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_precise.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-01_false-unreach-call_false-valid-deref.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-25 00:28:49,034 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-25 00:28:49,036 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-25 00:28:49,051 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-25 00:28:49,051 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-25 00:28:49,052 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-25 00:28:49,053 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-25 00:28:49,055 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-25 00:28:49,058 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-25 00:28:49,058 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-25 00:28:49,059 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-25 00:28:49,059 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-25 00:28:49,060 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-25 00:28:49,062 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-25 00:28:49,063 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-25 00:28:49,065 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-25 00:28:49,067 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-25 00:28:49,069 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-25 00:28:49,071 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-25 00:28:49,072 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-25 00:28:49,074 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-25 00:28:49,074 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-25 00:28:49,075 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-25 00:28:49,076 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-25 00:28:49,076 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-25 00:28:49,078 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-25 00:28:49,078 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-25 00:28:49,079 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-25 00:28:49,079 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-25 00:28:49,079 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-25 00:28:49,080 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-25 00:28:49,080 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_precise.epf [2018-01-25 00:28:49,088 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-25 00:28:49,088 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-25 00:28:49,089 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-25 00:28:49,089 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-25 00:28:49,089 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-25 00:28:49,090 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-25 00:28:49,090 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-25 00:28:49,090 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-25 00:28:49,090 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-25 00:28:49,090 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-25 00:28:49,090 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-25 00:28:49,091 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-25 00:28:49,091 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-25 00:28:49,091 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-25 00:28:49,091 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-25 00:28:49,091 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-25 00:28:49,091 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-25 00:28:49,091 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-25 00:28:49,092 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-25 00:28:49,092 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-25 00:28:49,092 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-25 00:28:49,092 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-25 00:28:49,092 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-25 00:28:49,092 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-25 00:28:49,093 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-25 00:28:49,093 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-25 00:28:49,093 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-25 00:28:49,093 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-25 00:28:49,093 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-25 00:28:49,093 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-25 00:28:49,093 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-25 00:28:49,094 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-25 00:28:49,094 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-25 00:28:49,094 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-25 00:28:49,095 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-25 00:28:49,095 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-25 00:28:49,128 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-25 00:28:49,140 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-25 00:28:49,143 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-25 00:28:49,144 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-25 00:28:49,144 INFO L276 PluginConnector]: CDTParser initialized [2018-01-25 00:28:49,145 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-01_false-unreach-call_false-valid-deref.i [2018-01-25 00:28:49,310 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-25 00:28:49,313 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-25 00:28:49,314 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-25 00:28:49,314 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-25 00:28:49,319 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-25 00:28:49,320 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 12:28:49" (1/1) ... [2018-01-25 00:28:49,322 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@321f72c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:28:49, skipping insertion in model container [2018-01-25 00:28:49,323 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 12:28:49" (1/1) ... [2018-01-25 00:28:49,335 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 00:28:49,376 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 00:28:49,503 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 00:28:49,530 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 00:28:49,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:28:49 WrapperNode [2018-01-25 00:28:49,541 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-25 00:28:49,542 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-25 00:28:49,542 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-25 00:28:49,542 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-25 00:28:49,555 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:28:49" (1/1) ... [2018-01-25 00:28:49,556 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:28:49" (1/1) ... [2018-01-25 00:28:49,566 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:28:49" (1/1) ... [2018-01-25 00:28:49,566 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:28:49" (1/1) ... [2018-01-25 00:28:49,575 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:28:49" (1/1) ... [2018-01-25 00:28:49,582 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:28:49" (1/1) ... [2018-01-25 00:28:49,585 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:28:49" (1/1) ... [2018-01-25 00:28:49,588 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-25 00:28:49,589 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-25 00:28:49,589 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-25 00:28:49,589 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-25 00:28:49,590 