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_preciseopt.epf -i ../../../trunk/examples/svcomp/memsafety-ext/dll_extends_pointer_true-valid-memsafety.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-25 03:06:15,905 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-25 03:06:15,907 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-25 03:06:15,924 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-25 03:06:15,924 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-25 03:06:15,925 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-25 03:06:15,926 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-25 03:06:15,928 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-25 03:06:15,931 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-25 03:06:15,941 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-25 03:06:15,942 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-25 03:06:15,942 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-25 03:06:15,943 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-25 03:06:15,945 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-25 03:06:15,946 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-25 03:06:15,958 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-25 03:06:15,960 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-25 03:06:15,963 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-25 03:06:15,964 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-25 03:06:15,968 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-25 03:06:15,971 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-25 03:06:15,971 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-25 03:06:15,971 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-25 03:06:15,972 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-25 03:06:15,973 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-25 03:06:15,975 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-25 03:06:15,975 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-25 03:06:15,976 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-25 03:06:15,976 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-25 03:06:15,976 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-25 03:06:15,977 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-25 03:06:15,977 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_preciseopt.epf [2018-01-25 03:06:15,998 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-25 03:06:15,999 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-25 03:06:16,000 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-25 03:06:16,000 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-25 03:06:16,009 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-25 03:06:16,010 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-25 03:06:16,010 INFO L133 SettingsManager]: * Flatten before fatten=true [2018-01-25 03:06:16,010 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-25 03:06:16,010 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-25 03:06:16,011 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-25 03:06:16,011 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-25 03:06:16,011 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-25 03:06:16,011 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-25 03:06:16,012 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-25 03:06:16,012 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-25 03:06:16,012 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-25 03:06:16,012 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-25 03:06:16,012 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-25 03:06:16,012 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-25 03:06:16,013 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-25 03:06:16,016 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-25 03:06:16,016 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-25 03:06:16,016 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-25 03:06:16,016 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-25 03:06:16,017 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-25 03:06:16,017 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-25 03:06:16,017 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-25 03:06:16,017 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-25 03:06:16,017 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-25 03:06:16,018 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-25 03:06:16,018 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-25 03:06:16,018 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-25 03:06:16,018 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-25 03:06:16,018 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-25 03:06:16,019 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-25 03:06:16,020 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-25 03:06:16,020 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-25 03:06:16,087 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-25 03:06:16,104 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-25 03:06:16,113 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-25 03:06:16,115 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-25 03:06:16,116 INFO L276 PluginConnector]: CDTParser initialized [2018-01-25 03:06:16,117 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/memsafety-ext/dll_extends_pointer_true-valid-memsafety.i [2018-01-25 03:06:16,358 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-25 03:06:16,368 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-25 03:06:16,369 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-25 03:06:16,369 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-25 03:06:16,380 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-25 03:06:16,382 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 03:06:16" (1/1) ... [2018-01-25 03:06:16,387 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@915507d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:06:16, skipping insertion in model container [2018-01-25 03:06:16,387 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 03:06:16" (1/1) ... [2018-01-25 03:06:16,425 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 03:06:16,530 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 03:06:16,825 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 03:06:16,855 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 03:06:16,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:06:16 WrapperNode [2018-01-25 03:06:16,865 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-25 03:06:16,870 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-25 03:06:16,870 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-25 03:06:16,870 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-25 03:06:16,890 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:06:16" (1/1) ... [2018-01-25 03:06:16,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:06:16" (1/1) ... [2018-01-25 03:06:16,906 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:06:16" (1/1) ... [2018-01-25 03:06:16,906 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:06:16" (1/1) ... [2018-01-25 03:06:16,915 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:06:16" (1/1) ... [2018-01-25 03:06:16,922 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:06:16" (1/1) ... [2018-01-25 03:06:16,925 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:06:16" (1/1) ... [2018-01-25 03:06:16,935 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-25 03:06:16,936 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-25 03:06:16,936 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-25 03:06:16,937 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-25 03:06:16,938 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:06:16" (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 03:06:17,069 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-25 03:06:17,069 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-25 03:06:17,069 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-25 03:06:17,070 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-25 03:06:17,070 