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/list-ext-properties/test-0513_1_true-valid-memsafety.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-25 03:20:55,154 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-25 03:20:55,156 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-25 03:20:55,170 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-25 03:20:55,170 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-25 03:20:55,171 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-25 03:20:55,172 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-25 03:20:55,174 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-25 03:20:55,176 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-25 03:20:55,177 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-25 03:20:55,178 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-25 03:20:55,178 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-25 03:20:55,179 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-25 03:20:55,181 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-25 03:20:55,182 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-25 03:20:55,184 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-25 03:20:55,186 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-25 03:20:55,188 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-25 03:20:55,189 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-25 03:20:55,191 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-25 03:20:55,193 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-25 03:20:55,193 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-25 03:20:55,193 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-25 03:20:55,194 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-25 03:20:55,195 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-25 03:20:55,196 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-25 03:20:55,196 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-25 03:20:55,197 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-25 03:20:55,197 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-25 03:20:55,197 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-25 03:20:55,198 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-25 03:20:55,198 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 03:20:55,209 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-25 03:20:55,209 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-25 03:20:55,210 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-25 03:20:55,210 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-25 03:20:55,210 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-25 03:20:55,211 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-25 03:20:55,211 INFO L133 SettingsManager]: * Flatten before fatten=true [2018-01-25 03:20:55,211 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-25 03:20:55,211 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-25 03:20:55,212 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-25 03:20:55,212 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-25 03:20:55,212 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-25 03:20:55,213 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-25 03:20:55,213 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-25 03:20:55,213 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-25 03:20:55,213 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-25 03:20:55,213 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-25 03:20:55,214 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-25 03:20:55,214 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-25 03:20:55,214 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-25 03:20:55,214 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-25 03:20:55,215 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-25 03:20:55,215 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-25 03:20:55,215 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-25 03:20:55,215 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-25 03:20:55,215 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-25 03:20:55,216 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-25 03:20:55,216 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-25 03:20:55,216 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-25 03:20:55,216 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-25 03:20:55,216 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-25 03:20:55,217 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-25 03:20:55,217 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-25 03:20:55,217 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-25 03:20:55,217 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-25 03:20:55,218 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-25 03:20:55,218 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-25 03:20:55,253 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-25 03:20:55,267 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-25 03:20:55,271 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-25 03:20:55,272 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-25 03:20:55,273 INFO L276 PluginConnector]: CDTParser initialized [2018-01-25 03:20:55,274 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext-properties/test-0513_1_true-valid-memsafety.i [2018-01-25 03:20:55,476 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-25 03:20:55,483 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-25 03:20:55,483 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-25 03:20:55,483 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-25 03:20:55,489 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-25 03:20:55,490 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 03:20:55" (1/1) ... [2018-01-25 03:20:55,492 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@365d5287 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:20:55, skipping insertion in model container [2018-01-25 03:20:55,492 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 03:20:55" (1/1) ... [2018-01-25 03:20:55,512 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 03:20:55,555 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 03:20:55,683 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 03:20:55,711 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 03:20:55,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:20:55 WrapperNode [2018-01-25 03:20:55,722 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-25 03:20:55,723 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-25 03:20:55,723 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-25 03:20:55,723 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-25 03:20:55,735 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:20:55" (1/1) ... [2018-01-25 03:20:55,736 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:20:55" (1/1) ... [2018-01-25 03:20:55,746 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:20:55" (1/1) ... [2018-01-25 03:20:55,746 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:20:55" (1/1) ... [2018-01-25 03:20:55,753 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:20:55" (1/1) ... [2018-01-25 03:20:55,758 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:20:55" (1/1) ... [2018-01-25 03:20:55,760 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:20:55" (1/1) ... [2018-01-25 03:20:55,762 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-25 03:20:55,762 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-25 03:20:55,762 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-25 03:20:55,763 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-25 03:20:55,764 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:20:55" (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 03:20:55,817 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-25 03:20:55,817 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-25 03:20:55,818 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-25 03:20:55,818 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-25 03:20:55,818 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-25 03:20:55,818 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-25 03:20:55,818 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-25 03:20:55,818 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-25 03:20:55,819 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-25 03:20:55,819 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-25 03:20:55,819 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-25 03:20:55,819 