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-queue_true-unreach-call_true-valid-memsafety.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 20:55:00,265 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 20:55:00,267 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 20:55:00,280 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 20:55:00,280 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 20:55:00,281 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 20:55:00,282 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 20:55:00,284 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 20:55:00,286 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 20:55:00,287 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 20:55:00,288 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 20:55:00,288 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 20:55:00,289 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 20:55:00,290 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 20:55:00,291 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 20:55:00,293 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 20:55:00,295 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 20:55:00,297 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 20:55:00,299 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 20:55:00,300 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 20:55:00,303 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-24 20:55:00,303 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-24 20:55:00,303 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-24 20:55:00,304 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-24 20:55:00,305 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-24 20:55:00,306 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-24 20:55:00,306 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-24 20:55:00,307 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-24 20:55:00,307 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-24 20:55:00,308 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 20:55:00,308 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 20:55:00,309 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 20:55:00,319 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 20:55:00,319 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 20:55:00,320 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 20:55:00,320 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 20:55:00,320 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 20:55:00,320 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-24 20:55:00,321 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 20:55:00,321 INFO L133 SettingsManager]: * Precise comparison operator=true [2018-01-24 20:55:00,321 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 20:55:00,322 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 20:55:00,322 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 20:55:00,322 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 20:55:00,322 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 20:55:00,323 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 20:55:00,323 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 20:55:00,323 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 20:55:00,323 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 20:55:00,323 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 20:55:00,323 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 20:55:00,324 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 20:55:00,324 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 20:55:00,324 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 20:55:00,324 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 20:55:00,324 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 20:55:00,325 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 20:55:00,325 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 20:55:00,325 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 20:55:00,325 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 20:55:00,325 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 20:55:00,326 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 20:55:00,326 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-24 20:55:00,326 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 20:55:00,326 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 20:55:00,326 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 20:55:00,327 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-24 20:55:00,327 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 20:55:00,328 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 20:55:00,362 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 20:55:00,372 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 20:55:00,376 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 20:55:00,377 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 20:55:00,378 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 20:55:00,378 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-queue_true-unreach-call_true-valid-memsafety.i [2018-01-24 20:55:00,545 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 20:55:00,551 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 20:55:00,552 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 20:55:00,552 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 20:55:00,557 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 20:55:00,558 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 08:55:00" (1/1) ... [2018-01-24 20:55:00,560 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@454eb2a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:55:00, skipping insertion in model container [2018-01-24 20:55:00,561 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 08:55:00" (1/1) ... [2018-01-24 20:55:00,581 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 20:55:00,627 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 20:55:00,752 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 20:55:00,778 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 20:55:00,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:55:00 WrapperNode [2018-01-24 20:55:00,790 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 20:55:00,791 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 20:55:00,791 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 20:55:00,792 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 20:55:00,803 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:55:00" (1/1) ... [2018-01-24 20:55:00,804 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:55:00" (1/1) ... [2018-01-24 20:55:00,814 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:55:00" (1/1) ... [2018-01-24 20:55:00,815 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:55:00" (1/1) ... [2018-01-24 20:55:00,825 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:55:00" (1/1) ... [2018-01-24 20:55:00,832 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:55:00" (1/1) ... [2018-01-24 20:55:00,834 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:55:00" (1/1) ... [2018-01-24 20:55:00,838 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 20:55:00,838 