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/dll-optional_true-unreach-call_true-valid-memsafety.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-25 06:17:38,747 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-25 06:17:38,748 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-25 06:17:38,760 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-25 06:17:38,760 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-25 06:17:38,761 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-25 06:17:38,762 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-25 06:17:38,763 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-25 06:17:38,765 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-25 06:17:38,765 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-25 06:17:38,766 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-25 06:17:38,766 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-25 06:17:38,767 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-25 06:17:38,768 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-25 06:17:38,769 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-25 06:17:38,771 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-25 06:17:38,773 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-25 06:17:38,775 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-25 06:17:38,777 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-25 06:17:38,778 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-25 06:17:38,780 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-25 06:17:38,780 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-25 06:17:38,781 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-25 06:17:38,782 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-25 06:17:38,782 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-25 06:17:38,784 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-25 06:17:38,784 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-25 06:17:38,785 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-25 06:17:38,785 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-25 06:17:38,785 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-25 06:17:38,786 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-25 06:17:38,786 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 06:17:38,795 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-25 06:17:38,795 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-25 06:17:38,796 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-25 06:17:38,796 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-25 06:17:38,796 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-25 06:17:38,797 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-25 06:17:38,797 INFO L133 SettingsManager]: * Precise comparison operator=true [2018-01-25 06:17:38,797 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-25 06:17:38,797 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-25 06:17:38,797 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-25 06:17:38,798 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-25 06:17:38,798 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-25 06:17:38,798 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-25 06:17:38,798 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-25 06:17:38,798 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-25 06:17:38,798 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-25 06:17:38,798 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-25 06:17:38,798 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-25 06:17:38,799 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-25 06:17:38,799 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-25 06:17:38,799 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-25 06:17:38,799 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-25 06:17:38,799 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-25 06:17:38,799 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-25 06:17:38,800 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-25 06:17:38,800 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-25 06:17:38,800 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-25 06:17:38,800 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-25 06:17:38,800 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-25 06:17:38,800 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-25 06:17:38,801 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-25 06:17:38,801 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-25 06:17:38,801 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-25 06:17:38,801 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-25 06:17:38,802 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-25 06:17:38,802 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-25 06:17:38,834 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-25 06:17:38,844 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-25 06:17:38,847 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-25 06:17:38,848 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-25 06:17:38,849 INFO L276 PluginConnector]: CDTParser initialized [2018-01-25 06:17:38,849 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-optional_true-unreach-call_true-valid-memsafety.i [2018-01-25 06:17:39,006 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-25 06:17:39,012 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-25 06:17:39,012 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-25 06:17:39,013 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-25 06:17:39,018 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-25 06:17:39,019 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 06:17:38" (1/1) ... [2018-01-25 06:17:39,022 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@428be157 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 06:17:39, skipping insertion in model container [2018-01-25 06:17:39,022 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 06:17:38" (1/1) ... [2018-01-25 06:17:39,036 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 06:17:39,074 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 06:17:39,199 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 06:17:39,223 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 06:17:39,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 06:17:39 WrapperNode [2018-01-25 06:17:39,234 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-25 06:17:39,235 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-25 06:17:39,235 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-25 06:17:39,235 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-25 06:17:39,250 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 06:17:39" (1/1) ... [2018-01-25 06:17:39,250 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 06:17:39" (1/1) ... [2018-01-25 06:17:39,260 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 06:17:39" (1/1) ... [2018-01-25 06:17:39,260 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 06:17:39" (1/1) ... [2018-01-25 06:17:39,269 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 06:17:39" (1/1) ... [2018-01-25 06:17:39,274 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 06:17:39" (1/1) ... [2018-01-25 06:17:39,276 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 06:17:39" (1/1) ... [2018-01-25 06:17:39,278 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-25 06:17:39,279 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-25 06:17:39,279 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-25 06:17:39,279 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-25 06:17:39,280 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 06:17:39" (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 06:17:39,329 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-25 06:17:39,329 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-25 06:17:39,329 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-25 06:17:39,329 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-25 06:17:39,329 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-25 06:17:39,330 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-25 06:17:39,330 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-25 06:17:39,330 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-25 