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_smtcomp.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-rb-cnstr_1_true-unreach-call_true-valid-memsafety.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-25 06:23:44,436 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-25 06:23:44,438 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-25 06:23:44,451 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-25 06:23:44,451 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-25 06:23:44,452 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-25 06:23:44,454 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-25 06:23:44,455 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-25 06:23:44,458 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-25 06:23:44,459 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-25 06:23:44,459 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-25 06:23:44,460 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-25 06:23:44,461 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-25 06:23:44,462 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-25 06:23:44,462 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-25 06:23:44,465 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-25 06:23:44,467 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-25 06:23:44,469 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-25 06:23:44,470 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-25 06:23:44,471 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-25 06:23:44,474 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-25 06:23:44,474 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-25 06:23:44,474 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-25 06:23:44,475 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-25 06:23:44,476 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-25 06:23:44,477 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-25 06:23:44,478 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-25 06:23:44,478 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-25 06:23:44,479 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-25 06:23:44,479 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-25 06:23:44,479 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-25 06:23:44,480 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_smtcomp.epf [2018-01-25 06:23:44,489 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-25 06:23:44,489 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-25 06:23:44,490 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-25 06:23:44,490 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-25 06:23:44,490 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-25 06:23:44,491 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-25 06:23:44,491 INFO L133 SettingsManager]: * Precise comparison operator=true [2018-01-25 06:23:44,491 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-25 06:23:44,491 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-25 06:23:44,492 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-25 06:23:44,492 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-25 06:23:44,492 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-25 06:23:44,492 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-25 06:23:44,492 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-25 06:23:44,493 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-25 06:23:44,493 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-25 06:23:44,493 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-25 06:23:44,493 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-25 06:23:44,493 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-25 06:23:44,494 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-25 06:23:44,494 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-25 06:23:44,494 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-25 06:23:44,494 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-25 06:23:44,494 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-25 06:23:44,494 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-25 06:23:44,495 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-25 06:23:44,495 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-25 06:23:44,495 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-25 06:23:44,495 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-25 06:23:44,496 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-25 06:23:44,496 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-25 06:23:44,496 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-25 06:23:44,496 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-25 06:23:44,496 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-25 06:23:44,497 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-25 06:23:44,497 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-25 06:23:44,532 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-25 06:23:44,545 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-25 06:23:44,550 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-25 06:23:44,551 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-25 06:23:44,552 INFO L276 PluginConnector]: CDTParser initialized [2018-01-25 06:23:44,552 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-rb-cnstr_1_true-unreach-call_true-valid-memsafety.i [2018-01-25 06:23:44,729 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-25 06:23:44,734 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-25 06:23:44,735 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-25 06:23:44,735 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-25 06:23:44,740 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-25 06:23:44,741 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 06:23:44" (1/1) ... [2018-01-25 06:23:44,744 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e82129b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 06:23:44, skipping insertion in model container [2018-01-25 06:23:44,744 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 06:23:44" (1/1) ... [2018-01-25 06:23:44,758 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 06:23:44,797 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 06:23:44,919 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 06:23:44,944 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 06:23:44,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 06:23:44 WrapperNode [2018-01-25 06:23:44,954 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-25 06:23:44,955 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-25 06:23:44,955 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-25 06:23:44,955 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-25 06:23:44,969 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 06:23:44" (1/1) ... [2018-01-25 06:23:44,969 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 06:23:44" (1/1) ... [2018-01-25 06:23:44,979 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 06:23:44" (1/1) ... [2018-01-25 06:23:44,979 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 06:23:44" (1/1) ... [2018-01-25 06:23:44,986 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 06:23:44" (1/1) ... [2018-01-25 06:23:44,991 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 06:23:44" (1/1) ... [2018-01-25 06:23:44,993 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 06:23:44" (1/1) ... [2018-01-25 06:23:44,996 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-25 06:23:44,996 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-25 06:23:44,997 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-25 06:23:44,997 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-25 