java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-01_false-unreach-call_false-valid-deref.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 21:04:43,904 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 21:04:43,906 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 21:04:43,921 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 21:04:43,922 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 21:04:43,923 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 21:04:43,924 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 21:04:43,925 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 21:04:43,927 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 21:04:43,928 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 21:04:43,929 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 21:04:43,929 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 21:04:43,930 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 21:04:43,932 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 21:04:43,933 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 21:04:43,935 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 21:04:43,937 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 21:04:43,939 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 21:04:43,940 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 21:04:43,942 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 21:04:43,944 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-24 21:04:43,944 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-24 21:04:43,945 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-24 21:04:43,946 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-24 21:04:43,947 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-24 21:04:43,948 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-24 21:04:43,948 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-24 21:04:43,949 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-24 21:04:43,949 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-24 21:04:43,949 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 21:04:43,950 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 21:04:43,950 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf [2018-01-24 21:04:43,958 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 21:04:43,959 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 21:04:43,959 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 21:04:43,960 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 21:04:43,960 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 21:04:43,960 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-24 21:04:43,960 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 21:04:43,960 INFO L133 SettingsManager]: * Precise comparison operator=true [2018-01-24 21:04:43,960 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 21:04:43,961 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 21:04:43,961 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 21:04:43,961 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 21:04:43,961 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 21:04:43,961 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 21:04:43,961 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 21:04:43,961 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 21:04:43,961 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 21:04:43,962 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 21:04:43,962 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 21:04:43,962 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 21:04:43,962 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 21:04:43,962 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 21:04:43,962 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 21:04:43,962 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 21:04:43,963 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 21:04:43,963 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 21:04:43,963 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 21:04:43,963 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 21:04:43,963 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 21:04:43,963 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 21:04:43,964 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-24 21:04:43,964 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 21:04:43,964 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 21:04:43,964 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 21:04:43,964 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-24 21:04:43,965 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 21:04:43,965 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 21:04:43,998 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 21:04:44,009 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 21:04:44,012 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 21:04:44,013 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 21:04:44,014 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 21:04:44,014 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-01_false-unreach-call_false-valid-deref.i [2018-01-24 21:04:44,167 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 21:04:44,172 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 21:04:44,173 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 21:04:44,173 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 21:04:44,178 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 21:04:44,178 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 09:04:44" (1/1) ... [2018-01-24 21:04:44,180 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5977c944 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 09:04:44, skipping insertion in model container [2018-01-24 21:04:44,181 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 09:04:44" (1/1) ... [2018-01-24 21:04:44,192 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 21:04:44,229 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 21:04:44,349 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 21:04:44,374 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 21:04:44,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 09:04:44 WrapperNode [2018-01-24 21:04:44,385 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 21:04:44,386 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 21:04:44,386 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 21:04:44,386 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 21:04:44,399 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 09:04:44" (1/1) ... [2018-01-24 21:04:44,399 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 09:04:44" (1/1) ... [2018-01-24 21:04:44,409 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 09:04:44" (1/1) ... [2018-01-24 21:04:44,409 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 09:04:44" (1/1) ... [2018-01-24 21:04:44,418 