06:17:39,330 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-25 06:17:39,330 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-25 06:17:39,330 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-25 06:17:39,330 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-25 06:17:39,330 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-25 06:17:39,330 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-25 06:17:39,331 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-25 06:17:39,331 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-25 06:17:39,331 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-25 06:17:39,852 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-25 06:17:39,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 06:17:39 BoogieIcfgContainer [2018-01-25 06:17:39,853 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-25 06:17:39,854 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-25 06:17:39,854 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-25 06:17:39,857 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-25 06:17:39,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.01 06:17:38" (1/3) ... [2018-01-25 06:17:39,858 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49e728a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 06:17:39, skipping insertion in model container [2018-01-25 06:17:39,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 06:17:39" (2/3) ... [2018-01-25 06:17:39,859 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49e728a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 06:17:39, skipping insertion in model container [2018-01-25 06:17:39,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 06:17:39" (3/3) ... [2018-01-25 06:17:39,861 INFO L105 eAbstractionObserver]: Analyzing ICFG dll-optional_true-unreach-call_true-valid-memsafety.i [2018-01-25 06:17:39,870 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-25 06:17:39,878 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 69 error locations. [2018-01-25 06:17:39,930 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-25 06:17:39,930 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-25 06:17:39,930 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-25 06:17:39,930 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-25 06:17:39,931 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-25 06:17:39,931 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-25 06:17:39,931 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-25 06:17:39,931 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-25 06:17:39,932 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-25 06:17:39,957 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states. [2018-01-25 06:17:39,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-25 06:17:39,964 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 06:17:39,965 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 06:17:39,966 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 06:17:39,971 INFO L82 PathProgramCache]: Analyzing trace with hash 1266701268, now seen corresponding path program 1 times [2018-01-25 06:17:39,974 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 06:17:40,035 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:17:40,035 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 06:17:40,035 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:17:40,036 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 06:17:40,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 06:17:40,077 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 06:17:40,143 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 06:17:40,145 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 06:17:40,145 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 06:17:40,145 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 06:17:40,148 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 06:17:40,158 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 06:17:40,158 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 06:17:40,160 INFO L87 Difference]: Start difference. First operand 154 states. Second operand 4 states. [2018-01-25 06:17:40,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 06:17:40,470 INFO L93 Difference]: Finished difference Result 237 states and 270 transitions. [2018-01-25 06:17:40,471 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 06:17:40,472 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-25 06:17:40,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 06:17:40,483 INFO L225 Difference]: With dead ends: 237 [2018-01-25 06:17:40,484 INFO L226 Difference]: Without dead ends: 163 [2018-01-25 06:17:40,487 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 06:17:40,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-01-25 06:17:40,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 142. [2018-01-25 06:17:40,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2018-01-25 06:17:40,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 153 transitions. [2018-01-25 06:17:40,528 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 153 transitions. Word has length 8 [2018-01-25 06:17:40,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 06:17:40,529 INFO L432 AbstractCegarLoop]: Abstraction has 142 states and 153 transitions. [2018-01-25 06:17:40,529 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 06:17:40,529 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 153 transitions. [2018-01-25 06:17:40,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-25 06:17:40,529 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 06:17:40,529 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 06:17:40,530 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 06:17:40,530 INFO L82 PathProgramCache]: Analyzing trace with hash 1266701269, now seen corresponding path program 1 times [2018-01-25 06:17:40,530 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 06:17:40,531 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:17:40,531 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 06:17:40,531 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:17:40,532 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 06:17:40,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 06:17:40,547 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 06:17:40,608 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 06:17:40,608 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 06:17:40,608 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 06:17:40,609 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 06:17:40,610 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 06:17:40,611 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 06:17:40,611 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 06:17:40,611 INFO L87 Difference]: Start difference. First operand 142 states and 153 transitions. Second operand 4 states. [2018-01-25 06:17:40,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 06:17:40,851 INFO L93 Difference]: Finished difference Result 147 states and 158 transitions. [2018-01-25 06:17:40,851 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-25 06:17:40,851 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-25 06:17:40,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 06:17:40,853 INFO L225 Difference]: With dead ends: 147 [2018-01-25 06:17:40,853 INFO L226 Difference]: Without dead ends: 138 [2018-01-25 06:17:40,854 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 06:17:40,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-01-25 06:17:40,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 133. [2018-01-25 06:17:40,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-01-25 06:17:40,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 144 transitions. [2018-01-25 06:17:40,866 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 144 transitions. Word has length 8 [2018-01-25 06:17:40,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 06:17:40,866 INFO L432 AbstractCegarLoop]: Abstraction has 133 states and 144 transitions. [2018-01-25 06:17:40,866 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 06:17:40,867 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 144 transitions. [2018-01-25 