java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_precise.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-sorted_true-unreach-call_true-valid-memsafety.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-25 00:21:15,181 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-25 00:21:15,183 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-25 00:21:15,196 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-25 00:21:15,196 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-25 00:21:15,197 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-25 00:21:15,198 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-25 00:21:15,200 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-25 00:21:15,202 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-25 00:21:15,203 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-25 00:21:15,204 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-25 00:21:15,204 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-25 00:21:15,205 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-25 00:21:15,206 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-25 00:21:15,207 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-25 00:21:15,210 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-25 00:21:15,213 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-25 00:21:15,215 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-25 00:21:15,216 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-25 00:21:15,218 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-25 00:21:15,220 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-25 00:21:15,221 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-25 00:21:15,221 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-25 00:21:15,222 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-25 00:21:15,223 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-25 00:21:15,225 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-25 00:21:15,225 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-25 00:21:15,226 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-25 00:21:15,226 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-25 00:21:15,226 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-25 00:21:15,227 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-25 00:21:15,227 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_precise.epf [2018-01-25 00:21:15,238 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-25 00:21:15,239 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-25 00:21:15,239 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-25 00:21:15,240 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-25 00:21:15,240 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-25 00:21:15,240 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-25 00:21:15,240 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-25 00:21:15,240 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-25 00:21:15,241 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-25 00:21:15,242 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-25 00:21:15,242 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-25 00:21:15,242 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-25 00:21:15,242 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-25 00:21:15,242 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-25 00:21:15,243 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-25 00:21:15,243 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-25 00:21:15,243 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-25 00:21:15,243 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-25 00:21:15,243 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-25 00:21:15,244 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-25 00:21:15,244 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-25 00:21:15,244 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-25 00:21:15,244 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-25 00:21:15,244 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-25 00:21:15,244 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-25 00:21:15,245 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-25 00:21:15,245 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-25 00:21:15,245 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-25 00:21:15,245 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-25 00:21:15,245 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-25 00:21:15,245 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-25 00:21:15,246 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-25 00:21:15,246 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-25 00:21:15,246 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-25 00:21:15,247 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-25 00:21:15,247 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-25 00:21:15,282 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-25 00:21:15,297 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-25 00:21:15,302 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-25 00:21:15,304 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-25 00:21:15,304 INFO L276 PluginConnector]: CDTParser initialized [2018-01-25 00:21:15,305 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-sorted_true-unreach-call_true-valid-memsafety.i [2018-01-25 00:21:15,510 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-25 00:21:15,515 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-25 00:21:15,516 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-25 00:21:15,516 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-25 00:21:15,522 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-25 00:21:15,523 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 12:21:15" (1/1) ... [2018-01-25 00:21:15,526 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28805b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:21:15, skipping insertion in model container [2018-01-25 00:21:15,527 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 12:21:15" (1/1) ... [2018-01-25 00:21:15,541 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 00:21:15,585 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 00:21:15,720 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 00:21:15,752 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 00:21:15,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:21:15 WrapperNode [2018-01-25 00:21:15,764 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-25 00:21:15,765 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-25 00:21:15,765 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-25 00:21:15,765 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-25 00:21:15,777 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:21:15" (1/1) ... [2018-01-25 00:21:15,777 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:21:15" (1/1) ... [2018-01-25 00:21:15,789 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:21:15" (1/1) ... [2018-01-25 00:21:15,790 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:21:15" (1/1) ... [2018-01-25 00:21:15,800 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:21:15" (1/1) ... [2018-01-25 00:21:15,806 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:21:15" (1/1) ... [2018-01-25 00:21:15,809 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:21:15" (1/1) ... [2018-01-25 00:21:15,812 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-25 00:21:15,813 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-25 00:21:15,813 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-25 00:21:15,813 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-25 00:21:15,815 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:21:15" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-25 