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 09:04:44" (1/1) ... [2018-01-24 21:04:44,425 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 09:04:44" (1/1) ... [2018-01-24 21:04:44,427 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 09:04:44" (1/1) ... [2018-01-24 21:04:44,430 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 21:04:44,431 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 21:04:44,431 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 21:04:44,431 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 21:04:44,432 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 09:04:44" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 21:04:44,491 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 21:04:44,492 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 21:04:44,492 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 21:04:44,492 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-24 21:04:44,492 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-24 21:04:44,493 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 21:04:44,493 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 21:04:44,493 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 21:04:44,493 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-24 21:04:44,493 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-24 21:04:44,493 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 21:04:44,493 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-24 21:04:44,494 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 21:04:44,494 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 21:04:44,494 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 21:04:45,015 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 21:04:45,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 09:04:45 BoogieIcfgContainer [2018-01-24 21:04:45,016 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 21:04:45,017 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-24 21:04:45,018 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-24 21:04:45,020 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-24 21:04:45,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.01 09:04:44" (1/3) ... [2018-01-24 21:04:45,021 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12775585 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 09:04:45, skipping insertion in model container [2018-01-24 21:04:45,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 09:04:44" (2/3) ... [2018-01-24 21:04:45,022 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12775585 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 09:04:45, skipping insertion in model container [2018-01-24 21:04:45,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 09:04:45" (3/3) ... [2018-01-24 21:04:45,023 INFO L105 eAbstractionObserver]: Analyzing ICFG sll-01_false-unreach-call_false-valid-deref.i [2018-01-24 21:04:45,032 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-24 21:04:45,039 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 65 error locations. [2018-01-24 21:04:45,089 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-24 21:04:45,089 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-24 21:04:45,090 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-24 21:04:45,090 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-24 21:04:45,090 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-24 21:04:45,090 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-24 21:04:45,090 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-24 21:04:45,090 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-24 21:04:45,091 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-24 21:04:45,113 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states. [2018-01-24 21:04:45,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-24 21:04:45,119 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 21:04:45,120 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 21:04:45,120 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, 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]=== [2018-01-24 21:04:45,125 INFO L82 PathProgramCache]: Analyzing trace with hash 2039196070, now seen corresponding path program 1 times [2018-01-24 21:04:45,127 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 21:04:45,182 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:04:45,183 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 21:04:45,183 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:04:45,183 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 21:04:45,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 21:04:45,227 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 21:04:45,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 21:04:45,305 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 21:04:45,305 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 21:04:45,306 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 21:04:45,309 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 21:04:45,324 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 21:04:45,324 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 21:04:45,327 INFO L87 Difference]: Start difference. First operand 188 states. Second operand 4 states. [2018-01-24 21:04:45,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 21:04:45,705 INFO L93 Difference]: Finished difference Result 394 states and 523 transitions. [2018-01-24 21:04:45,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 21:04:45,706 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-24 21:04:45,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 21:04:45,718 INFO L225 Difference]: With dead ends: 394 [2018-01-24 21:04:45,719 INFO L226 Difference]: Without dead ends: 211 [2018-01-24 21:04:45,723 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-24 21:04:45,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-01-24 21:04:45,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 181. [2018-01-24 21:04:45,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-01-24 21:04:45,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 194 transitions. [2018-01-24 21:04:45,769 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 194 transitions. Word has length 8 [2018-01-24 21:04:45,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 21:04:45,770 INFO L432 AbstractCegarLoop]: Abstraction has 181 states and 194 transitions. [2018-01-24 21:04:45,770 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 21:04:45,770 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 194 transitions. [2018-01-24 21:04:45,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-24 21:04:45,770 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 21:04:45,771 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 21:04:45,771 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, 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]=== [2018-01-24 21:04:45,771 INFO L82 PathProgramCache]: Analyzing