06:17:40,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-01-25 06:17:40,867 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 06:17:40,868 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 06:17:40,868 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 06:17:40,868 INFO L82 PathProgramCache]: Analyzing trace with hash -235797476, now seen corresponding path program 1 times [2018-01-25 06:17:40,868 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 06:17:40,870 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:17:40,870 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 06:17:40,870 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:17:40,870 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 06:17:40,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 06:17:40,895 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 06:17:40,946 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 06:17:40,946 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 06:17:40,947 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 06:17:40,947 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 06:17:40,947 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 06:17:40,947 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 06:17:40,948 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 06:17:40,948 INFO L87 Difference]: Start difference. First operand 133 states and 144 transitions. Second operand 5 states. [2018-01-25 06:17:41,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 06:17:41,322 INFO L93 Difference]: Finished difference Result 286 states and 310 transitions. [2018-01-25 06:17:41,322 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-25 06:17:41,322 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2018-01-25 06:17:41,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 06:17:41,325 INFO L225 Difference]: With dead ends: 286 [2018-01-25 06:17:41,325 INFO L226 Difference]: Without dead ends: 285 [2018-01-25 06:17:41,325 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-25 06:17:41,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2018-01-25 06:17:41,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 132. [2018-01-25 06:17:41,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2018-01-25 06:17:41,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 143 transitions. [2018-01-25 06:17:41,337 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 143 transitions. Word has length 16 [2018-01-25 06:17:41,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 06:17:41,338 INFO L432 AbstractCegarLoop]: Abstraction has 132 states and 143 transitions. [2018-01-25 06:17:41,338 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 06:17:41,338 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 143 transitions. [2018-01-25 06:17:41,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-01-25 06:17:41,339 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 06:17:41,339 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 06:17:41,339 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 06:17:41,340 INFO L82 PathProgramCache]: Analyzing trace with hash -235797475, now seen corresponding path program 1 times [2018-01-25 06:17:41,340 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 06:17:41,341 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:17:41,341 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 06:17:41,341 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:17:41,341 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 06:17:41,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 06:17:41,365 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 06:17:41,449 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 06:17:41,450 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 06:17:41,450 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 06:17:41,450 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 06:17:41,450 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 06:17:41,451 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 06:17:41,451 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 06:17:41,451 INFO L87 Difference]: Start difference. First operand 132 states and 143 transitions. Second operand 5 states. [2018-01-25 06:17:41,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 06:17:41,797 INFO L93 Difference]: Finished difference Result 241 states and 261 transitions. [2018-01-25 06:17:41,797 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 06:17:41,797 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2018-01-25 06:17:41,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 06:17:41,798 INFO L225 Difference]: With dead ends: 241 [2018-01-25 06:17:41,799 INFO L226 Difference]: Without dead ends: 240 [2018-01-25 06:17:41,799 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-25 06:17:41,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2018-01-25 06:17:41,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 131. [2018-01-25 06:17:41,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-01-25 06:17:41,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 142 transitions. [2018-01-25 06:17:41,809 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 142 transitions. Word has length 16 [2018-01-25 06:17:41,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 06:17:41,810 INFO L432 AbstractCegarLoop]: Abstraction has 131 states and 142 transitions. [2018-01-25 06:17:41,810 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 06:17:41,810 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 142 transitions. [2018-01-25 06:17:41,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-01-25 06:17:41,811 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 06:17:41,811 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] [2018-01-25 06:17:41,811 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 06:17:41,811 INFO L82 PathProgramCache]: Analyzing trace with hash -2104820849, now seen corresponding path program 1 times [2018-01-25 06:17:41,812 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 06:17:41,813 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:17:41,813 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 06:17:41,813 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:17:41,813 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 06:17:41,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 06:17:41,833 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 06:17:41,891 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 06:17:41,892 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 06:17:41,892 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 06:17:41,892 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 06:17:41,893 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 06:17:41,893 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 06:17:41,893 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 06:17:41,893 INFO L87 Difference]: Start difference. First operand 131 states and 142 transitions. Second operand 4 states. [2018-01-25 06:17:42,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 06:17:42,067 INFO L93 Difference]: Finished difference Result 151 states and 162 transitions. [2018-01-25 06:17:42,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 06:17:42,068 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2018-01-25 06:17:42,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 06:17:42,069 INFO L225 Difference]: With dead ends: 151 [2018-01-25 06:17:42,069 INFO L226 Difference]: Without dead ends: 134 [2018-01-25 06:17:42,069 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 06:17:42,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2018-01-25 06:17:42,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 126. [2018-01-25 06:17:42,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2018-01-25 06:17:42,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 142 transitions. [2018-01-25 06:17:42,079 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 142 transitions. Word has length 20 [2018-01-25 06:17:42,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 06:17:42,080 INFO L432 AbstractCegarLoop]: Abstraction has 126 states and 142 transitions. [2018-01-25 06:17:42,080 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 06:17:42,080 