java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-simple-white-blue_true-unreach-call_false-valid-memtrack.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 20:51:23,843 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 20:51:23,845 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 20:51:23,860 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 20:51:23,860 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 20:51:23,861 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 20:51:23,863 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 20:51:23,864 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 20:51:23,866 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 20:51:23,867 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 20:51:23,868 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 20:51:23,868 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 20:51:23,869 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 20:51:23,871 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 20:51:23,872 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 20:51:23,874 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 20:51:23,877 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 20:51:23,879 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 20:51:23,881 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 20:51:23,882 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 20:51:23,885 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-24 20:51:23,885 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-24 20:51:23,885 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-24 20:51:23,886 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-24 20:51:23,887 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-24 20:51:23,889 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-24 20:51:23,889 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-24 20:51:23,890 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-24 20:51:23,890 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-24 20:51:23,890 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 20:51:23,891 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 20:51:23,891 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf [2018-01-24 20:51:23,899 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 20:51:23,900 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 20:51:23,900 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 20:51:23,901 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 20:51:23,901 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 20:51:23,901 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-24 20:51:23,901 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 20:51:23,901 INFO L133 SettingsManager]: * Precise comparison operator=true [2018-01-24 20:51:23,901 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 20:51:23,902 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 20:51:23,902 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 20:51:23,902 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 20:51:23,903 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 20:51:23,903 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 20:51:23,903 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 20:51:23,903 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 20:51:23,903 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 20:51:23,903 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 20:51:23,903 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 20:51:23,903 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 20:51:23,904 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 20:51:23,904 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 20:51:23,904 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 20:51:23,904 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 20:51:23,904 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 20:51:23,905 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 20:51:23,905 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 20:51:23,905 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 20:51:23,905 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 20:51:23,905 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 20:51:23,905 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-24 20:51:23,905 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 20:51:23,906 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 20:51:23,906 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 20:51:23,906 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-24 20:51:23,906 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 20:51:23,907 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 20:51:23,940 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 20:51:23,951 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 20:51:23,955 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 20:51:23,956 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 20:51:23,956 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 20:51:23,957 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-simple-white-blue_true-unreach-call_false-valid-memtrack.i [2018-01-24 20:51:24,121 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 20:51:24,127 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 20:51:24,128 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 20:51:24,128 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 20:51:24,133 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 20:51:24,134 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 08:51:24" (1/1) ... [2018-01-24 20:51:24,137 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4430c394 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:51:24, skipping insertion in model container [2018-01-24 20:51:24,137 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 08:51:24" (1/1) ... [2018-01-24 20:51:24,151 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 20:51:24,192 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 20:51:24,323 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 20:51:24,350 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 20:51:24,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:51:24 WrapperNode [2018-01-24 20:51:24,359 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 20:51:24,360 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 20:51:24,360 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 20:51:24,360 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 20:51:24,372 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:51:24" (1/1) ... [2018-01-24 20:51:24,372 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:51:24" (1/1) ... [2018-01-24 20:51:24,382 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:51:24" (1/1) ... [2018-01-24 20:51:24,382 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:51:24" (1/1) ... [2018-01-24 20:51:24,388 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:51:24" (1/1) ... [2018-01-24 20:51:24,393 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:51:24" (1/1) ... [2018-01-24 20:51:24,395 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:51:24" (1/1) ... [2018-01-24 20:51:24,397 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 20:51:24,398 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 20:51:24,398 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 20:51:24,398 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 20:51:24,399 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:51:24" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 20:51:24,455 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 20:51:24,455 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 20:51:24,455 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 20:51:24,455 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-24 20:51:24,455 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-24 20:51:24,456 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-24 20:51:24,456 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-24 20:51:24,456 