00:21:15,866 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-25 00:21:15,867 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-25 00:21:15,867 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-25 00:21:15,867 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-25 00:21:15,867 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-25 00:21:15,867 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-25 00:21:15,868 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-25 00:21:15,868 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-25 00:21:15,868 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-25 00:21:15,868 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-25 00:21:15,868 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-25 00:21:15,868 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-25 00:21:15,869 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-25 00:21:15,869 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-25 00:21:15,869 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-25 00:21:15,869 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-25 00:21:15,869 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-25 00:21:16,508 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-25 00:21:16,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 12:21:16 BoogieIcfgContainer [2018-01-25 00:21:16,509 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-25 00:21:16,510 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-25 00:21:16,511 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-25 00:21:16,513 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-25 00:21:16,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.01 12:21:15" (1/3) ... [2018-01-25 00:21:16,514 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@414bfdca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 12:21:16, skipping insertion in model container [2018-01-25 00:21:16,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:21:15" (2/3) ... [2018-01-25 00:21:16,515 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@414bfdca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 12:21:16, skipping insertion in model container [2018-01-25 00:21:16,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 12:21:16" (3/3) ... [2018-01-25 00:21:16,517 INFO L105 eAbstractionObserver]: Analyzing ICFG dll-sorted_true-unreach-call_true-valid-memsafety.i [2018-01-25 00:21:16,526 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-25 00:21:16,535 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 73 error locations. [2018-01-25 00:21:16,583 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-25 00:21:16,583 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-25 00:21:16,583 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-25 00:21:16,584 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-25 00:21:16,584 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-25 00:21:16,584 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-25 00:21:16,584 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-25 00:21:16,584 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-25 00:21:16,585 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-25 00:21:16,612 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states. [2018-01-25 00:21:16,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-25 00:21:16,616 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:21:16,617 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:21:16,617 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr72EnsuresViolation, 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, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:21:16,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1253687945, now seen corresponding path program 1 times [2018-01-25 00:21:16,623 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:21:16,663 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:21:16,663 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:21:16,663 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:21:16,663 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:21:16,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:21:16,709 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:21:16,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:21:16,785 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:21:16,786 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 00:21:16,786 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:21:16,790 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 00:21:16,885 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 00:21:16,886 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 00:21:16,888 INFO L87 Difference]: Start difference. First operand 183 states. Second operand 4 states. [2018-01-25 00:21:17,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:21:17,112 INFO L93 Difference]: Finished difference Result 332 states and 400 transitions. [2018-01-25 00:21:17,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-25 00:21:17,114 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-25 00:21:17,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:21:17,127 INFO L225 Difference]: With dead ends: 332 [2018-01-25 00:21:17,128 INFO L226 Difference]: Without dead ends: 189 [2018-01-25 00:21:17,132 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-25 00:21:17,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2018-01-25 00:21:17,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 177. [2018-01-25 00:21:17,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2018-01-25 00:21:17,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 188 transitions. [2018-01-25 00:21:17,184 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 188 transitions. Word has length 8 [2018-01-25 00:21:17,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:21:17,185 INFO L432 AbstractCegarLoop]: Abstraction has 177 states and 188 transitions. [2018-01-25 00:21:17,185 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 00:21:17,185 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 188 transitions. [2018-01-25 00:21:17,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-25 00:21:17,185 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:21:17,186 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:21:17,186 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr72EnsuresViolation, 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, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:21:17,186 INFO L82 PathProgramCache]: Analyzing trace with hash -1253687944, now seen corresponding path program 1 times [2018-01-25 00:21:17,186 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:21:17,187 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:21:17,188 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:21:17,188 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:21:17,188 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:21:17,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:21:17,203 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:21:17,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:21:17,284 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:21:17,285 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 00:21:17,285 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:21:17,286 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 00:21:17,287 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 00:21:17,287 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 00:21:17,287 INFO L87 Difference]: Start difference. First operand 177 states and 188 transitions. Second operand 4 states. [2018-01-25 00:21:17,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:21:17,579 