trace with hash 2039196071, now seen corresponding path program 1 times [2018-01-24 21:04:45,771 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 21:04:45,772 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:04:45,773 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 21:04:45,773 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:04:45,773 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 21:04:45,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 21:04:45,793 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 21:04:45,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 21:04:45,893 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 21:04:45,893 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 21:04:45,893 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 21:04:45,895 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 21:04:45,895 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 21:04:45,895 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 21:04:45,896 INFO L87 Difference]: Start difference. First operand 181 states and 194 transitions. Second operand 4 states. [2018-01-24 21:04:46,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 21:04:46,077 INFO L93 Difference]: Finished difference Result 214 states and 227 transitions. [2018-01-24 21:04:46,077 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 21:04:46,077 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-24 21:04:46,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 21:04:46,079 INFO L225 Difference]: With dead ends: 214 [2018-01-24 21:04:46,079 INFO L226 Difference]: Without dead ends: 204 [2018-01-24 21:04:46,080 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-24 21:04:46,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2018-01-24 21:04:46,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 193. [2018-01-24 21:04:46,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-01-24 21:04:46,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 213 transitions. [2018-01-24 21:04:46,096 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 213 transitions. Word has length 8 [2018-01-24 21:04:46,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 21:04:46,096 INFO L432 AbstractCegarLoop]: Abstraction has 193 states and 213 transitions. [2018-01-24 21:04:46,097 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 21:04:46,097 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 213 transitions. [2018-01-24 21:04:46,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-01-24 21:04:46,097 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 21:04:46,098 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 21:04:46,098 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, 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]=== [2018-01-24 21:04:46,098 INFO L82 PathProgramCache]: Analyzing trace with hash -1799051431, now seen corresponding path program 1 times [2018-01-24 21:04:46,098 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 21:04:46,099 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:04:46,099 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 21:04:46,100 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:04:46,100 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 21:04:46,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 21:04:46,118 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 21:04:46,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 21:04:46,159 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 21:04:46,159 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 21:04:46,160 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 21:04:46,160 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 21:04:46,160 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 21:04:46,160 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 21:04:46,160 INFO L87 Difference]: Start difference. First operand 193 states and 213 transitions. Second operand 5 states. [2018-01-24 21:04:46,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 21:04:46,618 INFO L93 Difference]: Finished difference Result 330 states and 359 transitions. [2018-01-24 21:04:46,636 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 21:04:46,636 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2018-01-24 21:04:46,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 21:04:46,638 INFO L225 Difference]: With dead ends: 330 [2018-01-24 21:04:46,638 INFO L226 Difference]: Without dead ends: 329 [2018-01-24 21:04:46,639 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-24 21:04:46,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2018-01-24 21:04:46,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 192. [2018-01-24 21:04:46,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2018-01-24 21:04:46,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 212 transitions. [2018-01-24 21:04:46,656 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 212 transitions. Word has length 17 [2018-01-24 21:04:46,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 21:04:46,657 INFO L432 AbstractCegarLoop]: Abstraction has 192 states and 212 transitions. [2018-01-24 21:04:46,657 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 21:04:46,657 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 212 transitions. [2018-01-24 21:04:46,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-01-24 21:04:46,658 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 21:04:46,658 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 21:04:46,659 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, 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]=== [2018-01-24 21:04:46,660 INFO L82 PathProgramCache]: Analyzing trace with hash -1799051430, now seen corresponding path program 1 times [2018-01-24 21:04:46,660 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 21:04:46,661 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:04:46,661 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 21:04:46,661 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:04:46,661 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 21:04:46,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 21:04:46,678 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 21:04:46,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 21:04:46,778 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 21:04:46,778 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 21:04:46,779 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 21:04:46,779 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 21:04:46,779 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 21:04:46,780 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 21:04:46,780 INFO L87 Difference]: Start difference. First operand 192 states and 212 transitions. Second operand 5 states. [2018-01-24 21:04:47,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 21:04:47,047 INFO L93 Difference]: Finished difference Result 