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 20:55:00,839 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 20:55:00,839 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 20:55:00,840 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:55:00" (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 20:55:00,892 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 20:55:00,892 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 20:55:00,893 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 20:55:00,893 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-24 20:55:00,893 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-24 20:55:00,893 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-24 20:55:00,893 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-24 20:55:00,893 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 20:55:00,893 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 20:55:00,893 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 20:55:00,893 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-24 20:55:00,894 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-24 20:55:00,894 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 20:55:00,894 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-24 20:55:00,894 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 20:55:00,894 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 20:55:00,894 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 20:55:01,507 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 20:55:01,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 08:55:01 BoogieIcfgContainer [2018-01-24 20:55:01,508 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 20:55:01,510 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-24 20:55:01,510 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-24 20:55:01,512 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-24 20:55:01,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.01 08:55:00" (1/3) ... [2018-01-24 20:55:01,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ffdbaee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 08:55:01, skipping insertion in model container [2018-01-24 20:55:01,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:55:00" (2/3) ... [2018-01-24 20:55:01,514 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ffdbaee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 08:55:01, skipping insertion in model container [2018-01-24 20:55:01,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 08:55:01" (3/3) ... [2018-01-24 20:55:01,516 INFO L105 eAbstractionObserver]: Analyzing ICFG dll-queue_true-unreach-call_true-valid-memsafety.i [2018-01-24 20:55:01,523 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-24 20:55:01,529 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 61 error locations. [2018-01-24 20:55:01,572 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-24 20:55:01,572 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-24 20:55:01,573 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-24 20:55:01,573 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-24 20:55:01,573 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-24 20:55:01,573 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-24 20:55:01,573 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-24 20:55:01,573 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-24 20:55:01,574 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-24 20:55:01,593 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states. [2018-01-24 20:55:01,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-24 20:55:01,599 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:55:01,600 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:55:01,600 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr60EnsuresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:55:01,604 INFO L82 PathProgramCache]: Analyzing trace with hash 1694878026, now seen corresponding path program 1 times [2018-01-24 20:55:01,606 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:55:01,650 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:55:01,651 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:55:01,651 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:55:01,651 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:55:01,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:55:01,701 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:55:01,766 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 20:55:01,768 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:55:01,769 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 20:55:01,769 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:55:01,773 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 20:55:01,788 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 20:55:01,789 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 20:55:01,792 INFO L87 Difference]: Start difference. First operand 172 states. Second operand 4 states. [2018-01-24 20:55:02,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:55:02,230 INFO L93 Difference]: Finished difference Result 331 states and 452 transitions. [2018-01-24 20:55:02,231 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 20:55:02,232 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-24 20:55:02,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:55:02,247 INFO L225 Difference]: With dead ends: 331 [2018-01-24 20:55:02,247 INFO L226 Difference]: Without dead ends: 169 [2018-01-24 20:55:02,252 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 20:55:02,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2018-01-24 20:55:02,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 161. [2018-01-24 20:55:02,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-01-24 20:55:02,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 173 transitions. [2018-01-24 20:55:02,307 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 173 transitions. Word has length 8 [2018-01-24 20:55:02,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:55:02,307 INFO L432 AbstractCegarLoop]: Abstraction has 161 states and 173 transitions. [2018-01-24 20:55:02,307 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 20:55:02,307 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 173 transitions. [2018-01-24 20:55:02,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-24 20:55:02,308 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:55:02,308 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:55:02,308 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr60EnsuresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:55:02,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1694878027, now seen corresponding path program 1 times [2018-01-24 20:55:02,309 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:55:02,310 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:55:02,310 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:55:02,310 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:55:02,310 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:55:02,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:55:02,330 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:55:02,410 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 