java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-rb-sentinel_false-unreach-call_false-valid-memtrack.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 20:50:20,240 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 20:50:20,243 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 20:50:20,258 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 20:50:20,258 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 20:50:20,259 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 20:50:20,261 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 20:50:20,262 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 20:50:20,265 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 20:50:20,266 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 20:50:20,266 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 20:50:20,267 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 20:50:20,267 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 20:50:20,268 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 20:50:20,269 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 20:50:20,271 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 20:50:20,274 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 20:50:20,276 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 20:50:20,277 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 20:50:20,278 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 20:50:20,281 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-24 20:50:20,281 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-24 20:50:20,281 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-24 20:50:20,283 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-24 20:50:20,283 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-24 20:50:20,285 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-24 20:50:20,285 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-24 20:50:20,286 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-24 20:50:20,286 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-24 20:50:20,286 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 20:50:20,287 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 20:50:20,287 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf [2018-01-24 20:50:20,297 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 20:50:20,298 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 20:50:20,298 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 20:50:20,299 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 20:50:20,299 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 20:50:20,299 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-24 20:50:20,299 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 20:50:20,299 INFO L133 SettingsManager]: * Precise comparison operator=true [2018-01-24 20:50:20,300 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 20:50:20,300 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 20:50:20,301 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 20:50:20,301 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 20:50:20,301 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 20:50:20,301 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 20:50:20,301 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 20:50:20,301 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 20:50:20,302 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 20:50:20,302 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 20:50:20,302 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 20:50:20,302 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 20:50:20,302 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 20:50:20,303 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 20:50:20,303 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 20:50:20,303 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 20:50:20,303 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 20:50:20,303 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 20:50:20,304 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 20:50:20,304 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 20:50:20,304 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 20:50:20,304 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 20:50:20,304 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-24 20:50:20,305 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 20:50:20,305 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 20:50:20,305 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 20:50:20,305 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-24 20:50:20,306 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 20:50:20,306 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 20:50:20,342 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 20:50:20,354 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 20:50:20,359 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 20:50:20,360 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 20:50:20,361 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 20:50:20,361 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-rb-sentinel_false-unreach-call_false-valid-memtrack.i [2018-01-24 20:50:20,538 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 20:50:20,544 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 20:50:20,544 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 20:50:20,545 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 20:50:20,550 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 20:50:20,551 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 08:50:20" (1/1) ... [2018-01-24 20:50:20,554 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a3ee212 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:50:20, skipping insertion in model container [2018-01-24 20:50:20,554 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 08:50:20" (1/1) ... [2018-01-24 20:50:20,567 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 20:50:20,607 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 20:50:20,736 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 20:50:20,760 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 20:50:20,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:50:20 WrapperNode [2018-01-24 20:50:20,771 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 20:50:20,772 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 20:50:20,772 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 20:50:20,772 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 20:50:20,786 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:50:20" (1/1) ... [2018-01-24 20:50:20,787 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:50:20" (1/1) ... [2018-01-24 20:50:20,797 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:50:20" (1/1) ... [2018-01-24 20:50:20,797 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:50:20" (1/1) ... [2018-01-24 20:50:20,806 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:50:20" (1/1) ... [2018-01-24 20:50:20,811 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:50:20" (1/1) ... [2018-01-24 20:50:20,813 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:50:20" (1/1) ... [2018-01-24 20:50:20,816 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 20:50:20,817 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 20:50:20,817 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 20:50:20,817 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 20:50:20,818 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:50:20" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 20:50:20,868 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 20:50:20,868 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 20:50:20,868 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 20:50:20,868 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-24 20:50:20,868 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-24 20:50:20,868 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-24 20:50:20,869 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-24 