06:23:44,998 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 06:23:44" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-25 06:23:45,047 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-25 06:23:45,047 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-25 06:23:45,047 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-25 06:23:45,047 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-25 06:23:45,048 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-25 06:23:45,048 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-25 06:23:45,048 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-25 06:23:45,048 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-25 06:23:45,048 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-25 06:23:45,048 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-25 06:23:45,049 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-25 06:23:45,049 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-25 06:23:45,049 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-25 06:23:45,049 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-25 06:23:45,049 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-25 06:23:45,049 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-25 06:23:45,050 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-25 06:23:45,511 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-25 06:23:45,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 06:23:45 BoogieIcfgContainer [2018-01-25 06:23:45,512 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-25 06:23:45,513 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-25 06:23:45,513 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-25 06:23:45,515 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-25 06:23:45,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.01 06:23:44" (1/3) ... [2018-01-25 06:23:45,516 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@518863e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 06:23:45, skipping insertion in model container [2018-01-25 06:23:45,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 06:23:44" (2/3) ... [2018-01-25 06:23:45,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@518863e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 06:23:45, skipping insertion in model container [2018-01-25 06:23:45,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 06:23:45" (3/3) ... [2018-01-25 06:23:45,518 INFO L105 eAbstractionObserver]: Analyzing ICFG sll-rb-cnstr_1_true-unreach-call_true-valid-memsafety.i [2018-01-25 06:23:45,525 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-25 06:23:45,531 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 47 error locations. [2018-01-25 06:23:45,570 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-25 06:23:45,570 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-25 06:23:45,570 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-25 06:23:45,570 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-25 06:23:45,570 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-25 06:23:45,570 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-25 06:23:45,571 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-25 06:23:45,571 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-25 06:23:45,571 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-25 06:23:45,589 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states. [2018-01-25 06:23:45,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-25 06:23:45,595 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 06:23:45,596 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 06:23:45,596 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr46EnsuresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 06:23:45,600 INFO L82 PathProgramCache]: Analyzing trace with hash -2026691577, now seen corresponding path program 1 times [2018-01-25 06:23:45,601 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 06:23:45,648 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:23:45,648 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 06:23:45,648 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:23:45,648 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 06:23:45,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 06:23:45,688 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 06:23:45,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 06:23:45,766 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 06:23:45,767 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 06:23:45,767 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 06:23:45,769 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 06:23:45,861 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 06:23:45,862 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 06:23:45,874 INFO L87 Difference]: Start difference. First operand 117 states. Second operand 4 states. [2018-01-25 06:23:46,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 06:23:46,115 INFO L93 Difference]: Finished difference Result 199 states and 248 transitions. [2018-01-25 06:23:46,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 06:23:46,117 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-25 06:23:46,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 06:23:46,129 INFO L225 Difference]: With dead ends: 199 [2018-01-25 06:23:46,129 INFO L226 Difference]: Without dead ends: 126 [2018-01-25 06:23:46,133 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-25 06:23:46,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2018-01-25 06:23:46,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 111. [2018-01-25 06:23:46,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-01-25 06:23:46,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 118 transitions. [2018-01-25 06:23:46,177 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 118 transitions. Word has length 8 [2018-01-25 06:23:46,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 06:23:46,178 INFO L432 AbstractCegarLoop]: Abstraction has 111 states and 118 transitions. [2018-01-25 06:23:46,178 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 06:23:46,178 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 118 transitions. [2018-01-25 06:23:46,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-25 06:23:46,178 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 06:23:46,178 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 06:23:46,178 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr46EnsuresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 06:23:46,179 INFO L82 PathProgramCache]: Analyzing trace with hash -2026691576, now seen corresponding path program 1 times [2018-01-25 06:23:46,179 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 06:23:46,180 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:23:46,180 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 06:23:46,180 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:23:46,180 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 06:23:46,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 06:23:46,196 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 06:23:46,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 06:23:46,248 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 06:23:46,248 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 06:23:46,249 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 06:23:46,250 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 06:23:46,250 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 06:23:46,250 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 06:23:46,250 INFO L87 Difference]: Start difference. First operand 111 states and 