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 142 transitions. [2018-01-25 06:17:42,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-01-25 06:17:42,081 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 06:17:42,081 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] [2018-01-25 06:17:42,081 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 06:17:42,081 INFO L82 PathProgramCache]: Analyzing trace with hash -2104820848, now seen corresponding path program 1 times [2018-01-25 06:17:42,081 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 06:17:42,082 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:17:42,082 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 06:17:42,082 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:17:42,082 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 06:17:42,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 06:17:42,098 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 06:17:42,178 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 06:17:42,178 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 06:17:42,178 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-25 06:17:42,178 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 06:17:42,179 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-25 06:17:42,179 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-25 06:17:42,179 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-01-25 06:17:42,179 INFO L87 Difference]: Start difference. First operand 126 states and 142 transitions. Second operand 7 states. [2018-01-25 06:17:42,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 06:17:42,396 INFO L93 Difference]: Finished difference Result 188 states and 206 transitions. [2018-01-25 06:17:42,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 06:17:42,396 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2018-01-25 06:17:42,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 06:17:42,397 INFO L225 Difference]: With dead ends: 188 [2018-01-25 06:17:42,397 INFO L226 Difference]: Without dead ends: 176 [2018-01-25 06:17:42,398 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 06:17:42,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2018-01-25 06:17:42,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 157. [2018-01-25 06:17:42,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-01-25 06:17:42,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 182 transitions. [2018-01-25 06:17:42,408 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 182 transitions. Word has length 20 [2018-01-25 06:17:42,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 06:17:42,408 INFO L432 AbstractCegarLoop]: Abstraction has 157 states and 182 transitions. [2018-01-25 06:17:42,409 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-25 06:17:42,409 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 182 transitions. [2018-01-25 06:17:42,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-25 06:17:42,409 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 06:17:42,410 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 06:17:42,410 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 06:17:42,410 INFO L82 PathProgramCache]: Analyzing trace with hash 196761554, now seen corresponding path program 1 times [2018-01-25 06:17:42,410 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 06:17:42,411 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:17:42,411 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 06:17:42,411 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:17:42,411 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 06:17:42,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 06:17:42,425 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 06:17:42,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 06:17:42,472 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 06:17:42,473 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 06:17:42,473 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 06:17:42,473 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 06:17:42,473 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 06:17:42,473 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 06:17:42,474 INFO L87 Difference]: Start difference. First operand 157 states and 182 transitions. Second operand 5 states. [2018-01-25 06:17:42,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 06:17:42,752 INFO L93 Difference]: Finished difference Result 222 states and 258 transitions. [2018-01-25 06:17:42,753 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 06:17:42,753 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2018-01-25 06:17:42,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 06:17:42,754 INFO L225 Difference]: With dead ends: 222 [2018-01-25 06:17:42,754 INFO L226 Difference]: Without dead ends: 221 [2018-01-25 06:17:42,755 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-25 06:17:42,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2018-01-25 06:17:42,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 156. [2018-01-25 06:17:42,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2018-01-25 06:17:42,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 180 transitions. [2018-01-25 06:17:42,762 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 180 transitions. Word has length 22 [2018-01-25 06:17:42,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 06:17:42,763 INFO L432 AbstractCegarLoop]: Abstraction has 156 states and 180 transitions. [2018-01-25 06:17:42,763 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 06:17:42,763 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 180 transitions. [2018-01-25 06:17:42,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-25 06:17:42,763 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 06:17:42,764 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 06:17:42,764 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 06:17:42,764 INFO L82 PathProgramCache]: Analyzing trace with hash 196761555, now seen corresponding path program 1 times [2018-01-25 06:17:42,764 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 06:17:42,765 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:17:42,765 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 06:17:42,765 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:17:42,765 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 06:17:42,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 06:17:42,777 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 06:17:42,829 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 06:17:42,830 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 06:17:42,830 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 06:17:42,830 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 06:17:42,830 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 06:17:42,830 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 06:17:42,830 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 06:17:42,831 INFO L87 Difference]: Start difference. First operand 156 states and 180 transitions. Second operand 5 states. [2018-01-25 06:17:43,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 06:17:43,226 INFO L93 Difference]: Finished difference Result 241 states and 282 transitions. [2018-01-25 06:17:43,226 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 06:17:43,226 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2018-01-25 06:17:43,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 06:17:43,228 INFO L225 Difference]: With dead ends: 241 [2018-01-25 06:17:43,228 INFO L226 Difference]: Without dead ends: 240 [2018-01-25 06:17:43,229 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-25 06:17:43,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2018-01-25 06:17:43,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 155. [2018-01-25 06:17:43,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-01-25 06:17:43,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 178 transitions. [2018-01-25 06:17:43,240 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 178 transitions. Word has length 22 [2018-01-25 06:17:43,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 06:17:43,241 INFO L432 AbstractCegarLoop]: Abstraction has 155 states and 178 transitions. [2018-01-25 06:17:43,241 