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-25 03:20:55,819 INFO L128 BoogieDeclarations]: Found specification of procedure abort [2018-01-25 03:20:55,819 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-25 03:20:55,820 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-25 03:20:55,820 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-25 03:20:55,820 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-25 03:20:56,470 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-25 03:20:56,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 03:20:56 BoogieIcfgContainer [2018-01-25 03:20:56,471 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-25 03:20:56,473 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-25 03:20:56,473 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-25 03:20:56,475 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-25 03:20:56,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.01 03:20:55" (1/3) ... [2018-01-25 03:20:56,476 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49cde122 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 03:20:56, skipping insertion in model container [2018-01-25 03:20:56,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:20:55" (2/3) ... [2018-01-25 03:20:56,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49cde122 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 03:20:56, skipping insertion in model container [2018-01-25 03:20:56,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 03:20:56" (3/3) ... [2018-01-25 03:20:56,479 INFO L105 eAbstractionObserver]: Analyzing ICFG test-0513_1_true-valid-memsafety.i [2018-01-25 03:20:56,486 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-25 03:20:56,493 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 67 error locations. [2018-01-25 03:20:56,535 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-25 03:20:56,535 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-25 03:20:56,535 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-25 03:20:56,536 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-25 03:20:56,536 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-25 03:20:56,536 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-25 03:20:56,536 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-25 03:20:56,536 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-25 03:20:56,537 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-25 03:20:56,558 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states. [2018-01-25 03:20:56,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-01-25 03:20:56,565 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:20:56,566 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:20:56,567 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 03:20:56,570 INFO L82 PathProgramCache]: Analyzing trace with hash 1366809009, now seen corresponding path program 1 times [2018-01-25 03:20:56,573 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:20:56,616 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:20:56,617 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:20:56,617 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:20:56,617 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:20:56,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:20:56,662 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:20:56,690 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 03:20:56,692 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:20:56,693 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-25 03:20:56,693 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:20:56,696 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-25 03:20:56,708 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-25 03:20:56,709 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-25 03:20:56,711 INFO L87 Difference]: Start difference. First operand 155 states. Second operand 2 states. [2018-01-25 03:20:56,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:20:56,836 INFO L93 Difference]: Finished difference Result 304 states and 342 transitions. [2018-01-25 03:20:56,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-25 03:20:56,838 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2018-01-25 03:20:56,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:20:56,853 INFO L225 Difference]: With dead ends: 304 [2018-01-25 03:20:56,853 INFO L226 Difference]: Without dead ends: 152 [2018-01-25 03:20:56,859 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-25 03:20:56,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2018-01-25 03:20:56,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2018-01-25 03:20:56,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2018-01-25 03:20:56,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 166 transitions. [2018-01-25 03:20:56,910 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 166 transitions. Word has length 9 [2018-01-25 03:20:56,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:20:56,911 INFO L432 AbstractCegarLoop]: Abstraction has 152 states and 166 transitions. [2018-01-25 03:20:56,911 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-25 03:20:56,911 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 166 transitions. [2018-01-25 03:20:56,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-01-25 03:20:56,912 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:20:56,912 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:20:56,912 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 03:20:56,913 INFO L82 PathProgramCache]: Analyzing trace with hash -26359990, now seen corresponding path program 1 times [2018-01-25 03:20:56,913 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:20:56,914 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:20:56,914 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:20:56,914 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:20:56,915 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:20:56,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:20:56,932 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:20:56,984 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 03:20:56,984 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:20:56,985 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-25 03:20:56,985 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:20:56,987 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-25 03:20:56,987 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-25 03:20:56,987 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-25 03:20:56,988 INFO L87 Difference]: Start difference. First operand 152 states and 166 transitions. Second operand 3 states. [2018-01-25 03:20:57,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:20:57,191 INFO L93 Difference]: Finished difference Result 197 states and 214 transitions. [2018-01-25 03:20:57,191 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-25 03:20:57,191 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2018-01-25 03:20:57,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:20:57,195 INFO L225 Difference]: With dead ends: 197 [2018-01-25 03:20:57,195 INFO L226 Difference]: Without dead ends: 195 [2018-01-25 03:20:57,196 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-25 03:20:57,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-01-25 03:20:57,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 157. [2018-01-25 03:20:57,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-01-25 03:20:57,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 173 transitions. [2018-01-25 03:20:57,207 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 173 transitions. Word has length 12 [2018-01-25 03:20:57,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:20:57,207 INFO L432 AbstractCegarLoop]: Abstraction has 157 states and 173 transitions. [2018-01-25 03:20:57,207 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-25 03:20:57,208 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 173 transitions. [2018-01-25 03:20:57,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-01-25 03:20:57,208 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:20:57,208 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:20:57,209 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 03:20:57,209 INFO L82 PathProgramCache]: Analyzing trace with hash -817163438, now seen corresponding path program 1 times [2018-01-25 03:20:57,209 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:20:57,210 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:20:57,210 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:20:57,211 