118 transitions. Second operand 4 states. [2018-01-25 06:23:46,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 06:23:46,397 INFO L93 Difference]: Finished difference Result 131 states and 137 transitions. [2018-01-25 06:23:46,398 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-25 06:23:46,399 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-25 06:23:46,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 06:23:46,401 INFO L225 Difference]: With dead ends: 131 [2018-01-25 06:23:46,401 INFO L226 Difference]: Without dead ends: 124 [2018-01-25 06:23:46,402 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-25 06:23:46,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2018-01-25 06:23:46,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 116. [2018-01-25 06:23:46,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2018-01-25 06:23:46,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 123 transitions. [2018-01-25 06:23:46,423 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 123 transitions. Word has length 8 [2018-01-25 06:23:46,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 06:23:46,423 INFO L432 AbstractCegarLoop]: Abstraction has 116 states and 123 transitions. [2018-01-25 06:23:46,423 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 06:23:46,423 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 123 transitions. [2018-01-25 06:23:46,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-01-25 06:23:46,426 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 06:23:46,426 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 06:23:46,426 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr46EnsuresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 06:23:46,426 INFO L82 PathProgramCache]: Analyzing trace with hash -1176954998, now seen corresponding path program 1 times [2018-01-25 06:23:46,427 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 06:23:46,428 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:23:46,429 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 06:23:46,429 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:23:46,429 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 06:23:46,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 06:23:46,450 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 06:23:46,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 06:23:46,542 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 06:23:46,542 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 06:23:46,542 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 06:23:46,543 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 06:23:46,543 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 06:23:46,543 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 06:23:46,543 INFO L87 Difference]: Start difference. First operand 116 states and 123 transitions. Second operand 4 states. [2018-01-25 06:23:46,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 06:23:46,687 INFO L93 Difference]: Finished difference Result 135 states and 143 transitions. [2018-01-25 06:23:46,687 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 06:23:46,687 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2018-01-25 06:23:46,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 06:23:46,688 INFO L225 Difference]: With dead ends: 135 [2018-01-25 06:23:46,688 INFO L226 Difference]: Without dead ends: 123 [2018-01-25 06:23:46,689 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-25 06:23:46,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-01-25 06:23:46,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 108. [2018-01-25 06:23:46,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2018-01-25 06:23:46,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 117 transitions. [2018-01-25 06:23:46,699 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 117 transitions. Word has length 15 [2018-01-25 06:23:46,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 06:23:46,699 INFO L432 AbstractCegarLoop]: Abstraction has 108 states and 117 transitions. [2018-01-25 06:23:46,699 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 06:23:46,700 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 117 transitions. [2018-01-25 06:23:46,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-01-25 06:23:46,700 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 06:23:46,700 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 06:23:46,701 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr46EnsuresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 06:23:46,701 INFO L82 PathProgramCache]: Analyzing trace with hash -1176954997, now seen corresponding path program 1 times [2018-01-25 06:23:46,701 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 06:23:46,703 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:23:46,703 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 06:23:46,703 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:23:46,703 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 06:23:46,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 06:23:46,719 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 06:23:46,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 06:23:46,820 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 06:23:46,820 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-25 06:23:46,821 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 06:23:46,821 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-25 06:23:46,821 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-25 06:23:46,821 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-01-25 06:23:46,821 INFO L87 Difference]: Start difference. First operand 108 states and 117 transitions. Second operand 7 states. [2018-01-25 06:23:47,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 06:23:47,068 INFO L93 Difference]: Finished difference Result 145 states and 155 transitions. [2018-01-25 06:23:47,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 06:23:47,069 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2018-01-25 06:23:47,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 06:23:47,070 INFO L225 Difference]: With dead ends: 145 [2018-01-25 06:23:47,070 INFO L226 Difference]: Without dead ends: 139 [2018-01-25 06:23:47,071 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-01-25 06:23:47,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-01-25 06:23:47,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 116. [2018-01-25 06:23:47,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2018-01-25 06:23:47,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 126 transitions. [2018-01-25 06:23:47,082 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 126 transitions. Word has length 15 [2018-01-25 06:23:47,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 06:23:47,082 INFO L432 AbstractCegarLoop]: Abstraction has 116 states and 126 transitions. [2018-01-25 06:23:47,082 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-25 06:23:47,082 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 126 transitions. [2018-01-25 06:23:47,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-25 06:23:47,083 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 06:23:47,083 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 06:23:47,084 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr46EnsuresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 06:23:47,084 INFO L82 PathProgramCache]: Analyzing trace with hash 1446653265, now seen corresponding path program 1 times [2018-01-25 06:23:47,084 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 06:23:47,086 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:23:47,086 