359 states and 398 transitions. [2018-01-24 21:04:47,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 21:04:47,048 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2018-01-24 21:04:47,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 21:04:47,049 INFO L225 Difference]: With dead ends: 359 [2018-01-24 21:04:47,049 INFO L226 Difference]: Without dead ends: 358 [2018-01-24 21:04:47,050 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-24 21:04:47,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2018-01-24 21:04:47,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 191. [2018-01-24 21:04:47,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-01-24 21:04:47,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 211 transitions. [2018-01-24 21:04:47,063 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 211 transitions. Word has length 17 [2018-01-24 21:04:47,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 21:04:47,064 INFO L432 AbstractCegarLoop]: Abstraction has 191 states and 211 transitions. [2018-01-24 21:04:47,064 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 21:04:47,064 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 211 transitions. [2018-01-24 21:04:47,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-01-24 21:04:47,064 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 21:04:47,065 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] [2018-01-24 21:04:47,065 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, 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]=== [2018-01-24 21:04:47,065 INFO L82 PathProgramCache]: Analyzing trace with hash 1355722779, now seen corresponding path program 1 times [2018-01-24 21:04:47,065 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 21:04:47,066 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:04:47,066 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 21:04:47,066 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:04:47,066 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 21:04:47,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 21:04:47,080 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 21:04:47,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 21:04:47,168 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 21:04:47,168 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-01-24 21:04:47,168 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 21:04:47,169 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-24 21:04:47,169 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-24 21:04:47,169 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-01-24 21:04:47,169 INFO L87 Difference]: Start difference. First operand 191 states and 211 transitions. Second operand 8 states. [2018-01-24 21:04:47,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 21:04:47,742 INFO L93 Difference]: Finished difference Result 333 states and 360 transitions. [2018-01-24 21:04:47,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-24 21:04:47,742 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2018-01-24 21:04:47,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 21:04:47,744 INFO L225 Difference]: With dead ends: 333 [2018-01-24 21:04:47,744 INFO L226 Difference]: Without dead ends: 332 [2018-01-24 21:04:47,745 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 [2018-01-24 21:04:47,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2018-01-24 21:04:47,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 190. [2018-01-24 21:04:47,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2018-01-24 21:04:47,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 210 transitions. [2018-01-24 21:04:47,758 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 210 transitions. Word has length 20 [2018-01-24 21:04:47,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 21:04:47,758 INFO L432 AbstractCegarLoop]: Abstraction has 190 states and 210 transitions. [2018-01-24 21:04:47,759 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-24 21:04:47,759 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 210 transitions. [2018-01-24 21:04:47,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-01-24 21:04:47,759 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 21:04:47,760 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] [2018-01-24 21:04:47,760 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, 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]=== [2018-01-24 21:04:47,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1355722780, now seen corresponding path program 1 times [2018-01-24 21:04:47,760 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 21:04:47,761 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:04:47,761 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 21:04:47,761 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:04:47,761 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 21:04:47,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 21:04:47,776 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 21:04:47,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 21:04:47,917 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 21:04:47,917 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-01-24 21:04:47,917 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 21:04:47,918 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-24 21:04:47,918 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-24 21:04:47,918 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-01-24 21:04:47,918 INFO L87 Difference]: Start difference. First operand 190 states and 210 transitions. Second operand 8 states. [2018-01-24 21:04:48,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 21:04:48,488 INFO L93 Difference]: Finished difference Result 335 states and 362 transitions. [2018-01-24 21:04:48,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-24 21:04:48,489 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2018-01-24 21:04:48,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 21:04:48,491 INFO L225 Difference]: With dead ends: 335 [2018-01-24 21:04:48,491 INFO L226 Difference]: Without dead ends: 334 [2018-01-24 21:04:48,492 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 [2018-01-24 21:04:48,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2018-01-24 21:04:48,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 189. [2018-01-24 21:04:48,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-01-24 21:04:48,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 209 transitions. [2018-01-24 21:04:48,504 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 209 transitions. Word has length 20 [2018-01-24 21:04:48,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 21:04:48,505 INFO L432 AbstractCegarLoop]: Abstraction has 189 states and 209 transitions. [2018-01-24 21:04:48,505 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-24 21:04:48,505 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 