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 06:17:43,241 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 178 transitions. [2018-01-25 06:17:43,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-01-25 06:17:43,242 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 06:17:43,242 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 06:17:43,242 INFO L371 AbstractCegarLoop]: === Iteration 9 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 06:17:43,242 INFO L82 PathProgramCache]: Analyzing trace with hash 2133980856, now seen corresponding path program 1 times [2018-01-25 06:17:43,242 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 06:17:43,243 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:17:43,243 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 06:17:43,244 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:17:43,244 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 06:17:43,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 06:17:43,255 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 06:17:43,288 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 06:17:43,289 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 06:17:43,289 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-25 06:17:43,289 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 06:17:43,289 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 06:17:43,290 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 06:17:43,290 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 06:17:43,290 INFO L87 Difference]: Start difference. First operand 155 states and 178 transitions. Second operand 5 states. [2018-01-25 06:17:43,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 06:17:43,436 INFO L93 Difference]: Finished difference Result 202 states and 228 transitions. [2018-01-25 06:17:43,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 06:17:43,436 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2018-01-25 06:17:43,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 06:17:43,437 INFO L225 Difference]: With dead ends: 202 [2018-01-25 06:17:43,438 INFO L226 Difference]: Without dead ends: 167 [2018-01-25 06:17:43,438 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 06:17:43,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-01-25 06:17:43,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 155. [2018-01-25 06:17:43,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-01-25 06:17:43,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 176 transitions. [2018-01-25 06:17:43,450 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 176 transitions. Word has length 26 [2018-01-25 06:17:43,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 06:17:43,450 INFO L432 AbstractCegarLoop]: Abstraction has 155 states and 176 transitions. [2018-01-25 06:17:43,450 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 06:17:43,450 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 176 transitions. [2018-01-25 06:17:43,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-01-25 06:17:43,451 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 06:17:43,451 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 06:17:43,451 INFO L371 AbstractCegarLoop]: === Iteration 10 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 06:17:43,452 INFO L82 PathProgramCache]: Analyzing trace with hash 1951923348, now seen corresponding path program 1 times [2018-01-25 06:17:43,452 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 06:17:43,453 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:17:43,453 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 06:17:43,453 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:17:43,453 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 06:17:43,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 06:17:43,469 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 06:17:43,562 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 06:17:43,562 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 06:17:43,562 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-25 06:17:43,562 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 06:17:43,563 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-25 06:17:43,563 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-25 06:17:43,563 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-01-25 06:17:43,563 INFO L87 Difference]: Start difference. First operand 155 states and 176 transitions. Second operand 9 states. [2018-01-25 06:17:43,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 06:17:43,993 INFO L93 Difference]: Finished difference Result 156 states and 176 transitions. [2018-01-25 06:17:43,993 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-25 06:17:43,994 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2018-01-25 06:17:43,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 06:17:43,994 INFO L225 Difference]: With dead ends: 156 [2018-01-25 06:17:43,995 INFO L226 Difference]: Without dead ends: 155 [2018-01-25 06:17:43,995 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2018-01-25 06:17:43,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2018-01-25 06:17:44,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 154. [2018-01-25 06:17:44,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2018-01-25 06:17:44,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 175 transitions. [2018-01-25 06:17:44,003 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 175 transitions. Word has length 26 [2018-01-25 06:17:44,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 06:17:44,003 INFO L432 AbstractCegarLoop]: Abstraction has 154 states and 175 transitions. [2018-01-25 06:17:44,003 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-25 06:17:44,004 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 175 transitions. [2018-01-25 06:17:44,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-01-25 06:17:44,005 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 06:17:44,005 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 06:17:44,005 INFO L371 AbstractCegarLoop]: === Iteration 11 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 06:17:44,006 INFO L82 PathProgramCache]: Analyzing trace with hash 1951923349, now seen corresponding path program 1 times [2018-01-25 06:17:44,006 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 06:17:44,007 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:17:44,007 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 06:17:44,007 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:17:44,007 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 06:17:44,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 06:17:44,023 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 06:17:44,185 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 06:17:44,185 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 06:17:44,186 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-01-25 06:17:44,186 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 06:17:44,186 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-25 06:17:44,186 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-25 06:17:44,187 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-01-25 06:17:44,189 INFO L87 Difference]: Start difference. First operand 154 states and 175 transitions. Second operand 10 states. [2018-01-25 06:17:44,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 06:17:44,943 INFO L93 Difference]: Finished difference Result 157 states and 177 transitions. [2018-01-25 06:17:44,943 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-25 06:17:44,943 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 26 [2018-01-25 06:17:44,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 06:17:44,944 INFO L225 Difference]: With dead ends: 157 [2018-01-25 06:17:44,944 INFO L226 Difference]: Without dead ends: 146 [2018-01-25 06:17:44,945 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=129, Invalid=291, Unknown=0, NotChecked=0, Total=420 [2018-01-25 06:17:44,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-01-25 06:17:44,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 134. [2018-01-25 06:17:44,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2018-01-25 06:17:44,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 154 