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-25 03:06:17,070 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-25 03:06:17,074 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-25 03:06:17,074 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-25 03:06:17,074 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-25 03:06:17,074 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-25 03:06:17,075 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-25 03:06:17,075 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-25 03:06:17,075 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-25 03:06:17,075 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-25 03:06:17,720 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-25 03:06:17,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 03:06:17 BoogieIcfgContainer [2018-01-25 03:06:17,721 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-25 03:06:17,722 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-25 03:06:17,722 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-25 03:06:17,726 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-25 03:06:17,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.01 03:06:16" (1/3) ... [2018-01-25 03:06:17,729 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b313bbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 03:06:17, skipping insertion in model container [2018-01-25 03:06:17,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:06:16" (2/3) ... [2018-01-25 03:06:17,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b313bbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 03:06:17, skipping insertion in model container [2018-01-25 03:06:17,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 03:06:17" (3/3) ... [2018-01-25 03:06:17,732 INFO L105 eAbstractionObserver]: Analyzing ICFG dll_extends_pointer_true-valid-memsafety.i [2018-01-25 03:06:17,742 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-25 03:06:17,752 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 25 error locations. [2018-01-25 03:06:17,831 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-25 03:06:17,831 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-25 03:06:17,832 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-25 03:06:17,832 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-25 03:06:17,840 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-25 03:06:17,840 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-25 03:06:17,840 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-25 03:06:17,841 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-25 03:06:17,842 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-25 03:06:17,880 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2018-01-25 03:06:17,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-01-25 03:06:17,888 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:06:17,889 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:06:17,889 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr24EnsuresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation]=== [2018-01-25 03:06:17,893 INFO L82 PathProgramCache]: Analyzing trace with hash -1414487999, now seen corresponding path program 1 times [2018-01-25 03:06:17,895 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:06:17,938 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:06:17,938 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:06:17,939 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:06:17,939 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:06:17,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:06:17,995 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:06:18,083 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 03:06:18,085 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:06:18,086 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 03:06:18,086 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:06:18,088 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 03:06:18,104 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 03:06:18,105 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 03:06:18,108 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 4 states. [2018-01-25 03:06:18,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:06:18,479 INFO L93 Difference]: Finished difference Result 113 states and 127 transitions. [2018-01-25 03:06:18,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 03:06:18,481 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2018-01-25 03:06:18,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:06:18,490 INFO L225 Difference]: With dead ends: 113 [2018-01-25 03:06:18,490 INFO L226 Difference]: Without dead ends: 78 [2018-01-25 03:06:18,493 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 03:06:18,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-01-25 03:06:18,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 57. [2018-01-25 03:06:18,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-01-25 03:06:18,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2018-01-25 03:06:18,528 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 9 [2018-01-25 03:06:18,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:06:18,528 INFO L432 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2018-01-25 03:06:18,528 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 03:06:18,528 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2018-01-25 03:06:18,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-01-25 03:06:18,529 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:06:18,529 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:06:18,529 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr24EnsuresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation]=== [2018-01-25 03:06:18,529 INFO L82 PathProgramCache]: Analyzing trace with hash -1414487998, now seen corresponding path program 1 times [2018-01-25 03:06:18,530 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:06:18,530 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:06:18,531 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:06:18,531 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:06:18,531 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:06:18,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:06:18,549 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:06:18,615 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 03:06:18,615 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:06:18,616 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 03:06:18,616 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:06:18,617 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 03:06:18,617 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 03:06:18,618 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 03:06:18,618 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand 4 states. [2018-01-25 03:06:18,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:06:18,787 INFO L93 Difference]: Finished difference Result 107 states and 116 transitions. [2018-01-25 03:06:18,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-25 03:06:18,787 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2018-01-25 03:06:18,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:06:18,788 INFO L225 Difference]: With dead ends: 107 [2018-01-25 03:06:18,788 INFO L226 Difference]: Without dead ends: 104 [2018-01-25 03:06:18,789 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 03:06:18,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-01-25 03:06:18,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 54. [2018-01-25 03:06:18,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-01-25 03:06:18,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2018-01-25 03:06:18,796 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 9 [2018-01-25 03:06:18,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:06:18,797 INFO L432 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2018-01-25 03:06:18,797 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 03:06:18,797 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2018-01-25 03:06:18,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-25 03:06:18,798 