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-sentinel_true-unreach-call_true-valid-memsafety.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 20:56:09,157 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 20:56:09,159 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 20:56:09,199 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 20:56:09,200 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 20:56:09,201 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 20:56:09,202 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 20:56:09,204 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 20:56:09,206 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 20:56:09,207 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 20:56:09,208 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 20:56:09,209 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 20:56:09,210 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 20:56:09,211 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 20:56:09,212 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 20:56:09,215 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 20:56:09,218 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 20:56:09,220 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 20:56:09,222 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 20:56:09,223 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 20:56:09,226 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-24 20:56:09,227 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-24 20:56:09,227 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-24 20:56:09,228 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-24 20:56:09,229 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-24 20:56:09,231 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-24 20:56:09,231 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-24 20:56:09,232 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-24 20:56:09,232 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-24 20:56:09,232 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 20:56:09,233 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 20:56:09,233 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 20:56:09,243 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 20:56:09,243 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 20:56:09,244 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 20:56:09,244 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 20:56:09,245 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 20:56:09,245 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-24 20:56:09,245 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 20:56:09,245 INFO L133 SettingsManager]: * Precise comparison operator=true [2018-01-24 20:56:09,245 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 20:56:09,246 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 20:56:09,246 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 20:56:09,246 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 20:56:09,246 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 20:56:09,246 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 20:56:09,246 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 20:56:09,246 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 20:56:09,247 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 20:56:09,247 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 20:56:09,247 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 20:56:09,247 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 20:56:09,247 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 20:56:09,247 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 20:56:09,247 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 20:56:09,248 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 20:56:09,248 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 20:56:09,248 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 20:56:09,248 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 20:56:09,249 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 20:56:09,249 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 20:56:09,249 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 20:56:09,249 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-24 20:56:09,249 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 20:56:09,249 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 20:56:09,249 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 20:56:09,249 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-24 20:56:09,250 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 20:56:09,250 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 20:56:09,286 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 20:56:09,299 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 20:56:09,303 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 20:56:09,305 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 20:56:09,305 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 20:56:09,306 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-rb-sentinel_true-unreach-call_true-valid-memsafety.i [2018-01-24 20:56:09,482 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 20:56:09,487 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 20:56:09,488 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 20:56:09,488 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 20:56:09,493 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 20:56:09,494 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 08:56:09" (1/1) ... [2018-01-24 20:56:09,497 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a3ee212 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:56:09, skipping insertion in model container [2018-01-24 20:56:09,497 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 08:56:09" (1/1) ... [2018-01-24 20:56:09,511 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 20:56:09,554 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 20:56:09,689 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 20:56:09,715 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 20:56:09,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:56:09 WrapperNode [2018-01-24 20:56:09,726 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 20:56:09,727 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 20:56:09,727 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 20:56:09,728 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 20:56:09,744 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:56:09" (1/1) ... [2018-01-24 20:56:09,744 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:56:09" (1/1) ... [2018-01-24 20:56:09,755 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:56:09" (1/1) ... [2018-01-24 20:56:09,755 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:56:09" (1/1) ... [2018-01-24 20:56:09,764 