java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-rb-cnstr_1_false-unreach-call_false-valid-deref.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 21:03:41,054 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 21:03:41,056 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 21:03:41,069 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 21:03:41,069 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 21:03:41,069 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 21:03:41,070 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 21:03:41,071 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 21:03:41,073 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 21:03:41,074 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 21:03:41,074 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 21:03:41,074 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 21:03:41,075 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 21:03:41,076 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 21:03:41,076 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 21:03:41,079 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 21:03:41,081 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 21:03:41,083 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 21:03:41,084 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 21:03:41,086 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 21:03:41,088 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-24 21:03:41,089 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-24 21:03:41,089 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-24 21:03:41,090 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-24 21:03:41,091 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-24 21:03:41,092 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-24 21:03:41,093 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-24 21:03:41,093 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-24 21:03:41,093 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-24 21:03:41,094 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 21:03:41,094 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 21:03:41,095 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf [2018-01-24 21:03:41,105 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 21:03:41,105 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 21:03:41,106 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 21:03:41,106 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 21:03:41,106 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 21:03:41,107 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-24 21:03:41,107 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 21:03:41,107 INFO L133 SettingsManager]: * Precise comparison operator=true [2018-01-24 21:03:41,107 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 21:03:41,108 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 21:03:41,108 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 21:03:41,108 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 21:03:41,108 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 21:03:41,109 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 21:03:41,109 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 21:03:41,109 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 21:03:41,109 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 21:03:41,109 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 21:03:41,110 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 21:03:41,110 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 21:03:41,110 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 21:03:41,110 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 21:03:41,110 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 21:03:41,111 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 21:03:41,111 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 21:03:41,111 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 21:03:41,111 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 21:03:41,111 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 21:03:41,112 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 21:03:41,112 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 21:03:41,112 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-24 21:03:41,112 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 21:03:41,112 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 21:03:41,113 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 21:03:41,113 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-24 21:03:41,114 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 21:03:41,114 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 21:03:41,149 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 21:03:41,162 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 21:03:41,167 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 21:03:41,168 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 21:03:41,169 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 21:03:41,170 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-rb-cnstr_1_false-unreach-call_false-valid-deref.i [2018-01-24 21:03:41,361 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 21:03:41,367 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 21:03:41,368 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 21:03:41,368 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 21:03:41,374 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 21:03:41,375 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 09:03:41" (1/1) ... [2018-01-24 21:03:41,377 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e82129b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 09:03:41, skipping insertion in model container [2018-01-24 21:03:41,377 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 09:03:41" (1/1) ... [2018-01-24 21:03:41,397 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 21:03:41,440 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 21:03:41,563 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 21:03:41,584 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 21:03:41,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 09:03:41 WrapperNode [2018-01-24 21:03:41,594 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 21:03:41,595 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 21:03:41,595 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 21:03:41,595 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 21:03:41,611 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 09:03:41" (1/1) ... [2018-01-24 21:03:41,611 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 09:03:41" (1/1) ... [2018-01-24 21:03:41,620 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 09:03:41" (1/1) ... [2018-01-24 21:03:41,621 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 09:03:41" (1/1) ... [2018-01-24 21:03:41,626 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 