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:28:49" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-25 00:28:49,648 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-25 00:28:49,648 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-25 00:28:49,648 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-25 00:28:49,648 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-25 00:28:49,648 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-25 00:28:49,648 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-25 00:28:49,649 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-25 00:28:49,649 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-25 00:28:49,649 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-25 00:28:49,649 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-25 00:28:49,649 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-25 00:28:49,649 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-25 00:28:49,650 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-25 00:28:49,650 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-25 00:28:49,650 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-25 00:28:50,227 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-25 00:28:50,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 12:28:50 BoogieIcfgContainer [2018-01-25 00:28:50,228 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-25 00:28:50,229 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-25 00:28:50,229 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-25 00:28:50,233 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-25 00:28:50,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.01 12:28:49" (1/3) ... [2018-01-25 00:28:50,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18828e80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 12:28:50, skipping insertion in model container [2018-01-25 00:28:50,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:28:49" (2/3) ... [2018-01-25 00:28:50,235 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18828e80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 12:28:50, skipping insertion in model container [2018-01-25 00:28:50,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 12:28:50" (3/3) ... [2018-01-25 00:28:50,237 INFO L105 eAbstractionObserver]: Analyzing ICFG sll-01_false-unreach-call_false-valid-deref.i [2018-01-25 00:28:50,247 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-25 00:28:50,256 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 65 error locations. [2018-01-25 00:28:50,306 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-25 00:28:50,306 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-25 00:28:50,306 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-25 00:28:50,306 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-25 00:28:50,306 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-25 00:28:50,306 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-25 00:28:50,307 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-25 00:28:50,307 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-25 00:28:50,307 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-25 00:28:50,327 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states. [2018-01-25 00:28:50,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-25 00:28:50,332 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:28:50,333 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:28:50,333 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]=== [2018-01-25 00:28:50,337 INFO L82 PathProgramCache]: Analyzing trace with hash 2039196070, now seen corresponding path program 1 times [2018-01-25 00:28:50,338 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:28:50,378 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:28:50,379 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:28:50,379 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:28:50,379 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:28:50,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:28:50,424 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:28:50,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:28:50,488 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:28:50,488 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 00:28:50,488 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:28:50,492 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 00:28:50,507 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 00:28:50,507 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 00:28:50,510 INFO L87 Difference]: Start difference. First operand 188 states. Second operand 4 states. [2018-01-25 00:28:50,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:28:50,846 INFO L93 Difference]: Finished difference Result 394 states and 523 transitions. [2018-01-25 00:28:50,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 00:28:50,848 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-25 00:28:50,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:28:50,859 INFO L225 Difference]: With dead ends: 394 [2018-01-25 00:28:50,859 INFO L226 Difference]: Without dead ends: 211 [2018-01-25 00:28:50,863 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-25 00:28:50,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-01-25 00:28:50,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 181. [2018-01-25 00:28:50,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-01-25 00:28:50,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 194 transitions. [2018-01-25 00:28:50,908 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 194 transitions. Word has length 8 [2018-01-25 00:28:50,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:28:50,909 INFO L432 AbstractCegarLoop]: Abstraction has 181 states and 194 transitions. [2018-01-25 00:28:50,909 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 00:28:50,909 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 194 transitions. [2018-01-25 00:28:50,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-25 00:28:50,909 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:28:50,909 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:28:50,910 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]=== [2018-01-25 00:28:50,910 INFO L82 PathProgramCache]: Analyzing trace with hash 2039196071, now seen corresponding path program 1 times [2018-01-25 00:28:50,910 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:28:50,911 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:28:50,911 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:28:50,911 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:28:50,911 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:28:50,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:28:50,935 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:28:51,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:28:51,025 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:28:51,025 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 00:28:51,025 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:28:51,027 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 00:28:51,027 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 00:28:51,027 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 00:28:51,028 INFO L87 Difference]: Start difference. First operand 181 states and 194 transitions. Second operand 4 states. [2018-01-25 00:28:51,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:28:51,222 INFO L93 Difference]: Finished difference Result 214 states and 227 transitions. [2018-01-25 00:28:51,222 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-25 00:28:51,222 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-25 