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 06:23:47,086 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:23:47,086 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 06:23:47,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 06:23:47,101 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 06:23:47,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 06:23:47,148 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 06:23:47,148 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-25 06:23:47,149 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 06:23:47,149 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-25 06:23:47,149 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-25 06:23:47,149 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-25 06:23:47,150 INFO L87 Difference]: Start difference. First operand 116 states and 126 transitions. Second operand 6 states. [2018-01-25 06:23:47,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 06:23:47,395 INFO L93 Difference]: Finished difference Result 186 states and 203 transitions. [2018-01-25 06:23:47,395 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-25 06:23:47,396 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2018-01-25 06:23:47,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 06:23:47,397 INFO L225 Difference]: With dead ends: 186 [2018-01-25 06:23:47,397 INFO L226 Difference]: Without dead ends: 185 [2018-01-25 06:23:47,397 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-01-25 06:23:47,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2018-01-25 06:23:47,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 115. [2018-01-25 06:23:47,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-01-25 06:23:47,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 125 transitions. [2018-01-25 06:23:47,408 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 125 transitions. Word has length 18 [2018-01-25 06:23:47,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 06:23:47,408 INFO L432 AbstractCegarLoop]: Abstraction has 115 states and 125 transitions. [2018-01-25 06:23:47,408 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-25 06:23:47,408 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 125 transitions. [2018-01-25 06:23:47,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-25 06:23:47,409 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 06:23:47,409 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 06:23:47,409 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr46EnsuresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 06:23:47,409 INFO L82 PathProgramCache]: Analyzing trace with hash 1446653266, now seen corresponding path program 1 times [2018-01-25 06:23:47,410 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 06:23:47,411 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:23:47,411 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 06:23:47,411 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:23:47,411 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 06:23:47,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 06:23:47,425 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 06:23:47,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 06:23:47,563 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 06:23:47,563 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-25 06:23:47,563 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 06:23:47,563 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-25 06:23:47,563 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-25 06:23:47,563 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-25 06:23:47,564 INFO L87 Difference]: Start difference. First operand 115 states and 125 transitions. Second operand 6 states. [2018-01-25 06:23:47,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 06:23:47,796 INFO L93 Difference]: Finished difference Result 196 states and 214 transitions. [2018-01-25 06:23:47,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-25 06:23:47,796 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2018-01-25 06:23:47,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 06:23:47,797 INFO L225 Difference]: With dead ends: 196 [2018-01-25 06:23:47,797 INFO L226 Difference]: Without dead ends: 189 [2018-01-25 06:23:47,797 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2018-01-25 06:23:47,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2018-01-25 06:23:47,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 110. [2018-01-25 06:23:47,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2018-01-25 06:23:47,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 120 transitions. [2018-01-25 06:23:47,805 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 120 transitions. Word has length 18 [2018-01-25 06:23:47,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 06:23:47,805 INFO L432 AbstractCegarLoop]: Abstraction has 110 states and 120 transitions. [2018-01-25 06:23:47,806 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-25 06:23:47,806 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 120 transitions. [2018-01-25 06:23:47,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-01-25 06:23:47,806 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 06:23:47,806 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] [2018-01-25 06:23:47,807 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr46EnsuresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 06:23:47,807 INFO L82 PathProgramCache]: Analyzing trace with hash -1020537408, now seen corresponding path program 1 times [2018-01-25 06:23:47,807 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 06:23:47,808 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:23:47,808 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 06:23:47,808 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:23:47,808 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 06:23:47,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 06:23:47,823 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 06:23:47,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 06:23:47,868 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 06:23:47,868 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-25 06:23:47,868 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 06:23:47,869 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-25 06:23:47,869 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-25 06:23:47,869 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-25 06:23:47,869 INFO L87 Difference]: Start difference. First operand 110 states and 120 transitions. Second operand 6 states. [2018-01-25 06:23:48,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 06:23:48,078 INFO L93 Difference]: Finished difference Result 199 states and 219 transitions. [2018-01-25 06:23:48,078 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-25 06:23:48,078 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2018-01-25 06:23:48,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 06:23:48,079 INFO L225 Difference]: With dead ends: 199 [2018-01-25 06:23:48,079 INFO L226 Difference]: Without dead ends: 198 [2018-01-25 06:23:48,080 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-01-25 06:23:48,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2018-01-25 06:23:48,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 109. [2018-01-25 06:23:48,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-01-25 06:23:48,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 119 transitions. [2018-01-25 06:23:48,088 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 119 transitions. Word has length 26 [2018-01-25 06:23:48,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 