09:03:41" (1/1) ... [2018-01-24 21:03:41,629 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 09:03:41" (1/1) ... [2018-01-24 21:03:41,631 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 09:03:41" (1/1) ... [2018-01-24 21:03:41,633 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 21:03:41,633 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 21:03:41,634 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 21:03:41,634 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 21:03:41,637 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 09:03:41" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 21:03:41,684 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 21:03:41,684 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 21:03:41,685 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 21:03:41,685 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-24 21:03:41,685 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-24 21:03:41,685 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-24 21:03:41,685 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-24 21:03:41,686 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 21:03:41,686 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 21:03:41,686 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 21:03:41,686 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-24 21:03:41,686 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-24 21:03:41,686 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 21:03:41,687 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-24 21:03:41,687 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 21:03:41,687 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 21:03:41,687 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 21:03:42,223 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 21:03:42,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 09:03:42 BoogieIcfgContainer [2018-01-24 21:03:42,224 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 21:03:42,225 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-24 21:03:42,225 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-24 21:03:42,227 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-24 21:03:42,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.01 09:03:41" (1/3) ... [2018-01-24 21:03:42,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b40fbc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 09:03:42, skipping insertion in model container [2018-01-24 21:03:42,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 09:03:41" (2/3) ... [2018-01-24 21:03:42,229 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b40fbc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 09:03:42, skipping insertion in model container [2018-01-24 21:03:42,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 09:03:42" (3/3) ... [2018-01-24 21:03:42,231 INFO L105 eAbstractionObserver]: Analyzing ICFG dll-rb-cnstr_1_false-unreach-call_false-valid-deref.i [2018-01-24 21:03:42,239 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-24 21:03:42,246 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 59 error locations. [2018-01-24 21:03:42,301 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-24 21:03:42,301 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-24 21:03:42,301 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-24 21:03:42,302 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-24 21:03:42,302 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-24 21:03:42,302 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-24 21:03:42,302 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-24 21:03:42,302 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-24 21:03:42,303 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-24 21:03:42,330 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states. [2018-01-24 21:03:42,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-24 21:03:42,337 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 21:03:42,339 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 21:03:42,339 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr58EnsuresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 21:03:42,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1658030564, now seen corresponding path program 1 times [2018-01-24 21:03:42,348 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 21:03:42,422 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:03:42,422 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 21:03:42,423 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:03:42,423 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 21:03:42,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 21:03:42,474 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 21:03:42,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 21:03:42,552 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 21:03:42,552 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 21:03:42,552 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 21:03:42,555 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 21:03:42,566 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 21:03:42,566 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 21:03:42,568 INFO L87 Difference]: Start difference. First operand 135 states. Second operand 4 states. [2018-01-24 21:03:42,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 21:03:42,892 INFO L93 Difference]: Finished difference Result 218 states and 261 transitions. [2018-01-24 21:03:42,893 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 21:03:42,894 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-24 21:03:42,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 21:03:42,903 INFO L225 Difference]: With dead ends: 218 [2018-01-24 21:03:42,903 INFO L226 Difference]: Without dead ends: 143 [2018-01-24 21:03:42,906 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-24 21:03:42,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-01-24 21:03:42,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 128. [2018-01-24 21:03:42,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2018-01-24 21:03:42,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 135 transitions. [2018-01-24 21:03:42,944 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 135 transitions. Word has length 8 [2018-01-24 21:03:42,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 21:03:42,945 INFO L432 AbstractCegarLoop]: Abstraction has 128 states and 135 transitions. [2018-01-24 21:03:42,945 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 21:03:42,945 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 135 transitions. [2018-01-24 21:03:42,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-24 21:03:42,945 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 21:03:42,945 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 21:03:42,946 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr58EnsuresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 