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:20:57,211 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:20:57,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:20:57,226 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:20:57,257 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 03:20:57,257 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:20:57,258 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 03:20:57,258 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:20:57,258 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-25 03:20:57,258 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-25 03:20:57,259 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-25 03:20:57,259 INFO L87 Difference]: Start difference. First operand 157 states and 173 transitions. Second operand 3 states. [2018-01-25 03:20:57,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:20:57,343 INFO L93 Difference]: Finished difference Result 326 states and 359 transitions. [2018-01-25 03:20:57,344 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-25 03:20:57,344 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2018-01-25 03:20:57,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:20:57,345 INFO L225 Difference]: With dead ends: 326 [2018-01-25 03:20:57,345 INFO L226 Difference]: Without dead ends: 179 [2018-01-25 03:20:57,346 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-25 03:20:57,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-01-25 03:20:57,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 169. [2018-01-25 03:20:57,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-01-25 03:20:57,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 195 transitions. [2018-01-25 03:20:57,358 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 195 transitions. Word has length 13 [2018-01-25 03:20:57,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:20:57,358 INFO L432 AbstractCegarLoop]: Abstraction has 169 states and 195 transitions. [2018-01-25 03:20:57,358 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-25 03:20:57,358 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 195 transitions. [2018-01-25 03:20:57,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-01-25 03:20:57,359 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:20:57,359 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:20:57,359 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 03:20:57,360 INFO L82 PathProgramCache]: Analyzing trace with hash 437426512, now seen corresponding path program 1 times [2018-01-25 03:20:57,360 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:20:57,361 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:20:57,361 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:20:57,361 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:20:57,361 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:20:57,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:20:57,377 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:20:57,411 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 03:20:57,412 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:20:57,412 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 03:20:57,412 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:20:57,412 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 03:20:57,413 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 03:20:57,413 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 03:20:57,413 INFO L87 Difference]: Start difference. First operand 169 states and 195 transitions. Second operand 4 states. [2018-01-25 03:20:57,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:20:57,673 INFO L93 Difference]: Finished difference Result 245 states and 275 transitions. [2018-01-25 03:20:57,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 03:20:57,674 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-01-25 03:20:57,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:20:57,676 INFO L225 Difference]: With dead ends: 245 [2018-01-25 03:20:57,676 INFO L226 Difference]: Without dead ends: 239 [2018-01-25 03:20:57,677 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 03:20:57,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2018-01-25 03:20:57,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 169. [2018-01-25 03:20:57,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-01-25 03:20:57,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 195 transitions. [2018-01-25 03:20:57,687 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 195 transitions. Word has length 14 [2018-01-25 03:20:57,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:20:57,687 INFO L432 AbstractCegarLoop]: Abstraction has 169 states and 195 transitions. [2018-01-25 03:20:57,687 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 03:20:57,688 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 195 transitions. [2018-01-25 03:20:57,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-01-25 03:20:57,688 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:20:57,688 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:20:57,689 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 03:20:57,690 INFO L82 PathProgramCache]: Analyzing trace with hash 437426513, now seen corresponding path program 1 times [2018-01-25 03:20:57,690 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:20:57,691 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:20:57,691 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:20:57,691 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:20:57,691 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:20:57,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:20:57,705 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:20:57,762 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 03:20:57,762 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:20:57,762 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 03:20:57,762 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:20:57,762 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 03:20:57,763 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 03:20:57,763 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 03:20:57,763 INFO L87 Difference]: Start difference. First operand 169 states and 195 transitions. Second operand 4 states. [2018-01-25 03:20:57,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:20:57,907 INFO L93 Difference]: Finished difference Result 169 states and 195 transitions. [2018-01-25 03:20:57,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-25 03:20:57,908 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-01-25 03:20:57,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:20:57,909 INFO L225 Difference]: With dead ends: 169 [2018-01-25 03:20:57,909 INFO L226 Difference]: Without dead ends: 165 [2018-01-25 03:20:57,910 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 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 03:20:57,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2018-01-25 03:20:57,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2018-01-25 03:20:57,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-01-25 03:20:57,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 187 transitions. [2018-01-25 03:20:57,920 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 187 transitions. Word has length 14 [2018-01-25 03:20:57,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:20:57,921 INFO L432 AbstractCegarLoop]: Abstraction has 165 states and 187 transitions. [2018-01-25 03:20:57,921 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 03:20:57,921 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 187 transitions. [2018-01-25 03:20:57,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-01-25 03:20:57,922 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:20:57,922 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 03:20:57,922 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 03:20:57,922 INFO L82 PathProgramCache]: Analyzing trace with hash 809095649, now seen corresponding path program 1 times [2018-01-25 03:20:57,923 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:20:57,924 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:20:57,924 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:20:57,924 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:20:57,924 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:20:57,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:20:57,938 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:20:57,978 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 