20:55:02,411 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:55:02,411 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 20:55:02,411 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:55:02,413 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 20:55:02,413 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 20:55:02,413 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 20:55:02,414 INFO L87 Difference]: Start difference. First operand 161 states and 173 transitions. Second operand 4 states. [2018-01-24 20:55:02,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:55:02,617 INFO L93 Difference]: Finished difference Result 166 states and 176 transitions. [2018-01-24 20:55:02,617 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 20:55:02,617 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-24 20:55:02,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:55:02,619 INFO L225 Difference]: With dead ends: 166 [2018-01-24 20:55:02,620 INFO L226 Difference]: Without dead ends: 154 [2018-01-24 20:55:02,621 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 20:55:02,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2018-01-24 20:55:02,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 150. [2018-01-24 20:55:02,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2018-01-24 20:55:02,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 161 transitions. [2018-01-24 20:55:02,636 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 161 transitions. Word has length 8 [2018-01-24 20:55:02,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:55:02,636 INFO L432 AbstractCegarLoop]: Abstraction has 150 states and 161 transitions. [2018-01-24 20:55:02,636 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 20:55:02,636 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 161 transitions. [2018-01-24 20:55:02,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-01-24 20:55:02,637 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:55:02,637 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:55:02,637 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr60EnsuresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:55:02,637 INFO L82 PathProgramCache]: Analyzing trace with hash 1424550359, now seen corresponding path program 1 times [2018-01-24 20:55:02,637 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:55:02,638 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:55:02,639 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:55:02,639 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:55:02,639 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:55:02,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:55:02,666 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:55:02,735 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 20:55:02,736 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:55:02,736 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 20:55:02,736 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:55:02,736 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 20:55:02,736 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 20:55:02,736 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 20:55:02,737 INFO L87 Difference]: Start difference. First operand 150 states and 161 transitions. Second operand 4 states. [2018-01-24 20:55:02,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:55:02,867 INFO L93 Difference]: Finished difference Result 162 states and 172 transitions. [2018-01-24 20:55:02,867 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 20:55:02,867 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2018-01-24 20:55:02,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:55:02,868 INFO L225 Difference]: With dead ends: 162 [2018-01-24 20:55:02,868 INFO L226 Difference]: Without dead ends: 154 [2018-01-24 20:55:02,869 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:55:02,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2018-01-24 20:55:02,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 149. [2018-01-24 20:55:02,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-01-24 20:55:02,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 162 transitions. [2018-01-24 20:55:02,880 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 162 transitions. Word has length 16 [2018-01-24 20:55:02,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:55:02,880 INFO L432 AbstractCegarLoop]: Abstraction has 149 states and 162 transitions. [2018-01-24 20:55:02,881 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 20:55:02,881 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 162 transitions. [2018-01-24 20:55:02,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-01-24 20:55:02,881 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:55:02,882 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:55:02,882 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr60EnsuresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:55:02,883 INFO L82 PathProgramCache]: Analyzing trace with hash 1424550360, now seen corresponding path program 1 times [2018-01-24 20:55:02,883 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:55:02,884 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:55:02,884 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:55:02,884 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:55:02,884 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:55:02,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:55:02,904 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:55:03,033 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 20:55:03,033 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:55:03,033 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-24 20:55:03,033 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:55:03,034 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-24 20:55:03,034 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-24 20:55:03,034 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-01-24 20:55:03,035 INFO L87 Difference]: Start difference. First operand 149 states and 162 transitions. Second operand 7 states. [2018-01-24 20:55:03,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:55:03,381 INFO L93 Difference]: Finished difference Result 239 states and 254 transitions. [2018-01-24 20:55:03,381 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-24 20:55:03,381 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2018-01-24 20:55:03,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:55:03,383 INFO L225 Difference]: With dead ends: 239 [2018-01-24 20:55:03,384 INFO L226 Difference]: Without dead ends: 235 [2018-01-24 20:55:03,384 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2018-01-24 20:55:03,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2018-01-24 20:55:03,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 158. [2018-01-24 20:55:03,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2018-01-24 20:55:03,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 173 transitions. [2018-01-24 20:55:03,396 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 173 transitions. Word has length 16 [2018-01-24 20:55:03,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:55:03,396 INFO L432 AbstractCegarLoop]: Abstraction has 158 states and 173 transitions. [2018-01-24 20:55:03,396 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-24 20:55:03,396 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 173 transitions. [2018-01-24 20:55:03,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-24 20:55:03,397 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:55:03,397 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:55:03,397 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr60EnsuresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:55:03,397 INFO L82 PathProgramCache]: Analyzing trace with hash -1101672517, now seen corresponding path program 1 times [2018-01-24 20:55:03,397 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:55:03,398 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:55:03,398 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:55:03,398 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:55:03,398 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:55:03,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:55:03,415 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:55:03,512 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 20:55:03,512 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:55:03,512 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 20:55:03,513 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:55:03,513 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 20:55:03,513 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 20:55:03,513 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:55:03,514 INFO L87 Difference]: Start difference. First operand 158 states and 173 transitions. Second operand 5 states. [2018-01-24 20:55:03,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:55:03,740 INFO L93 Difference]: Finished difference Result 260 states and 283 transitions. [2018-01-24 20:55:03,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 20:55:03,740 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2018-01-24 20:55:03,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:55:03,742 INFO L225 Difference]: With dead ends: 260 [2018-01-24 20:55:03,742 INFO L226 Difference]: Without dead ends: 259 [2018-01-24 20:55:03,742 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 20:55:03,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2018-01-24 20:55:03,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 157. [2018-01-24 20:55:03,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-01-24 20:55:03,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 171 transitions. [2018-01-24 20:55:03,753 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 171 transitions. Word has length 18 [2018-01-24 20:55:03,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:55:03,754 INFO L432 AbstractCegarLoop]: Abstraction has 157 states and 171 transitions. [2018-01-24 20:55:03,754 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 20:55:03,754 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 171 transitions. [2018-01-24 20:55:03,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-24 20:55:03,755 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:55:03,755 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:55:03,755 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr60EnsuresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:55:03,755 INFO L82 PathProgramCache]: Analyzing trace with hash -1101672518, now seen corresponding path program 1 times [2018-01-24 20:55:03,755 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:55:03,756 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:55:03,757 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:55:03,757 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:55:03,757 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:55:03,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:55:03,768 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:55:03,801 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 20:55:03,801 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:55:03,801 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 20:55:03,801 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:55:03,801 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 20:55:03,801 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 20:55:03,802 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:55:03,802 INFO L87 Difference]: Start difference. First operand 157 states and 171 transitions. Second operand 5 states. [2018-01-24 20:55:04,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:55:04,003 INFO L93 Difference]: Finished difference Result 250 states and 271 transitions. [2018-01-24 20:55:04,003 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 20:55:04,003 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2018-01-24 20:55:04,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:55:04,004 INFO L225 Difference]: With dead ends: 250 [2018-01-24 20:55:04,004 INFO L226 Difference]: Without dead ends: 249 [2018-01-24 20:55:04,005 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 20:55:04,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2018-01-24 20:55:04,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 156. [2018-01-24 20:55:04,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2018-01-24 20:55:04,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 169 transitions. [2018-01-24 20:55:04,013 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 169 transitions. Word has length 18 [2018-01-24 20:55:04,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:55:04,013 INFO L432 AbstractCegarLoop]: Abstraction has 156 states and 169 transitions. [2018-01-24 20:55:04,014 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 20:55:04,014 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 169 transitions. [2018-01-24 20:55:04,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-24 20:55:04,015 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:55:04,015 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:55:04,015 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr60EnsuresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:55:04,015 INFO L82 PathProgramCache]: Analyzing trace with hash -82522180, now seen corresponding path program 1 times [2018-01-24 20:55:04,015 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:55:04,016 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:55:04,016 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:55:04,016 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:55:04,016 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:55:04,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:55:04,034 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:55:04,149 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 20:55:04,150 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:55:04,150 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-24 20:55:04,150 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:55:04,150 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-24 20:55:04,151 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-24 20:55:04,151 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-01-24 20:55:04,151 INFO L87 Difference]: Start difference. First operand 156 states and 