INFO L93 Difference]: Finished difference Result 182 states and 193 transitions. [2018-01-25 00:21:17,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-25 00:21:17,580 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-25 00:21:17,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:21:17,582 INFO L225 Difference]: With dead ends: 182 [2018-01-25 00:21:17,582 INFO L226 Difference]: Without dead ends: 179 [2018-01-25 00:21:17,583 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-25 00:21:17,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-01-25 00:21:17,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 174. [2018-01-25 00:21:17,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2018-01-25 00:21:17,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 185 transitions. [2018-01-25 00:21:17,595 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 185 transitions. Word has length 8 [2018-01-25 00:21:17,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:21:17,596 INFO L432 AbstractCegarLoop]: Abstraction has 174 states and 185 transitions. [2018-01-25 00:21:17,596 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 00:21:17,596 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 185 transitions. [2018-01-25 00:21:17,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-01-25 00:21:17,596 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:21:17,596 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:21:17,596 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr72EnsuresViolation, 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, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:21:17,597 INFO L82 PathProgramCache]: Analyzing trace with hash 2004672772, now seen corresponding path program 1 times [2018-01-25 00:21:17,597 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:21:17,598 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:21:17,598 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:21:17,598 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:21:17,598 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:21:17,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:21:17,624 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:21:17,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:21:17,680 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:21:17,680 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 00:21:17,681 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:21:17,681 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 00:21:17,681 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 00:21:17,681 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 00:21:17,682 INFO L87 Difference]: Start difference. First operand 174 states and 185 transitions. Second operand 4 states. [2018-01-25 00:21:17,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:21:17,858 INFO L93 Difference]: Finished difference Result 206 states and 220 transitions. [2018-01-25 00:21:17,859 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 00:21:17,859 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2018-01-25 00:21:17,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:21:17,860 INFO L225 Difference]: With dead ends: 206 [2018-01-25 00:21:17,860 INFO L226 Difference]: Without dead ends: 182 [2018-01-25 00:21:17,861 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-25 00:21:17,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2018-01-25 00:21:17,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 172. [2018-01-25 00:21:17,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2018-01-25 00:21:17,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 193 transitions. [2018-01-25 00:21:17,875 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 193 transitions. Word has length 16 [2018-01-25 00:21:17,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:21:17,875 INFO L432 AbstractCegarLoop]: Abstraction has 172 states and 193 transitions. [2018-01-25 00:21:17,875 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 00:21:17,876 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 193 transitions. [2018-01-25 00:21:17,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-01-25 00:21:17,876 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:21:17,877 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:21:17,877 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr72EnsuresViolation, 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, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:21:17,877 INFO L82 PathProgramCache]: Analyzing trace with hash 2004672773, now seen corresponding path program 1 times [2018-01-25 00:21:17,878 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:21:17,879 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:21:17,879 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:21:17,879 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:21:17,879 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:21:17,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:21:17,896 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:21:17,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:21:17,989 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:21:17,989 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-25 00:21:17,989 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:21:17,989 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-25 00:21:17,990 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-25 00:21:17,990 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-01-25 00:21:17,990 INFO L87 Difference]: Start difference. First operand 172 states and 193 transitions. Second operand 7 states. [2018-01-25 00:21:18,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:21:18,546 INFO L93 Difference]: Finished difference Result 285 states and 309 transitions. [2018-01-25 00:21:18,546 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 00:21:18,546 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2018-01-25 00:21:18,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:21:18,548 INFO L225 Difference]: With dead ends: 285 [2018-01-25 00:21:18,548 INFO L226 Difference]: Without dead ends: 263 [2018-01-25 00:21:18,549 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-01-25 00:21:18,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2018-01-25 00:21:18,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 233. [2018-01-25 00:21:18,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2018-01-25 00:21:18,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 272 transitions. [2018-01-25 00:21:18,566 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 272 transitions. Word has length 16 [2018-01-25 00:21:18,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:21:18,566 INFO L432 AbstractCegarLoop]: Abstraction has 233 states and 272 transitions. [2018-01-25 00:21:18,566 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-25 00:21:18,566 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 272 transitions. [2018-01-25 00:21:18,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-25 00:21:18,567 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:21:18,567 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:21:18,567 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr72EnsuresViolation, 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, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:21:18,568 INFO L82 PathProgramCache]: Analyzing trace with hash -1949782104, now seen corresponding path program 1 times [2018-01-25 00:21:18,568 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:21:18,569 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:21:18,569 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:21:18,569 