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:56:09" (1/1) ... [2018-01-24 20:56:09,770 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:56:09" (1/1) ... [2018-01-24 20:56:09,773 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:56:09" (1/1) ... [2018-01-24 20:56:09,776 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 20:56:09,777 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 20:56:09,777 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 20:56:09,777 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 20:56:09,778 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:56:09" (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 20:56:09,831 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 20:56:09,831 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 20:56:09,831 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 20:56:09,831 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-24 20:56:09,832 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-24 20:56:09,832 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-24 20:56:09,832 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-24 20:56:09,832 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 20:56:09,832 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 20:56:09,832 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 20:56:09,832 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-24 20:56:09,832 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-24 20:56:09,832 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 20:56:09,832 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-24 20:56:09,833 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 20:56:09,833 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 20:56:09,833 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 20:56:10,391 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 20:56:10,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 08:56:10 BoogieIcfgContainer [2018-01-24 20:56:10,392 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 20:56:10,393 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-24 20:56:10,393 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-24 20:56:10,395 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-24 20:56:10,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.01 08:56:09" (1/3) ... [2018-01-24 20:56:10,397 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19e139d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 08:56:10, skipping insertion in model container [2018-01-24 20:56:10,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:56:09" (2/3) ... [2018-01-24 20:56:10,397 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19e139d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 08:56:10, skipping insertion in model container [2018-01-24 20:56:10,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 08:56:10" (3/3) ... [2018-01-24 20:56:10,399 INFO L105 eAbstractionObserver]: Analyzing ICFG dll-rb-sentinel_true-unreach-call_true-valid-memsafety.i [2018-01-24 20:56:10,406 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-24 20:56:10,413 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 69 error locations. [2018-01-24 20:56:10,454 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-24 20:56:10,454 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-24 20:56:10,454 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-24 20:56:10,454 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-24 20:56:10,454 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-24 20:56:10,455 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-24 20:56:10,455 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-24 20:56:10,455 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-24 20:56:10,455 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-24 20:56:10,475 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states. [2018-01-24 20:56:10,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-24 20:56:10,481 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:56:10,482 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:56:10,482 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:56:10,486 INFO L82 PathProgramCache]: Analyzing trace with hash 115964591, now seen corresponding path program 1 times [2018-01-24 20:56:10,488 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:56:10,537 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:56:10,537 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:56:10,537 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:56:10,537 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:56:10,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:56:10,578 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:56:10,630 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 20:56:10,632 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:56:10,632 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 20:56:10,632 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:56:10,634 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 20:56:10,644 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 20:56:10,645 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 20:56:10,647 INFO L87 Difference]: Start difference. First operand 163 states. Second operand 4 states. [2018-01-24 20:56:10,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:56:10,975 INFO L93 Difference]: Finished difference Result 320 states and 382 transitions. [2018-01-24 20:56:10,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 20:56:10,978 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-24 20:56:10,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:56:10,988 INFO L225 Difference]: With dead ends: 320 [2018-01-24 20:56:10,989 INFO L226 Difference]: Without dead ends: 179 [2018-01-24 20:56:10,992 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 20:56:11,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-01-24 20:56:11,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 160. [2018-01-24 20:56:11,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2018-01-24 20:56:11,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 167 transitions. [2018-01-24 20:56:11,033 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 167 transitions. Word has length 8 [2018-01-24 20:56:11,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:56:11,033 INFO L432 AbstractCegarLoop]: Abstraction has 160 states and 167 transitions. [2018-01-24 20:56:11,033 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 20:56:11,033 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 167 transitions. [2018-01-24 20:56:11,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-24 20:56:11,034 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:56:11,034 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:56:11,034 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:56:11,034 INFO L82 PathProgramCache]: Analyzing trace with hash 115964592, now seen