20:50:20,869 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 20:50:20,869 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 20:50:20,869 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 20:50:20,869 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-24 20:50:20,869 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-24 20:50:20,869 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 20:50:20,869 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-24 20:50:20,869 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 20:50:20,869 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 20:50:20,870 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 20:50:21,466 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 20:50:21,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 08:50:21 BoogieIcfgContainer [2018-01-24 20:50:21,467 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 20:50:21,469 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-24 20:50:21,469 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-24 20:50:21,471 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-24 20:50:21,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.01 08:50:20" (1/3) ... [2018-01-24 20:50:21,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e962970 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 08:50:21, skipping insertion in model container [2018-01-24 20:50:21,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:50:20" (2/3) ... [2018-01-24 20:50:21,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e962970 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 08:50:21, skipping insertion in model container [2018-01-24 20:50:21,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 08:50:21" (3/3) ... [2018-01-24 20:50:21,475 INFO L105 eAbstractionObserver]: Analyzing ICFG dll-rb-sentinel_false-unreach-call_false-valid-memtrack.i [2018-01-24 20:50:21,482 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-24 20:50:21,489 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 67 error locations. [2018-01-24 20:50:21,530 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-24 20:50:21,530 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-24 20:50:21,530 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-24 20:50:21,530 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-24 20:50:21,531 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-24 20:50:21,531 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-24 20:50:21,531 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-24 20:50:21,531 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-24 20:50:21,532 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-24 20:50:21,551 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states. [2018-01-24 20:50:21,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-24 20:50:21,558 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:50:21,559 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:50:21,559 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]=== [2018-01-24 20:50:21,563 INFO L82 PathProgramCache]: Analyzing trace with hash 726209746, now seen corresponding path program 1 times [2018-01-24 20:50:21,565 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:50:21,613 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:50:21,613 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:50:21,614 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:50:21,614 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:50:21,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:50:21,654 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:50:21,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:50:21,714 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:50:21,715 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 20:50:21,715 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:50:21,717 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 20:50:21,810 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 20:50:21,811 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 20:50:21,813 INFO L87 Difference]: Start difference. First operand 160 states. Second operand 4 states. [2018-01-24 20:50:22,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:50:22,080 INFO L93 Difference]: Finished difference Result 316 states and 377 transitions. [2018-01-24 20:50:22,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 20:50:22,083 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-24 20:50:22,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:50:22,095 INFO L225 Difference]: With dead ends: 316 [2018-01-24 20:50:22,096 INFO L226 Difference]: Without dead ends: 177 [2018-01-24 20:50:22,100 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:50:22,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2018-01-24 20:50:22,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 154. [2018-01-24 20:50:22,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2018-01-24 20:50:22,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 159 transitions. [2018-01-24 20:50:22,145 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 159 transitions. Word has length 8 [2018-01-24 20:50:22,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:50:22,146 INFO L432 AbstractCegarLoop]: Abstraction has 154 states and 159 transitions. [2018-01-24 20:50:22,146 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 20:50:22,146 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 159 transitions. [2018-01-24 20:50:22,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-24 20:50:22,147 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:50:22,147 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:50:22,147 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]=== [2018-01-24 20:50:22,147 INFO L82 PathProgramCache]: Analyzing trace with hash 726209747, now seen corresponding path program 1 times [2018-01-24 20:50:22,147 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:50:22,149 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:50:22,149 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:50:22,149 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:50:22,150 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:50:22,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:50:22,166 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:50:22,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:50:22,244 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:50:22,244 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 20:50:22,245 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:50:22,246 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 20:50:22,246 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 20:50:22,247 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 20:50:22,248 INFO L87 Difference]: Start difference. First operand 154 states and 159 transitions. Second operand 4 states. [2018-01-24 20:50:22,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:50:22,426 INFO L93 Difference]: Finished difference Result 154 states and 159 transitions. [2018-01-24 20:50:22,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 20:50:22,427 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-24 20:50:22,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:50:22,428 INFO L225 Difference]: With dead ends: 154 [2018-01-24 20:50:22,429 INFO L226 Difference]: Without dead ends: 151 [2018-01-24 20:50:22,430 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:50:22,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-01-24 20:50:22,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2018-01-24 20:50:22,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-01-24 20:50:22,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 156 transitions. [2018-01-24 20:50:22,441 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 156 transitions. Word has length 8 [2018-01-24 20:50:22,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:50:22,442 INFO L432 AbstractCegarLoop]: Abstraction has 151 states and 156 