03:20:57,978 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:20:57,978 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-25 03:20:57,979 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:20:57,979 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 03:20:57,979 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 03:20:57,979 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-25 03:20:57,980 INFO L87 Difference]: Start difference. First operand 165 states and 187 transitions. Second operand 5 states. [2018-01-25 03:20:58,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:20:58,029 INFO L93 Difference]: Finished difference Result 451 states and 510 transitions. [2018-01-25 03:20:58,032 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 03:20:58,032 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2018-01-25 03:20:58,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:20:58,034 INFO L225 Difference]: With dead ends: 451 [2018-01-25 03:20:58,035 INFO L226 Difference]: Without dead ends: 306 [2018-01-25 03:20:58,036 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-01-25 03:20:58,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2018-01-25 03:20:58,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 165. [2018-01-25 03:20:58,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-01-25 03:20:58,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 185 transitions. [2018-01-25 03:20:58,046 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 185 transitions. Word has length 21 [2018-01-25 03:20:58,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:20:58,046 INFO L432 AbstractCegarLoop]: Abstraction has 165 states and 185 transitions. [2018-01-25 03:20:58,047 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 03:20:58,047 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 185 transitions. [2018-01-25 03:20:58,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-25 03:20:58,047 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:20:58,048 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:20:58,048 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 03:20:58,048 INFO L82 PathProgramCache]: Analyzing trace with hash -836569732, now seen corresponding path program 1 times [2018-01-25 03:20:58,048 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:20:58,049 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:20:58,049 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:20:58,050 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:20:58,050 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:20:58,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:20:58,065 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:20:58,097 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 03:20:58,098 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:20:58,098 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 03:20:58,098 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:20:58,098 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 03:20:58,099 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 03:20:58,099 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 03:20:58,099 INFO L87 Difference]: Start difference. First operand 165 states and 185 transitions. Second operand 4 states. [2018-01-25 03:20:58,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:20:58,268 INFO L93 Difference]: Finished difference Result 203 states and 224 transitions. [2018-01-25 03:20:58,268 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 03:20:58,269 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2018-01-25 03:20:58,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:20:58,270 INFO L225 Difference]: With dead ends: 203 [2018-01-25 03:20:58,270 INFO L226 Difference]: Without dead ends: 199 [2018-01-25 03:20:58,271 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 03:20:58,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2018-01-25 03:20:58,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 161. [2018-01-25 03:20:58,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-01-25 03:20:58,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 181 transitions. [2018-01-25 03:20:58,280 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 181 transitions. Word has length 22 [2018-01-25 03:20:58,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:20:58,281 INFO L432 AbstractCegarLoop]: Abstraction has 161 states and 181 transitions. [2018-01-25 03:20:58,281 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 03:20:58,281 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 181 transitions. [2018-01-25 03:20:58,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-25 03:20:58,282 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:20:58,282 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:20:58,282 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 03:20:58,282 INFO L82 PathProgramCache]: Analyzing trace with hash -836569731, now seen corresponding path program 1 times [2018-01-25 03:20:58,282 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:20:58,283 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:20:58,284 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:20:58,284 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:20:58,284 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:20:58,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:20:58,301 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:20:58,359 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 03:20:58,359 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:20:58,359 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 03:20:58,359 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:20:58,360 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 03:20:58,360 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 03:20:58,360 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 03:20:58,360 INFO L87 Difference]: Start difference. First operand 161 states and 181 transitions. Second operand 4 states. [2018-01-25 03:20:58,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:20:58,492 INFO L93 Difference]: Finished difference Result 161 states and 181 transitions. [2018-01-25 03:20:58,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-25 03:20:58,492 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2018-01-25 03:20:58,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:20:58,493 INFO L225 Difference]: With dead ends: 161 [2018-01-25 03:20:58,493 INFO L226 Difference]: Without dead ends: 158 [2018-01-25 03:20:58,494 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 03:20:58,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2018-01-25 03:20:58,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2018-01-25 03:20:58,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2018-01-25 03:20:58,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 178 transitions. [2018-01-25 03:20:58,502 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 178 transitions. Word has length 22 [2018-01-25 03:20:58,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:20:58,502 INFO L432 AbstractCegarLoop]: Abstraction has 158 states and 178 transitions. [2018-01-25 03:20:58,502 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 03:20:58,502 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 178 transitions. [2018-01-25 03:20:58,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-01-25 03:20:58,503 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:20:58,503 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:20:58,503 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 03:20:58,503 INFO L82 PathProgramCache]: Analyzing trace with hash 261861212, now seen corresponding path program 1 times [2018-01-25 03:20:58,503 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:20:58,504 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:20:58,504 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:20:58,504 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:20:58,504 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:20:58,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:20:58,523 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:20:58,578 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:20:58,578 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:20:58,579 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-25 03:20:58,579 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:20:58,579 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 03:20:58,579 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 