corresponding path program 1 times [2018-01-24 20:56:11,034 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:56:11,036 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:56:11,036 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:56:11,036 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:56:11,036 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:56:11,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:56:11,053 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:56:11,138 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 20:56:11,139 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:56:11,139 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 20:56:11,139 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:56:11,141 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 20:56:11,141 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 20:56:11,141 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 20:56:11,142 INFO L87 Difference]: Start difference. First operand 160 states and 167 transitions. Second operand 4 states. [2018-01-24 20:56:11,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:56:11,378 INFO L93 Difference]: Finished difference Result 160 states and 167 transitions. [2018-01-24 20:56:11,378 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 20:56:11,378 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-24 20:56:11,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:56:11,380 INFO L225 Difference]: With dead ends: 160 [2018-01-24 20:56:11,380 INFO L226 Difference]: Without dead ends: 156 [2018-01-24 20:56:11,381 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 20:56:11,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2018-01-24 20:56:11,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2018-01-24 20:56:11,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2018-01-24 20:56:11,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 162 transitions. [2018-01-24 20:56:11,394 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 162 transitions. Word has length 8 [2018-01-24 20:56:11,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:56:11,394 INFO L432 AbstractCegarLoop]: Abstraction has 156 states and 162 transitions. [2018-01-24 20:56:11,394 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 20:56:11,394 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 162 transitions. [2018-01-24 20:56:11,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-01-24 20:56:11,395 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:56:11,395 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:56:11,395 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:56:11,396 INFO L82 PathProgramCache]: Analyzing trace with hash 992494940, now seen corresponding path program 1 times [2018-01-24 20:56:11,396 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:56:11,397 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:56:11,398 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:56:11,398 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:56:11,398 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:56:11,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:56:11,417 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:56:11,468 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 20:56:11,468 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:56:11,468 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 20:56:11,468 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:56:11,469 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 20:56:11,469 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 20:56:11,469 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 20:56:11,469 INFO L87 Difference]: Start difference. First operand 156 states and 162 transitions. Second operand 4 states. [2018-01-24 20:56:11,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:56:11,592 INFO L93 Difference]: Finished difference Result 170 states and 181 transitions. [2018-01-24 20:56:11,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 20:56:11,592 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2018-01-24 20:56:11,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:56:11,594 INFO L225 Difference]: With dead ends: 170 [2018-01-24 20:56:11,594 INFO L226 Difference]: Without dead ends: 162 [2018-01-24 20:56:11,594 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 20:56:11,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2018-01-24 20:56:11,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 150. [2018-01-24 20:56:11,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2018-01-24 20:56:11,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 157 transitions. [2018-01-24 20:56:11,606 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 157 transitions. Word has length 13 [2018-01-24 20:56:11,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:56:11,606 INFO L432 AbstractCegarLoop]: Abstraction has 150 states and 157 transitions. [2018-01-24 20:56:11,606 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 20:56:11,606 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 157 transitions. [2018-01-24 20:56:11,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-01-24 20:56:11,607 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:56:11,607 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:56:11,607 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:56:11,608 INFO L82 PathProgramCache]: Analyzing trace with hash 992494941, now seen corresponding path program 1 times [2018-01-24 20:56:11,608 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:56:11,609 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:56:11,610 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:56:11,610 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:56:11,610 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:56:11,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:56:11,628 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:56:11,682 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 20:56:11,683 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:56:11,683 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 20:56:11,683 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:56:11,683 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 20:56:11,683 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 20:56:11,683 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 20:56:11,684 INFO L87 Difference]: Start difference. First operand 150 states and 157 transitions. Second operand 4 states. [2018-01-24 20:56:11,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:56:11,847 INFO L93 Difference]: Finished difference Result 170 states and 176 transitions. [2018-01-24 20:56:11,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 20:56:11,848 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2018-01-24 20:56:11,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:56:11,849 INFO L225 