java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-rb-sentinel_false-unreach-call_false-valid-memtrack.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-25 03:40:17,260 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-25 03:40:17,262 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-25 03:40:17,295 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-25 03:40:17,295 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-25 03:40:17,296 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-25 03:40:17,297 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-25 03:40:17,301 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-25 03:40:17,303 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-25 03:40:17,307 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-25 03:40:17,308 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-25 03:40:17,309 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-25 03:40:17,310 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-25 03:40:17,312 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-25 03:40:17,313 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-25 03:40:17,316 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-25 03:40:17,321 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-25 03:40:17,328 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-25 03:40:17,330 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-25 03:40:17,331 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-25 03:40:17,334 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-25 03:40:17,334 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-25 03:40:17,334 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-25 03:40:17,335 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-25 03:40:17,336 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-25 03:40:17,338 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-25 03:40:17,338 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-25 03:40:17,339 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-25 03:40:17,339 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-25 03:40:17,339 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-25 03:40:17,340 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-25 03:40:17,340 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf [2018-01-25 03:40:17,351 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-25 03:40:17,351 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-25 03:40:17,352 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-25 03:40:17,352 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-25 03:40:17,353 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-25 03:40:17,353 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-25 03:40:17,353 INFO L133 SettingsManager]: * Flatten before fatten=true [2018-01-25 03:40:17,353 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-25 03:40:17,353 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-25 03:40:17,354 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-25 03:40:17,354 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-25 03:40:17,354 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-25 03:40:17,355 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-25 03:40:17,355 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-25 03:40:17,355 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-25 03:40:17,355 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-25 03:40:17,355 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-25 03:40:17,356 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-25 03:40:17,356 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-25 03:40:17,356 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-25 03:40:17,356 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-25 03:40:17,356 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-25 03:40:17,357 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-25 03:40:17,357 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-25 03:40:17,357 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-25 03:40:17,357 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-25 03:40:17,357 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-25 03:40:17,357 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-25 03:40:17,358 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-25 03:40:17,358 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-25 03:40:17,358 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-25 03:40:17,358 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-25 03:40:17,358 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-25 03:40:17,359 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-25 03:40:17,359 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-25 03:40:17,360 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-25 03:40:17,360 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-25 03:40:17,430 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-25 03:40:17,457 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-25 03:40:17,469 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-25 03:40:17,471 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-25 03:40:17,471 INFO L276 PluginConnector]: CDTParser initialized [2018-01-25 03:40:17,472 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-rb-sentinel_false-unreach-call_false-valid-memtrack.i [2018-01-25 03:40:17,817 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-25 03:40:17,823 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-25 03:40:17,824 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-25 03:40:17,824 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-25 03:40:17,831 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-25 03:40:17,833 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 03:40:17" (1/1) ... [2018-01-25 03:40:17,837 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a45686f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:40:17, skipping insertion in model container [2018-01-25 03:40:17,837 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 03:40:17" (1/1) ... [2018-01-25 03:40:17,857 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 03:40:17,930 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 03:40:18,115 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 03:40:18,159 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 03:40:18,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:40:18 WrapperNode [2018-01-25 03:40:18,175 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-25 03:40:18,176 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-25 03:40:18,176 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-25 03:40:18,176 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-25 03:40:18,193 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:40:18" (1/1) ... [2018-01-25 03:40:18,193 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:40:18" (1/1) ... [2018-01-25 03:40:18,208 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:40:18" (1/1) ... [2018-01-25 03:40:18,208 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:40:18" (1/1) ... [2018-01-25 03:40:18,215 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:40:18" (1/1) ... [2018-01-25 03:40:18,221 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:40:18" (1/1) ... [2018-01-25 