transitions. [2018-01-24 20:50:22,442 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 20:50:22,442 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 156 transitions. [2018-01-24 20:50:22,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-01-24 20:50:22,443 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:50:22,443 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:50:22,443 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]=== [2018-01-24 20:50:22,443 INFO L82 PathProgramCache]: Analyzing trace with hash 3311897, now seen corresponding path program 1 times [2018-01-24 20:50:22,444 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:50:22,445 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:50:22,445 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:50:22,445 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:50:22,446 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:50:22,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:50:22,468 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:50:22,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:50:22,506 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:50:22,506 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 20:50:22,506 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:50:22,506 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 20:50:22,507 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 20:50:22,507 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 20:50:22,507 INFO L87 Difference]: Start difference. First operand 151 states and 156 transitions. Second operand 4 states. [2018-01-24 20:50:22,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:50:22,645 INFO L93 Difference]: Finished difference Result 170 states and 180 transitions. [2018-01-24 20:50:22,646 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 20:50:22,646 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2018-01-24 20:50:22,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:50:22,647 INFO L225 Difference]: With dead ends: 170 [2018-01-24 20:50:22,647 INFO L226 Difference]: Without dead ends: 162 [2018-01-24 20:50:22,648 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:50:22,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2018-01-24 20:50:22,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 147. [2018-01-24 20:50:22,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-01-24 20:50:22,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 154 transitions. [2018-01-24 20:50:22,660 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 154 transitions. Word has length 13 [2018-01-24 20:50:22,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:50:22,660 INFO L432 AbstractCegarLoop]: Abstraction has 147 states and 154 transitions. [2018-01-24 20:50:22,660 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 20:50:22,660 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 154 transitions. [2018-01-24 20:50:22,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-01-24 20:50:22,661 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:50:22,661 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:50:22,661 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]=== [2018-01-24 20:50:22,662 INFO L82 PathProgramCache]: Analyzing trace with hash 3311898, now seen corresponding path program 1 times [2018-01-24 20:50:22,662 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:50:22,663 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:50:22,663 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:50:22,664 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:50:22,664 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:50:22,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:50:22,682 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:50:22,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:50:22,765 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:50:22,765 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 20:50:22,766 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:50:22,766 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 20:50:22,766 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 20:50:22,766 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 20:50:22,767 INFO L87 Difference]: Start difference. First operand 147 states and 154 transitions. Second operand 4 states. [2018-01-24 20:50:22,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:50:22,909 INFO L93 Difference]: Finished difference Result 167 states and 173 transitions. [2018-01-24 20:50:22,910 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 20:50:22,910 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2018-01-24 20:50:22,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:50:22,912 INFO L225 Difference]: With dead ends: 167 [2018-01-24 20:50:22,912 INFO L226 Difference]: Without dead ends: 159 [2018-01-24 20:50:22,913 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:50:22,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-01-24 20:50:22,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 151. [2018-01-24 20:50:22,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-01-24 20:50:22,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 158 transitions. [2018-01-24 20:50:22,924 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 158 transitions. Word has length 13 [2018-01-24 20:50:22,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:50:22,924 INFO L432 AbstractCegarLoop]: Abstraction has 151 states and 158 transitions. [2018-01-24 20:50:22,924 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 20:50:22,925 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 158 transitions. [2018-01-24 20:50:22,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-01-24 20:50:22,925 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:50:22,926 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:50:22,926 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]=== [2018-01-24 20:50:22,926 INFO L82 PathProgramCache]: Analyzing trace with hash -969711578, now seen corresponding path program 1 times [2018-01-24 20:50:22,927 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:50:22,928 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:50:22,929 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:50:22,929 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:50:22,929 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:50:22,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:50:22,957 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:50:23,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:50:23,059 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:50:23,059 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 20:50:23,059 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:50:23,059 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 20:50:23,060 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 20:50:23,060 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 20:50:23,060 INFO L87 Difference]: Start difference. First operand 151 states and 158 transitions. Second operand 4 states. [2018-01-24 20:50:23,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:50:23,198 INFO L93 Difference]: Finished difference Result 170 states and 178 transitions. [2018-01-24 20:50:23,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 20:50:23,198 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2018-01-24 20:50:23,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:50:23,199 INFO L225 Difference]: With dead ends: 170 [2018-01-24 20:50:23,199 INFO L226 Difference]: Without dead ends: 154 [2018-01-24 20:50:23,200 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:50:23,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2018-01-24 20:50:23,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 139. [2018-01-24 20:50:23,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-01-24 20:50:23,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 148 transitions. [2018-01-24 20:50:23,208 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 