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:06:18,798 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:06:18,798 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr24EnsuresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation]=== [2018-01-25 03:06:18,798 INFO L82 PathProgramCache]: Analyzing trace with hash 689004913, now seen corresponding path program 1 times [2018-01-25 03:06:18,798 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:06:18,799 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:06:18,799 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:06:18,800 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:06:18,800 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:06:18,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:06:18,821 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:06:18,863 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 03:06:18,864 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:06:18,864 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 03:06:18,864 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:06:18,864 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 03:06:18,864 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 03:06:18,864 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 03:06:18,865 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 4 states. [2018-01-25 03:06:19,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:06:19,005 INFO L93 Difference]: Finished difference Result 67 states and 70 transitions. [2018-01-25 03:06:19,007 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 03:06:19,007 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2018-01-25 03:06:19,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:06:19,008 INFO L225 Difference]: With dead ends: 67 [2018-01-25 03:06:19,008 INFO L226 Difference]: Without dead ends: 64 [2018-01-25 03:06:19,011 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-25 03:06:19,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-01-25 03:06:19,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 58. [2018-01-25 03:06:19,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-01-25 03:06:19,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 65 transitions. [2018-01-25 03:06:19,018 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 65 transitions. Word has length 18 [2018-01-25 03:06:19,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:06:19,019 INFO L432 AbstractCegarLoop]: Abstraction has 58 states and 65 transitions. [2018-01-25 03:06:19,019 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 03:06:19,019 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 65 transitions. [2018-01-25 03:06:19,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-25 03:06:19,020 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:06:19,020 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:06:19,020 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr24EnsuresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation]=== [2018-01-25 03:06:19,020 INFO L82 PathProgramCache]: Analyzing trace with hash 689004914, now seen corresponding path program 1 times [2018-01-25 03:06:19,021 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:06:19,021 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:06:19,021 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:06:19,022 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:06:19,022 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:06:19,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:06:19,037 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:06:19,125 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 03:06:19,126 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:06:19,126 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 03:06:19,126 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:06:19,126 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 03:06:19,127 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 03:06:19,127 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 03:06:19,127 INFO L87 Difference]: Start difference. First operand 58 states and 65 transitions. Second operand 5 states. [2018-01-25 03:06:19,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:06:19,337 INFO L93 Difference]: Finished difference Result 144 states and 162 transitions. [2018-01-25 03:06:19,338 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 03:06:19,338 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2018-01-25 03:06:19,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:06:19,339 INFO L225 Difference]: With dead ends: 144 [2018-01-25 03:06:19,339 INFO L226 Difference]: Without dead ends: 139 [2018-01-25 03:06:19,340 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 [2018-01-25 03:06:19,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-01-25 03:06:19,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 76. [2018-01-25 03:06:19,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-01-25 03:06:19,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 91 transitions. [2018-01-25 03:06:19,347 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 91 transitions. Word has length 18 [2018-01-25 03:06:19,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:06:19,347 INFO L432 AbstractCegarLoop]: Abstraction has 76 states and 91 transitions. [2018-01-25 03:06:19,348 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 03:06:19,348 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 91 transitions. [2018-01-25 03:06:19,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-25 03:06:19,348 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:06:19,348 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:06:19,348 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr24EnsuresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation]=== [2018-01-25 03:06:19,349 INFO L82 PathProgramCache]: Analyzing trace with hash 689036531, now seen corresponding path program 1 times [2018-01-25 03:06:19,349 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:06:19,350 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:06:19,350 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:06:19,350 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:06:19,350 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:06:19,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:06:19,365 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:06:19,396 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 03:06:19,396 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:06:19,396 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 03:06:19,397 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:06:19,397 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 03:06:19,397 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 03:06:19,397 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 03:06:19,397 INFO L87 Difference]: Start difference. First operand 76 states and 91 transitions. Second operand 4 states. [2018-01-25 03:06:19,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:06:19,472 INFO L93 Difference]: Finished difference Result 93 states and 104 transitions. [2018-01-25 03:06:19,472 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 03:06:19,472 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2018-01-25 03:06:19,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:06:19,475 INFO L225 Difference]: With dead ends: 93 [2018-01-25 03:06:19,475 INFO L226 Difference]: Without dead ends: 92 [2018-01-25 03:06:19,476 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 03:06:19,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2018-01-25 03:06:19,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 75. [2018-01-25 03:06:19,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-01-25 03:06:19,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 89 transitions. [2018-01-25 03:06:19,487 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 89 transitions. Word has length 18 [2018-01-25 03:06:19,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:06:19,487 INFO L432 AbstractCegarLoop]: Abstraction has 75 states and 89 transitions. [2018-01-25 03:06:19,487 