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-01-25 03:48:30,723 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:48:30,723 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:48:30,723 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr62EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:48:30,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1247402512, now seen corresponding path program 1 times [2018-01-25 03:48:30,724 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:48:30,725 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:48:30,725 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:48:30,725 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:48:30,725 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:48:30,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:48:30,742 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:48:30,805 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 03:48:30,805 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:48:30,806 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 03:48:30,806 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:48:30,806 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 03:48:30,806 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 03:48:30,806 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 03:48:30,806 INFO L87 Difference]: Start difference. First operand 187 states and 206 transitions. Second operand 5 states. [2018-01-25 03:48:31,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:48:31,107 INFO L93 Difference]: Finished difference Result 349 states and 386 transitions. [2018-01-25 03:48:31,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 03:48:31,108 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2018-01-25 03:48:31,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:48:31,110 INFO L225 Difference]: With dead ends: 349 [2018-01-25 03:48:31,110 INFO L226 Difference]: Without dead ends: 348 [2018-01-25 03:48:31,111 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 03:48:31,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2018-01-25 03:48:31,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 186. [2018-01-25 03:48:31,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2018-01-25 03:48:31,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 205 transitions. [2018-01-25 03:48:31,125 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 205 transitions. Word has length 17 [2018-01-25 03:48:31,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:48:31,126 INFO L432 AbstractCegarLoop]: Abstraction has 186 states and 205 transitions. [2018-01-25 03:48:31,126 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 03:48:31,126 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 205 transitions. [2018-01-25 03:48:31,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-01-25 03:48:31,126 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:48:31,126 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:48:31,127 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr62EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:48:31,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1311177125, now seen corresponding path program 1 times [2018-01-25 03:48:31,127 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:48:31,128 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:48:31,128 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:48:31,128 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:48:31,128 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:48:31,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:48:31,150 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:48:31,258 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 03:48:31,259 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:48:31,259 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-01-25 03:48:31,259 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:48:31,259 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-25 03:48:31,259 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-25 03:48:31,260 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-01-25 03:48:31,260 INFO L87 Difference]: Start difference. First operand 186 states and 205 transitions. Second operand 8 states. [2018-01-25 03:48:32,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:48:32,480 INFO L93 Difference]: Finished difference Result 323 states and 348 transitions. [2018-01-25 03:48:32,480 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-25 03:48:32,480 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2018-01-25 03:48:32,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:48:32,482 INFO L225 Difference]: With dead ends: 323 [2018-01-25 03:48:32,482 INFO L226 Difference]: Without dead ends: 322 [2018-01-25 03:48:32,482 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-01-25 03:48:32,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2018-01-25 03:48:32,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 185. [2018-01-25 03:48:32,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-01-25 03:48:32,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 204 transitions. [2018-01-25 03:48:32,494 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 204 transitions. Word has length 20 [2018-01-25 03:48:32,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:48:32,495 INFO L432 AbstractCegarLoop]: Abstraction has 185 states and 204 transitions. [2018-01-25 03:48:32,495 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-25 03:48:32,495 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 204 transitions. [2018-01-25 03:48:32,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-01-25 03:48:32,496 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:48:32,496 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:48:32,496 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr62EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:48:32,496 INFO L82 PathProgramCache]: Analyzing trace with hash 1311177126, now seen corresponding path program 1 times [2018-01-25 03:48:32,497 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:48:32,497 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:48:32,497 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:48:32,498 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:48:32,498 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:48:32,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:48:32,513 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:48:32,686 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 03:48:32,686 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:48:32,686 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-01-25 03:48:32,687 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:48:32,687 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-25 03:48:32,687 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-25 03:48:32,687 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-01-25 03:48:32,688 INFO L87 Difference]: Start difference. First operand 185 states and 204 transitions. Second operand 8 states. [2018-01-25 03:48:33,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:48:33,285 