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 20:51:24,456 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 20:51:24,456 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 20:51:24,456 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-24 20:51:24,457 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-24 20:51:24,457 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 20:51:24,457 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-24 20:51:24,457 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 20:51:24,457 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 20:51:24,457 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 20:51:24,926 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 20:51:24,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 08:51:24 BoogieIcfgContainer [2018-01-24 20:51:24,927 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 20:51:24,928 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-24 20:51:24,928 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-24 20:51:24,931 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-24 20:51:24,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.01 08:51:24" (1/3) ... [2018-01-24 20:51:24,932 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24b03af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 08:51:24, skipping insertion in model container [2018-01-24 20:51:24,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:51:24" (2/3) ... [2018-01-24 20:51:24,933 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24b03af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 08:51:24, skipping insertion in model container [2018-01-24 20:51:24,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 08:51:24" (3/3) ... [2018-01-24 20:51:24,935 INFO L105 eAbstractionObserver]: Analyzing ICFG sll-simple-white-blue_true-unreach-call_false-valid-memtrack.i [2018-01-24 20:51:24,944 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-24 20:51:24,952 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 43 error locations. [2018-01-24 20:51:25,003 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-24 20:51:25,004 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-24 20:51:25,004 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-24 20:51:25,004 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-24 20:51:25,004 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-24 20:51:25,004 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-24 20:51:25,004 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-24 20:51:25,005 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-24 20:51:25,006 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-24 20:51:25,027 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states. [2018-01-24 20:51:25,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-24 20:51:25,032 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:51:25,033 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:51:25,034 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr42EnsuresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:51:25,038 INFO L82 PathProgramCache]: Analyzing trace with hash 805618339, now seen corresponding path program 1 times [2018-01-24 20:51:25,040 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:51:25,081 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:51:25,082 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:51:25,082 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:51:25,082 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:51:25,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:51:25,128 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:51:25,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:51:25,201 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:51:25,201 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 20:51:25,202 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:51:25,205 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 20:51:25,215 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 20:51:25,215 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 20:51:25,217 INFO L87 Difference]: Start difference. First operand 109 states. Second operand 4 states. [2018-01-24 20:51:25,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:51:25,584 INFO L93 Difference]: Finished difference Result 232 states and 270 transitions. [2018-01-24 20:51:25,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 20:51:25,586 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-24 20:51:25,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:51:25,601 INFO L225 Difference]: With dead ends: 232 [2018-01-24 20:51:25,601 INFO L226 Difference]: Without dead ends: 143 [2018-01-24 20:51:25,606 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:51:25,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-01-24 20:51:25,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 101. [2018-01-24 20:51:25,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-01-24 20:51:25,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 107 transitions. [2018-01-24 20:51:25,652 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 107 transitions. Word has length 8 [2018-01-24 20:51:25,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:51:25,652 INFO L432 AbstractCegarLoop]: Abstraction has 101 states and 107 transitions. [2018-01-24 20:51:25,652 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 20:51:25,653 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 107 transitions. [2018-01-24 20:51:25,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-24 20:51:25,653 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:51:25,653 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:51:25,653 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr42EnsuresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:51:25,653 INFO L82 PathProgramCache]: Analyzing trace with hash 805618340, now seen corresponding path program 1 times [2018-01-24 20:51:25,653 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:51:25,655 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:51:25,655 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:51:25,655 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:51:25,655 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:51:25,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:51:25,671 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:51:25,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:51:25,737 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:51:25,737 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 20:51:25,737 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:51:25,738 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 20:51:25,738 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 20:51:25,739 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 20:51:25,739 INFO L87 Difference]: Start difference. First operand 101 states and 107 transitions. Second operand 4 states. [2018-01-24 20:51:25,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:51:25,900 INFO L93 Difference]: Finished difference Result 131 states and 139 transitions. [2018-01-24 20:51:25,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 20:51:25,900 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-24 20:51:25,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:51:25,902 INFO L225 Difference]: With dead ends: 131 [2018-01-24 20:51:25,902 INFO L226 Difference]: Without dead ends: 129 [2018-01-24 20:51:25,903 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:51:25,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2018-01-24 20:51:25,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 99. [2018-01-24 20:51:25,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-01-24 20:51:25,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 105 transitions. [2018-01-24 20:51:25,916 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 105 transitions. Word has length 8 [2018-01-24 20:51:25,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:51:25,916 INFO L432 AbstractCegarLoop]: Abstraction has 99 states and 105 