21:03:42,946 INFO L82 PathProgramCache]: Analyzing trace with hash 1658030565, now seen corresponding path program 1 times [2018-01-24 21:03:42,946 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 21:03:42,947 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:03:42,947 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 21:03:42,947 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:03:42,948 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 21:03:42,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 21:03:42,964 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 21:03:43,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 21:03:43,052 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 21:03:43,052 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 21:03:43,052 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 21:03:43,053 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 21:03:43,054 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 21:03:43,054 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 21:03:43,054 INFO L87 Difference]: Start difference. First operand 128 states and 135 transitions. Second operand 4 states. [2018-01-24 21:03:43,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 21:03:43,363 INFO L93 Difference]: Finished difference Result 148 states and 154 transitions. [2018-01-24 21:03:43,363 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 21:03:43,364 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-24 21:03:43,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 21:03:43,365 INFO L225 Difference]: With dead ends: 148 [2018-01-24 21:03:43,366 INFO L226 Difference]: Without dead ends: 140 [2018-01-24 21:03:43,367 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-24 21:03:43,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2018-01-24 21:03:43,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 132. [2018-01-24 21:03:43,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2018-01-24 21:03:43,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 139 transitions. [2018-01-24 21:03:43,378 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 139 transitions. Word has length 8 [2018-01-24 21:03:43,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 21:03:43,378 INFO L432 AbstractCegarLoop]: Abstraction has 132 states and 139 transitions. [2018-01-24 21:03:43,378 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 21:03:43,378 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 139 transitions. [2018-01-24 21:03:43,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-01-24 21:03:43,379 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 21:03:43,379 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 21:03:43,379 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr58EnsuresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 21:03:43,380 INFO L82 PathProgramCache]: Analyzing trace with hash -1172213647, now seen corresponding path program 1 times [2018-01-24 21:03:43,380 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 21:03:43,381 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:03:43,382 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 21:03:43,382 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:03:43,382 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 21:03:43,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 21:03:43,406 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 21:03:43,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 21:03:43,484 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 21:03:43,484 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 21:03:43,484 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 21:03:43,484 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 21:03:43,485 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 21:03:43,485 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 21:03:43,485 INFO L87 Difference]: Start difference. First operand 132 states and 139 transitions. Second operand 4 states. [2018-01-24 21:03:43,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 21:03:43,615 INFO L93 Difference]: Finished difference Result 155 states and 163 transitions. [2018-01-24 21:03:43,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 21:03:43,615 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2018-01-24 21:03:43,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 21:03:43,616 INFO L225 Difference]: With dead ends: 155 [2018-01-24 21:03:43,617 INFO L226 Difference]: Without dead ends: 140 [2018-01-24 21:03:43,617 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-24 21:03:43,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2018-01-24 21:03:43,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 124. [2018-01-24 21:03:43,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2018-01-24 21:03:43,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 134 transitions. [2018-01-24 21:03:43,628 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 134 transitions. Word has length 16 [2018-01-24 21:03:43,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 21:03:43,629 INFO L432 AbstractCegarLoop]: Abstraction has 124 states and 134 transitions. [2018-01-24 21:03:43,629 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 21:03:43,629 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 134 transitions. [2018-01-24 21:03:43,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-01-24 21:03:43,630 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 21:03:43,630 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 21:03:43,630 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr58EnsuresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 21:03:43,631 INFO L82 PathProgramCache]: Analyzing trace with hash -1172213646, now seen corresponding path program 1 times [2018-01-24 21:03:43,631 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 21:03:43,632 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:03:43,633 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 21:03:43,633 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:03:43,633 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 21:03:43,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 21:03:43,649 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 21:03:43,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 21:03:43,753 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 21:03:43,753 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-24 21:03:43,753 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 21:03:43,754 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-24 21:03:43,754 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-24 21:03:43,754 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-01-24 21:03:43,754 INFO L87 Difference]: Start difference. First operand 124 states and 134 transitions. Second operand 7 states. [2018-01-24 21:03:44,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 