INFO L93 Difference]: Finished difference Result 325 states and 350 transitions. [2018-01-25 03:48:33,286 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-25 03:48:33,286 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2018-01-25 03:48:33,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:48:33,287 INFO L225 Difference]: With dead ends: 325 [2018-01-25 03:48:33,287 INFO L226 Difference]: Without dead ends: 324 [2018-01-25 03:48:33,288 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-01-25 03:48:33,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2018-01-25 03:48:33,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 184. [2018-01-25 03:48:33,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2018-01-25 03:48:33,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 203 transitions. [2018-01-25 03:48:33,298 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 203 transitions. Word has length 20 [2018-01-25 03:48:33,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:48:33,299 INFO L432 AbstractCegarLoop]: Abstraction has 184 states and 203 transitions. [2018-01-25 03:48:33,299 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-25 03:48:33,299 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 203 transitions. [2018-01-25 03:48:33,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-01-25 03:48:33,300 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:48:33,300 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:48:33,300 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr62EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:48:33,300 INFO L82 PathProgramCache]: Analyzing trace with hash -1745739826, now seen corresponding path program 1 times [2018-01-25 03:48:33,300 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:48:33,301 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:48:33,301 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:48:33,301 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:48:33,301 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:48:33,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:48:33,310 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:48:33,395 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 03:48:33,395 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:48:33,395 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-25 03:48:33,395 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:48:33,396 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 03:48:33,396 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 03:48:33,396 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 03:48:33,396 INFO L87 Difference]: Start difference. First operand 184 states and 203 transitions. Second operand 5 states. [2018-01-25 03:48:33,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:48:33,572 INFO L93 Difference]: Finished difference Result 428 states and 470 transitions. [2018-01-25 03:48:33,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 03:48:33,572 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2018-01-25 03:48:33,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:48:33,574 INFO L225 Difference]: With dead ends: 428 [2018-01-25 03:48:33,574 INFO L226 Difference]: Without dead ends: 272 [2018-01-25 03:48:33,575 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-25 03:48:33,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2018-01-25 03:48:33,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 188. [2018-01-25 03:48:33,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2018-01-25 03:48:33,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 207 transitions. [2018-01-25 03:48:33,583 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 207 transitions. Word has length 26 [2018-01-25 03:48:33,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:48:33,584 INFO L432 AbstractCegarLoop]: Abstraction has 188 states and 207 transitions. [2018-01-25 03:48:33,584 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 03:48:33,584 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 207 transitions. [2018-01-25 03:48:33,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-01-25 03:48:33,584 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:48:33,585 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 03:48:33,585 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr62EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:48:33,585 INFO L82 PathProgramCache]: Analyzing trace with hash 33879827, now seen corresponding path program 1 times [2018-01-25 03:48:33,585 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:48:33,586 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:48:33,586 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:48:33,586 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:48:33,586 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:48:33,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:48:33,598 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:48:33,697 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 03:48:33,697 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:48:33,697 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 03:48:33,697 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:48:33,698 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 03:48:33,698 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 03:48:33,698 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 03:48:33,698 INFO L87 Difference]: Start difference. First operand 188 states and 207 transitions. Second operand 5 states. [2018-01-25 03:48:33,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:48:33,886 INFO L93 Difference]: Finished difference Result 210 states and 224 transitions. [2018-01-25 03:48:33,886 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-25 03:48:33,886 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2018-01-25 03:48:33,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:48:33,887 INFO L225 Difference]: With dead ends: 210 [2018-01-25 03:48:33,887 INFO L226 Difference]: Without dead ends: 198 [2018-01-25 03:48:33,888 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 2 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 03:48:33,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2018-01-25 03:48:33,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 180. [2018-01-25 03:48:33,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2018-01-25 03:48:33,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 199 transitions. [2018-01-25 03:48:33,896 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 199 transitions. Word has length 28 [2018-01-25 03:48:33,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:48:33,898 INFO L432 AbstractCegarLoop]: Abstraction has 180 states and 199 transitions. [2018-01-25 03:48:33,898 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 03:48:33,898 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 199 transitions. [2018-01-25 03:48:33,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-01-25 03:48:33,899 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:48:33,899 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 03:48:33,899 INFO L371 AbstractCegarLoop]: === Iteration 9 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr62EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:48:33,900 INFO L82 PathProgramCache]: Analyzing trace with hash 33879828, now seen corresponding path program 1 times [2018-01-25 03:48:33,900 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:48:33,900 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:48:33,900 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:48:33,900 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:48:33,901 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:48:33,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:48:33,911 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:48:34,110 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 03:48:34,111 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:48:34,111 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-25 03:48:34,111 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:48:34,111 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-25 03:48:34,111 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-25 03:48:34,111 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-01-25 03:48:34,112 INFO L87 Difference]: Start difference. First operand 180 states and 199 transitions. Second operand 7 states. [2018-01-25 03:48:34,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:48:34,419 INFO L93 Difference]: Finished difference Result 236 states and 251 transitions. [2018-01-25 03:48:34,419 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 03:48:34,419 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2018-01-25 03:48:34,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:48:34,421 INFO L225 Difference]: With dead ends: 236 [2018-01-25 03:48:34,421 INFO L226 Difference]: Without dead ends: 232 [2018-01-25 03:48:34,421 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-01-25 03:48:34,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2018-01-25 03:48:34,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 207. [2018-01-25 03:48:34,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2018-01-25 03:48:34,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 234 transitions. [2018-01-25 03:48:34,432 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 234 transitions. Word has length 28 [2018-01-25 03:48:34,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:48:34,432 INFO L432 AbstractCegarLoop]: Abstraction has 207 states and 234 transitions. [2018-01-25 03:48:34,432 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-25 03:48:34,433 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 234 transitions. [2018-01-25 03:48:34,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-01-25 03:48:34,434 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:48:34,434 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:48:34,434 INFO L371 AbstractCegarLoop]: === Iteration 10 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr62EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:48:34,434 INFO L82 PathProgramCache]: Analyzing trace with hash -3315817, now seen corresponding path program 1 times [2018-01-25 03:48:34,434 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:48:34,435 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:48:34,435 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:48:34,436 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:48:34,436 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:48:34,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:48:34,454 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:48:34,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:48:34,506 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:48:34,506 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-25 03:48:34,506 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:48:34,507 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-25 03:48:34,507 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-25 03:48:34,507 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-25 03:48:34,507 INFO L87 Difference]: Start difference. First operand 207 states and 234 transitions. Second operand 6 states. [2018-01-25 03:48:34,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:48:34,800 INFO L93 Difference]: Finished difference Result 296 states and 336 transitions. [2018-01-25 03:48:34,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-25 03:48:34,906 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2018-01-25 03:48:34,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:48:34,908 INFO L225 Difference]: With dead ends: 296 [2018-01-25 03:48:34,908 INFO L226 Difference]: Without dead ends: 295 [2018-01-25 03:48:34,908 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-01-25 03:48:34,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2018-01-25 03:48:34,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 206. [2018-01-25 03:48:34,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2018-01-25 03:48:34,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 233 transitions. [2018-01-25 03:48:34,920 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 233 transitions. Word has length 31 [2018-01-25 03:48:34,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:48:34,920 INFO L432 AbstractCegarLoop]: Abstraction has 206 states and 233 transitions. [2018-01-25 03:48:34,921 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-25 03:48:34,921 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 233 transitions. [2018-01-25 03:48:34,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-01-25 03:48:34,922 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:48:34,922 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:48:34,922 INFO L371 AbstractCegarLoop]: === Iteration 11 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr62EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:48:34,923 INFO L82 PathProgramCache]: Analyzing trace with hash -3315816, now seen corresponding path program 1 times [2018-01-25 03:48:34,923 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:48:34,925 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:48:34,925 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:48:34,925 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:48:34,926 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:48:34,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:48:34,936 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:48:35,057 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 03:48:35,058 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:48:35,058 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-25 03:48:35,058 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:48:35,058 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-25 03:48:35,059 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-25 03:48:35,059 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-25 03:48:35,059 INFO L87 Difference]: Start difference. First operand 206 states and 233 transitions. Second operand 6 states. [2018-01-25 03:48:35,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:48:35,480 INFO L93 Difference]: Finished difference Result 326 states and 374 