transitions. [2018-01-24 20:51:25,917 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 20:51:25,917 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 105 transitions. [2018-01-24 20:51:25,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-01-24 20:51:25,917 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:51:25,918 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:51:25,918 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr42EnsuresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:51:25,918 INFO L82 PathProgramCache]: Analyzing trace with hash -86961810, now seen corresponding path program 1 times [2018-01-24 20:51:25,918 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:51:25,919 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:51:25,920 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:51:25,920 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:51:25,920 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:51:25,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:51:25,943 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:51:26,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:51:26,007 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:51:26,007 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 20:51:26,007 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:51:26,007 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 20:51:26,008 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 20:51:26,008 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 20:51:26,008 INFO L87 Difference]: Start difference. First operand 99 states and 105 transitions. Second operand 4 states. [2018-01-24 20:51:26,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:51:26,179 INFO L93 Difference]: Finished difference Result 119 states and 125 transitions. [2018-01-24 20:51:26,179 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 20:51:26,179 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2018-01-24 20:51:26,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:51:26,180 INFO L225 Difference]: With dead ends: 119 [2018-01-24 20:51:26,180 INFO L226 Difference]: Without dead ends: 103 [2018-01-24 20:51:26,181 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:51:26,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-01-24 20:51:26,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 96. [2018-01-24 20:51:26,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-01-24 20:51:26,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 107 transitions. [2018-01-24 20:51:26,191 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 107 transitions. Word has length 15 [2018-01-24 20:51:26,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:51:26,191 INFO L432 AbstractCegarLoop]: Abstraction has 96 states and 107 transitions. [2018-01-24 20:51:26,192 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 20:51:26,192 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 107 transitions. [2018-01-24 20:51:26,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-01-24 20:51:26,192 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:51:26,193 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:51:26,193 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr42EnsuresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:51:26,193 INFO L82 PathProgramCache]: Analyzing trace with hash -86961809, now seen corresponding path program 1 times [2018-01-24 20:51:26,193 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:51:26,194 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:51:26,194 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:51:26,194 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:51:26,195 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:51:26,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:51:26,212 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:51:26,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:51:26,317 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:51:26,317 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-24 20:51:26,317 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:51:26,318 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-24 20:51:26,318 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-24 20:51:26,318 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-01-24 20:51:26,318 INFO L87 Difference]: Start difference. First operand 96 states and 107 transitions. Second operand 7 states. [2018-01-24 20:51:26,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:51:26,685 INFO L93 Difference]: Finished difference Result 173 states and 190 transitions. [2018-01-24 20:51:26,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 20:51:26,686 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2018-01-24 20:51:26,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:51:26,687 INFO L225 Difference]: With dead ends: 173 [2018-01-24 20:51:26,687 INFO L226 Difference]: Without dead ends: 160 [2018-01-24 20:51:26,687 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-01-24 20:51:26,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2018-01-24 20:51:26,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 136. [2018-01-24 20:51:26,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2018-01-24 20:51:26,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 160 transitions. [2018-01-24 20:51:26,702 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 160 transitions. Word has length 15 [2018-01-24 20:51:26,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:51:26,702 INFO L432 AbstractCegarLoop]: Abstraction has 136 states and 160 transitions. [2018-01-24 20:51:26,702 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-24 20:51:26,702 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 160 transitions. [2018-01-24 20:51:26,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-24 20:51:26,703 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:51:26,703 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:51:26,703 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr42EnsuresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:51:26,704 INFO L82 PathProgramCache]: Analyzing trace with hash -854983682, now seen corresponding path program 1 times [2018-01-24 20:51:26,704 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:51:26,704 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:51:26,705 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:51:26,705 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:51:26,705 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:51:26,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:51:26,718 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:51:26,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:51:26,746 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:51:26,746 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 20:51:26,746 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:51:26,746 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 20:51:26,747 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 20:51:26,747 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 20:51:26,747 INFO L87 Difference]: Start difference. First operand 136 states and 160 transitions. Second operand 4 states. [2018-01-24 20:51:26,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:51:26,868 INFO L93 Difference]: Finished difference Result 152 states and 167 transitions. [2018-01-24 20:51:26,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 20:51:26,868 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2018-01-24 20:51:26,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:51:26,870 INFO L225 Difference]: With dead ends: 152 [2018-01-24 20:51:26,870 INFO L226 Difference]: Without dead ends: 151 [2018-01-24 20:51:26,870 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:51:26,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-01-24 20:51:26,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 135. [2018-01-24 20:51:26,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-01-24 20:51:26,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 