transitions. [2018-01-25 06:17:44,952 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 154 transitions. Word has length 26 [2018-01-25 06:17:44,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 06:17:44,953 INFO L432 AbstractCegarLoop]: Abstraction has 134 states and 154 transitions. [2018-01-25 06:17:44,953 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-25 06:17:44,953 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 154 transitions. [2018-01-25 06:17:44,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-25 06:17:44,953 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 06:17:44,954 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] [2018-01-25 06:17:44,954 INFO L371 AbstractCegarLoop]: === Iteration 12 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 06:17:44,954 INFO L82 PathProgramCache]: Analyzing trace with hash -1846863039, now seen corresponding path program 1 times [2018-01-25 06:17:44,954 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 06:17:44,955 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:17:44,955 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 06:17:44,955 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:17:44,955 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 06:17:44,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 06:17:44,967 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 06:17:44,988 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 06:17:44,989 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 06:17:44,989 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 06:17:44,989 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 06:17:44,989 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 06:17:44,989 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 06:17:44,990 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 06:17:44,990 INFO L87 Difference]: Start difference. First operand 134 states and 154 transitions. Second operand 4 states. [2018-01-25 06:17:45,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 06:17:45,030 INFO L93 Difference]: Finished difference Result 234 states and 273 transitions. [2018-01-25 06:17:45,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 06:17:45,031 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2018-01-25 06:17:45,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 06:17:45,031 INFO L225 Difference]: With dead ends: 234 [2018-01-25 06:17:45,032 INFO L226 Difference]: Without dead ends: 160 [2018-01-25 06:17:45,032 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 06:17:45,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2018-01-25 06:17:45,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 138. [2018-01-25 06:17:45,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2018-01-25 06:17:45,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 158 transitions. [2018-01-25 06:17:45,039 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 158 transitions. Word has length 29 [2018-01-25 06:17:45,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 06:17:45,040 INFO L432 AbstractCegarLoop]: Abstraction has 138 states and 158 transitions. [2018-01-25 06:17:45,040 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 06:17:45,040 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 158 transitions. [2018-01-25 06:17:45,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-01-25 06:17:45,041 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 06:17:45,041 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 06:17:45,041 INFO L371 AbstractCegarLoop]: === Iteration 13 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 06:17:45,041 INFO L82 PathProgramCache]: Analyzing trace with hash 2044037406, now seen corresponding path program 1 times [2018-01-25 06:17:45,042 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 06:17:45,042 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:17:45,043 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 06:17:45,043 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:17:45,043 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 06:17:45,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 06:17:45,055 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 06:17:45,303 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 06:17:45,303 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 06:17:45,303 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-01-25 06:17:45,303 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 06:17:45,303 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-25 06:17:45,304 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-25 06:17:45,304 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-01-25 06:17:45,304 INFO L87 Difference]: Start difference. First operand 138 states and 158 transitions. Second operand 8 states. [2018-01-25 06:17:45,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 06:17:45,644 INFO L93 Difference]: Finished difference Result 252 states and 286 transitions. [2018-01-25 06:17:45,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-25 06:17:45,645 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2018-01-25 06:17:45,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 06:17:45,646 INFO L225 Difference]: With dead ends: 252 [2018-01-25 06:17:45,646 INFO L226 Difference]: Without dead ends: 251 [2018-01-25 06:17:45,647 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2018-01-25 06:17:45,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2018-01-25 06:17:45,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 155. [2018-01-25 06:17:45,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-01-25 06:17:45,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 179 transitions. [2018-01-25 06:17:45,658 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 179 transitions. Word has length 31 [2018-01-25 06:17:45,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 06:17:45,659 INFO L432 AbstractCegarLoop]: Abstraction has 155 states and 179 transitions. [2018-01-25 06:17:45,659 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-25 06:17:45,659 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 179 transitions. [2018-01-25 06:17:45,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-01-25 06:17:45,660 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 06:17:45,660 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 06:17:45,660 INFO L371 AbstractCegarLoop]: === Iteration 14 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 06:17:45,661 INFO L82 PathProgramCache]: Analyzing trace with hash 2044037407, now seen corresponding path program 1 times [2018-01-25 06:17:45,661 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 06:17:45,661 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:17:45,662 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 06:17:45,662 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:17:45,662 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 06:17:45,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 06:17:45,673 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 06:17:45,788 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 06:17:45,788 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 06:17:45,789 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-01-25 06:17:45,789 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 06:17:45,789 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-25 06:17:45,789 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-25 06:17:45,790 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-01-25 06:17:45,790 INFO L87 Difference]: Start difference. First operand 155 states and 179 transitions. Second operand 7 states. [2018-01-25 06:17:46,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 06:17:46,160 INFO L93 Difference]: Finished difference Result 342 states and 391 transitions. [2018-01-25 06:17:46,161 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-01-25 06:17:46,161 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 31 [2018-01-25 06:17:46,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 06:17:46,162 INFO L225 Difference]: With dead ends: 342 [2018-01-25 06:17:46,162 INFO L226 Difference]: Without dead ends: 266 [2018-01-25 06:17:46,163 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2018-01-25 