03:40:18,223 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:40:18" (1/1) ... [2018-01-25 03:40:18,226 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-25 03:40:18,227 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-25 03:40:18,227 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-25 03:40:18,227 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-25 03:40:18,228 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:40:18" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-25 03:40:18,331 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-25 03:40:18,331 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-25 03:40:18,334 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-25 03:40:18,335 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-25 03:40:18,335 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-25 03:40:18,335 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-25 03:40:18,335 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-25 03:40:18,335 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-25 03:40:18,335 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-25 03:40:18,336 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-25 03:40:18,336 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-25 03:40:18,336 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-25 03:40:18,336 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-25 03:40:18,336 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-25 03:40:18,336 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-25 03:40:18,336 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-25 03:40:18,337 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-25 03:40:19,219 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-25 03:40:19,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 03:40:19 BoogieIcfgContainer [2018-01-25 03:40:19,220 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-25 03:40:19,221 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-25 03:40:19,221 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-25 03:40:19,223 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-25 03:40:19,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.01 03:40:17" (1/3) ... [2018-01-25 03:40:19,224 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a994d94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 03:40:19, skipping insertion in model container [2018-01-25 03:40:19,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:40:18" (2/3) ... [2018-01-25 03:40:19,225 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a994d94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 03:40:19, skipping insertion in model container [2018-01-25 03:40:19,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 03:40:19" (3/3) ... [2018-01-25 03:40:19,228 INFO L105 eAbstractionObserver]: Analyzing ICFG dll-rb-sentinel_false-unreach-call_false-valid-memtrack.i [2018-01-25 03:40:19,238 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-25 03:40:19,247 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 67 error locations. [2018-01-25 03:40:19,321 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-25 03:40:19,321 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-25 03:40:19,322 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-25 03:40:19,322 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-25 03:40:19,331 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-25 03:40:19,331 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-25 03:40:19,331 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-25 03:40:19,332 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-25 03:40:19,333 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-25 03:40:19,378 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states. [2018-01-25 03:40:19,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-25 03:40:19,384 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:40:19,385 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:40:19,386 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr51RequiresViolation, mainErr66EnsuresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, 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, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:40:19,392 INFO L82 PathProgramCache]: Analyzing trace with hash 726209746, now seen corresponding path program 1 times [2018-01-25 03:40:19,396 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:40:19,472 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:40:19,472 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:40:19,473 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:40:19,473 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:40:19,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:40:19,537 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:40:19,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:40:19,624 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:40:19,624 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 03:40:19,624 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:40:19,626 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 03:40:19,640 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 03:40:19,641 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 03:40:19,644 INFO L87 Difference]: Start difference. First operand 160 states. Second operand 4 states. [2018-01-25 03:40:20,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:40:20,154 INFO L93 Difference]: Finished difference Result 316 states and 377 transitions. [2018-01-25 03:40:20,154 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-25 03:40:20,156 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-25 03:40:20,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:40:20,168 INFO L225 Difference]: With dead ends: 316 [2018-01-25 03:40:20,169 INFO L226 Difference]: Without dead ends: 177 [2018-01-25 03:40:20,172 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-25 03:40:20,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2018-01-25 03:40:20,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 154. [2018-01-25 03:40:20,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2018-01-25 03:40:20,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 159 transitions. [2018-01-25 03:40:20,225 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 159 transitions. Word has length 8 [2018-01-25 03:40:20,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:40:20,225 INFO L432 AbstractCegarLoop]: Abstraction has 154 states and 159 transitions. [2018-01-25 03:40:20,226 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 03:40:20,226 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 159 transitions. [2018-01-25 03:40:20,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-25 03:40:20,226 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:40:20,226 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:40:20,227 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr51RequiresViolation, mainErr66EnsuresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, 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, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:40:20,227 INFO L82 PathProgramCache]: Analyzing trace with hash 726209747, now seen corresponding path program 1 times [2018-01-25 03:40:20,227 