00:28:51,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:28:51,225 INFO L225 Difference]: With dead ends: 214 [2018-01-25 00:28:51,225 INFO L226 Difference]: Without dead ends: 204 [2018-01-25 00:28:51,226 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-25 00:28:51,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2018-01-25 00:28:51,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 193. [2018-01-25 00:28:51,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-01-25 00:28:51,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 213 transitions. [2018-01-25 00:28:51,242 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 213 transitions. Word has length 8 [2018-01-25 00:28:51,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:28:51,242 INFO L432 AbstractCegarLoop]: Abstraction has 193 states and 213 transitions. [2018-01-25 00:28:51,242 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 00:28:51,242 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 213 transitions. [2018-01-25 00:28:51,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-01-25 00:28:51,242 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:28:51,243 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:28:51,243 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]=== [2018-01-25 00:28:51,243 INFO L82 PathProgramCache]: Analyzing trace with hash -1799051431, now seen corresponding path program 1 times [2018-01-25 00:28:51,243 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:28:51,244 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:28:51,244 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:28:51,245 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:28:51,245 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:28:51,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:28:51,262 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:28:51,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:28:51,305 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:28:51,305 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 00:28:51,305 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:28:51,306 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 00:28:51,306 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 00:28:51,306 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 00:28:51,307 INFO L87 Difference]: Start difference. First operand 193 states and 213 transitions. Second operand 5 states. [2018-01-25 00:28:51,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:28:51,709 INFO L93 Difference]: Finished difference Result 330 states and 359 transitions. [2018-01-25 00:28:51,711 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 00:28:51,711 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2018-01-25 00:28:51,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:28:51,714 INFO L225 Difference]: With dead ends: 330 [2018-01-25 00:28:51,714 INFO L226 Difference]: Without dead ends: 329 [2018-01-25 00:28:51,715 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-25 00:28:51,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2018-01-25 00:28:51,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 192. [2018-01-25 00:28:51,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2018-01-25 00:28:51,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 212 transitions. [2018-01-25 00:28:51,731 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 212 transitions. Word has length 17 [2018-01-25 00:28:51,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:28:51,732 INFO L432 AbstractCegarLoop]: Abstraction has 192 states and 212 transitions. [2018-01-25 00:28:51,732 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 00:28:51,732 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 212 transitions. [2018-01-25 00:28:51,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-01-25 00:28:51,732 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:28:51,732 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:28:51,733 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]=== [2018-01-25 00:28:51,733 INFO L82 PathProgramCache]: Analyzing trace with hash -1799051430, now seen corresponding path program 1 times [2018-01-25 00:28:51,733 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:28:51,734 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:28:51,734 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:28:51,734 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:28:51,734 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:28:51,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:28:51,748 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:28:51,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:28:51,836 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:28:51,837 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 00:28:51,837 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:28:51,837 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 00:28:51,838 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 00:28:51,838 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 00:28:51,838 INFO L87 Difference]: Start difference. First operand 192 states and 212 transitions. Second operand 5 states. [2018-01-25 00:28:52,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:28:52,078 INFO L93 Difference]: Finished difference Result 359 states and 398 transitions. [2018-01-25 00:28:52,078 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 00:28:52,079 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2018-01-25 00:28:52,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:28:52,080 INFO L225 Difference]: With dead ends: 359 [2018-01-25 00:28:52,080 INFO L226 Difference]: Without dead ends: 358 [2018-01-25 00:28:52,081 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-25 00:28:52,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2018-01-25 00:28:52,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 191. [2018-01-25 00:28:52,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-01-25 00:28:52,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 211 transitions. [2018-01-25 00:28:52,095 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 211 transitions. Word has length 17 [2018-01-25 00:28:52,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:28:52,095 INFO L432 AbstractCegarLoop]: Abstraction has 191 states and 211 transitions. [2018-01-25 00:28:52,095 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 00:28:52,095 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 211 transitions. [2018-01-25 00:28:52,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-01-25 00:28:52,096 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:28:52,096 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:28:52,096 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]=== [2018-01-25 00:28:52,096 INFO L82 PathProgramCache]: Analyzing trace with hash 1355722779, now seen corresponding path program 1 times [2018-01-25 00:28:52,097 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:28:52,097 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:28:52,097 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:28:52,097 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:28:52,098 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:28:52,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:28:52,117 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:28:52,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:28:52,206 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:28:52,206 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-01-25 00:28:52,206 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:28:52,206 