21:03:44,030 INFO L93 Difference]: Finished difference Result 172 states and 183 transitions. [2018-01-24 21:03:44,030 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 21:03:44,030 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2018-01-24 21:03:44,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 21:03:44,032 INFO L225 Difference]: With dead ends: 172 [2018-01-24 21:03:44,032 INFO L226 Difference]: Without dead ends: 164 [2018-01-24 21:03:44,033 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 [2018-01-24 21:03:44,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2018-01-24 21:03:44,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 139. [2018-01-24 21:03:44,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-01-24 21:03:44,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 152 transitions. [2018-01-24 21:03:44,044 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 152 transitions. Word has length 16 [2018-01-24 21:03:44,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 21:03:44,045 INFO L432 AbstractCegarLoop]: Abstraction has 139 states and 152 transitions. [2018-01-24 21:03:44,045 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-24 21:03:44,045 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 152 transitions. [2018-01-24 21:03:44,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-24 21:03:44,046 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 21:03:44,046 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 21:03:44,046 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr58EnsuresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 21:03:44,046 INFO L82 PathProgramCache]: Analyzing trace with hash -1215883307, now seen corresponding path program 1 times [2018-01-24 21:03:44,046 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 21:03:44,048 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:03:44,048 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 21:03:44,048 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:03:44,048 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 21:03:44,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 21:03:44,063 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 21:03:44,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 21:03:44,124 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 21:03:44,125 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 21:03:44,125 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 21:03:44,125 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 21:03:44,125 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 21:03:44,125 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 21:03:44,126 INFO L87 Difference]: Start difference. First operand 139 states and 152 transitions. Second operand 5 states. [2018-01-24 21:03:44,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 21:03:44,407 INFO L93 Difference]: Finished difference Result 217 states and 238 transitions. [2018-01-24 21:03:44,407 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 21:03:44,407 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2018-01-24 21:03:44,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 21:03:44,408 INFO L225 Difference]: With dead ends: 217 [2018-01-24 21:03:44,408 INFO L226 Difference]: Without dead ends: 216 [2018-01-24 21:03:44,409 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-24 21:03:44,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2018-01-24 21:03:44,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 138. [2018-01-24 21:03:44,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2018-01-24 21:03:44,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 150 transitions. [2018-01-24 21:03:44,416 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 150 transitions. Word has length 18 [2018-01-24 21:03:44,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 21:03:44,416 INFO L432 AbstractCegarLoop]: Abstraction has 138 states and 150 transitions. [2018-01-24 21:03:44,416 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 21:03:44,416 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 150 transitions. [2018-01-24 21:03:44,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-24 21:03:44,417 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 21:03:44,417 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 21:03:44,417 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr58EnsuresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 21:03:44,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1215883308, now seen corresponding path program 1 times [2018-01-24 21:03:44,417 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 21:03:44,418 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:03:44,418 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 21:03:44,419 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:03:44,419 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 21:03:44,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 21:03:44,430 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 21:03:44,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 21:03:44,462 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 21:03:44,462 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 21:03:44,462 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 21:03:44,463 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 21:03:44,463 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 21:03:44,463 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 21:03:44,463 INFO L87 Difference]: Start difference. First operand 138 states and 150 transitions. Second operand 5 states. [2018-01-24 21:03:44,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 21:03:44,632 INFO L93 Difference]: Finished difference Result 193 states and 211 transitions. [2018-01-24 21:03:44,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 21:03:44,632 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2018-01-24 21:03:44,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 21:03:44,633 INFO L225 Difference]: With dead ends: 193 [2018-01-24 21:03:44,633 INFO L226 Difference]: Without dead ends: 192 [2018-01-24 21:03:44,634 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-24 21:03:44,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2018-01-24 21:03:44,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 137. [2018-01-24 21:03:44,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-01-24 21:03:44,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 148 transitions. [2018-01-24 21:03:44,642 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 148 transitions. Word has length 18 [2018-01-24 21:03:44,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 21:03:44,642 INFO L432 AbstractCegarLoop]: Abstraction has 137 states and 148 transitions. [2018-01-24 21:03:44,642 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 21:03:44,643 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 148 transitions. [2018-01-24 