03:20:58,580 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 03:20:58,580 INFO L87 Difference]: Start difference. First operand 158 states and 178 transitions. Second operand 5 states. [2018-01-25 03:20:58,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:20:58,732 INFO L93 Difference]: Finished difference Result 397 states and 446 transitions. [2018-01-25 03:20:58,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 03:20:58,733 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2018-01-25 03:20:58,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:20:58,734 INFO L225 Difference]: With dead ends: 397 [2018-01-25 03:20:58,735 INFO L226 Difference]: Without dead ends: 262 [2018-01-25 03:20:58,736 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 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 03:20:58,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2018-01-25 03:20:58,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 158. [2018-01-25 03:20:58,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2018-01-25 03:20:58,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 176 transitions. [2018-01-25 03:20:58,745 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 176 transitions. Word has length 31 [2018-01-25 03:20:58,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:20:58,745 INFO L432 AbstractCegarLoop]: Abstraction has 158 states and 176 transitions. [2018-01-25 03:20:58,745 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 03:20:58,746 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 176 transitions. [2018-01-25 03:20:58,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-01-25 03:20:58,747 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:20:58,747 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:20:58,747 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 03:20:58,747 INFO L82 PathProgramCache]: Analyzing trace with hash -472240768, now seen corresponding path program 1 times [2018-01-25 03:20:58,747 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:20:58,748 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:20:58,748 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:20:58,749 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:20:58,749 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:20:58,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:20:58,766 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:20:58,864 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:20:58,864 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:20:58,864 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 03:20:58,864 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:20:58,865 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 03:20:58,865 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 03:20:58,865 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 03:20:58,865 INFO L87 Difference]: Start difference. First operand 158 states and 176 transitions. Second operand 5 states. [2018-01-25 03:20:59,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:20:59,165 INFO L93 Difference]: Finished difference Result 263 states and 292 transitions. [2018-01-25 03:20:59,166 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 03:20:59,166 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2018-01-25 03:20:59,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:20:59,168 INFO L225 Difference]: With dead ends: 263 [2018-01-25 03:20:59,168 INFO L226 Difference]: Without dead ends: 253 [2018-01-25 03:20:59,168 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 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 03:20:59,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2018-01-25 03:20:59,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 200. [2018-01-25 03:20:59,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2018-01-25 03:20:59,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 257 transitions. [2018-01-25 03:20:59,180 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 257 transitions. Word has length 32 [2018-01-25 03:20:59,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:20:59,180 INFO L432 AbstractCegarLoop]: Abstraction has 200 states and 257 transitions. [2018-01-25 03:20:59,180 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 03:20:59,181 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 257 transitions. [2018-01-25 03:20:59,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-01-25 03:20:59,181 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:20:59,182 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:20:59,182 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 03:20:59,182 INFO L82 PathProgramCache]: Analyzing trace with hash -472240769, now seen corresponding path program 1 times [2018-01-25 03:20:59,182 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:20:59,183 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:20:59,183 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:20:59,183 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:20:59,184 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:20:59,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:20:59,198 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:20:59,242 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:20:59,243 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:20:59,243 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 03:20:59,243 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:20:59,243 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 03:20:59,244 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 03:20:59,244 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-25 03:20:59,244 INFO L87 Difference]: Start difference. First operand 200 states and 257 transitions. Second operand 5 states. [2018-01-25 03:20:59,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:20:59,380 INFO L93 Difference]: Finished difference Result 203 states and 259 transitions. [2018-01-25 03:20:59,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 03:20:59,381 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2018-01-25 03:20:59,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:20:59,382 INFO L225 Difference]: With dead ends: 203 [2018-01-25 03:20:59,382 INFO L226 Difference]: Without dead ends: 194 [2018-01-25 03:20:59,382 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-01-25 03:20:59,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2018-01-25 03:20:59,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 192. [2018-01-25 03:20:59,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2018-01-25 03:20:59,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 242 transitions. [2018-01-25 03:20:59,392 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 242 transitions. Word has length 32 [2018-01-25 03:20:59,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:20:59,392 INFO L432 AbstractCegarLoop]: Abstraction has 192 states and 242 transitions. [2018-01-25 03:20:59,392 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 03:20:59,393 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 242 transitions. [2018-01-25 03:20:59,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-01-25 03:20:59,394 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:20:59,394 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:20:59,394 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 03:20:59,394 INFO L82 PathProgramCache]: Analyzing trace with hash 456903790, now seen corresponding path program 1 times [2018-01-25 03:20:59,395 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:20:59,395 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:20:59,396 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:20:59,396 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:20:59,396 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:20:59,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:20:59,414 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:20:59,446 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:20:59,446 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:20:59,446 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 03:20:59,446 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:20:59,447 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 03:20:59,447 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 03:20:59,447 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-25 03:20:59,447 INFO L87 Difference]: Start difference. First operand 192 states and 242 transitions. Second operand 4 states. [2018-01-25 