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-25 00:28:52,206 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-25 00:28:52,207 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-01-25 00:28:52,207 INFO L87 Difference]: Start difference. First operand 191 states and 211 transitions. Second operand 8 states. [2018-01-25 00:28:52,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:28:52,711 INFO L93 Difference]: Finished difference Result 333 states and 360 transitions. [2018-01-25 00:28:52,711 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-25 00:28:52,711 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2018-01-25 00:28:52,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:28:52,713 INFO L225 Difference]: With dead ends: 333 [2018-01-25 00:28:52,714 INFO L226 Difference]: Without dead ends: 332 [2018-01-25 00:28:52,714 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-01-25 00:28:52,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2018-01-25 00:28:52,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 190. [2018-01-25 00:28:52,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2018-01-25 00:28:52,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 210 transitions. [2018-01-25 00:28:52,728 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 210 transitions. Word has length 20 [2018-01-25 00:28:52,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:28:52,728 INFO L432 AbstractCegarLoop]: Abstraction has 190 states and 210 transitions. [2018-01-25 00:28:52,728 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-25 00:28:52,728 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 210 transitions. [2018-01-25 00:28:52,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-01-25 00:28:52,729 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:28:52,729 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:28:52,729 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]=== [2018-01-25 00:28:52,730 INFO L82 PathProgramCache]: Analyzing trace with hash 1355722780, now seen corresponding path program 1 times [2018-01-25 00:28:52,730 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:28:52,731 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:28:52,731 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:28:52,731 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:28:52,731 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:28:52,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:28:52,749 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:28:52,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:28:52,972 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:28:52,972 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-01-25 00:28:52,972 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:28:52,972 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-25 00:28:52,973 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-25 00:28:52,973 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-01-25 00:28:52,973 INFO L87 Difference]: Start difference. First operand 190 states and 210 transitions. Second operand 8 states. [2018-01-25 00:28:53,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:28:53,769 INFO L93 Difference]: Finished difference Result 335 states and 362 transitions. [2018-01-25 00:28:53,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-25 00:28:53,769 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2018-01-25 00:28:53,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:28:53,771 INFO L225 Difference]: With dead ends: 335 [2018-01-25 00:28:53,772 INFO L226 Difference]: Without dead ends: 334 [2018-01-25 00:28:53,772 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-01-25 00:28:53,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2018-01-25 00:28:53,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 189. [2018-01-25 00:28:53,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-01-25 00:28:53,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 209 transitions. [2018-01-25 00:28:53,783 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 209 transitions. Word has length 20 [2018-01-25 00:28:53,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:28:53,784 INFO L432 AbstractCegarLoop]: Abstraction has 189 states and 209 transitions. [2018-01-25 00:28:53,784 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-25 00:28:53,784 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 209 transitions. [2018-01-25 00:28:53,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-01-25 00:28:53,784 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:28:53,784 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:28:53,785 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]=== [2018-01-25 00:28:53,785 INFO L82 PathProgramCache]: Analyzing trace with hash -778525244, now seen corresponding path program 1 times [2018-01-25 00:28:53,785 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:28:53,786 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:28:53,786 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:28:53,786 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:28:53,786 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:28:53,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:28:53,798 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:28:53,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:28:53,857 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:28:53,857 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-25 00:28:53,857 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:28:53,857 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 00:28:53,858 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 00:28:53,858 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 00:28:53,858 INFO L87 Difference]: Start difference. First operand 189 states and 209 transitions. Second operand 5 states. [2018-01-25 00:28:53,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:28:53,974 INFO L93 Difference]: Finished difference Result 443 states and 488 transitions. [2018-01-25 00:28:53,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 00:28:53,974 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2018-01-25 00:28:53,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:28:53,976 INFO L225 Difference]: With dead ends: 443 [2018-01-25 00:28:53,976 INFO L226 Difference]: Without dead ends: 282 [2018-01-25 00:28:53,978 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-25 00:28:53,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2018-01-25 00:28:53,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 193. [2018-01-25 00:28:53,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-01-25 00:28:53,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 213 transitions. [2018-01-25 00:28:53,990 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 213 transitions. Word has length 26 [2018-01-25 00:28:53,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:28:53,991 INFO L432 AbstractCegarLoop]: Abstraction has 193 states and 213 transitions. [2018-01-25 00:28:53,991 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 00:28:53,991 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 213 transitions. [2018-01-25 00:28:53,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-01-25 00:28:53,992 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:28:53,992 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:28:53,993 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]=== [2018-01-25 00:28:53,993 INFO L82 PathProgramCache]: Analyzing trace with hash 1814157193, now seen corresponding path program 1 times [2018-01-25 00:28:53,993 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:28:53,994 