148 transitions. Word has length 21 [2018-01-24 20:50:23,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:50:23,209 INFO L432 AbstractCegarLoop]: Abstraction has 139 states and 148 transitions. [2018-01-24 20:50:23,209 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 20:50:23,209 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 148 transitions. [2018-01-24 20:50:23,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-01-24 20:50:23,210 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:50:23,210 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:50:23,210 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]=== [2018-01-24 20:50:23,210 INFO L82 PathProgramCache]: Analyzing trace with hash -969711577, now seen corresponding path program 1 times [2018-01-24 20:50:23,211 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:50:23,212 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:50:23,212 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:50:23,212 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:50:23,212 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:50:23,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:50:23,268 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:50:23,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:50:23,356 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:50:23,356 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-24 20:50:23,356 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:50:23,356 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-24 20:50:23,356 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-24 20:50:23,357 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-01-24 20:50:23,357 INFO L87 Difference]: Start difference. First operand 139 states and 148 transitions. Second operand 7 states. [2018-01-24 20:50:23,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:50:23,695 INFO L93 Difference]: Finished difference Result 182 states and 192 transitions. [2018-01-24 20:50:23,696 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 20:50:23,696 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2018-01-24 20:50:23,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:50:23,697 INFO L225 Difference]: With dead ends: 182 [2018-01-24 20:50:23,697 INFO L226 Difference]: Without dead ends: 175 [2018-01-24 20:50:23,697 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-01-24 20:50:23,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-01-24 20:50:23,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 150. [2018-01-24 20:50:23,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2018-01-24 20:50:23,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 162 transitions. [2018-01-24 20:50:23,705 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 162 transitions. Word has length 21 [2018-01-24 20:50:23,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:50:23,705 INFO L432 AbstractCegarLoop]: Abstraction has 150 states and 162 transitions. [2018-01-24 20:50:23,705 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-24 20:50:23,705 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 162 transitions. [2018-01-24 20:50:23,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-01-24 20:50:23,706 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:50:23,706 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:50:23,706 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]=== [2018-01-24 20:50:23,706 INFO L82 PathProgramCache]: Analyzing trace with hash 115077033, now seen corresponding path program 1 times [2018-01-24 20:50:23,706 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:50:23,707 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:50:23,707 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:50:23,707 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:50:23,707 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:50:23,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:50:23,723 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:50:23,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:50:23,758 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:50:23,759 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 20:50:23,759 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:50:23,759 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 20:50:23,759 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 20:50:23,760 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:50:23,760 INFO L87 Difference]: Start difference. First operand 150 states and 162 transitions. Second operand 5 states. [2018-01-24 20:50:23,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:50:23,933 INFO L93 Difference]: Finished difference Result 198 states and 215 transitions. [2018-01-24 20:50:23,933 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 20:50:23,933 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2018-01-24 20:50:23,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:50:23,934 INFO L225 Difference]: With dead ends: 198 [2018-01-24 20:50:23,934 INFO L226 Difference]: Without dead ends: 197 [2018-01-24 20:50:23,935 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-24 20:50:23,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2018-01-24 20:50:23,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 149. [2018-01-24 20:50:23,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-01-24 20:50:23,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 160 transitions. [2018-01-24 20:50:23,942 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 160 transitions. Word has length 23 [2018-01-24 20:50:23,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:50:23,942 INFO L432 AbstractCegarLoop]: Abstraction has 149 states and 160 transitions. [2018-01-24 20:50:23,942 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 20:50:23,943 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 160 transitions. [2018-01-24 20:50:23,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-01-24 20:50:23,943 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:50:23,943 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:50:23,943 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]=== [2018-01-24 20:50:23,943 INFO L82 PathProgramCache]: Analyzing trace with hash 115077034, now seen corresponding path program 1 times [2018-01-24 20:50:23,944 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:50:23,945 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:50:23,945 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:50:23,945 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:50:23,945 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:50:23,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:50:23,960 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:50:24,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:50:24,033 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:50:24,033 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 20:50:24,033 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:50:24,033 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 20:50:24,034 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 20:50:24,034 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:50:24,039 INFO L87 Difference]: Start difference. First operand 149 states and 160 transitions. Second operand 5 states. [2018-01-24 20:50:24,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:50:24,242 INFO L93 Difference]: Finished difference Result 220 states and 238 transitions. [2018-01-24 20:50:24,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 20:50:24,242 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2018-01-24 20:50:24,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:50:24,243 INFO L225 Difference]: With dead ends: 220 [2018-01-24 20:50:24,243 INFO L226 Difference]: Without dead ends: 219 [2018-01-24 20:50:24,244 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-24 20:50:24,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-01-24 20:50:24,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 