03:20:59,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:20:59,492 INFO L93 Difference]: Finished difference Result 529 states and 673 transitions. [2018-01-25 03:20:59,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-25 03:20:59,492 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2018-01-25 03:20:59,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:20:59,494 INFO L225 Difference]: With dead ends: 529 [2018-01-25 03:20:59,495 INFO L226 Difference]: Without dead ends: 353 [2018-01-25 03:20:59,495 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-25 03:20:59,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2018-01-25 03:20:59,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 193. [2018-01-25 03:20:59,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-01-25 03:20:59,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 241 transitions. [2018-01-25 03:20:59,508 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 241 transitions. Word has length 37 [2018-01-25 03:20:59,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:20:59,508 INFO L432 AbstractCegarLoop]: Abstraction has 193 states and 241 transitions. [2018-01-25 03:20:59,508 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 03:20:59,508 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 241 transitions. [2018-01-25 03:20:59,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-01-25 03:20:59,510 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:20:59,510 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:20:59,510 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 03:20:59,510 INFO L82 PathProgramCache]: Analyzing trace with hash -1168751179, now seen corresponding path program 1 times [2018-01-25 03:20:59,510 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:20:59,511 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:20:59,511 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:20:59,511 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:20:59,511 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:20:59,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:20:59,533 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:20:59,683 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:20:59,683 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:20:59,683 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-25 03:20:59,683 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:20:59,684 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-25 03:20:59,684 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-25 03:20:59,684 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-01-25 03:20:59,684 INFO L87 Difference]: Start difference. First operand 193 states and 241 transitions. Second operand 6 states. [2018-01-25 03:20:59,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:20:59,856 INFO L93 Difference]: Finished difference Result 369 states and 464 transitions. [2018-01-25 03:20:59,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 03:20:59,856 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39 [2018-01-25 03:20:59,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:20:59,858 INFO L225 Difference]: With dead ends: 369 [2018-01-25 03:20:59,858 INFO L226 Difference]: Without dead ends: 232 [2018-01-25 03:20:59,859 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-01-25 03:20:59,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2018-01-25 03:20:59,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 203. [2018-01-25 03:20:59,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-01-25 03:20:59,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 253 transitions. [2018-01-25 03:20:59,871 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 253 transitions. Word has length 39 [2018-01-25 03:20:59,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:20:59,872 INFO L432 AbstractCegarLoop]: Abstraction has 203 states and 253 transitions. [2018-01-25 03:20:59,872 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-25 03:20:59,872 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 253 transitions. [2018-01-25 03:20:59,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-01-25 03:20:59,873 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:20:59,874 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:20:59,874 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 03:20:59,875 INFO L82 PathProgramCache]: Analyzing trace with hash -1118408649, now seen corresponding path program 1 times [2018-01-25 03:20:59,875 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:20:59,876 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:20:59,876 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:20:59,876 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:20:59,876 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:20:59,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:20:59,898 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:21:00,296 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:21:00,296 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:21:00,297 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-01-25 03:21:00,297 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:21:00,297 INFO L409 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-01-25 03:21:00,297 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-01-25 03:21:00,297 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-01-25 03:21:00,298 INFO L87 Difference]: Start difference. First operand 203 states and 253 transitions. Second operand 11 states. [2018-01-25 03:21:01,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:21:01,076 INFO L93 Difference]: Finished difference Result 289 states and 345 transitions. [2018-01-25 03:21:01,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-01-25 03:21:01,076 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 41 [2018-01-25 03:21:01,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:21:01,077 INFO L225 Difference]: With dead ends: 289 [2018-01-25 03:21:01,078 INFO L226 Difference]: Without dead ends: 288 [2018-01-25 03:21:01,078 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2018-01-25 03:21:01,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2018-01-25 03:21:01,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 209. [2018-01-25 03:21:01,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2018-01-25 03:21:01,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 261 transitions. [2018-01-25 03:21:01,092 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 261 transitions. Word has length 41 [2018-01-25 03:21:01,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:21:01,092 INFO L432 AbstractCegarLoop]: Abstraction has 209 states and 261 transitions. [2018-01-25 03:21:01,093 INFO L433 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-01-25 03:21:01,093 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 261 transitions. [2018-01-25 03:21:01,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-01-25 03:21:01,094 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:21:01,094 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:21:01,094 INFO L371 AbstractCegarLoop]: === Iteration 15 === [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 03:21:01,094 INFO L82 PathProgramCache]: Analyzing trace with hash -1118408648, now seen corresponding path program 1 times [2018-01-25 03:21:01,094 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:21:01,095 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:21:01,095 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:21:01,096 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:21:01,096 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:21:01,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:21:01,116 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:21:01,538 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:21:01,539 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:21:01,539 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-01-25 03:21:01,539 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:21:01,539 INFO L409 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-01-25 03:21:01,539 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-01-25 03:21:01,540 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2018-01-25 03:21:01,540 INFO L87 Difference]: Start difference. First operand 209 states and 261 transitions. Second operand 12 states. [2018-01-25 03:21:02,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:21:02,422 INFO L93 Difference]: Finished difference Result 259 states and 313 transitions. [2018-01-25 03:21:02,422 