06:17:46,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2018-01-25 06:17:46,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 151. [2018-01-25 06:17:46,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-01-25 06:17:46,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 173 transitions. [2018-01-25 06:17:46,171 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 173 transitions. Word has length 31 [2018-01-25 06:17:46,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 06:17:46,171 INFO L432 AbstractCegarLoop]: Abstraction has 151 states and 173 transitions. [2018-01-25 06:17:46,171 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-25 06:17:46,171 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 173 transitions. [2018-01-25 06:17:46,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-01-25 06:17:46,172 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 06:17:46,172 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 06:17:46,172 INFO L371 AbstractCegarLoop]: === Iteration 15 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 06:17:46,172 INFO L82 PathProgramCache]: Analyzing trace with hash -638053953, now seen corresponding path program 1 times [2018-01-25 06:17:46,173 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 06:17:46,173 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:17:46,173 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 06:17:46,173 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:17:46,173 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 06:17:46,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 06:17:46,185 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 06:17:46,232 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 06:17:46,232 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 06:17:46,232 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 06:17:46,232 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 06:17:46,232 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 06:17:46,233 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 06:17:46,233 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 06:17:46,233 INFO L87 Difference]: Start difference. First operand 151 states and 173 transitions. Second operand 5 states. [2018-01-25 06:17:46,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 06:17:46,773 INFO L93 Difference]: Finished difference Result 259 states and 296 transitions. [2018-01-25 06:17:46,773 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-25 06:17:46,774 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2018-01-25 06:17:46,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 06:17:46,775 INFO L225 Difference]: With dead ends: 259 [2018-01-25 06:17:46,775 INFO L226 Difference]: Without dead ends: 258 [2018-01-25 06:17:46,775 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-25 06:17:46,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2018-01-25 06:17:46,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 150. [2018-01-25 06:17:46,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2018-01-25 06:17:46,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 172 transitions. [2018-01-25 06:17:46,784 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 172 transitions. Word has length 33 [2018-01-25 06:17:46,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 06:17:46,784 INFO L432 AbstractCegarLoop]: Abstraction has 150 states and 172 transitions. [2018-01-25 06:17:46,784 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 06:17:46,785 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 172 transitions. [2018-01-25 06:17:46,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-01-25 06:17:46,785 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 06:17:46,785 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 06:17:46,786 INFO L371 AbstractCegarLoop]: === Iteration 16 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 06:17:46,786 INFO L82 PathProgramCache]: Analyzing trace with hash -638053952, now seen corresponding path program 1 times [2018-01-25 06:17:46,786 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 06:17:46,787 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:17:46,787 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 06:17:46,787 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:17:46,787 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 06:17:46,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 06:17:46,797 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 06:17:46,857 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 06:17:46,857 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 06:17:46,857 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 06:17:46,857 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 06:17:46,858 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 06:17:46,858 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 06:17:46,858 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 06:17:46,858 INFO L87 Difference]: Start difference. First operand 150 states and 172 transitions. Second operand 5 states. [2018-01-25 06:17:47,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 06:17:47,246 INFO L93 Difference]: Finished difference Result 259 states and 299 transitions. [2018-01-25 06:17:47,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 06:17:47,246 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2018-01-25 06:17:47,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 06:17:47,248 INFO L225 Difference]: With dead ends: 259 [2018-01-25 06:17:47,248 INFO L226 Difference]: Without dead ends: 258 [2018-01-25 06:17:47,248 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-25 06:17:47,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2018-01-25 06:17:47,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 149. [2018-01-25 06:17:47,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-01-25 06:17:47,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 171 transitions. [2018-01-25 06:17:47,261 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 171 transitions. Word has length 33 [2018-01-25 06:17:47,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 06:17:47,261 INFO L432 AbstractCegarLoop]: Abstraction has 149 states and 171 transitions. [2018-01-25 06:17:47,261 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 06:17:47,262 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 171 transitions. [2018-01-25 06:17:47,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-01-25 06:17:47,262 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 06:17:47,262 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 06:17:47,263 INFO L371 AbstractCegarLoop]: === Iteration 17 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 06:17:47,263 INFO L82 PathProgramCache]: Analyzing trace with hash 851008324, now seen corresponding path program 1 times [2018-01-25 06:17:47,263 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 06:17:47,264 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:17:47,264 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 06:17:47,264 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:17:47,264 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 06:17:47,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 06:17:47,277 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 06:17:47,393 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 06:17:47,393 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 06:17:47,393 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-25 06:17:47,394 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 06:17:47,394 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-25 06:17:47,394 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-25 06:17:47,394 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-01-25 06:17:47,395 INFO L87 Difference]: Start difference. First operand 149 states and 171 transitions. Second operand 9 states. [2018-01-25 06:17:48,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 06:17:48,587 INFO L93 Difference]: Finished difference Result 412 states and 468 transitions. [2018-01-25 06:17:48,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-01-25 06:17:48,588 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2018-01-25 06:17:48,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 