Difference]: With dead ends: 170 [2018-01-24 20:56:11,849 INFO L226 Difference]: Without dead ends: 162 [2018-01-24 20:56:11,850 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 20:56:11,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2018-01-24 20:56:11,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 154. [2018-01-24 20:56:11,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2018-01-24 20:56:11,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 161 transitions. [2018-01-24 20:56:11,861 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 161 transitions. Word has length 13 [2018-01-24 20:56:11,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:56:11,862 INFO L432 AbstractCegarLoop]: Abstraction has 154 states and 161 transitions. [2018-01-24 20:56:11,862 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 20:56:11,862 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 161 transitions. [2018-01-24 20:56:11,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-01-24 20:56:11,863 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:56:11,863 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] [2018-01-24 20:56:11,863 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:56:11,863 INFO L82 PathProgramCache]: Analyzing trace with hash 1268132201, now seen corresponding path program 1 times [2018-01-24 20:56:11,863 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:56:11,865 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:56:11,865 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:56:11,865 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:56:11,865 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:56:11,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:56:11,893 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:56:12,006 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 20:56:12,006 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:56:12,006 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 20:56:12,007 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:56:12,007 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 20:56:12,007 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 20:56:12,007 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 20:56:12,008 INFO L87 Difference]: Start difference. First operand 154 states and 161 transitions. Second operand 4 states. [2018-01-24 20:56:12,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:56:12,143 INFO L93 Difference]: Finished difference Result 168 states and 178 transitions. [2018-01-24 20:56:12,144 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 20:56:12,144 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2018-01-24 20:56:12,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:56:12,145 INFO L225 Difference]: With dead ends: 168 [2018-01-24 20:56:12,145 INFO L226 Difference]: Without dead ends: 152 [2018-01-24 20:56:12,145 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 20:56:12,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2018-01-24 20:56:12,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 142. [2018-01-24 20:56:12,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2018-01-24 20:56:12,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 151 transitions. [2018-01-24 20:56:12,153 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 151 transitions. Word has length 21 [2018-01-24 20:56:12,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:56:12,154 INFO L432 AbstractCegarLoop]: Abstraction has 142 states and 151 transitions. [2018-01-24 20:56:12,154 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 20:56:12,154 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 151 transitions. [2018-01-24 20:56:12,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-01-24 20:56:12,154 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:56:12,155 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] [2018-01-24 20:56:12,155 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:56:12,155 INFO L82 PathProgramCache]: Analyzing trace with hash 1268132202, now seen corresponding path program 1 times [2018-01-24 20:56:12,155 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:56:12,157 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:56:12,157 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:56:12,157 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:56:12,157 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:56:12,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:56:12,177 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:56:12,264 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 20:56:12,264 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:56:12,264 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-24 20:56:12,264 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:56:12,265 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-24 20:56:12,265 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-24 20:56:12,265 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-01-24 20:56:12,265 INFO L87 Difference]: Start difference. First operand 142 states and 151 transitions. Second operand 7 states. [2018-01-24 20:56:12,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:56:12,584 INFO L93 Difference]: Finished difference Result 186 states and 196 transitions. [2018-01-24 20:56:12,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-24 20:56:12,584 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2018-01-24 20:56:12,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:56:12,585 INFO L225 Difference]: With dead ends: 186 [2018-01-24 20:56:12,585 INFO L226 Difference]: Without dead ends: 179 [2018-01-24 20:56:12,586 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2018-01-24 20:56:12,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-01-24 20:56:12,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 153. [2018-01-24 20:56:12,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2018-01-24 20:56:12,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 165 transitions. [2018-01-24 20:56:12,593 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 165 transitions. Word has length 21 [2018-01-24 20:56:12,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:56:12,594 INFO L432 AbstractCegarLoop]: Abstraction has 153 states and 165 transitions. [2018-01-24 20:56:12,594 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-24 20:56:12,594 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 165 transitions. [2018-01-24 20:56:12,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-01-24 20:56:12,594 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:56:12,594 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] [2018-01-24 20:56:12,594 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:56:12,595 INFO L82 PathProgramCache]: Analyzing trace with hash -1095666644, now seen corresponding path program 1 times [2018-01-24 20:56:12,595 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:56:12,596 