148. [2018-01-24 20:50:24,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2018-01-24 20:50:24,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 158 transitions. [2018-01-24 20:50:24,249 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 158 transitions. Word has length 23 [2018-01-24 20:50:24,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:50:24,250 INFO L432 AbstractCegarLoop]: Abstraction has 148 states and 158 transitions. [2018-01-24 20:50:24,250 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 20:50:24,250 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 158 transitions. [2018-01-24 20:50:24,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-01-24 20:50:24,250 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:50:24,250 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:50:24,251 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]=== [2018-01-24 20:50:24,251 INFO L82 PathProgramCache]: Analyzing trace with hash 1386253035, now seen corresponding path program 1 times [2018-01-24 20:50:24,251 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:50:24,252 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:50:24,252 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:50:24,252 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:50:24,252 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:50:24,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:50:24,271 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:50:24,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:50:24,427 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:50:24,427 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-24 20:50:24,427 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:50:24,427 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-24 20:50:24,428 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-24 20:50:24,428 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-01-24 20:50:24,428 INFO L87 Difference]: Start difference. First operand 148 states and 158 transitions. Second operand 9 states. [2018-01-24 20:50:25,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:50:25,358 INFO L93 Difference]: Finished difference Result 162 states and 172 transitions. [2018-01-24 20:50:25,358 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-24 20:50:25,358 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2018-01-24 20:50:25,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:50:25,360 INFO L225 Difference]: With dead ends: 162 [2018-01-24 20:50:25,360 INFO L226 Difference]: Without dead ends: 161 [2018-01-24 20:50:25,360 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2018-01-24 20:50:25,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2018-01-24 20:50:25,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 147. [2018-01-24 20:50:25,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-01-24 20:50:25,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 157 transitions. [2018-01-24 20:50:25,367 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 157 transitions. Word has length 27 [2018-01-24 20:50:25,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:50:25,367 INFO L432 AbstractCegarLoop]: Abstraction has 147 states and 157 transitions. [2018-01-24 20:50:25,367 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-24 20:50:25,367 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 157 transitions. [2018-01-24 20:50:25,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-01-24 20:50:25,368 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:50:25,368 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:50:25,368 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]=== [2018-01-24 20:50:25,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1386253036, now seen corresponding path program 1 times [2018-01-24 20:50:25,369 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:50:25,370 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:50:25,370 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:50:25,370 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:50:25,370 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:50:25,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:50:25,388 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:50:25,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:50:25,552 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:50:25,553 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-01-24 20:50:25,553 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:50:25,553 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-24 20:50:25,553 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-24 20:50:25,553 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-01-24 20:50:25,553 INFO L87 Difference]: Start difference. First operand 147 states and 157 transitions. Second operand 10 states. [2018-01-24 20:50:26,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:50:26,306 INFO L93 Difference]: Finished difference Result 188 states and 199 transitions. [2018-01-24 20:50:26,306 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-24 20:50:26,306 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 27 [2018-01-24 20:50:26,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:50:26,308 INFO L225 Difference]: With dead ends: 188 [2018-01-24 20:50:26,308 INFO L226 Difference]: Without dead ends: 177 [2018-01-24 20:50:26,308 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=129, Invalid=291, Unknown=0, NotChecked=0, Total=420 [2018-01-24 20:50:26,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2018-01-24 20:50:26,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 152. [2018-01-24 20:50:26,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2018-01-24 20:50:26,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 162 transitions. [2018-01-24 20:50:26,314 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 162 transitions. Word has length 27 [2018-01-24 20:50:26,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:50:26,315 INFO L432 AbstractCegarLoop]: Abstraction has 152 states and 162 transitions. [2018-01-24 20:50:26,315 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-24 20:50:26,315 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 162 transitions. [2018-01-24 20:50:26,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-01-24 20:50:26,316 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:50:26,317 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:50:26,317 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]=== [2018-01-24 20:50:26,317 INFO L82 PathProgramCache]: Analyzing trace with hash 78293977, now seen corresponding path program 1 times [2018-01-24 20:50:26,317 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:50:26,318 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:50:26,318 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:50:26,318 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:50:26,318 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:50:26,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:50:26,330 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:50:26,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:50:26,473 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:50:26,473 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-24 20:50:26,473 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:50:26,473 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-24 20:50:26,473 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-24 20:50:26,473 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-01-24 20:50:26,474 INFO L87 Difference]: Start difference. First operand 152 states and 162 transitions. Second operand 8 states. [2018-01-24 20:50:26,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:50:26,645 INFO L93 Difference]: Finished difference Result 216 states and 231 transitions. [2018-01-24 20:50:26,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-24 20:50:26,645 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2018-01-24 20:50:26,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:50:26,646 