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:40:20,229 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:40:20,229 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:40:20,229 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:40:20,234 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:40:20,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:40:20,262 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:40:20,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:40:20,487 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:40:20,488 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 03:40:20,488 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:40:20,489 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 03:40:20,490 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 03:40:20,490 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 03:40:20,490 INFO L87 Difference]: Start difference. First operand 154 states and 159 transitions. Second operand 4 states. [2018-01-25 03:40:20,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:40:20,733 INFO L93 Difference]: Finished difference Result 154 states and 159 transitions. [2018-01-25 03:40:20,733 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-25 03:40:20,733 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-25 03:40:20,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:40:20,736 INFO L225 Difference]: With dead ends: 154 [2018-01-25 03:40:20,736 INFO L226 Difference]: Without dead ends: 151 [2018-01-25 03:40:20,737 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-25 03:40:20,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-01-25 03:40:20,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2018-01-25 03:40:20,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-01-25 03:40:20,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 156 transitions. [2018-01-25 03:40:20,751 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 156 transitions. Word has length 8 [2018-01-25 03:40:20,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:40:20,751 INFO L432 AbstractCegarLoop]: Abstraction has 151 states and 156 transitions. [2018-01-25 03:40:20,752 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 03:40:20,752 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 156 transitions. [2018-01-25 03:40:20,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-01-25 03:40:20,752 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:40:20,752 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:40:20,753 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr51RequiresViolation, mainErr66EnsuresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, 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, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:40:20,753 INFO L82 PathProgramCache]: Analyzing trace with hash 3311897, now seen corresponding path program 1 times [2018-01-25 03:40:20,753 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:40:20,755 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:40:20,755 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:40:20,755 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:40:20,755 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:40:20,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:40:20,779 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:40:20,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:40:20,824 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:40:20,830 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 03:40:20,830 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:40:20,830 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 03:40:20,831 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 03:40:20,831 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 03:40:20,831 INFO L87 Difference]: Start difference. First operand 151 states and 156 transitions. Second operand 4 states. [2018-01-25 03:40:21,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:40:21,005 INFO L93 Difference]: Finished difference Result 170 states and 180 transitions. [2018-01-25 03:40:21,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 03:40:21,005 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2018-01-25 03:40:21,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:40:21,007 INFO L225 Difference]: With dead ends: 170 [2018-01-25 03:40:21,007 INFO L226 Difference]: Without dead ends: 162 [2018-01-25 03:40:21,007 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-25 03:40:21,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2018-01-25 03:40:21,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 147. [2018-01-25 03:40:21,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-01-25 03:40:21,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 154 transitions. [2018-01-25 03:40:21,020 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 154 transitions. Word has length 13 [2018-01-25 03:40:21,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:40:21,021 INFO L432 AbstractCegarLoop]: Abstraction has 147 states and 154 transitions. [2018-01-25 03:40:21,021 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 03:40:21,021 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 154 transitions. [2018-01-25 03:40:21,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-01-25 03:40:21,021 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:40:21,022 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:40:21,022 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr51RequiresViolation, mainErr66EnsuresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, 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, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:40:21,022 INFO L82 PathProgramCache]: Analyzing trace with hash 3311898, now seen corresponding path program 1 times [2018-01-25 03:40:21,022 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:40:21,024 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:40:21,024 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:40:21,024 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:40:21,024 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:40:21,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:40:21,042 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:40:21,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:40:21,103 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:40:21,103 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 03:40:21,103 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:40:21,104 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 03:40:21,104 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 03:40:21,104 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 03:40:21,104 INFO L87 Difference]: Start difference. First operand 147 states and 154 transitions. Second operand 4 states. [2018-01-25 03:40:21,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:40:21,252 INFO L93 Difference]: Finished difference Result 167 states and 173 transitions. [2018-01-25 03:40:21,253 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-25 03:40:21,254 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2018-01-25 03:40:21,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:40:21,255 INFO L225 Difference]: With dead ends: 167 [2018-01-25 03:40:21,255 