209 transitions. [2018-01-24 21:04:48,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-01-24 21:04:48,506 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 21:04:48,506 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] [2018-01-24 21:04:48,506 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, 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]=== [2018-01-24 21:04:48,507 INFO L82 PathProgramCache]: Analyzing trace with hash -778525244, now seen corresponding path program 1 times [2018-01-24 21:04:48,507 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 21:04:48,508 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:04:48,508 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 21:04:48,508 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:04:48,508 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 21:04:48,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 21:04:48,520 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 21:04:48,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 21:04:48,562 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 21:04:48,562 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-24 21:04:48,563 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 21:04:48,563 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 21:04:48,563 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 21:04:48,563 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 21:04:48,564 INFO L87 Difference]: Start difference. First operand 189 states and 209 transitions. Second operand 5 states. [2018-01-24 21:04:48,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 21:04:48,701 INFO L93 Difference]: Finished difference Result 443 states and 488 transitions. [2018-01-24 21:04:48,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 21:04:48,701 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2018-01-24 21:04:48,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 21:04:48,703 INFO L225 Difference]: With dead ends: 443 [2018-01-24 21:04:48,703 INFO L226 Difference]: Without dead ends: 282 [2018-01-24 21:04:48,704 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-24 21:04:48,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2018-01-24 21:04:48,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 193. [2018-01-24 21:04:48,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-01-24 21:04:48,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 213 transitions. [2018-01-24 21:04:48,716 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 213 transitions. Word has length 26 [2018-01-24 21:04:48,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 21:04:48,716 INFO L432 AbstractCegarLoop]: Abstraction has 193 states and 213 transitions. [2018-01-24 21:04:48,716 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 21:04:48,716 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 213 transitions. [2018-01-24 21:04:48,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-01-24 21:04:48,717 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 21:04:48,718 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 21:04:48,718 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, 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]=== [2018-01-24 21:04:48,718 INFO L82 PathProgramCache]: Analyzing trace with hash 1814157193, now seen corresponding path program 1 times [2018-01-24 21:04:48,718 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 21:04:48,719 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:04:48,719 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 21:04:48,720 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:04:48,720 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 21:04:48,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 21:04:48,731 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 21:04:48,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 21:04:48,797 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 21:04:48,797 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 21:04:48,797 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 21:04:48,797 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 21:04:48,797 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 21:04:48,797 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 21:04:48,798 INFO L87 Difference]: Start difference. First operand 193 states and 213 transitions. Second operand 5 states. [2018-01-24 21:04:48,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 21:04:48,952 INFO L93 Difference]: Finished difference Result 215 states and 230 transitions. [2018-01-24 21:04:48,952 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-24 21:04:48,953 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2018-01-24 21:04:48,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 21:04:48,954 INFO L225 Difference]: With dead ends: 215 [2018-01-24 21:04:48,954 INFO L226 Difference]: Without dead ends: 203 [2018-01-24 21:04:48,954 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 [2018-01-24 21:04:48,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-01-24 21:04:48,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 185. [2018-01-24 21:04:48,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-01-24 21:04:48,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 205 transitions. [2018-01-24 21:04:48,963 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 205 transitions. Word has length 28 [2018-01-24 21:04:48,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 21:04:48,964 INFO L432 AbstractCegarLoop]: Abstraction has 185 states and 205 transitions. [2018-01-24 21:04:48,964 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 21:04:48,964 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 205 transitions. [2018-01-24 21:04:48,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-01-24 21:04:48,965 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 21:04:48,965 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 21:04:48,965 INFO L371 AbstractCegarLoop]: === Iteration 9 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, 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]=== [2018-01-24 21:04:48,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1814157194, now seen corresponding path program 1 times [2018-01-24 21:04:48,966 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 21:04:48,966 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:04:48,967 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 21:04:48,967 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:04:48,967 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 21:04:48,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 21:04:48,979 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 21:04:49,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 21:04:49,095 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 21:04:49,095 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-24 21:04:49,095 