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:56:12,596 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:56:12,596 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:56:12,596 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:56:12,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:56:12,613 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:56:12,649 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 20:56:12,649 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:56:12,649 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 20:56:12,649 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:56:12,650 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 20:56:12,650 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 20:56:12,650 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:56:12,650 INFO L87 Difference]: Start difference. First operand 153 states and 165 transitions. Second operand 5 states. [2018-01-24 20:56:12,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:56:12,863 INFO L93 Difference]: Finished difference Result 199 states and 217 transitions. [2018-01-24 20:56:12,864 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 20:56:12,864 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2018-01-24 20:56:12,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:56:12,865 INFO L225 Difference]: With dead ends: 199 [2018-01-24 20:56:12,865 INFO L226 Difference]: Without dead ends: 198 [2018-01-24 20:56:12,865 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 20:56:12,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2018-01-24 20:56:12,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 152. [2018-01-24 20:56:12,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2018-01-24 20:56:12,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 163 transitions. [2018-01-24 20:56:12,872 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 163 transitions. Word has length 23 [2018-01-24 20:56:12,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:56:12,872 INFO L432 AbstractCegarLoop]: Abstraction has 152 states and 163 transitions. [2018-01-24 20:56:12,872 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 20:56:12,873 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 163 transitions. [2018-01-24 20:56:12,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-01-24 20:56:12,873 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:56:12,873 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] [2018-01-24 20:56:12,874 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:56:12,874 INFO L82 PathProgramCache]: Analyzing trace with hash -1095666643, now seen corresponding path program 1 times [2018-01-24 20:56:12,874 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:56:12,875 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:56:12,875 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:56:12,875 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:56:12,875 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:56:12,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:56:12,891 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:56:12,952 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 20:56:12,953 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:56:12,953 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 20:56:12,953 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:56:12,953 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 20:56:12,954 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 20:56:12,954 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:56:12,954 INFO L87 Difference]: Start difference. First operand 152 states and 163 transitions. Second operand 5 states. [2018-01-24 20:56:13,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:56:13,133 INFO L93 Difference]: Finished difference Result 226 states and 244 transitions. [2018-01-24 20:56:13,133 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 20:56:13,133 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2018-01-24 20:56:13,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:56:13,134 INFO L225 Difference]: With dead ends: 226 [2018-01-24 20:56:13,134 INFO L226 Difference]: Without dead ends: 225 [2018-01-24 20:56:13,135 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 20:56:13,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2018-01-24 20:56:13,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 151. [2018-01-24 20:56:13,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-01-24 20:56:13,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 161 transitions. [2018-01-24 20:56:13,141 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 161 transitions. Word has length 23 [2018-01-24 20:56:13,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:56:13,142 INFO L432 AbstractCegarLoop]: Abstraction has 151 states and 161 transitions. [2018-01-24 20:56:13,142 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 20:56:13,142 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 161 transitions. [2018-01-24 20:56:13,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-01-24 20:56:13,142 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:56:13,143 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] [2018-01-24 20:56:13,143 INFO L371 AbstractCegarLoop]: === Iteration 9 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:56:13,143 INFO L82 PathProgramCache]: Analyzing trace with hash 1665799662, now seen corresponding path program 1 times [2018-01-24 20:56:13,143 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:56:13,144 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:56:13,144 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:56:13,144 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:56:13,144 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:56:13,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:56:13,162 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:56:13,279 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 20:56:13,280 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:56:13,280 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-24 20:56:13,280 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:56:13,280 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-24 20:56:13,281 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-24 20:56:13,281 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-01-24 20:56:13,281 INFO L87 Difference]: Start difference. First operand 151 states and 161 transitions. Second operand 9 states. [2018-01-24 20:56:14,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:56:14,347 INFO L93 Difference]: Finished difference Result 160 states and 172 transitions. [2018-01-24 20:56:14,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-24 20:56:14,388 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2018-01-24 20:56:14,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:56:14,389 