transitions. [2018-01-25 03:48:35,480 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-25 03:48:35,480 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2018-01-25 03:48:35,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:48:35,482 INFO L225 Difference]: With dead ends: 326 [2018-01-25 03:48:35,482 INFO L226 Difference]: Without dead ends: 317 [2018-01-25 03:48:35,482 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2018-01-25 03:48:35,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2018-01-25 03:48:35,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 191. [2018-01-25 03:48:35,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-01-25 03:48:35,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 217 transitions. [2018-01-25 03:48:35,492 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 217 transitions. Word has length 31 [2018-01-25 03:48:35,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:48:35,492 INFO L432 AbstractCegarLoop]: Abstraction has 191 states and 217 transitions. [2018-01-25 03:48:35,492 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-25 03:48:35,492 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 217 transitions. [2018-01-25 03:48:35,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-01-25 03:48:35,493 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:48:35,494 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, 1, 1, 1] [2018-01-25 03:48:35,494 INFO L371 AbstractCegarLoop]: === Iteration 12 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr62EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:48:35,494 INFO L82 PathProgramCache]: Analyzing trace with hash 253584673, now seen corresponding path program 1 times [2018-01-25 03:48:35,494 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:48:35,495 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:48:35,495 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:48:35,495 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:48:35,496 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:48:35,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:48:35,504 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:48:35,577 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 03:48:35,577 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:48:35,578 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-25 03:48:35,578 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:48:35,578 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 03:48:35,578 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 03:48:35,578 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 03:48:35,579 INFO L87 Difference]: Start difference. First operand 191 states and 217 transitions. Second operand 5 states. [2018-01-25 03:48:35,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:48:35,810 INFO L93 Difference]: Finished difference Result 269 states and 294 transitions. [2018-01-25 03:48:35,811 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 03:48:35,811 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2018-01-25 03:48:35,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:48:35,812 INFO L225 Difference]: With dead ends: 269 [2018-01-25 03:48:35,812 INFO L226 Difference]: Without dead ends: 212 [2018-01-25 03:48:35,813 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-25 03:48:35,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2018-01-25 03:48:35,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 191. [2018-01-25 03:48:35,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-01-25 03:48:35,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 215 transitions. [2018-01-25 03:48:35,825 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 215 transitions. Word has length 36 [2018-01-25 03:48:35,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:48:35,825 INFO L432 AbstractCegarLoop]: Abstraction has 191 states and 215 transitions. [2018-01-25 03:48:35,825 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 03:48:35,825 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 215 transitions. [2018-01-25 03:48:35,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-01-25 03:48:35,827 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:48:35,827 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:48:35,827 INFO L371 AbstractCegarLoop]: === Iteration 13 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr62EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:48:35,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1898871922, now seen corresponding path program 1 times [2018-01-25 03:48:35,827 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:48:35,828 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:48:35,828 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:48:35,829 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:48:35,829 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:48:35,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:48:35,846 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:48:36,051 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 03:48:36,052 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:48:36,052 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-01-25 03:48:36,052 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:48:36,053 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-25 03:48:36,053 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-25 03:48:36,053 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2018-01-25 03:48:36,053 INFO L87 Difference]: Start difference. First operand 191 states and 215 transitions. Second operand 10 states. [2018-01-25 03:48:36,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:48:36,669 INFO L93 Difference]: Finished difference Result 420 states and 467 transitions. [2018-01-25 03:48:36,669 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-01-25 03:48:36,670 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 42 [2018-01-25 03:48:36,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:48:36,671 INFO L225 Difference]: With dead ends: 420 [2018-01-25 03:48:36,671 INFO L226 Difference]: Without dead ends: 309 [2018-01-25 03:48:36,672 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2018-01-25 03:48:36,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2018-01-25 03:48:36,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 232. [2018-01-25 03:48:36,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2018-01-25 03:48:36,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 260 transitions. [2018-01-25 03:48:36,683 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 260 transitions. Word has length 42 [2018-01-25 03:48:36,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:48:36,683 INFO L432 AbstractCegarLoop]: Abstraction has 232 states and 260 transitions. [2018-01-25 03:48:36,683 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-25 03:48:36,683 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 260 transitions. [2018-01-25 03:48:36,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-01-25 03:48:36,684 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:48:36,684 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:48:36,684 INFO L371 