159 transitions. [2018-01-24 20:51:26,884 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 159 transitions. Word has length 18 [2018-01-24 20:51:26,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:51:26,884 INFO L432 AbstractCegarLoop]: Abstraction has 135 states and 159 transitions. [2018-01-24 20:51:26,884 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 20:51:26,884 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 159 transitions. [2018-01-24 20:51:26,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-24 20:51:26,885 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:51:26,885 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:51:26,885 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr42EnsuresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:51:26,886 INFO L82 PathProgramCache]: Analyzing trace with hash -854983681, now seen corresponding path program 1 times [2018-01-24 20:51:26,886 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:51:26,887 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:51:26,887 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:51:26,887 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:51:26,887 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:51:26,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:51:26,899 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:51:26,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:51:26,949 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:51:26,949 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 20:51:26,950 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:51:26,950 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 20:51:26,950 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 20:51:26,950 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 20:51:26,951 INFO L87 Difference]: Start difference. First operand 135 states and 159 transitions. Second operand 4 states. [2018-01-24 20:51:27,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:51:27,097 INFO L93 Difference]: Finished difference Result 154 states and 171 transitions. [2018-01-24 20:51:27,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 20:51:27,097 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2018-01-24 20:51:27,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:51:27,098 INFO L225 Difference]: With dead ends: 154 [2018-01-24 20:51:27,098 INFO L226 Difference]: Without dead ends: 152 [2018-01-24 20:51:27,099 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:51:27,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2018-01-24 20:51:27,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 133. [2018-01-24 20:51:27,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-01-24 20:51:27,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 157 transitions. [2018-01-24 20:51:27,110 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 157 transitions. Word has length 18 [2018-01-24 20:51:27,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:51:27,111 INFO L432 AbstractCegarLoop]: Abstraction has 133 states and 157 transitions. [2018-01-24 20:51:27,111 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 20:51:27,111 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 157 transitions. [2018-01-24 20:51:27,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-24 20:51:27,112 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:51:27,112 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:51:27,112 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr42EnsuresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:51:27,112 INFO L82 PathProgramCache]: Analyzing trace with hash -814008083, now seen corresponding path program 1 times [2018-01-24 20:51:27,112 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:51:27,113 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:51:27,113 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:51:27,113 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:51:27,114 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:51:27,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:51:27,121 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:51:27,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:51:27,156 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:51:27,156 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-24 20:51:27,156 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:51:27,157 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-24 20:51:27,157 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-24 20:51:27,157 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-24 20:51:27,157 INFO L87 Difference]: Start difference. First operand 133 states and 157 transitions. Second operand 6 states. [2018-01-24 20:51:27,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:51:27,417 INFO L93 Difference]: Finished difference Result 229 states and 272 transitions. [2018-01-24 20:51:27,417 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-24 20:51:27,417 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2018-01-24 20:51:27,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:51:27,420 INFO L225 Difference]: With dead ends: 229 [2018-01-24 20:51:27,420 INFO L226 Difference]: Without dead ends: 228 [2018-01-24 20:51:27,420 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-01-24 20:51:27,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2018-01-24 20:51:27,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 132. [2018-01-24 20:51:27,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2018-01-24 20:51:27,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 156 transitions. [2018-01-24 20:51:27,431 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 156 transitions. Word has length 18 [2018-01-24 20:51:27,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:51:27,431 INFO L432 AbstractCegarLoop]: Abstraction has 132 states and 156 transitions. [2018-01-24 20:51:27,431 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-24 20:51:27,431 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 156 transitions. [2018-01-24 20:51:27,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-24 20:51:27,432 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:51:27,432 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:51:27,432 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr42EnsuresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:51:27,432 INFO L82 PathProgramCache]: Analyzing trace with hash -814008082, now seen corresponding path program 1 times [2018-01-24 20:51:27,432 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:51:27,433 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:51:27,433 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:51:27,433 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:51:27,434 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:51:27,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:51:27,446 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:51:27,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:51:27,521 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:51:27,521 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-24 20:51:27,521 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:51:27,521 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-24 20:51:27,522 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-24 20:51:27,522 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-24 20:51:27,522 INFO L87 Difference]: Start difference. First operand 132 states and 156 transitions. Second operand 6 states. [2018-01-24 20:51:27,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:51:27,807 INFO L93 Difference]: Finished difference Result 236 states and 282 transitions. [2018-01-24 20:51:27,807 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-24 20:51:27,807 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2018-01-24 20:51:27,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:51:27,808 INFO L225 Difference]: With dead ends: 236 [2018-01-24 20:51:27,808 INFO L226 Difference]: Without dead ends: 232 [2018-01-24 20:51:27,808 