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:21:18,569 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:21:18,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:21:18,586 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:21:18,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:21:18,665 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:21:18,665 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 00:21:18,665 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:21:18,665 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 00:21:18,666 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 00:21:18,666 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 00:21:18,666 INFO L87 Difference]: Start difference. First operand 233 states and 272 transitions. Second operand 5 states. [2018-01-25 00:21:18,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:21:18,942 INFO L93 Difference]: Finished difference Result 421 states and 493 transitions. [2018-01-25 00:21:18,943 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 00:21:18,943 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2018-01-25 00:21:18,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:21:18,947 INFO L225 Difference]: With dead ends: 421 [2018-01-25 00:21:18,947 INFO L226 Difference]: Without dead ends: 420 [2018-01-25 00:21:18,947 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-25 00:21:18,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2018-01-25 00:21:18,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 232. [2018-01-25 00:21:18,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2018-01-25 00:21:18,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 270 transitions. [2018-01-25 00:21:18,962 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 270 transitions. Word has length 18 [2018-01-25 00:21:18,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:21:18,962 INFO L432 AbstractCegarLoop]: Abstraction has 232 states and 270 transitions. [2018-01-25 00:21:18,962 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 00:21:18,963 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 270 transitions. [2018-01-25 00:21:18,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-25 00:21:18,963 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:21:18,963 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:21:18,963 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr72EnsuresViolation, 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, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:21:18,964 INFO L82 PathProgramCache]: Analyzing trace with hash -1949782105, now seen corresponding path program 1 times [2018-01-25 00:21:18,964 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:21:18,964 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:21:18,965 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:21:18,965 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:21:18,965 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:21:18,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:21:18,978 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:21:19,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:21:19,010 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:21:19,011 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 00:21:19,011 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:21:19,011 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 00:21:19,011 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 00:21:19,011 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 00:21:19,011 INFO L87 Difference]: Start difference. First operand 232 states and 270 transitions. Second operand 5 states. [2018-01-25 00:21:19,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:21:19,318 INFO L93 Difference]: Finished difference Result 411 states and 481 transitions. [2018-01-25 00:21:19,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 00:21:19,319 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2018-01-25 00:21:19,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:21:19,321 INFO L225 Difference]: With dead ends: 411 [2018-01-25 00:21:19,322 INFO L226 Difference]: Without dead ends: 410 [2018-01-25 00:21:19,322 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-25 00:21:19,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2018-01-25 00:21:19,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 231. [2018-01-25 00:21:19,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2018-01-25 00:21:19,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 268 transitions. [2018-01-25 00:21:19,338 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 268 transitions. Word has length 18 [2018-01-25 00:21:19,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:21:19,339 INFO L432 AbstractCegarLoop]: Abstraction has 231 states and 268 transitions. [2018-01-25 00:21:19,339 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 00:21:19,339 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 268 transitions. [2018-01-25 00:21:19,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-25 00:21:19,340 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:21:19,340 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 00:21:19,340 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr72EnsuresViolation, 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, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:21:19,340 INFO L82 PathProgramCache]: Analyzing trace with hash 319549737, now seen corresponding path program 1 times [2018-01-25 00:21:19,341 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:21:19,341 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:21:19,342 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:21:19,342 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:21:19,342 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:21:19,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:21:19,358 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:21:19,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:21:19,442 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:21:19,443 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-25 00:21:19,443 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:21:19,443 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-25 00:21:19,443 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-25 00:21:19,444 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-01-25 00:21:19,444 INFO L87 Difference]: Start difference. First operand 231 states and 268 transitions. Second operand 9 states. [2018-01-25 00:21:20,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:21:20,076 INFO L93 Difference]: Finished difference Result 237 states and 271 transitions. [2018-01-25 00:21:20,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-25 00:21:20,077 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2018-01-25 00:21:20,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:21:20,078 INFO L225 Difference]: With dead ends: 237 [2018-01-25 00:21:20,078 INFO L226 Difference]: Without dead ends: 236 [2018-01-25 00:21:20,079 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2018-01-25 00:21:20,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2018-01-25 00:21:20,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 230. [2018-01-25 00:21:20,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2018-01-25 00:21:20,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 267 transitions. [2018-01-25 00:21:20,092 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 267 transitions. Word has length 22 [2018-01-25 00:21:20,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:21:20,093 INFO L432 AbstractCegarLoop]: Abstraction has 230 states and 267 transitions. [2018-01-25 00:21:20,094 