06:23:48,088 INFO L432 AbstractCegarLoop]: Abstraction has 109 states and 119 transitions. [2018-01-25 06:23:48,088 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-25 06:23:48,089 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 119 transitions. [2018-01-25 06:23:48,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-01-25 06:23:48,089 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 06:23:48,090 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] [2018-01-25 06:23:48,090 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr46EnsuresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 06:23:48,090 INFO L82 PathProgramCache]: Analyzing trace with hash -1020537407, now seen corresponding path program 1 times [2018-01-25 06:23:48,090 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 06:23:48,091 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:23:48,091 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 06:23:48,091 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:23:48,091 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 06:23:48,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 06:23:48,107 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 06:23:48,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 06:23:48,218 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 06:23:48,218 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-25 06:23:48,219 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 06:23:48,219 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-25 06:23:48,219 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-25 06:23:48,219 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-25 06:23:48,220 INFO L87 Difference]: Start difference. First operand 109 states and 119 transitions. Second operand 6 states. [2018-01-25 06:23:48,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 06:23:48,450 INFO L93 Difference]: Finished difference Result 195 states and 214 transitions. [2018-01-25 06:23:48,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 06:23:48,450 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2018-01-25 06:23:48,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 06:23:48,452 INFO L225 Difference]: With dead ends: 195 [2018-01-25 06:23:48,452 INFO L226 Difference]: Without dead ends: 191 [2018-01-25 06:23:48,453 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-01-25 06:23:48,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-01-25 06:23:48,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 99. [2018-01-25 06:23:48,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-01-25 06:23:48,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 108 transitions. [2018-01-25 06:23:48,460 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 108 transitions. Word has length 26 [2018-01-25 06:23:48,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 06:23:48,460 INFO L432 AbstractCegarLoop]: Abstraction has 99 states and 108 transitions. [2018-01-25 06:23:48,460 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-25 06:23:48,461 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 108 transitions. [2018-01-25 06:23:48,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-01-25 06:23:48,461 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 06:23:48,462 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 06:23:48,462 INFO L371 AbstractCegarLoop]: === Iteration 9 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr46EnsuresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 06:23:48,462 INFO L82 PathProgramCache]: Analyzing trace with hash -1179857763, now seen corresponding path program 1 times [2018-01-25 06:23:48,462 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 06:23:48,463 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:23:48,464 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 06:23:48,464 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:23:48,464 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 06:23:48,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 06:23:48,473 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 06:23:48,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 06:23:48,503 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 06:23:48,504 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-25 06:23:48,504 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 06:23:48,504 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 06:23:48,504 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 06:23:48,505 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 06:23:48,505 INFO L87 Difference]: Start difference. First operand 99 states and 108 transitions. Second operand 5 states. [2018-01-25 06:23:48,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 06:23:48,632 INFO L93 Difference]: Finished difference Result 150 states and 163 transitions. [2018-01-25 06:23:48,671 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 06:23:48,671 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2018-01-25 06:23:48,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 06:23:48,673 INFO L225 Difference]: With dead ends: 150 [2018-01-25 06:23:48,673 INFO L226 Difference]: Without dead ends: 114 [2018-01-25 06:23:48,673 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-25 06:23:48,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2018-01-25 06:23:48,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 99. [2018-01-25 06:23:48,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-01-25 06:23:48,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 106 transitions. [2018-01-25 06:23:48,680 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 106 transitions. Word has length 27 [2018-01-25 06:23:48,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 06:23:48,680 INFO L432 AbstractCegarLoop]: Abstraction has 99 states and 106 transitions. [2018-01-25 06:23:48,680 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 06:23:48,680 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 106 transitions. [2018-01-25 06:23:48,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-25 06:23:48,681 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 06:23:48,681 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] [2018-01-25 06:23:48,681 INFO L371 AbstractCegarLoop]: === Iteration 10 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr46EnsuresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 06:23:48,682 INFO L82 PathProgramCache]: Analyzing trace with hash -2127198597, now seen corresponding path program 1 times [2018-01-25 06:23:48,682 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 06:23:48,683 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:23:48,683 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 06:23:48,683 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:23:48,683 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 06:23:48,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 06:23:48,694 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 06:23:48,794 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 06:23:48,794 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-25 06:23:48,794 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-25 06:23:48,795 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 31 with the following transitions: [2018-01-25 06:23:48,797 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [12], [14], [17], [61], [65], [70], [74], [82], [83], [90], [94], [102], [108], [109], [110], [158], [160], [163], [213], [214], [218], [219], [220] [2018-01-25 06:23:48,859 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-25 06:23:48,859 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