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 21:04:49,096 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-24 21:04:49,096 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-24 21:04:49,096 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-01-24 21:04:49,096 INFO L87 Difference]: Start difference. First operand 185 states and 205 transitions. Second operand 7 states. [2018-01-24 21:04:49,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 21:04:49,343 INFO L93 Difference]: Finished difference Result 246 states and 263 transitions. [2018-01-24 21:04:49,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 21:04:49,343 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2018-01-24 21:04:49,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 21:04:49,345 INFO L225 Difference]: With dead ends: 246 [2018-01-24 21:04:49,345 INFO L226 Difference]: Without dead ends: 242 [2018-01-24 21:04:49,345 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 [2018-01-24 21:04:49,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2018-01-24 21:04:49,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 215. [2018-01-24 21:04:49,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2018-01-24 21:04:49,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 246 transitions. [2018-01-24 21:04:49,356 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 246 transitions. Word has length 28 [2018-01-24 21:04:49,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 21:04:49,356 INFO L432 AbstractCegarLoop]: Abstraction has 215 states and 246 transitions. [2018-01-24 21:04:49,357 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-24 21:04:49,357 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 246 transitions. [2018-01-24 21:04:49,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-01-24 21:04:49,358 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 21:04:49,358 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] [2018-01-24 21:04:49,358 INFO L371 AbstractCegarLoop]: === Iteration 10 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, 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]=== [2018-01-24 21:04:49,358 INFO L82 PathProgramCache]: Analyzing trace with hash 1983523681, now seen corresponding path program 1 times [2018-01-24 21:04:49,358 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 21:04:49,359 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:04:49,359 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 21:04:49,360 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:04:49,360 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 21:04:49,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 21:04:49,370 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 21:04:49,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 21:04:49,460 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 21:04:49,460 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-24 21:04:49,461 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 21:04:49,461 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-24 21:04:49,461 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-24 21:04:49,461 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-24 21:04:49,461 INFO L87 Difference]: Start difference. First operand 215 states and 246 transitions. Second operand 6 states. [2018-01-24 21:04:49,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 21:04:49,729 INFO L93 Difference]: Finished difference Result 312 states and 360 transitions. [2018-01-24 21:04:49,729 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-24 21:04:49,729 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2018-01-24 21:04:49,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 21:04:49,730 INFO L225 Difference]: With dead ends: 312 [2018-01-24 21:04:49,730 INFO L226 Difference]: Without dead ends: 311 [2018-01-24 21:04:49,731 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 [2018-01-24 21:04:49,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2018-01-24 21:04:49,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 214. [2018-01-24 21:04:49,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2018-01-24 21:04:49,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 245 transitions. [2018-01-24 21:04:49,743 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 245 transitions. Word has length 31 [2018-01-24 21:04:49,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 21:04:49,744 INFO L432 AbstractCegarLoop]: Abstraction has 214 states and 245 transitions. [2018-01-24 21:04:49,744 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-24 21:04:49,744 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 245 transitions. [2018-01-24 21:04:49,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-01-24 21:04:49,746 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 21:04:49,746 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] [2018-01-24 21:04:49,746 INFO L371 AbstractCegarLoop]: === Iteration 11 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, 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]=== [2018-01-24 21:04:49,746 INFO L82 PathProgramCache]: Analyzing trace with hash 1983523682, now seen corresponding path program 1 times [2018-01-24 21:04:49,746 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 21:04:49,747 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:04:49,747 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 21:04:49,747 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:04:49,747 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 21:04:49,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 21:04:49,758 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 21:04:49,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 21:04:49,871 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 21:04:49,871 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-24 21:04:49,871 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 21:04:49,871 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-24 21:04:49,872 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-24 21:04:49,872 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-24 21:04:49,872 INFO L87 Difference]: Start difference. First operand 214 states and 245 transitions. Second operand 6 states. [2018-01-24 21:04:50,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 21:04:50,330 INFO L93 Difference]: Finished difference Result 342 states and 398 transitions. [2018-01-24 21:04:50,331 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-24 21:04:50,331 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2018-01-24 21:04:50,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 21:04:50,332 INFO L225 Difference]: With dead ends: 342 [2018-01-24 21:04:50,333 INFO L226 Difference]: Without dead ends: 333 [2018-01-24 21:04:50,333 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2018-01-24 21:04:50,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2018-01-24 21:04:50,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 