INFO L226 Difference]: Without dead ends: 159 [2018-01-25 03:40:21,256 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-25 03:40:21,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-01-25 03:40:21,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 151. [2018-01-25 03:40:21,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-01-25 03:40:21,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 158 transitions. [2018-01-25 03:40:21,267 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 158 transitions. Word has length 13 [2018-01-25 03:40:21,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:40:21,268 INFO L432 AbstractCegarLoop]: Abstraction has 151 states and 158 transitions. [2018-01-25 03:40:21,268 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 03:40:21,268 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 158 transitions. [2018-01-25 03:40:21,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-01-25 03:40:21,269 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:40:21,269 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] [2018-01-25 03:40:21,269 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr51RequiresViolation, mainErr66EnsuresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, 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, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:40:21,269 INFO L82 PathProgramCache]: Analyzing trace with hash -969711578, now seen corresponding path program 1 times [2018-01-25 03:40:21,270 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:40:21,271 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:40:21,271 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:40:21,271 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:40:21,271 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:40:21,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:40:21,301 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:40:21,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:40:21,404 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:40:21,404 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 03:40:21,404 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:40:21,404 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 03:40:21,404 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 03:40:21,404 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 03:40:21,405 INFO L87 Difference]: Start difference. First operand 151 states and 158 transitions. Second operand 4 states. [2018-01-25 03:40:21,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:40:21,973 INFO L93 Difference]: Finished difference Result 170 states and 178 transitions. [2018-01-25 03:40:21,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 03:40:21,973 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2018-01-25 03:40:21,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:40:21,974 INFO L225 Difference]: With dead ends: 170 [2018-01-25 03:40:21,975 INFO L226 Difference]: Without dead ends: 154 [2018-01-25 03:40:21,975 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-25 03:40:21,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2018-01-25 03:40:21,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 139. [2018-01-25 03:40:21,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-01-25 03:40:21,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 148 transitions. [2018-01-25 03:40:21,992 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 148 transitions. Word has length 21 [2018-01-25 03:40:21,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:40:21,993 INFO L432 AbstractCegarLoop]: Abstraction has 139 states and 148 transitions. [2018-01-25 03:40:21,993 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 03:40:21,993 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 148 transitions. [2018-01-25 03:40:21,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-01-25 03:40:21,994 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:40:21,994 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] [2018-01-25 03:40:21,995 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr51RequiresViolation, mainErr66EnsuresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, 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, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:40:21,995 INFO L82 PathProgramCache]: Analyzing trace with hash -969711577, now seen corresponding path program 1 times [2018-01-25 03:40:21,995 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:40:21,996 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:40:21,997 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:40:21,997 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:40:21,997 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:40:22,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:40:22,025 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:40:22,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:40:22,144 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:40:22,144 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-25 03:40:22,144 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:40:22,145 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-25 03:40:22,145 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-25 03:40:22,145 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-01-25 03:40:22,145 INFO L87 Difference]: Start difference. First operand 139 states and 148 transitions. Second operand 7 states. [2018-01-25 03:40:22,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:40:22,511 INFO L93 Difference]: Finished difference Result 182 states and 192 transitions. [2018-01-25 03:40:22,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 03:40:22,511 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2018-01-25 03:40:22,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:40:22,512 INFO L225 Difference]: With dead ends: 182 [2018-01-25 03:40:22,512 INFO L226 Difference]: Without dead ends: 175 [2018-01-25 03:40:22,513 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-01-25 03:40:22,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-01-25 03:40:22,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 150. [2018-01-25 03:40:22,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2018-01-25 03:40:22,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 162 transitions. [2018-01-25 03:40:22,521 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 162 transitions. Word has length 21 [2018-01-25 03:40:22,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:40:22,521 INFO L432 AbstractCegarLoop]: Abstraction has 150 states and 162 transitions. [2018-01-25 03:40:22,521 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-25 03:40:22,521 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 162 transitions. [2018-01-25 03:40:22,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-01-25 03:40:22,529 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:40:22,529 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] [2018-01-25 03:40:22,529 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr51RequiresViolation, mainErr66EnsuresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, 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, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:40:22,529 INFO L82 PathProgramCache]: Analyzing