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-01-25 03:21:02,423 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 41 [2018-01-25 03:21:02,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:21:02,424 INFO L225 Difference]: With dead ends: 259 [2018-01-25 03:21:02,424 INFO L226 Difference]: Without dead ends: 258 [2018-01-25 03:21:02,425 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=179, Invalid=471, Unknown=0, NotChecked=0, Total=650 [2018-01-25 03:21:02,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2018-01-25 03:21:02,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 209. [2018-01-25 03:21:02,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2018-01-25 03:21:02,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 260 transitions. [2018-01-25 03:21:02,440 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 260 transitions. Word has length 41 [2018-01-25 03:21:02,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:21:02,441 INFO L432 AbstractCegarLoop]: Abstraction has 209 states and 260 transitions. [2018-01-25 03:21:02,441 INFO L433 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-01-25 03:21:02,441 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 260 transitions. [2018-01-25 03:21:02,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-01-25 03:21:02,442 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:21:02,442 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:21:02,442 INFO L371 AbstractCegarLoop]: === Iteration 16 === [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 03:21:02,442 INFO L82 PathProgramCache]: Analyzing trace with hash -310930527, now seen corresponding path program 1 times [2018-01-25 03:21:02,442 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:21:02,443 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:21:02,443 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:21:02,444 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:21:02,444 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:21:02,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:21:02,464 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:21:02,711 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:21:02,712 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:21:02,712 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-01-25 03:21:02,712 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:21:02,712 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-25 03:21:02,713 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-25 03:21:02,713 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-01-25 03:21:02,713 INFO L87 Difference]: Start difference. First operand 209 states and 260 transitions. Second operand 10 states. [2018-01-25 03:21:02,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:21:02,992 INFO L93 Difference]: Finished difference Result 239 states and 291 transitions. [2018-01-25 03:21:02,992 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-25 03:21:02,992 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 42 [2018-01-25 03:21:02,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:21:02,993 INFO L225 Difference]: With dead ends: 239 [2018-01-25 03:21:02,993 INFO L226 Difference]: Without dead ends: 236 [2018-01-25 03:21:02,994 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2018-01-25 03:21:02,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2018-01-25 03:21:03,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 209. [2018-01-25 03:21:03,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2018-01-25 03:21:03,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 259 transitions. [2018-01-25 03:21:03,002 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 259 transitions. Word has length 42 [2018-01-25 03:21:03,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:21:03,002 INFO L432 AbstractCegarLoop]: Abstraction has 209 states and 259 transitions. [2018-01-25 03:21:03,002 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-25 03:21:03,002 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 259 transitions. [2018-01-25 03:21:03,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-01-25 03:21:03,003 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:21:03,003 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:21:03,003 INFO L371 AbstractCegarLoop]: === Iteration 17 === [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 03:21:03,003 INFO L82 PathProgramCache]: Analyzing trace with hash -1048881672, now seen corresponding path program 1 times [2018-01-25 03:21:03,003 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:21:03,004 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:21:03,004 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:21:03,004 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:21:03,004 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:21:03,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:21:03,015 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:21:03,036 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-01-25 03:21:03,036 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:21:03,036 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 03:21:03,037 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:21:03,037 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 03:21:03,037 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 03:21:03,037 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 03:21:03,037 INFO L87 Difference]: Start difference. First operand 209 states and 259 transitions. Second operand 4 states. [2018-01-25 03:21:03,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:21:03,446 INFO L93 Difference]: Finished difference Result 270 states and 334 transitions. [2018-01-25 03:21:03,446 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 03:21:03,446 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2018-01-25 03:21:03,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:21:03,448 INFO L225 Difference]: With dead ends: 270 [2018-01-25 03:21:03,448 INFO L226 Difference]: Without dead ends: 265 [2018-01-25 03:21:03,448 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 03:21:03,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2018-01-25 03:21:03,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 213. [2018-01-25 03:21:03,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2018-01-25 03:21:03,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 270 transitions. [2018-01-25 03:21:03,456 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 270 transitions. Word has length 43 [2018-01-25 03:21:03,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:21:03,457 INFO L432 AbstractCegarLoop]: Abstraction has 213 states and 270 transitions. [2018-01-25 03:21:03,457 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 03:21:03,457 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 270 transitions. [2018-01-25 03:21:03,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-01-25 03:21:03,458 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:21:03,458 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:21:03,458 INFO L371 AbstractCegarLoop]: === Iteration 18 === [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 03:21:03,458 INFO L82 PathProgramCache]: Analyzing trace with hash -1048881671, now seen corresponding path program 1 times [2018-01-25 03:21:03,458 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:21:03,459 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:21:03,459 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:21:03,459 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:21:03,459 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:21:03,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:21:03,475 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:21:04,002 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:21:04,002 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:21:04,002 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-01-25 03:21:04,002 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:21:04,003 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-01-25 03:21:04,003 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-01-25 03:21:04,003 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2018-01-25 03:21:04,003 INFO L87 Difference]: Start difference. First operand 213 states and 270 transitions. Second operand 13 states. [2018-01-25 03:21:04,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:21:04,935 INFO L93 Difference]: Finished difference Result 271 states and 334 transitions. [2018-01-25 03:21:04,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-01-25 