169 transitions. Second operand 9 states. [2018-01-24 20:55:04,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:55:04,604 INFO L93 Difference]: Finished difference Result 160 states and 171 transitions. [2018-01-24 20:55:04,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-24 20:55:04,604 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2018-01-24 20:55:04,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:55:04,605 INFO L225 Difference]: With dead ends: 160 [2018-01-24 20:55:04,605 INFO L226 Difference]: Without dead ends: 159 [2018-01-24 20:55:04,605 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2018-01-24 20:55:04,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-01-24 20:55:04,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 155. [2018-01-24 20:55:04,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-01-24 20:55:04,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 168 transitions. [2018-01-24 20:55:04,611 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 168 transitions. Word has length 22 [2018-01-24 20:55:04,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:55:04,612 INFO L432 AbstractCegarLoop]: Abstraction has 155 states and 168 transitions. [2018-01-24 20:55:04,612 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-24 20:55:04,612 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 168 transitions. [2018-01-24 20:55:04,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-24 20:55:04,612 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:55:04,613 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:55:04,613 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr60EnsuresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:55:04,613 INFO L82 PathProgramCache]: Analyzing trace with hash -82522179, now seen corresponding path program 1 times [2018-01-24 20:55:04,613 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:55:04,614 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:55:04,614 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:55:04,614 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:55:04,614 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:55:04,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:55:04,629 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:55:04,801 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 20:55:04,802 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:55:04,802 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-01-24 20:55:04,802 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:55:04,802 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-24 20:55:04,803 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-24 20:55:04,803 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-01-24 20:55:04,803 INFO L87 Difference]: Start difference. First operand 155 states and 168 transitions. Second operand 10 states. [2018-01-24 20:55:05,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:55:05,491 INFO L93 Difference]: Finished difference Result 226 states and 240 transitions. [2018-01-24 20:55:05,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-24 20:55:05,491 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2018-01-24 20:55:05,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:55:05,492 INFO L225 Difference]: With dead ends: 226 [2018-01-24 20:55:05,492 INFO L226 Difference]: Without dead ends: 219 [2018-01-24 20:55:05,493 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 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 20:55:05,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-01-24 20:55:05,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 139. [2018-01-24 20:55:05,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-01-24 20:55:05,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 151 transitions. [2018-01-24 20:55:05,501 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 151 transitions. Word has length 22 [2018-01-24 20:55:05,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:55:05,501 INFO L432 AbstractCegarLoop]: Abstraction has 139 states and 151 transitions. [2018-01-24 20:55:05,502 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-24 20:55:05,502 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 151 transitions. [2018-01-24 20:55:05,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-24 20:55:05,503 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:55:05,503 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] [2018-01-24 20:55:05,504 INFO L371 AbstractCegarLoop]: === Iteration 9 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr60EnsuresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:55:05,504 INFO L82 PathProgramCache]: Analyzing trace with hash 1060471439, now seen corresponding path program 1 times [2018-01-24 20:55:05,504 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:55:05,505 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:55:05,505 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:55:05,505 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:55:05,506 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:55:05,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:55:05,517 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:55:05,653 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 20:55:05,654 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:55:05,654 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-24 20:55:05,654 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:55:05,654 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-24 20:55:05,655 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-24 20:55:05,655 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-24 20:55:05,655 INFO L87 Difference]: Start difference. First operand 139 states and 151 transitions. Second operand 6 states. [2018-01-24 20:55:05,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:55:05,817 INFO L93 Difference]: Finished difference Result 258 states and 282 transitions. [2018-01-24 20:55:05,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-24 20:55:05,818 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2018-01-24 20:55:05,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:55:05,819 INFO L225 Difference]: With dead ends: 258 [2018-01-24 20:55:05,819 INFO L226 Difference]: Without dead ends: 222 [2018-01-24 20:55:05,820 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-01-24 20:55:05,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2018-01-24 20:55:05,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 198. [2018-01-24 20:55:05,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2018-01-24 20:55:05,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 228 transitions. [2018-01-24 20:55:05,829 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 228 transitions. Word has length 29 [2018-01-24 20:55:05,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:55:05,829 INFO L432 AbstractCegarLoop]: Abstraction has 198 states and 228 transitions. [2018-01-24 20:55:05,829 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-24 20:55:05,829 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 228 transitions. [2018-01-24 20:55:05,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-24 20:55:05,830 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:55:05,831 