trace with hash 115077033, now seen corresponding path program 1 times [2018-01-25 03:40:22,529 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:40:22,531 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:40:22,531 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:40:22,531 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:40:22,531 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:40:22,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:40:22,549 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:40:22,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:40:22,615 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:40:22,615 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 03:40:22,615 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:40:22,616 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 03:40:22,616 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 03:40:22,616 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 03:40:22,617 INFO L87 Difference]: Start difference. First operand 150 states and 162 transitions. Second operand 5 states. [2018-01-25 03:40:22,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:40:22,805 INFO L93 Difference]: Finished difference Result 198 states and 215 transitions. [2018-01-25 03:40:22,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 03:40:22,805 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2018-01-25 03:40:22,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:40:22,806 INFO L225 Difference]: With dead ends: 198 [2018-01-25 03:40:22,806 INFO L226 Difference]: Without dead ends: 197 [2018-01-25 03:40:22,807 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 [2018-01-25 03:40:22,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2018-01-25 03:40:22,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 149. [2018-01-25 03:40:22,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-01-25 03:40:22,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 160 transitions. [2018-01-25 03:40:22,815 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 160 transitions. Word has length 23 [2018-01-25 03:40:22,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:40:22,815 INFO L432 AbstractCegarLoop]: Abstraction has 149 states and 160 transitions. [2018-01-25 03:40:22,815 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 03:40:22,815 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 160 transitions. [2018-01-25 03:40:22,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-01-25 03:40:22,816 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:40:22,816 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] [2018-01-25 03:40:22,816 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr51RequiresViolation, mainErr66EnsuresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, 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, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:40:22,816 INFO L82 PathProgramCache]: Analyzing trace with hash 115077034, now seen corresponding path program 1 times [2018-01-25 03:40:22,816 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:40:22,817 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:40:22,817 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:40:22,817 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:40:22,818 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:40:22,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:40:22,846 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:40:22,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:40:22,931 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:40:22,931 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 03:40:22,931 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:40:22,932 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 03:40:22,932 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 03:40:22,932 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 03:40:22,932 INFO L87 Difference]: Start difference. First operand 149 states and 160 transitions. Second operand 5 states. [2018-01-25 03:40:23,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:40:23,191 INFO L93 Difference]: Finished difference Result 220 states and 238 transitions. [2018-01-25 03:40:23,192 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 03:40:23,192 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2018-01-25 03:40:23,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:40:23,193 INFO L225 Difference]: With dead ends: 220 [2018-01-25 03:40:23,193 INFO L226 Difference]: Without dead ends: 219 [2018-01-25 03:40:23,194 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-25 03:40:23,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-01-25 03:40:23,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 148. [2018-01-25 03:40:23,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2018-01-25 03:40:23,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 158 transitions. [2018-01-25 03:40:23,200 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 158 transitions. Word has length 23 [2018-01-25 03:40:23,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:40:23,200 INFO L432 AbstractCegarLoop]: Abstraction has 148 states and 158 transitions. [2018-01-25 03:40:23,200 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 03:40:23,200 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 158 transitions. [2018-01-25 03:40:23,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-01-25 03:40:23,201 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:40:23,201 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] [2018-01-25 03:40:23,201 INFO L371 AbstractCegarLoop]: === Iteration 9 === [mainErr51RequiresViolation, mainErr66EnsuresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, 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, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:40:23,202 INFO L82 PathProgramCache]: Analyzing trace with hash 1386253035, now seen corresponding path program 1 times [2018-01-25 03:40:23,202 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:40:23,203 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:40:23,203 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:40:23,203 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:40:23,203 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:40:23,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:40:23,230 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:40:23,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:40:23,423 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:40:23,423 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-25 03:40:23,423 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:40:23,423 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-25 03:40:23,423 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-25 03:40:23,423 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-01-25 03:40:23,424 INFO L87 Difference]: Start difference. First operand 148 states and 158 transitions. Second operand 9 states. [2018-01-25 03:40:24,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:40:24,238 INFO L93 Difference]: Finished difference Result 162 states and 172 transitions. [2018-01-25 03:40:24,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-25 03:40:24,239 