21:03:44,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-24 21:03:44,643 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 21:03:44,644 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 21:03:44,644 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr58EnsuresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 21:03:44,644 INFO L82 PathProgramCache]: Analyzing trace with hash -338658602, now seen corresponding path program 1 times [2018-01-24 21:03:44,644 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 21:03:44,645 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:03:44,646 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 21:03:44,646 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:03:44,646 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 21:03:44,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 21:03:44,663 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 21:03:44,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 21:03:44,761 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 21:03:44,761 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-24 21:03:44,761 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 21:03:44,762 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-24 21:03:44,762 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-24 21:03:44,762 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-01-24 21:03:44,763 INFO L87 Difference]: Start difference. First operand 137 states and 148 transitions. Second operand 9 states. [2018-01-24 21:03:45,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 21:03:45,082 INFO L93 Difference]: Finished difference Result 152 states and 162 transitions. [2018-01-24 21:03:45,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-24 21:03:45,083 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2018-01-24 21:03:45,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 21:03:45,083 INFO L225 Difference]: With dead ends: 152 [2018-01-24 21:03:45,083 INFO L226 Difference]: Without dead ends: 151 [2018-01-24 21:03:45,084 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2018-01-24 21:03:45,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-01-24 21:03:45,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 136. [2018-01-24 21:03:45,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2018-01-24 21:03:45,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 147 transitions. [2018-01-24 21:03:45,089 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 147 transitions. Word has length 22 [2018-01-24 21:03:45,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 21:03:45,090 INFO L432 AbstractCegarLoop]: Abstraction has 136 states and 147 transitions. [2018-01-24 21:03:45,090 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-24 21:03:45,090 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 147 transitions. [2018-01-24 21:03:45,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-24 21:03:45,090 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 21:03:45,090 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 21:03:45,091 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr58EnsuresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 21:03:45,091 INFO L82 PathProgramCache]: Analyzing trace with hash -338658601, now seen corresponding path program 1 times [2018-01-24 21:03:45,091 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 21:03:45,092 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:03:45,092 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 21:03:45,092 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:03:45,092 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 21:03:45,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 21:03:45,109 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 21:03:45,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 21:03:45,247 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 21:03:45,247 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-01-24 21:03:45,247 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 21:03:45,247 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-24 21:03:45,248 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-24 21:03:45,248 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-01-24 21:03:45,248 INFO L87 Difference]: Start difference. First operand 136 states and 147 transitions. Second operand 10 states. [2018-01-24 21:03:45,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 21:03:45,818 INFO L93 Difference]: Finished difference Result 165 states and 176 transitions. [2018-01-24 21:03:45,819 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-24 21:03:45,819 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2018-01-24 21:03:45,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 21:03:45,820 INFO L225 Difference]: With dead ends: 165 [2018-01-24 21:03:45,820 INFO L226 Difference]: Without dead ends: 156 [2018-01-24 21:03:45,821 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=129, Invalid=291, Unknown=0, NotChecked=0, Total=420 [2018-01-24 21:03:45,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2018-01-24 21:03:45,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 130. [2018-01-24 21:03:45,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2018-01-24 21:03:45,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 141 transitions. [2018-01-24 21:03:45,827 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 141 transitions. Word has length 22 [2018-01-24 21:03:45,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 21:03:45,827 INFO L432 AbstractCegarLoop]: Abstraction has 130 states and 141 transitions. [2018-01-24 21:03:45,827 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-24 21:03:45,827 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 141 transitions. [2018-01-24 21:03:45,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-01-24 21:03:45,828 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 21:03:45,828 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 21:03:45,828 INFO L371 AbstractCegarLoop]: === Iteration 9 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr58EnsuresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 21:03:45,828 INFO L82 PathProgramCache]: Analyzing trace with hash 877684228, now seen corresponding path program 1 times [2018-01-24 21:03:45,828 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 21:03:45,829 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:03:45,829 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 21:03:45,830 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:03:45,830 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 21:03:45,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 21:03:45,841 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 21:03:45,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 21:03:45,907 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 21:03:45,907 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-24 21:03:45,907 