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] [2018-01-24 20:55:05,831 INFO L371 AbstractCegarLoop]: === Iteration 10 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr60EnsuresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:55:05,831 INFO L82 PathProgramCache]: Analyzing trace with hash 109889057, now seen corresponding path program 1 times [2018-01-24 20:55:05,831 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:55:05,832 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:55:05,832 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:55:05,832 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:55:05,832 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:55:05,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:55:05,841 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:55:05,854 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 20:55:05,854 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:55:05,854 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 20:55:05,855 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:55:05,855 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-24 20:55:05,855 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-24 20:55:05,855 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-24 20:55:05,855 INFO L87 Difference]: Start difference. First operand 198 states and 228 transitions. Second operand 3 states. [2018-01-24 20:55:05,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:55:05,887 INFO L93 Difference]: Finished difference Result 361 states and 407 transitions. [2018-01-24 20:55:05,887 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-24 20:55:05,887 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2018-01-24 20:55:05,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:55:05,888 INFO L225 Difference]: With dead ends: 361 [2018-01-24 20:55:05,889 INFO L226 Difference]: Without dead ends: 181 [2018-01-24 20:55:05,890 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-24 20:55:05,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2018-01-24 20:55:05,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 163. [2018-01-24 20:55:05,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-01-24 20:55:05,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 176 transitions. [2018-01-24 20:55:05,902 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 176 transitions. Word has length 29 [2018-01-24 20:55:05,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:55:05,902 INFO L432 AbstractCegarLoop]: Abstraction has 163 states and 176 transitions. [2018-01-24 20:55:05,903 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-24 20:55:05,903 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 176 transitions. [2018-01-24 20:55:05,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-24 20:55:05,904 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:55:05,904 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] [2018-01-24 20:55:05,904 INFO L371 AbstractCegarLoop]: === Iteration 11 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr60EnsuresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:55:05,904 INFO L82 PathProgramCache]: Analyzing trace with hash -1428666095, now seen corresponding path program 1 times [2018-01-24 20:55:05,904 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:55:05,905 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:55:05,905 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:55:05,906 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:55:05,906 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:55:05,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:55:05,916 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:55:05,973 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 20:55:05,973 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:55:05,973 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 20:55:05,973 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:55:05,974 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 20:55:05,974 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 20:55:05,974 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 20:55:05,974 INFO L87 Difference]: Start difference. First operand 163 states and 176 transitions. Second operand 4 states. [2018-01-24 20:55:06,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:55:06,037 INFO L93 Difference]: Finished difference Result 166 states and 178 transitions. [2018-01-24 20:55:06,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 20:55:06,037 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-01-24 20:55:06,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:55:06,038 INFO L225 Difference]: With dead ends: 166 [2018-01-24 20:55:06,039 INFO L226 Difference]: Without dead ends: 163 [2018-01-24 20:55:06,039 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:55:06,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-01-24 20:55:06,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2018-01-24 20:55:06,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-01-24 20:55:06,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 175 transitions. [2018-01-24 20:55:06,049 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 175 transitions. Word has length 30 [2018-01-24 20:55:06,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:55:06,050 INFO L432 AbstractCegarLoop]: Abstraction has 163 states and 175 transitions. [2018-01-24 20:55:06,050 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 20:55:06,050 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 175 transitions. [2018-01-24 20:55:06,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-01-24 20:55:06,051 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:55:06,051 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] [2018-01-24 20:55:06,051 INFO L371 AbstractCegarLoop]: === Iteration 12 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr60EnsuresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:55:06,052 INFO L82 PathProgramCache]: Analyzing trace with hash -578814549, now seen corresponding path program 1 times [2018-01-24 20:55:06,052 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:55:06,052 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:55:06,053 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:55:06,053 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:55:06,053 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:55:06,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:55:06,064 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:55:06,180 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 20:55:06,180 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 20:55:06,180 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-24 20:55:06,181 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 35 with the following transitions: [2018-01-24 20:55:06,183 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [11], [15], [17], [20], [108], [113], [117], [165], [232], [354], [356], [359], [363], [365], [370], [374], [414], [420], [421], [422], [424], [425], [434], [435], [439], [440], [441] [2018-01-24 20:55:06,233 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-24 20:55:06,233 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