06:17:48,589 INFO L225 Difference]: With dead ends: 412 [2018-01-25 06:17:48,589 INFO L226 Difference]: Without dead ends: 411 [2018-01-25 06:17:48,590 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2018-01-25 06:17:48,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2018-01-25 06:17:48,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 165. [2018-01-25 06:17:48,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-01-25 06:17:48,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 191 transitions. [2018-01-25 06:17:48,606 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 191 transitions. Word has length 34 [2018-01-25 06:17:48,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 06:17:48,606 INFO L432 AbstractCegarLoop]: Abstraction has 165 states and 191 transitions. [2018-01-25 06:17:48,606 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-25 06:17:48,606 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 191 transitions. [2018-01-25 06:17:48,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-01-25 06:17:48,607 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 06:17:48,607 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 06:17:48,607 INFO L371 AbstractCegarLoop]: === Iteration 18 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 06:17:48,608 INFO L82 PathProgramCache]: Analyzing trace with hash 851008325, now seen corresponding path program 1 times [2018-01-25 06:17:48,608 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 06:17:48,609 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:17:48,609 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 06:17:48,609 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:17:48,609 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 06:17:48,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 06:17:48,625 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 06:17:48,785 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 06:17:48,785 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 06:17:48,785 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-25 06:17:48,785 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 06:17:48,786 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-25 06:17:48,786 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-25 06:17:48,786 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-01-25 06:17:48,786 INFO L87 Difference]: Start difference. First operand 165 states and 191 transitions. Second operand 9 states. [2018-01-25 06:17:49,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 06:17:49,372 INFO L93 Difference]: Finished difference Result 319 states and 362 transitions. [2018-01-25 06:17:49,373 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-25 06:17:49,373 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2018-01-25 06:17:49,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 06:17:49,374 INFO L225 Difference]: With dead ends: 319 [2018-01-25 06:17:49,374 INFO L226 Difference]: Without dead ends: 318 [2018-01-25 06:17:49,374 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2018-01-25 06:17:49,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2018-01-25 06:17:49,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 165. [2018-01-25 06:17:49,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-01-25 06:17:49,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 190 transitions. [2018-01-25 06:17:49,384 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 190 transitions. Word has length 34 [2018-01-25 06:17:49,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 06:17:49,384 INFO L432 AbstractCegarLoop]: Abstraction has 165 states and 190 transitions. [2018-01-25 06:17:49,384 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-25 06:17:49,384 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 190 transitions. [2018-01-25 06:17:49,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-01-25 06:17:49,385 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 06:17:49,385 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 06:17:49,385 INFO L371 AbstractCegarLoop]: === Iteration 19 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 06:17:49,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1753433128, now seen corresponding path program 1 times [2018-01-25 06:17:49,385 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 06:17:49,386 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:17:49,386 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 06:17:49,386 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:17:49,386 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 06:17:49,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 06:17:49,393 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 06:17:49,438 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 06:17:49,438 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 06:17:49,438 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-25 06:17:49,439 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 06:17:49,439 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 06:17:49,439 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 06:17:49,439 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 06:17:49,440 INFO L87 Difference]: Start difference. First operand 165 states and 190 transitions. Second operand 5 states. [2018-01-25 06:17:49,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 06:17:49,571 INFO L93 Difference]: Finished difference Result 258 states and 297 transitions. [2018-01-25 06:17:49,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-25 06:17:49,572 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2018-01-25 06:17:49,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 06:17:49,573 INFO L225 Difference]: With dead ends: 258 [2018-01-25 06:17:49,573 INFO L226 Difference]: Without dead ends: 189 [2018-01-25 06:17:49,574 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-25 06:17:49,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2018-01-25 06:17:49,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 169. [2018-01-25 06:17:49,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-01-25 06:17:49,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 194 transitions. [2018-01-25 06:17:49,588 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 194 transitions. Word has length 37 [2018-01-25 06:17:49,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 06:17:49,588 INFO L432 AbstractCegarLoop]: Abstraction has 169 states and 194 transitions. [2018-01-25 06:17:49,588 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 06:17:49,589 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 194 transitions. [2018-01-25 06:17:49,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-01-25 06:17:49,589 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 06:17:49,589 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 06:17:49,590 INFO L371 AbstractCegarLoop]: === Iteration 20 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 06:17:49,590 INFO L82 PathProgramCache]: Analyzing trace with hash -110193443, now seen corresponding path program 1 times [2018-01-25 06:17:49,590 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 06:17:49,591 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:17:49,591 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 06:17:49,591 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:17:49,591 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 06:17:49,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 06:17:49,601 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 06:17:49,734 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 06:17:49,778 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-25 06:17:49,778 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-25 06:17:49,779 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 40 with the following transitions: [2018-01-25 06:17:49,781 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [27], [38], [39], [42], [46], [50], [52], [55], [117], [121], [127], [131], [132], [133], [135], [144], [146], [158], [160], [165], [166], [169], [175], [179], [185], [188], [232], [233], [237], [238], [239] [2018-01-25 06:17:49,830 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-25 06:17:49,830 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