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 21:03:45,907 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 21:03:45,908 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 21:03:45,908 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 21:03:45,908 INFO L87 Difference]: Start difference. First operand 130 states and 141 transitions. Second operand 5 states. [2018-01-24 21:03:46,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 21:03:46,148 INFO L93 Difference]: Finished difference Result 184 states and 199 transitions. [2018-01-24 21:03:46,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 21:03:46,149 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2018-01-24 21:03:46,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 21:03:46,150 INFO L225 Difference]: With dead ends: 184 [2018-01-24 21:03:46,150 INFO L226 Difference]: Without dead ends: 148 [2018-01-24 21:03:46,151 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-24 21:03:46,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2018-01-24 21:03:46,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 130. [2018-01-24 21:03:46,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2018-01-24 21:03:46,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 139 transitions. [2018-01-24 21:03:46,156 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 139 transitions. Word has length 28 [2018-01-24 21:03:46,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 21:03:46,157 INFO L432 AbstractCegarLoop]: Abstraction has 130 states and 139 transitions. [2018-01-24 21:03:46,157 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 21:03:46,157 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 139 transitions. [2018-01-24 21:03:46,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-24 21:03:46,158 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 21:03:46,158 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 21:03:46,158 INFO L371 AbstractCegarLoop]: === Iteration 10 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr58EnsuresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 21:03:46,159 INFO L82 PathProgramCache]: Analyzing trace with hash 1451762849, now seen corresponding path program 1 times [2018-01-24 21:03:46,159 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 21:03:46,160 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:03:46,160 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 21:03:46,161 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:03:46,161 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 21:03:46,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 21:03:46,170 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 21:03:46,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 21:03:46,278 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 21:03:46,278 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-24 21:03:46,278 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 21:03:46,279 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 21:03:46,279 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 21:03:46,279 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 21:03:46,279 INFO L87 Difference]: Start difference. First operand 130 states and 139 transitions. Second operand 5 states. [2018-01-24 21:03:46,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 21:03:46,392 INFO L93 Difference]: Finished difference Result 199 states and 214 transitions. [2018-01-24 21:03:46,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 21:03:46,393 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2018-01-24 21:03:46,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 21:03:46,394 INFO L225 Difference]: With dead ends: 199 [2018-01-24 21:03:46,394 INFO L226 Difference]: Without dead ends: 138 [2018-01-24 21:03:46,395 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-01-24 21:03:46,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-01-24 21:03:46,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 129. [2018-01-24 21:03:46,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-01-24 21:03:46,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 137 transitions. [2018-01-24 21:03:46,400 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 137 transitions. Word has length 29 [2018-01-24 21:03:46,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 21:03:46,401 INFO L432 AbstractCegarLoop]: Abstraction has 129 states and 137 transitions. [2018-01-24 21:03:46,401 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 21:03:46,401 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 137 transitions. [2018-01-24 21:03:46,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-24 21:03:46,402 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 21:03:46,402 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 21:03:46,402 INFO L371 AbstractCegarLoop]: === Iteration 11 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr58EnsuresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 21:03:46,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1220341734, now seen corresponding path program 1 times [2018-01-24 21:03:46,403 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 21:03:46,404 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:03:46,404 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 21:03:46,404 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:03:46,404 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 21:03:46,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 21:03:46,420 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 21:03:46,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 21:03:46,481 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 21:03:46,481 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 21:03:46,482 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 21:03:46,482 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 21:03:46,482 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 21:03:46,482 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 21:03:46,482 INFO L87 Difference]: Start difference. First operand 129 states and 137 transitions. Second operand 5 states. [2018-01-24 21:03:46,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 21:03:46,850 INFO L93 Difference]: Finished difference Result 196 states and 210 transitions. [2018-01-24 21:03:46,850 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 21:03:46,850 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2018-01-24 21:03:46,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 21:03:46,852 INFO L225 Difference]: With dead ends: 196 [2018-01-24 21:03:46,852 INFO L226 Difference]: Without dead ends: 195 [2018-01-24 21:03:46,852 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-24 21:03:46,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-01-24 21:03:46,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 128. [2018-01-24 21:03:46,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2018-01-24 