199. [2018-01-24 21:04:50,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-01-24 21:04:50,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 229 transitions. [2018-01-24 21:04:50,343 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 229 transitions. Word has length 31 [2018-01-24 21:04:50,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 21:04:50,343 INFO L432 AbstractCegarLoop]: Abstraction has 199 states and 229 transitions. [2018-01-24 21:04:50,344 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-24 21:04:50,344 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 229 transitions. [2018-01-24 21:04:50,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-01-24 21:04:50,345 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 21:04:50,345 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] [2018-01-24 21:04:50,345 INFO L371 AbstractCegarLoop]: === Iteration 12 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, 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]=== [2018-01-24 21:04:50,345 INFO L82 PathProgramCache]: Analyzing trace with hash -706076137, now seen corresponding path program 1 times [2018-01-24 21:04:50,345 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 21:04:50,346 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:04:50,346 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 21:04:50,347 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:04:50,347 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 21:04:50,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 21:04:50,356 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 21:04:50,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 21:04:50,391 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 21:04:50,392 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-24 21:04:50,392 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 21:04:50,392 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 21:04:50,392 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 21:04:50,392 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 21:04:50,392 INFO L87 Difference]: Start difference. First operand 199 states and 229 transitions. Second operand 5 states. [2018-01-24 21:04:50,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 21:04:50,737 INFO L93 Difference]: Finished difference Result 279 states and 306 transitions. [2018-01-24 21:04:50,737 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 21:04:50,737 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2018-01-24 21:04:50,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 21:04:50,739 INFO L225 Difference]: With dead ends: 279 [2018-01-24 21:04:50,739 INFO L226 Difference]: Without dead ends: 222 [2018-01-24 21:04:50,739 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-24 21:04:50,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2018-01-24 21:04:50,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 199. [2018-01-24 21:04:50,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-01-24 21:04:50,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 227 transitions. [2018-01-24 21:04:50,748 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 227 transitions. Word has length 36 [2018-01-24 21:04:50,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 21:04:50,748 INFO L432 AbstractCegarLoop]: Abstraction has 199 states and 227 transitions. [2018-01-24 21:04:50,748 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 21:04:50,748 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 227 transitions. [2018-01-24 21:04:50,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-01-24 21:04:50,749 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 21:04:50,749 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] [2018-01-24 21:04:50,749 INFO L371 AbstractCegarLoop]: === Iteration 13 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, 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]=== [2018-01-24 21:04:50,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1650873960, now seen corresponding path program 1 times [2018-01-24 21:04:50,750 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 21:04:50,751 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:04:50,751 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 21:04:50,751 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:04:50,751 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 21:04:50,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 21:04:50,763 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 21:04:51,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 21:04:51,290 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 21:04:51,290 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-01-24 21:04:51,290 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 21:04:51,290 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-24 21:04:51,290 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-24 21:04:51,291 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2018-01-24 21:04:51,291 INFO L87 Difference]: Start difference. First operand 199 states and 227 transitions. Second operand 10 states. [2018-01-24 21:04:51,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 21:04:51,942 INFO L93 Difference]: Finished difference Result 441 states and 497 transitions. [2018-01-24 21:04:51,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-01-24 21:04:51,943 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 42 [2018-01-24 21:04:51,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 21:04:51,944 INFO L225 Difference]: With dead ends: 441 [2018-01-24 21:04:51,944 INFO L226 Difference]: Without dead ends: 322 [2018-01-24 21:04:51,945 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2018-01-24 21:04:51,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2018-01-24 21:04:51,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 240. [2018-01-24 21:04:51,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2018-01-24 21:04:51,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 272 transitions. [2018-01-24 21:04:51,958 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 272 transitions. Word has length 42 [2018-01-24 21:04:51,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 21:04:51,958 INFO L432 AbstractCegarLoop]: Abstraction has 240 states and 272 transitions. [2018-01-24 21:04:51,958 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-24 21:04:51,958 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 272 transitions. [2018-01-24 21:04:51,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-01-24 21:04:51,959 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 21:04:51,959 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] [2018-01-24 21:04:51,960 INFO L371 AbstractCegarLoop]: === Iteration 14 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, 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]=== [2018-01-24 21:04:51,960 INFO L82 PathProgramCache]: Analyzing trace