INFO L225 Difference]: With dead ends: 160 [2018-01-24 20:56:14,389 INFO L226 Difference]: Without dead ends: 159 [2018-01-24 20:56:14,390 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 2 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 20:56:14,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-01-24 20:56:14,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 150. [2018-01-24 20:56:14,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2018-01-24 20:56:14,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 160 transitions. [2018-01-24 20:56:14,396 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 160 transitions. Word has length 27 [2018-01-24 20:56:14,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:56:14,396 INFO L432 AbstractCegarLoop]: Abstraction has 150 states and 160 transitions. [2018-01-24 20:56:14,396 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-24 20:56:14,397 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 160 transitions. [2018-01-24 20:56:14,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-01-24 20:56:14,397 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:56:14,398 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] [2018-01-24 20:56:14,398 INFO L371 AbstractCegarLoop]: === Iteration 10 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:56:14,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1665799663, now seen corresponding path program 1 times [2018-01-24 20:56:14,398 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:56:14,399 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:56:14,399 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:56:14,399 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:56:14,399 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:56:14,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:56:14,418 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:56:14,589 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 20:56:14,590 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:56:14,590 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-01-24 20:56:14,590 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:56:14,590 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-24 20:56:14,590 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-24 20:56:14,590 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-01-24 20:56:14,591 INFO L87 Difference]: Start difference. First operand 150 states and 160 transitions. Second operand 10 states. [2018-01-24 20:56:15,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:56:15,214 INFO L93 Difference]: Finished difference Result 186 states and 199 transitions. [2018-01-24 20:56:15,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-24 20:56:15,214 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 27 [2018-01-24 20:56:15,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:56:15,215 INFO L225 Difference]: With dead ends: 186 [2018-01-24 20:56:15,215 INFO L226 Difference]: Without dead ends: 175 [2018-01-24 20:56:15,216 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=129, Invalid=291, Unknown=0, NotChecked=0, Total=420 [2018-01-24 20:56:15,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-01-24 20:56:15,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 155. [2018-01-24 20:56:15,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-01-24 20:56:15,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 165 transitions. [2018-01-24 20:56:15,224 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 165 transitions. Word has length 27 [2018-01-24 20:56:15,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:56:15,224 INFO L432 AbstractCegarLoop]: Abstraction has 155 states and 165 transitions. [2018-01-24 20:56:15,225 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-24 20:56:15,225 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 165 transitions. [2018-01-24 20:56:15,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-01-24 20:56:15,226 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:56:15,226 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:56:15,227 INFO L371 AbstractCegarLoop]: === Iteration 11 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:56:15,227 INFO L82 PathProgramCache]: Analyzing trace with hash 37442029, now seen corresponding path program 1 times [2018-01-24 20:56:15,227 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:56:15,228 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:56:15,228 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:56:15,228 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:56:15,228 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:56:15,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:56:15,246 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:56:15,292 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 20:56:15,292 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:56:15,293 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 20:56:15,293 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:56:15,293 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 20:56:15,293 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 20:56:15,293 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:56:15,294 INFO L87 Difference]: Start difference. First operand 155 states and 165 transitions. Second operand 5 states. [2018-01-24 20:56:15,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:56:15,531 INFO L93 Difference]: Finished difference Result 228 states and 246 transitions. [2018-01-24 20:56:15,531 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 20:56:15,531 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2018-01-24 20:56:15,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:56:15,532 INFO L225 Difference]: With dead ends: 228 [2018-01-24 20:56:15,532 INFO L226 Difference]: Without dead ends: 227 [2018-01-24 20:56:15,533 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 20:56:15,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-01-24 20:56:15,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 154. [2018-01-24 20:56:15,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2018-01-24 20:56:15,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 164 transitions. [2018-01-24 20:56:15,538 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 164 transitions. Word has length 34 [2018-01-24 20:56:15,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:56:15,538 INFO L432 AbstractCegarLoop]: Abstraction has 154 states and 164 transitions. [2018-01-24 20:56:15,538 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 20:56:15,539 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 164 transitions. [2018-01-24 20:56:15,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-01-24 20:56:15,540 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:56:15,540 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:56:15,540 INFO L371 AbstractCegarLoop]: === Iteration 12 