21:03:46,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 136 transitions. [2018-01-24 21:03:46,859 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 136 transitions. Word has length 29 [2018-01-24 21:03:46,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 21:03:46,859 INFO L432 AbstractCegarLoop]: Abstraction has 128 states and 136 transitions. [2018-01-24 21:03:46,859 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 21:03:46,859 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 136 transitions. [2018-01-24 21:03:46,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-24 21:03:46,860 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 21:03:46,860 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 21:03:46,860 INFO L371 AbstractCegarLoop]: === Iteration 12 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr58EnsuresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 21:03:46,861 INFO L82 PathProgramCache]: Analyzing trace with hash -1220341733, now seen corresponding path program 1 times [2018-01-24 21:03:46,861 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 21:03:46,862 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:03:46,862 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 21:03:46,862 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:03:46,862 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 21:03:46,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 21:03:46,878 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 21:03:46,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 21:03:46,942 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 21:03:46,942 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 21:03:46,942 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 21:03:46,942 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 21:03:46,942 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 21:03:46,942 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 21:03:46,943 INFO L87 Difference]: Start difference. First operand 128 states and 136 transitions. Second operand 5 states. [2018-01-24 21:03:47,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 21:03:47,204 INFO L93 Difference]: Finished difference Result 221 states and 236 transitions. [2018-01-24 21:03:47,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 21:03:47,205 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2018-01-24 21:03:47,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 21:03:47,206 INFO L225 Difference]: With dead ends: 221 [2018-01-24 21:03:47,206 INFO L226 Difference]: Without dead ends: 220 [2018-01-24 21:03:47,207 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-24 21:03:47,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2018-01-24 21:03:47,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 127. [2018-01-24 21:03:47,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-01-24 21:03:47,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 135 transitions. [2018-01-24 21:03:47,215 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 135 transitions. Word has length 29 [2018-01-24 21:03:47,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 21:03:47,215 INFO L432 AbstractCegarLoop]: Abstraction has 127 states and 135 transitions. [2018-01-24 21:03:47,215 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 21:03:47,215 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 135 transitions. [2018-01-24 21:03:47,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-01-24 21:03:47,216 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 21:03:47,217 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 21:03:47,217 INFO L371 AbstractCegarLoop]: === Iteration 13 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr58EnsuresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 21:03:47,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1085863836, now seen corresponding path program 1 times [2018-01-24 21:03:47,217 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 21:03:47,218 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:03:47,219 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 21:03:47,219 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:03:47,219 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 21:03:47,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 21:03:47,240 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 21:03:47,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 21:03:47,380 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 21:03:47,381 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-01-24 21:03:47,381 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 21:03:47,381 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-24 21:03:47,381 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-24 21:03:47,381 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-01-24 21:03:47,382 INFO L87 Difference]: Start difference. First operand 127 states and 135 transitions. Second operand 8 states. [2018-01-24 21:03:47,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 21:03:47,665 INFO L93 Difference]: Finished difference Result 134 states and 142 transitions. [2018-01-24 21:03:47,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-24 21:03:47,666 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2018-01-24 21:03:47,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 21:03:47,667 INFO L225 Difference]: With dead ends: 134 [2018-01-24 21:03:47,667 INFO L226 Difference]: Without dead ends: 133 [2018-01-24 21:03:47,667 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2018-01-24 21:03:47,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-01-24 21:03:47,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 126. [2018-01-24 21:03:47,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2018-01-24 21:03:47,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 134 transitions. [2018-01-24 21:03:47,673 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 134 transitions. Word has length 33 [2018-01-24 21:03:47,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 21:03:47,673 INFO L432 AbstractCegarLoop]: Abstraction has 126 states and 134 transitions. [2018-01-24 21:03:47,674 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-24 21:03:47,674 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 134 transitions. [2018-01-24 21:03:47,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-01-24 21:03:47,674 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 21:03:47,674 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 21:03:47,675 INFO L371 AbstractCegarLoop]: === Iteration 14 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr58EnsuresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 21:03:47,675 INFO L82 PathProgramCache]: Analyzing trace with hash 1085863837, now seen corresponding path program 1 times [2018-01-24 21:03:47,675 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 21:03:47,676 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:03:47,676 