INFO L225 Difference]: With dead ends: 216 [2018-01-24 20:50:26,646 INFO L226 Difference]: Without dead ends: 180 [2018-01-24 20:50:26,647 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2018-01-24 20:50:26,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2018-01-24 20:50:26,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 152. [2018-01-24 20:50:26,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2018-01-24 20:50:26,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 161 transitions. [2018-01-24 20:50:26,652 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 161 transitions. Word has length 33 [2018-01-24 20:50:26,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:50:26,652 INFO L432 AbstractCegarLoop]: Abstraction has 152 states and 161 transitions. [2018-01-24 20:50:26,652 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-24 20:50:26,653 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 161 transitions. [2018-01-24 20:50:26,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-01-24 20:50:26,654 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:50:26,654 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:50:26,654 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]=== [2018-01-24 20:50:26,654 INFO L82 PathProgramCache]: Analyzing trace with hash -133974448, now seen corresponding path program 1 times [2018-01-24 20:50:26,654 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:50:26,655 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:50:26,656 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:50:26,656 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:50:26,656 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:50:26,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:50:26,668 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:50:26,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:50:26,736 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:50:26,736 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 20:50:26,736 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:50:26,736 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 20:50:26,737 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 20:50:26,737 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:50:26,737 INFO L87 Difference]: Start difference. First operand 152 states and 161 transitions. Second operand 5 states. [2018-01-24 20:50:27,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:50:27,065 INFO L93 Difference]: Finished difference Result 227 states and 242 transitions. [2018-01-24 20:50:27,066 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 20:50:27,066 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2018-01-24 20:50:27,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:50:27,067 INFO L225 Difference]: With dead ends: 227 [2018-01-24 20:50:27,067 INFO L226 Difference]: Without dead ends: 226 [2018-01-24 20:50:27,067 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-24 20:50:27,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2018-01-24 20:50:27,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 151. [2018-01-24 20:50:27,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-01-24 20:50:27,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 160 transitions. [2018-01-24 20:50:27,075 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 160 transitions. Word has length 34 [2018-01-24 20:50:27,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:50:27,076 INFO L432 AbstractCegarLoop]: Abstraction has 151 states and 160 transitions. [2018-01-24 20:50:27,076 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 20:50:27,076 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 160 transitions. [2018-01-24 20:50:27,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-01-24 20:50:27,077 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:50:27,077 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:50:27,077 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]=== [2018-01-24 20:50:27,078 INFO L82 PathProgramCache]: Analyzing trace with hash -133974447, now seen corresponding path program 1 times [2018-01-24 20:50:27,078 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:50:27,079 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:50:27,079 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:50:27,079 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:50:27,079 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:50:27,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:50:27,097 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:50:27,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:50:27,172 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:50:27,172 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 20:50:27,172 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:50:27,172 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 20:50:27,173 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 20:50:27,173 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:50:27,173 INFO L87 Difference]: Start difference. First operand 151 states and 160 transitions. Second operand 5 states. [2018-01-24 20:50:27,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:50:27,382 INFO L93 Difference]: Finished difference Result 249 states and 266 transitions. [2018-01-24 20:50:27,382 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 20:50:27,382 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2018-01-24 20:50:27,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:50:27,383 INFO L225 Difference]: With dead ends: 249 [2018-01-24 20:50:27,384 INFO L226 Difference]: Without dead ends: 248 [2018-01-24 20:50:27,384 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-24 20:50:27,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2018-01-24 20:50:27,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 150. [2018-01-24 20:50:27,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2018-01-24 20:50:27,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 159 transitions. [2018-01-24 20:50:27,391 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 159 transitions. Word has length 34 [2018-01-24 20:50:27,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:50:27,391 INFO L432 AbstractCegarLoop]: Abstraction has 150 states and 159 transitions. [2018-01-24 20:50:27,391 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 20:50:27,391 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 159 transitions. [2018-01-24 20:50:27,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-01-24 20:50:27,392 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:50:27,392 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:50:27,392 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]=== [2018-01-24 20:50:27,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1586747252, now seen corresponding path program 1 times [2018-01-24 20:50:27,393 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:50:27,394 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:50:27,394 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:50:27,394 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:50:27,394 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:50:27,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:50:27,404 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:50:27,505 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:50:27,506 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 20:50:27,506 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-24 20:50:27,508 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 37 with the following transitions: [2018-01-24 20:50:27,513 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [11], [12], [13], [16], [19], [22], [26], [28], [31], [146], [150], [155], [159], [167], [168], [175], [179], [187], [193], [194], [195], [243], [245], [248], [298], [299], [303], [304], [305] [2018-01-24 20:50:27,566 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-24 20:50:27,566 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