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2018-01-25 03:40:24,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:40:24,240 INFO L225 Difference]: With dead ends: 162 [2018-01-25 03:40:24,240 INFO L226 Difference]: Without dead ends: 161 [2018-01-25 03:40:24,241 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2018-01-25 03:40:24,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2018-01-25 03:40:24,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 147. [2018-01-25 03:40:24,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-01-25 03:40:24,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 157 transitions. [2018-01-25 03:40:24,250 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 157 transitions. Word has length 27 [2018-01-25 03:40:24,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:40:24,250 INFO L432 AbstractCegarLoop]: Abstraction has 147 states and 157 transitions. [2018-01-25 03:40:24,251 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-25 03:40:24,251 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 157 transitions. [2018-01-25 03:40:24,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-01-25 03:40:24,251 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:40:24,252 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] [2018-01-25 03:40:24,252 INFO L371 AbstractCegarLoop]: === Iteration 10 === [mainErr51RequiresViolation, mainErr66EnsuresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, 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, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:40:24,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1386253036, now seen corresponding path program 1 times [2018-01-25 03:40:24,252 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:40:24,253 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:40:24,254 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:40:24,254 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:40:24,254 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:40:24,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:40:24,275 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:40:24,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:40:24,570 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:40:24,570 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-01-25 03:40:24,570 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:40:24,571 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-25 03:40:24,571 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-25 03:40:24,571 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-01-25 03:40:24,571 INFO L87 Difference]: Start difference. First operand 147 states and 157 transitions. Second operand 10 states. [2018-01-25 03:40:25,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:40:27,278 INFO L93 Difference]: Finished difference Result 188 states and 199 transitions. [2018-01-25 03:40:27,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-25 03:40:27,281 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 27 [2018-01-25 03:40:27,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:40:27,283 INFO L225 Difference]: With dead ends: 188 [2018-01-25 03:40:27,283 INFO L226 Difference]: Without dead ends: 177 [2018-01-25 03:40:27,284 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=129, Invalid=291, Unknown=0, NotChecked=0, Total=420 [2018-01-25 03:40:27,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2018-01-25 03:40:27,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 152. [2018-01-25 03:40:27,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2018-01-25 03:40:27,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 162 transitions. [2018-01-25 03:40:27,292 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 162 transitions. Word has length 27 [2018-01-25 03:40:27,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:40:27,292 INFO L432 AbstractCegarLoop]: Abstraction has 152 states and 162 transitions. [2018-01-25 03:40:27,292 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-25 03:40:27,292 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 162 transitions. [2018-01-25 03:40:27,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-01-25 03:40:27,294 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:40:27,294 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:40:27,294 INFO L371 AbstractCegarLoop]: === Iteration 11 === [mainErr51RequiresViolation, mainErr66EnsuresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, 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, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:40:27,294 INFO L82 PathProgramCache]: Analyzing trace with hash 78293977, now seen corresponding path program 1 times [2018-01-25 03:40:27,294 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:40:27,296 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:40:27,296 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:40:27,296 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:40:27,296 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:40:27,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:40:27,310 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:40:27,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:40:27,397 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:40:27,397 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-25 03:40:27,397 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:40:27,398 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-25 03:40:27,398 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-25 03:40:27,398 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-01-25 03:40:27,398 INFO L87 Difference]: Start difference. First operand 152 states and 162 transitions. Second operand 8 states. [2018-01-25 03:40:27,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:40:27,682 INFO L93 Difference]: Finished difference Result 216 states and 231 transitions. [2018-01-25 03:40:27,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-25 03:40:27,682 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2018-01-25 03:40:27,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:40:27,683 INFO L225 Difference]: With dead ends: 216 [2018-01-25 03:40:27,684 INFO L226 Difference]: Without dead ends: 180 [2018-01-25 03:40:27,684 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2018-01-25 03:40:27,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2018-01-25 03:40:27,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 152. [2018-01-25 03:40:27,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2018-01-25 03:40:27,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 161 transitions. [2018-01-25 03:40:27,689 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 161 transitions. Word has length 33 [2018-01-25 03:40:27,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:40:27,690 INFO L432 AbstractCegarLoop]: Abstraction has 152 states and 161 transitions. [2018-01-25 03:40:27,690 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-25 03:40:27,690 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 161 transitions. [2018-01-25 03:40:27,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-01-25 03:40:27,691 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:40:27,691 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] [2018-01-25 03:40:27,691 INFO L371 