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:56:15,540 INFO L82 PathProgramCache]: Analyzing trace with hash 37442030, now seen corresponding path program 1 times [2018-01-24 20:56:15,541 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:56:15,542 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:56:15,542 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:56:15,542 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:56:15,542 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:56:15,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:56:15,555 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:56:15,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:56:15,697 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:56:15,697 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 20:56:15,698 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:56:15,698 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 20:56:15,698 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 20:56:15,698 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:56:15,698 INFO L87 Difference]: Start difference. First operand 154 states and 164 transitions. Second operand 5 states. [2018-01-24 20:56:15,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:56:15,978 INFO L93 Difference]: Finished difference Result 255 states and 274 transitions. [2018-01-24 20:56:15,979 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 20:56:15,979 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2018-01-24 20:56:15,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:56:15,980 INFO L225 Difference]: With dead ends: 255 [2018-01-24 20:56:15,980 INFO L226 Difference]: Without dead ends: 254 [2018-01-24 20:56:15,981 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-24 20:56:15,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2018-01-24 20:56:15,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 153. [2018-01-24 20:56:15,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2018-01-24 20:56:15,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 163 transitions. [2018-01-24 20:56:15,987 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 163 transitions. Word has length 34 [2018-01-24 20:56:15,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:56:15,987 INFO L432 AbstractCegarLoop]: Abstraction has 153 states and 163 transitions. [2018-01-24 20:56:15,987 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 20:56:15,987 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 163 transitions. [2018-01-24 20:56:15,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-01-24 20:56:15,989 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:56:15,989 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:56:15,989 INFO L371 AbstractCegarLoop]: === Iteration 13 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:56:15,989 INFO L82 PathProgramCache]: Analyzing trace with hash -1696437201, now seen corresponding path program 1 times [2018-01-24 20:56:15,989 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:56:15,990 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:56:15,991 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:56:15,991 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:56:15,991 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:56:16,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:56:16,003 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:56:16,064 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 20:56:16,065 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:56:16,065 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-24 20:56:16,065 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:56:16,065 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-24 20:56:16,065 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-24 20:56:16,065 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-01-24 20:56:16,065 INFO L87 Difference]: Start difference. First operand 153 states and 163 transitions. Second operand 8 states. [2018-01-24 20:56:16,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:56:16,243 INFO L93 Difference]: Finished difference Result 222 states and 237 transitions. [2018-01-24 20:56:16,244 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-24 20:56:16,244 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2018-01-24 20:56:16,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:56:16,245 INFO L225 Difference]: With dead ends: 222 [2018-01-24 20:56:16,245 INFO L226 Difference]: Without dead ends: 183 [2018-01-24 20:56:16,245 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2018-01-24 20:56:16,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-01-24 20:56:16,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 153. [2018-01-24 20:56:16,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2018-01-24 20:56:16,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 162 transitions. [2018-01-24 20:56:16,251 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 162 transitions. Word has length 34 [2018-01-24 20:56:16,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:56:16,251 INFO L432 AbstractCegarLoop]: Abstraction has 153 states and 162 transitions. [2018-01-24 20:56:16,251 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-24 20:56:16,251 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 162 transitions. [2018-01-24 20:56:16,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-01-24 20:56:16,252 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:56:16,252 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:56:16,252 INFO L371 AbstractCegarLoop]: === Iteration 14 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:56:16,253 INFO L82 PathProgramCache]: Analyzing trace with hash -1185742895, now seen corresponding path program 1 times [2018-01-24 20:56:16,253 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:56:16,254 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:56:16,254 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:56:16,254 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:56:16,254 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:56:16,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:56:16,265 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:56:16,371 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:56:16,371 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 20:56:16,372 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-24 20:56:16,372 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 37 with the following transitions: [2018-01-24 20:56:16,374 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [11], [12], [13], [16], [19], [22], [26], [28], [31], [146], [150], [155], [159], [167], [168], [175], [179], [187], [193], [194], [195], [243], [245], [248], [301], [302], [306], [307], [308] [2018-01-24 20:56:16,420 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-24 20:56:16,421 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