03:21:04,935 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 43 [2018-01-25 03:21:04,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:21:04,936 INFO L225 Difference]: With dead ends: 271 [2018-01-25 03:21:04,936 INFO L226 Difference]: Without dead ends: 269 [2018-01-25 03:21:04,937 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=179, Invalid=633, Unknown=0, NotChecked=0, Total=812 [2018-01-25 03:21:04,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2018-01-25 03:21:04,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 218. [2018-01-25 03:21:04,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2018-01-25 03:21:04,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 276 transitions. [2018-01-25 03:21:04,948 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 276 transitions. Word has length 43 [2018-01-25 03:21:04,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:21:04,948 INFO L432 AbstractCegarLoop]: Abstraction has 218 states and 276 transitions. [2018-01-25 03:21:04,949 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-01-25 03:21:04,949 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 276 transitions. [2018-01-25 03:21:04,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-01-25 03:21:04,949 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:21:04,949 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:21:04,949 INFO L371 AbstractCegarLoop]: === Iteration 19 === [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 03:21:04,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1204415842, now seen corresponding path program 1 times [2018-01-25 03:21:04,950 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:21:04,950 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:21:04,951 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:21:04,951 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:21:04,951 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:21:04,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:21:04,964 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:21:04,990 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-01-25 03:21:04,990 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:21:04,990 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 03:21:04,990 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:21:04,991 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-25 03:21:04,991 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-25 03:21:04,991 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-25 03:21:04,991 INFO L87 Difference]: Start difference. First operand 218 states and 276 transitions. Second operand 3 states. [2018-01-25 03:21:05,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:21:05,007 INFO L93 Difference]: Finished difference Result 238 states and 299 transitions. [2018-01-25 03:21:05,008 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-25 03:21:05,008 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2018-01-25 03:21:05,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:21:05,009 INFO L225 Difference]: With dead ends: 238 [2018-01-25 03:21:05,009 INFO L226 Difference]: Without dead ends: 219 [2018-01-25 03:21:05,010 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-25 03:21:05,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-01-25 03:21:05,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2018-01-25 03:21:05,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-01-25 03:21:05,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 277 transitions. [2018-01-25 03:21:05,032 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 277 transitions. Word has length 47 [2018-01-25 03:21:05,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:21:05,032 INFO L432 AbstractCegarLoop]: Abstraction has 219 states and 277 transitions. [2018-01-25 03:21:05,032 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-25 03:21:05,032 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 277 transitions. [2018-01-25 03:21:05,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-01-25 03:21:05,033 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:21:05,033 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:21:05,033 INFO L371 AbstractCegarLoop]: === Iteration 20 === [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 03:21:05,034 INFO L82 PathProgramCache]: Analyzing trace with hash 2091612127, now seen corresponding path program 1 times [2018-01-25 03:21:05,034 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:21:05,035 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:21:05,035 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:21:05,035 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:21:05,035 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:21:05,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:21:05,054 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:21:05,281 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:21:05,282 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:21:05,282 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-01-25 03:21:05,282 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:21:05,282 INFO L409 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-01-25 03:21:05,283 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-01-25 03:21:05,283 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2018-01-25 03:21:05,283 INFO L87 Difference]: Start difference. First operand 219 states and 277 transitions. Second operand 12 states. [2018-01-25 03:21:05,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:21:05,758 INFO L93 Difference]: Finished difference Result 290 states and 355 transitions. [2018-01-25 03:21:05,759 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-01-25 03:21:05,759 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 49 [2018-01-25 03:21:05,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:21:05,760 INFO L225 Difference]: With dead ends: 290 [2018-01-25 03:21:05,760 INFO L226 Difference]: Without dead ends: 289 [2018-01-25 03:21:05,761 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=182, Invalid=520, Unknown=0, NotChecked=0, Total=702 [2018-01-25 03:21:05,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2018-01-25 03:21:05,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 222. [2018-01-25 03:21:05,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2018-01-25 03:21:05,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 281 transitions. [2018-01-25 03:21:05,774 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 281 transitions. Word has length 49 [2018-01-25 03:21:05,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:21:05,774 INFO L432 AbstractCegarLoop]: Abstraction has 222 states and 281 transitions. [2018-01-25 03:21:05,774 INFO L433 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-01-25 03:21:05,775 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 281 transitions. [2018-01-25 03:21:05,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-01-25 03:21:05,775 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:21:05,775 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:21:05,775 INFO L371 AbstractCegarLoop]: === Iteration 21 === [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 03:21:05,776 INFO L82 PathProgramCache]: Analyzing trace with hash 2097549474, now seen corresponding path program 1 times [2018-01-25 03:21:05,776 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:21:05,777 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:21:05,777 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:21:05,777 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:21:05,777 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:21:05,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:21:05,797 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:21:06,490 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:21:06,491 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-25 03:21:06,491 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-25 03:21:06,492 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 50 with the following transitions: [2018-01-25 03:21:06,493 INFO L201 CegarAbsIntRunner]: [0], [4], [6], [9], [15], [17], [18], [19], [24], [26], [31], [32], [40], [41], [49], [50], [56], [57], [72], [73], [76], [78], [81], [88], [92], [94], [99], [198], [201], [202], [208], [214], [215], [216], [218], [219], [222], [231], [240], [248], [249], [253], [254], [255] [2018-01-25 03:21:06,542 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-25 03:21:06,542 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