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:28:53,994 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:28:53,994 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:28:53,994 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:28:54,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:28:54,006 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:28:54,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:28:54,130 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:28:54,130 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 00:28:54,130 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:28:54,130 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 00:28:54,131 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 00:28:54,131 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 00:28:54,131 INFO L87 Difference]: Start difference. First operand 193 states and 213 transitions. Second operand 5 states. [2018-01-25 00:28:54,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:28:54,384 INFO L93 Difference]: Finished difference Result 215 states and 230 transitions. [2018-01-25 00:28:54,385 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-25 00:28:54,385 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2018-01-25 00:28:54,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:28:54,386 INFO L225 Difference]: With dead ends: 215 [2018-01-25 00:28:54,386 INFO L226 Difference]: Without dead ends: 203 [2018-01-25 00:28:54,386 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-25 00:28:54,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-01-25 00:28:54,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 185. [2018-01-25 00:28:54,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-01-25 00:28:54,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 205 transitions. [2018-01-25 00:28:54,395 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 205 transitions. Word has length 28 [2018-01-25 00:28:54,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:28:54,395 INFO L432 AbstractCegarLoop]: Abstraction has 185 states and 205 transitions. [2018-01-25 00:28:54,396 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 00:28:54,396 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 205 transitions. [2018-01-25 00:28:54,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-01-25 00:28:54,397 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:28:54,397 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:28:54,397 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]=== [2018-01-25 00:28:54,397 INFO L82 PathProgramCache]: Analyzing trace with hash 1814157194, now seen corresponding path program 1 times [2018-01-25 00:28:54,397 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:28:54,398 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:28:54,398 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:28:54,398 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:28:54,398 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:28:54,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:28:54,410 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:28:54,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:28:54,477 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:28:54,477 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-25 00:28:54,477 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:28:54,477 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-25 00:28:54,478 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-25 00:28:54,478 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-01-25 00:28:54,478 INFO L87 Difference]: Start difference. First operand 185 states and 205 transitions. Second operand 7 states. [2018-01-25 00:28:54,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:28:54,685 INFO L93 Difference]: Finished difference Result 246 states and 263 transitions. [2018-01-25 00:28:54,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 00:28:54,686 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2018-01-25 00:28:54,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:28:54,687 INFO L225 Difference]: With dead ends: 246 [2018-01-25 00:28:54,687 INFO L226 Difference]: Without dead ends: 242 [2018-01-25 00:28:54,688 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-01-25 00:28:54,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2018-01-25 00:28:54,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 215. [2018-01-25 00:28:54,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2018-01-25 00:28:54,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 246 transitions. [2018-01-25 00:28:54,701 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 246 transitions. Word has length 28 [2018-01-25 00:28:54,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:28:54,702 INFO L432 AbstractCegarLoop]: Abstraction has 215 states and 246 transitions. [2018-01-25 00:28:54,702 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-25 00:28:54,702 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 246 transitions. [2018-01-25 00:28:54,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-01-25 00:28:54,703 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:28:54,703 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:28:54,703 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]=== [2018-01-25 00:28:54,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1983523681, now seen corresponding path program 1 times [2018-01-25 00:28:54,704 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:28:54,704 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:28:54,705 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:28:54,705 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:28:54,705 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:28:54,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:28:54,716 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:28:54,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:28:54,754 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:28:54,754 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-25 00:28:54,754 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:28:54,754 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-25 00:28:54,754 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-25 00:28:54,754 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-25 00:28:54,755 INFO L87 Difference]: Start difference. First operand 215 states and 246 transitions. Second operand 6 states. [2018-01-25 00:28:55,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:28:55,028 INFO L93 Difference]: Finished difference Result 312 states and 360 transitions. [2018-01-25 00:28:55,028 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-25 00:28:55,028 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2018-01-25 00:28:55,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:28:55,030 INFO L225 Difference]: With dead ends: 312 [2018-01-25 00:28:55,030 INFO L226 Difference]: Without dead ends: 311 [2018-01-25 00:28:55,030 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-01-25 00:28:55,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2018-01-25 00:28:55,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 214. [2018-01-25 00:28:55,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2018-01-25 00:28:55,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 245 transitions. [2018-01-25 00:28:55,039 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 245 transitions. Word has length 31 [2018-01-25 00:28:55,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:28:55,040 INFO L432 AbstractCegarLoop]: Abstraction has 214 states and 245 transitions. [2018-01-25 00:28:55,040 