AbstractCegarLoop]: === Iteration 14 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr62EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:48:36,685 INFO L82 PathProgramCache]: Analyzing trace with hash 1781092500, now seen corresponding path program 1 times [2018-01-25 03:48:36,685 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:48:36,686 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:48:36,686 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:48:36,686 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:48:36,686 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:48:36,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:48:36,700 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:48:36,780 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 03:48:36,781 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:48:36,781 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 03:48:36,781 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:48:36,782 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 03:48:36,782 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 03:48:36,782 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 03:48:36,782 INFO L87 Difference]: Start difference. First operand 232 states and 260 transitions. Second operand 5 states. [2018-01-25 03:48:37,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:48:37,098 INFO L93 Difference]: Finished difference Result 344 states and 387 transitions. [2018-01-25 03:48:37,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 03:48:37,098 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2018-01-25 03:48:37,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:48:37,099 INFO L225 Difference]: With dead ends: 344 [2018-01-25 03:48:37,099 INFO L226 Difference]: Without dead ends: 343 [2018-01-25 03:48:37,100 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 03:48:37,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2018-01-25 03:48:37,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 231. [2018-01-25 03:48:37,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2018-01-25 03:48:37,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 259 transitions. [2018-01-25 03:48:37,110 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 259 transitions. Word has length 43 [2018-01-25 03:48:37,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:48:37,110 INFO L432 AbstractCegarLoop]: Abstraction has 231 states and 259 transitions. [2018-01-25 03:48:37,110 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 03:48:37,110 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 259 transitions. [2018-01-25 03:48:37,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-01-25 03:48:37,111 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:48:37,112 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:48:37,112 INFO L371 AbstractCegarLoop]: === Iteration 15 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr62EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:48:37,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1781092501, now seen corresponding path program 1 times [2018-01-25 03:48:37,112 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:48:37,113 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:48:37,113 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:48:37,113 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:48:37,113 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:48:37,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:48:37,124 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:48:37,225 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 03:48:37,225 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:48:37,225 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 03:48:37,225 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:48:37,226 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 03:48:37,226 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 03:48:37,226 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 03:48:37,226 INFO L87 Difference]: Start difference. First operand 231 states and 259 transitions. Second operand 5 states. [2018-01-25 03:48:37,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:48:37,568 INFO L93 Difference]: Finished difference Result 376 states and 426 transitions. [2018-01-25 03:48:37,568 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 03:48:37,568 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2018-01-25 03:48:37,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:48:37,570 INFO L225 Difference]: With dead ends: 376 [2018-01-25 03:48:37,570 INFO L226 Difference]: Without dead ends: 375 [2018-01-25 03:48:37,571 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-25 03:48:37,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2018-01-25 03:48:37,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 230. [2018-01-25 03:48:37,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2018-01-25 03:48:37,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 258 transitions. [2018-01-25 03:48:37,588 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 258 transitions. Word has length 43 [2018-01-25 03:48:37,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:48:37,588 INFO L432 AbstractCegarLoop]: Abstraction has 230 states and 258 transitions. [2018-01-25 03:48:37,588 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 03:48:37,589 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 258 transitions. [2018-01-25 03:48:37,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-01-25 03:48:37,589 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:48:37,590 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:48:37,590 INFO L371 AbstractCegarLoop]: === Iteration 16 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr62EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:48:37,590 INFO L82 PathProgramCache]: Analyzing trace with hash -661031902, now seen corresponding path program 1 times [2018-01-25 03:48:37,590 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:48:37,591 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:48:37,591 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:48:37,591 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:48:37,591 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:48:37,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:48:37,602 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:48:37,740 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:48:37,740 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-25 03:48:37,741 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-25 03:48:37,741 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 45 with the following transitions: [2018-01-25 03:48:37,743 INFO L201 CegarAbsIntRunner]: [0], [1], [5], [6], [7], [13], [18], [22], [28], [31], [32], [58], [59], [62], [67], [68], [71], [77], [81], [87], [91], [93], [96], [207], [211], [216], [220], [228], [234], [235], [236], [238], [242], [246], [321], [326], [330], [336], [339], [438], [439], [440] [2018-01-25 03:48:37,795 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-25 03:48:37,796 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