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2018-01-24 20:51:27,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2018-01-24 20:51:27,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 122. [2018-01-24 20:51:27,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2018-01-24 20:51:27,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 145 transitions. [2018-01-24 20:51:27,817 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 145 transitions. Word has length 18 [2018-01-24 20:51:27,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:51:27,817 INFO L432 AbstractCegarLoop]: Abstraction has 122 states and 145 transitions. [2018-01-24 20:51:27,817 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-24 20:51:27,817 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 145 transitions. [2018-01-24 20:51:27,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-01-24 20:51:27,818 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:51:27,818 INFO L322 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:51:27,818 INFO L371 AbstractCegarLoop]: === Iteration 9 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr42EnsuresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:51:27,818 INFO L82 PathProgramCache]: Analyzing trace with hash 1060549093, now seen corresponding path program 1 times [2018-01-24 20:51:27,818 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:51:27,819 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:51:27,819 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:51:27,819 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:51:27,819 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:51:27,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:51:27,831 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:51:28,024 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:51:28,025 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:51:28,025 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-24 20:51:28,025 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:51:28,025 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 20:51:28,026 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 20:51:28,026 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:51:28,026 INFO L87 Difference]: Start difference. First operand 122 states and 145 transitions. Second operand 5 states. [2018-01-24 20:51:28,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:51:28,213 INFO L93 Difference]: Finished difference Result 210 states and 243 transitions. [2018-01-24 20:51:28,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 20:51:28,213 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2018-01-24 20:51:28,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:51:28,214 INFO L225 Difference]: With dead ends: 210 [2018-01-24 20:51:28,214 INFO L226 Difference]: Without dead ends: 139 [2018-01-24 20:51:28,215 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-24 20:51:28,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-01-24 20:51:28,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 130. [2018-01-24 20:51:28,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2018-01-24 20:51:28,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 155 transitions. [2018-01-24 20:51:28,225 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 155 transitions. Word has length 23 [2018-01-24 20:51:28,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:51:28,225 INFO L432 AbstractCegarLoop]: Abstraction has 130 states and 155 transitions. [2018-01-24 20:51:28,225 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 20:51:28,225 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 155 transitions. [2018-01-24 20:51:28,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-01-24 20:51:28,226 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:51:28,227 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:51:28,227 INFO L371 AbstractCegarLoop]: === Iteration 10 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr42EnsuresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:51:28,227 INFO L82 PathProgramCache]: Analyzing trace with hash -212541728, now seen corresponding path program 1 times [2018-01-24 20:51:28,227 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:51:28,228 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:51:28,228 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:51:28,228 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:51:28,228 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:51:28,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:51:28,239 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:51:28,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:51:28,300 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:51:28,301 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 20:51:28,301 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:51:28,301 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 20:51:28,301 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 20:51:28,302 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:51:28,302 INFO L87 Difference]: Start difference. First operand 130 states and 155 transitions. Second operand 5 states. [2018-01-24 20:51:28,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:51:28,565 INFO L93 Difference]: Finished difference Result 167 states and 182 transitions. [2018-01-24 20:51:28,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 20:51:28,565 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2018-01-24 20:51:28,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:51:28,566 INFO L225 Difference]: With dead ends: 167 [2018-01-24 20:51:28,566 INFO L226 Difference]: Without dead ends: 162 [2018-01-24 20:51:28,567 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-24 20:51:28,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2018-01-24 20:51:28,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 108. [2018-01-24 20:51:28,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2018-01-24 20:51:28,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 120 transitions. [2018-01-24 20:51:28,575 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 120 transitions. Word has length 23 [2018-01-24 20:51:28,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:51:28,575 INFO L432 AbstractCegarLoop]: Abstraction has 108 states and 120 transitions. [2018-01-24 20:51:28,575 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 20:51:28,575 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 120 transitions. [2018-01-24 20:51:28,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-01-24 20:51:28,577 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:51:28,577 INFO L322 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:51:28,577 INFO L371 AbstractCegarLoop]: === Iteration 11 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr42EnsuresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:51:28,577 INFO L82 PathProgramCache]: Analyzing trace with hash 1439904849, now seen corresponding path program 1 times [2018-01-24 20:51:28,578 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:51:28,579 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:51:28,579 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:51:28,579 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:51:28,579 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:51:28,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:51:28,593 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:51:28,727 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:51:28,727 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 20:51:28,728 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-24 20:51:28,729 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 29 with the following transitions: [2018-01-24 20:51:28,731 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [12], [14], [17], [37], [40], [41], [42], [43], [46], [49], [92], [96], [98], [99], [105], [106], [109], [185], [186], [190], [191], [192] [2018-01-24 20:51:28,785 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-24 20:51:28,786 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