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-25 00:28:55,040 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 245 transitions. [2018-01-25 00:28:55,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-01-25 00:28:55,041 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:28:55,042 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:28:55,042 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]=== [2018-01-25 00:28:55,042 INFO L82 PathProgramCache]: Analyzing trace with hash 1983523682, now seen corresponding path program 1 times [2018-01-25 00:28:55,042 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:28:55,043 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:28:55,043 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:28:55,043 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:28:55,043 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:28:55,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:28:55,054 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:28:55,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:28:55,132 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:28:55,132 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-25 00:28:55,132 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:28:55,133 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-25 00:28:55,133 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-25 00:28:55,133 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-25 00:28:55,133 INFO L87 Difference]: Start difference. First operand 214 states and 245 transitions. Second operand 6 states. [2018-01-25 00:28:55,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:28:55,563 INFO L93 Difference]: Finished difference Result 342 states and 398 transitions. [2018-01-25 00:28:55,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-25 00:28:55,563 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2018-01-25 00:28:55,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:28:55,565 INFO L225 Difference]: With dead ends: 342 [2018-01-25 00:28:55,565 INFO L226 Difference]: Without dead ends: 333 [2018-01-25 00:28:55,566 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2018-01-25 00:28:55,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2018-01-25 00:28:55,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 199. [2018-01-25 00:28:55,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-01-25 00:28:55,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 229 transitions. [2018-01-25 00:28:55,578 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 229 transitions. Word has length 31 [2018-01-25 00:28:55,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:28:55,578 INFO L432 AbstractCegarLoop]: Abstraction has 199 states and 229 transitions. [2018-01-25 00:28:55,579 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-25 00:28:55,579 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 229 transitions. [2018-01-25 00:28:55,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-01-25 00:28:55,580 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:28:55,580 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:28:55,580 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]=== [2018-01-25 00:28:55,580 INFO L82 PathProgramCache]: Analyzing trace with hash -706076137, now seen corresponding path program 1 times [2018-01-25 00:28:55,580 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:28:55,581 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:28:55,581 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:28:55,581 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:28:55,582 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:28:55,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:28:55,590 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:28:55,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:28:55,623 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:28:55,623 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-25 00:28:55,623 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:28:55,623 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 00:28:55,624 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 00:28:55,624 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 00:28:55,624 INFO L87 Difference]: Start difference. First operand 199 states and 229 transitions. Second operand 5 states. [2018-01-25 00:28:55,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:28:55,735 INFO L93 Difference]: Finished difference Result 279 states and 306 transitions. [2018-01-25 00:28:55,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 00:28:55,735 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2018-01-25 00:28:55,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:28:55,736 INFO L225 Difference]: With dead ends: 279 [2018-01-25 00:28:55,736 INFO L226 Difference]: Without dead ends: 222 [2018-01-25 00:28:55,737 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-25 00:28:55,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2018-01-25 00:28:55,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 199. [2018-01-25 00:28:55,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-01-25 00:28:55,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 227 transitions. [2018-01-25 00:28:55,744 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 227 transitions. Word has length 36 [2018-01-25 00:28:55,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:28:55,745 INFO L432 AbstractCegarLoop]: Abstraction has 199 states and 227 transitions. [2018-01-25 00:28:55,745 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 00:28:55,745 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 227 transitions. [2018-01-25 00:28:55,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-01-25 00:28:55,746 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:28:55,746 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:28:55,746 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]=== [2018-01-25 00:28:55,746 INFO L82 PathProgramCache]: Analyzing trace with hash 1650873960, now seen corresponding path program 1 times [2018-01-25 00:28:55,747 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:28:55,747 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:28:55,747 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:28:55,748 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:28:55,748 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:28:55,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:28:55,758 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:28:56,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:28:56,288 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:28:56,288 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-01-25 00:28:56,288 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:28:56,289 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-25 00:28:56,289 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-25 00:28:56,289 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2018-01-25 00:28:56,289 INFO L87 Difference]: Start difference. First operand 199 states and 227 transitions. Second operand 10 states. [2018-01-25 00:28:56,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:28:56,718 INFO L93 Difference]: Finished difference Result 441 states and 497 transitions. [2018-01-25 00:28:56,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-01-25 00:28:56,757 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 42 [2018-01-25 00:28:56,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:28:56,759 INFO L225 Difference]: With dead ends: 441 [2018-01-25 00:28:56,759 INFO L226 Difference]: Without dead ends: 322 [2018-01-25 00:28:56,759 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2018-01-25 