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 21:03:47,677 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:03:47,677 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 21:03:47,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 21:03:47,695 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 21:03:47,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 21:03:47,927 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 21:03:47,960 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-01-24 21:03:47,960 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 21:03:47,961 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-01-24 21:03:47,961 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-01-24 21:03:47,961 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2018-01-24 21:03:47,961 INFO L87 Difference]: Start difference. First operand 126 states and 134 transitions. Second operand 13 states. [2018-01-24 21:03:48,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 21:03:48,503 INFO L93 Difference]: Finished difference Result 129 states and 136 transitions. [2018-01-24 21:03:48,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-01-24 21:03:48,504 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 33 [2018-01-24 21:03:48,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 21:03:48,504 INFO L225 Difference]: With dead ends: 129 [2018-01-24 21:03:48,504 INFO L226 Difference]: Without dead ends: 124 [2018-01-24 21:03:48,505 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=145, Invalid=505, Unknown=0, NotChecked=0, Total=650 [2018-01-24 21:03:48,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2018-01-24 21:03:48,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 112. [2018-01-24 21:03:48,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2018-01-24 21:03:48,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 119 transitions. [2018-01-24 21:03:48,510 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 119 transitions. Word has length 33 [2018-01-24 21:03:48,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 21:03:48,510 INFO L432 AbstractCegarLoop]: Abstraction has 112 states and 119 transitions. [2018-01-24 21:03:48,510 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-01-24 21:03:48,510 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 119 transitions. [2018-01-24 21:03:48,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-01-24 21:03:48,511 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 21:03:48,511 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 21:03:48,511 INFO L371 AbstractCegarLoop]: === Iteration 15 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr58EnsuresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 21:03:48,511 INFO L82 PathProgramCache]: Analyzing trace with hash -499110813, now seen corresponding path program 1 times [2018-01-24 21:03:48,511 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 21:03:48,512 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:03:48,512 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 21:03:48,512 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:03:48,512 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 21:03:48,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 21:03:48,522 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 21:03:48,662 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 21:03:48,662 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 21:03:48,662 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-24 21:03:48,662 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 21:03:48,662 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 21:03:48,663 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 21:03:48,663 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 21:03:48,663 INFO L87 Difference]: Start difference. First operand 112 states and 119 transitions. Second operand 5 states. [2018-01-24 21:03:48,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 21:03:48,770 INFO L93 Difference]: Finished difference Result 194 states and 207 transitions. [2018-01-24 21:03:48,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 21:03:48,770 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2018-01-24 21:03:48,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 21:03:48,771 INFO L225 Difference]: With dead ends: 194 [2018-01-24 21:03:48,771 INFO L226 Difference]: Without dead ends: 117 [2018-01-24 21:03:48,772 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-24 21:03:48,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-01-24 21:03:48,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 115. [2018-01-24 21:03:48,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-01-24 21:03:48,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 122 transitions. [2018-01-24 21:03:48,778 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 122 transitions. Word has length 35 [2018-01-24 21:03:48,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 21:03:48,779 INFO L432 AbstractCegarLoop]: Abstraction has 115 states and 122 transitions. [2018-01-24 21:03:48,779 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 21:03:48,779 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 122 transitions. [2018-01-24 21:03:48,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-01-24 21:03:48,780 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 21:03:48,780 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 21:03:48,781 INFO L371 AbstractCegarLoop]: === Iteration 16 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr58EnsuresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 21:03:48,781 INFO L82 PathProgramCache]: Analyzing trace with hash 413563347, now seen corresponding path program 1 times [2018-01-24 21:03:48,781 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 21:03:48,782 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:03:48,782 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 21:03:48,782 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:03:48,783 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 21:03:48,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 21:03:48,803 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 21:03:49,337 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 21:03:49,338 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 21:03:49,338 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-24 21:03:49,339 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 50 with the following transitions: [2018-01-24 21:03:49,341 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [11], [15], [17], [20], [22], [23], [24], [27], [30], [33], [34], [37], [38], [41], [44], [45], [78], [82], [87], [91], [99], [100], [107], [111], [119], [125], [126], [128], [141], [145], [146], [153], [157], [163], [166], [216], [217], [221], [222], [223] [2018-01-24 21:03:49,397 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-24 21:03:49,397 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