with hash -1611877026, now seen corresponding path program 1 times [2018-01-24 21:04:51,960 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 21:04:51,961 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:04:51,961 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 21:04:51,961 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:04:51,961 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 21:04:51,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 21:04:51,974 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 21:04:52,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 21:04:52,028 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 21:04:52,028 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 21:04:52,028 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 21:04:52,028 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 21:04:52,028 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 21:04:52,029 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 21:04:52,029 INFO L87 Difference]: Start difference. First operand 240 states and 272 transitions. Second operand 5 states. [2018-01-24 21:04:52,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 21:04:52,255 INFO L93 Difference]: Finished difference Result 360 states and 411 transitions. [2018-01-24 21:04:52,255 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 21:04:52,255 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2018-01-24 21:04:52,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 21:04:52,257 INFO L225 Difference]: With dead ends: 360 [2018-01-24 21:04:52,257 INFO L226 Difference]: Without dead ends: 359 [2018-01-24 21:04:52,258 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-24 21:04:52,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2018-01-24 21:04:52,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 239. [2018-01-24 21:04:52,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2018-01-24 21:04:52,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 271 transitions. [2018-01-24 21:04:52,276 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 271 transitions. Word has length 43 [2018-01-24 21:04:52,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 21:04:52,276 INFO L432 AbstractCegarLoop]: Abstraction has 239 states and 271 transitions. [2018-01-24 21:04:52,276 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 21:04:52,276 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 271 transitions. [2018-01-24 21:04:52,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-01-24 21:04:52,277 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 21:04:52,277 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] [2018-01-24 21:04:52,277 INFO L371 AbstractCegarLoop]: === Iteration 15 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, 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]=== [2018-01-24 21:04:52,278 INFO L82 PathProgramCache]: Analyzing trace with hash -1611877025, now seen corresponding path program 1 times [2018-01-24 21:04:52,278 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 21:04:52,279 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:04:52,279 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 21:04:52,279 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:04:52,279 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 21:04:52,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 21:04:52,292 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 21:04:52,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 21:04:52,385 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 21:04:52,385 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 21:04:52,386 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 21:04:52,386 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 21:04:52,386 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 21:04:52,386 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 21:04:52,387 INFO L87 Difference]: Start difference. First operand 239 states and 271 transitions. Second operand 5 states. [2018-01-24 21:04:52,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 21:04:52,724 INFO L93 Difference]: Finished difference Result 392 states and 450 transitions. [2018-01-24 21:04:52,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 21:04:52,725 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2018-01-24 21:04:52,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 21:04:52,727 INFO L225 Difference]: With dead ends: 392 [2018-01-24 21:04:52,727 INFO L226 Difference]: Without dead ends: 391 [2018-01-24 21:04:52,728 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 [2018-01-24 21:04:52,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2018-01-24 21:04:52,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 238. [2018-01-24 21:04:52,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2018-01-24 21:04:52,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 270 transitions. [2018-01-24 21:04:52,747 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 270 transitions. Word has length 43 [2018-01-24 21:04:52,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 21:04:52,747 INFO L432 AbstractCegarLoop]: Abstraction has 238 states and 270 transitions. [2018-01-24 21:04:52,747 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 21:04:52,748 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 270 transitions. [2018-01-24 21:04:52,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-01-24 21:04:52,748 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 21:04:52,749 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] [2018-01-24 21:04:52,749 INFO L371 AbstractCegarLoop]: === Iteration 16 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, 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]=== [2018-01-24 21:04:52,749 INFO L82 PathProgramCache]: Analyzing trace with hash -1934711090, now seen corresponding path program 1 times [2018-01-24 21:04:52,749 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 21:04:52,750 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:04:52,750 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 21:04:52,750 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:04:52,750 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 21:04:52,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 21:04:52,761 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 21:04:52,906 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 21:04:52,906 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 21:04:52,906 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-24 21:04:52,907 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 45 with the following transitions: [2018-01-24 21:04:52,910 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], [331], [336], [340], [346], [349], [448], [449], [450] [2018-01-24 21:04:52,978 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-24 21:04:52,978 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