00:28:56,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2018-01-25 00:28:56,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 240. [2018-01-25 00:28:56,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2018-01-25 00:28:56,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 272 transitions. [2018-01-25 00:28:56,776 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 272 transitions. Word has length 42 [2018-01-25 00:28:56,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:28:56,776 INFO L432 AbstractCegarLoop]: Abstraction has 240 states and 272 transitions. [2018-01-25 00:28:56,776 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-25 00:28:56,777 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 272 transitions. [2018-01-25 00:28:56,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-01-25 00:28:56,778 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:28:56,778 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:28:56,778 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]=== [2018-01-25 00:28:56,778 INFO L82 PathProgramCache]: Analyzing trace with hash -1611877026, now seen corresponding path program 1 times [2018-01-25 00:28:56,778 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:28:56,779 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:28:56,779 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:28:56,779 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:28:56,780 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:28:56,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:28:56,792 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:28:56,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:28:56,839 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:28:56,840 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 00:28:56,840 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:28:56,840 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 00:28:56,840 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 00:28:56,841 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 00:28:56,841 INFO L87 Difference]: Start difference. First operand 240 states and 272 transitions. Second operand 5 states. [2018-01-25 00:28:57,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:28:57,034 INFO L93 Difference]: Finished difference Result 360 states and 411 transitions. [2018-01-25 00:28:57,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 00:28:57,034 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2018-01-25 00:28:57,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:28:57,036 INFO L225 Difference]: With dead ends: 360 [2018-01-25 00:28:57,036 INFO L226 Difference]: Without dead ends: 359 [2018-01-25 00:28:57,036 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-25 00:28:57,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2018-01-25 00:28:57,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 239. [2018-01-25 00:28:57,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2018-01-25 00:28:57,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 271 transitions. [2018-01-25 00:28:57,051 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 271 transitions. Word has length 43 [2018-01-25 00:28:57,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:28:57,051 INFO L432 AbstractCegarLoop]: Abstraction has 239 states and 271 transitions. [2018-01-25 00:28:57,051 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 00:28:57,051 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 271 transitions. [2018-01-25 00:28:57,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-01-25 00:28:57,052 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:28:57,052 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:28:57,052 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]=== [2018-01-25 00:28:57,053 INFO L82 PathProgramCache]: Analyzing trace with hash -1611877025, now seen corresponding path program 1 times [2018-01-25 00:28:57,053 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:28:57,053 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:28:57,054 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:28:57,054 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:28:57,054 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:28:57,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:28:57,066 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:28:57,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:28:57,169 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:28:57,169 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 00:28:57,169 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:28:57,170 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 00:28:57,170 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 00:28:57,170 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 00:28:57,170 INFO L87 Difference]: Start difference. First operand 239 states and 271 transitions. Second operand 5 states. [2018-01-25 00:28:57,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:28:57,468 INFO L93 Difference]: Finished difference Result 392 states and 450 transitions. [2018-01-25 00:28:57,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 00:28:57,469 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2018-01-25 00:28:57,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:28:57,470 INFO L225 Difference]: With dead ends: 392 [2018-01-25 00:28:57,470 INFO L226 Difference]: Without dead ends: 391 [2018-01-25 00:28:57,471 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-25 00:28:57,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2018-01-25 00:28:57,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 238. [2018-01-25 00:28:57,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2018-01-25 00:28:57,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 270 transitions. [2018-01-25 00:28:57,482 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 270 transitions. Word has length 43 [2018-01-25 00:28:57,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:28:57,482 INFO L432 AbstractCegarLoop]: Abstraction has 238 states and 270 transitions. [2018-01-25 00:28:57,482 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 00:28:57,482 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 270 transitions. [2018-01-25 00:28:57,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-01-25 00:28:57,483 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:28:57,483 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:28:57,483 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]=== [2018-01-25 00:28:57,483 INFO L82 PathProgramCache]: Analyzing trace with hash -1934711090, now seen corresponding path program 1 times [2018-01-25 00:28:57,483 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:28:57,484 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:28:57,484 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:28:57,484 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:28:57,484 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:28:57,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:28:57,494 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:28:57,705 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:28:57,706 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-25 00:28:57,706 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-25 00:28:57,707 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 45 with the following transitions: [2018-01-25 00:28:57,709 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] [2018-01-25 00:28:57,754 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-25 00:28:57,754 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