AbstractCegarLoop]: === Iteration 12 === [mainErr51RequiresViolation, mainErr66EnsuresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, 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, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:40:27,692 INFO L82 PathProgramCache]: Analyzing trace with hash -133974448, now seen corresponding path program 1 times [2018-01-25 03:40:27,692 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:40:27,693 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:40:27,693 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:40:27,693 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:40:27,693 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:40:27,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:40:27,707 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:40:27,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:40:27,762 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:40:27,763 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 03:40:27,763 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:40:27,763 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 03:40:27,763 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 03:40:27,763 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 03:40:27,763 INFO L87 Difference]: Start difference. First operand 152 states and 161 transitions. Second operand 5 states. [2018-01-25 03:40:28,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:40:28,281 INFO L93 Difference]: Finished difference Result 227 states and 242 transitions. [2018-01-25 03:40:28,282 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 03:40:28,283 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2018-01-25 03:40:28,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:40:28,284 INFO L225 Difference]: With dead ends: 227 [2018-01-25 03:40:28,284 INFO L226 Difference]: Without dead ends: 226 [2018-01-25 03:40:28,285 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 [2018-01-25 03:40:28,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2018-01-25 03:40:28,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 151. [2018-01-25 03:40:28,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-01-25 03:40:28,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 160 transitions. [2018-01-25 03:40:28,293 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 160 transitions. Word has length 34 [2018-01-25 03:40:28,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:40:28,293 INFO L432 AbstractCegarLoop]: Abstraction has 151 states and 160 transitions. [2018-01-25 03:40:28,293 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 03:40:28,293 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 160 transitions. [2018-01-25 03:40:28,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-01-25 03:40:28,295 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:40:28,295 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] [2018-01-25 03:40:28,295 INFO L371 AbstractCegarLoop]: === Iteration 13 === [mainErr51RequiresViolation, mainErr66EnsuresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, 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, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:40:28,295 INFO L82 PathProgramCache]: Analyzing trace with hash -133974447, now seen corresponding path program 1 times [2018-01-25 03:40:28,295 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:40:28,296 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:40:28,297 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:40:28,297 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:40:28,297 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:40:28,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:40:28,324 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:40:28,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:40:28,596 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:40:28,596 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 03:40:28,596 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:40:28,597 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 03:40:28,597 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 03:40:28,597 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 03:40:28,598 INFO L87 Difference]: Start difference. First operand 151 states and 160 transitions. Second operand 5 states. [2018-01-25 03:40:29,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:40:29,053 INFO L93 Difference]: Finished difference Result 249 states and 266 transitions. [2018-01-25 03:40:29,054 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 03:40:29,054 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2018-01-25 03:40:29,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:40:29,055 INFO L225 Difference]: With dead ends: 249 [2018-01-25 03:40:29,055 INFO L226 Difference]: Without dead ends: 248 [2018-01-25 03:40:29,056 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-25 03:40:29,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2018-01-25 03:40:29,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 150. [2018-01-25 03:40:29,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2018-01-25 03:40:29,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 159 transitions. [2018-01-25 03:40:29,069 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 159 transitions. Word has length 34 [2018-01-25 03:40:29,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:40:29,070 INFO L432 AbstractCegarLoop]: Abstraction has 150 states and 159 transitions. [2018-01-25 03:40:29,070 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 03:40:29,070 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 159 transitions. [2018-01-25 03:40:29,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-01-25 03:40:29,074 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:40:29,074 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] [2018-01-25 03:40:29,075 INFO L371 AbstractCegarLoop]: === Iteration 14 === [mainErr51RequiresViolation, mainErr66EnsuresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, 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, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:40:29,075 INFO L82 PathProgramCache]: Analyzing trace with hash 1586747252, now seen corresponding path program 1 times [2018-01-25 03:40:29,075 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:40:29,076 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:40:29,076 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:40:29,076 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:40:29,076 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:40:29,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:40:29,093 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:40:29,273 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:40:29,273 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-25 03:40:29,273 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-25 03:40:29,276 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 37 with the following transitions: [2018-01-25 03:40:29,278 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], [298], [299], [303], [304], [305] [2018-01-25 03:40:29,342 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-25 03:40:29,343 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