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-25 00:21:20,094 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 267 transitions. [2018-01-25 00:21:20,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-25 00:21:20,095 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:21:20,095 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 00:21:20,095 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr72EnsuresViolation, 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, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:21:20,095 INFO L82 PathProgramCache]: Analyzing trace with hash 319549738, now seen corresponding path program 1 times [2018-01-25 00:21:20,095 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:21:20,096 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:21:20,096 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:21:20,096 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:21:20,097 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:21:20,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:21:20,119 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:21:20,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:21:20,272 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:21:20,272 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-01-25 00:21:20,272 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:21:20,272 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-25 00:21:20,272 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-25 00:21:20,272 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-01-25 00:21:20,273 INFO L87 Difference]: Start difference. First operand 230 states and 267 transitions. Second operand 10 states. [2018-01-25 00:21:20,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:21:20,906 INFO L93 Difference]: Finished difference Result 238 states and 272 transitions. [2018-01-25 00:21:20,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-25 00:21:20,906 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2018-01-25 00:21:20,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:21:20,908 INFO L225 Difference]: With dead ends: 238 [2018-01-25 00:21:20,908 INFO L226 Difference]: Without dead ends: 232 [2018-01-25 00:21:20,909 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=129, Invalid=291, Unknown=0, NotChecked=0, Total=420 [2018-01-25 00:21:20,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2018-01-25 00:21:20,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 215. [2018-01-25 00:21:20,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2018-01-25 00:21:20,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 251 transitions. [2018-01-25 00:21:20,921 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 251 transitions. Word has length 22 [2018-01-25 00:21:20,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:21:20,922 INFO L432 AbstractCegarLoop]: Abstraction has 215 states and 251 transitions. [2018-01-25 00:21:20,922 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-25 00:21:20,922 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 251 transitions. [2018-01-25 00:21:20,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-25 00:21:20,923 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:21:20,923 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:21:20,923 INFO L371 AbstractCegarLoop]: === Iteration 9 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr72EnsuresViolation, 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, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:21:20,924 INFO L82 PathProgramCache]: Analyzing trace with hash -308912237, now seen corresponding path program 1 times [2018-01-25 00:21:20,924 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:21:20,925 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:21:20,925 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:21:20,925 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:21:20,925 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:21:20,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:21:20,937 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:21:20,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:21:20,965 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:21:20,965 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 00:21:20,965 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:21:20,965 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-25 00:21:20,966 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-25 00:21:20,966 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-25 00:21:20,966 INFO L87 Difference]: Start difference. First operand 215 states and 251 transitions. Second operand 3 states. [2018-01-25 00:21:20,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:21:20,988 INFO L93 Difference]: Finished difference Result 457 states and 534 transitions. [2018-01-25 00:21:20,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-25 00:21:20,988 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2018-01-25 00:21:20,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:21:20,989 INFO L225 Difference]: With dead ends: 457 [2018-01-25 00:21:20,989 INFO L226 Difference]: Without dead ends: 253 [2018-01-25 00:21:20,991 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 00:21:20,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2018-01-25 00:21:20,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 229. [2018-01-25 00:21:20,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2018-01-25 00:21:21,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 266 transitions. [2018-01-25 00:21:21,001 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 266 transitions. Word has length 25 [2018-01-25 00:21:21,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:21:21,001 INFO L432 AbstractCegarLoop]: Abstraction has 229 states and 266 transitions. [2018-01-25 00:21:21,001 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-25 00:21:21,001 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 266 transitions. [2018-01-25 00:21:21,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-01-25 00:21:21,002 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:21:21,003 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:21:21,003 INFO L371 AbstractCegarLoop]: === Iteration 10 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr72EnsuresViolation, 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, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:21:21,003 INFO L82 PathProgramCache]: Analyzing trace with hash -1335704755, now seen corresponding path program 1 times [2018-01-25 00:21:21,003 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:21:21,004 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:21:21,004 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:21:21,004 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:21:21,004 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:21:21,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:21:21,021 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:21:21,273 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:21:21,273 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-25 00:21:21,273 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-25 00:21:21,274 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 41 with the following transitions: [2018-01-25 00:21:21,276 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [11], [15], [17], [20], [22], [23], [24], [27], [30], [33], [34], [37], [38], [41], [44], [50], [51], [63], [67], [72], [76], [82], [86], [88], [91], [94], [95], [99], [357], [358], [362], [363], [364] [2018-01-25 00:21:21,323 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-25 00:21:21,324 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