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 03:06:19,487 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 89 transitions. [2018-01-25 03:06:19,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-25 03:06:19,488 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:06:19,488 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:06:19,488 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr24EnsuresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation]=== [2018-01-25 03:06:19,488 INFO L82 PathProgramCache]: Analyzing trace with hash 689036532, now seen corresponding path program 1 times [2018-01-25 03:06:19,489 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:06:19,489 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:06:19,489 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:06:19,489 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:06:19,490 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:06:19,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:06:19,504 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:06:19,575 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 03:06:19,575 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:06:19,575 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 03:06:19,575 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:06:19,576 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 03:06:19,576 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 03:06:19,576 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 03:06:19,576 INFO L87 Difference]: Start difference. First operand 75 states and 89 transitions. Second operand 4 states. [2018-01-25 03:06:19,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:06:19,697 INFO L93 Difference]: Finished difference Result 112 states and 131 transitions. [2018-01-25 03:06:19,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-25 03:06:19,697 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2018-01-25 03:06:19,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:06:19,698 INFO L225 Difference]: With dead ends: 112 [2018-01-25 03:06:19,698 INFO L226 Difference]: Without dead ends: 110 [2018-01-25 03:06:19,698 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 03:06:19,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2018-01-25 03:06:19,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 73. [2018-01-25 03:06:19,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-01-25 03:06:19,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 86 transitions. [2018-01-25 03:06:19,705 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 86 transitions. Word has length 18 [2018-01-25 03:06:19,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:06:19,705 INFO L432 AbstractCegarLoop]: Abstraction has 73 states and 86 transitions. [2018-01-25 03:06:19,705 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 03:06:19,705 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 86 transitions. [2018-01-25 03:06:19,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-01-25 03:06:19,706 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:06:19,706 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:06:19,706 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr24EnsuresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation]=== [2018-01-25 03:06:19,706 INFO L82 PathProgramCache]: Analyzing trace with hash -115685232, now seen corresponding path program 1 times [2018-01-25 03:06:19,706 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:06:19,707 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:06:19,707 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:06:19,707 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:06:19,707 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:06:19,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:06:19,716 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:06:19,742 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 03:06:19,743 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:06:19,743 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-25 03:06:19,743 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:06:19,743 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 03:06:19,744 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 03:06:19,744 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 03:06:19,744 INFO L87 Difference]: Start difference. First operand 73 states and 86 transitions. Second operand 5 states. [2018-01-25 03:06:19,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:06:19,819 INFO L93 Difference]: Finished difference Result 90 states and 101 transitions. [2018-01-25 03:06:19,822 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 03:06:19,822 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2018-01-25 03:06:19,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:06:19,823 INFO L225 Difference]: With dead ends: 90 [2018-01-25 03:06:19,824 INFO L226 Difference]: Without dead ends: 87 [2018-01-25 03:06:19,824 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 03:06:19,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-01-25 03:06:19,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 73. [2018-01-25 03:06:19,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-01-25 03:06:19,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 85 transitions. [2018-01-25 03:06:19,832 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 85 transitions. Word has length 19 [2018-01-25 03:06:19,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:06:19,833 INFO L432 AbstractCegarLoop]: Abstraction has 73 states and 85 transitions. [2018-01-25 03:06:19,833 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 03:06:19,833 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 85 transitions. [2018-01-25 03:06:19,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-01-25 03:06:19,834 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:06:19,834 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] [2018-01-25 03:06:19,834 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr24EnsuresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation]=== [2018-01-25 03:06:19,834 INFO L82 PathProgramCache]: Analyzing trace with hash 580005852, now seen corresponding path program 1 times [2018-01-25 03:06:19,834 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:06:19,835 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:06:19,836 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:06:19,836 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:06:19,836 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:06:19,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:06:19,860 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:06:20,052 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 03:06:20,053 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:06:20,053 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-01-25 03:06:20,053 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:06:20,053 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-25 03:06:20,053 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-25 03:06:20,054 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-01-25 03:06:20,054 INFO L87 Difference]: Start difference. First operand 73 states and 85 transitions. Second operand 7 states. [2018-01-25 03:06:20,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:06:20,514 INFO L93 Difference]: Finished difference Result 104 states and 117 transitions. [2018-01-25 03:06:20,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-25 03:06:20,516 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2018-01-25 03:06:20,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:06:20,517 INFO L225 Difference]: With dead ends: 104 [2018-01-25 03:06:20,518 INFO L226 Difference]: Without dead ends: 77 [2018-01-25 03:06:20,519 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2018-01-25 03:06:20,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-01-25 03:06:20,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 69. [2018-01-25 03:06:20,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-01-25 03:06:20,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 77 transitions. [2018-01-25 03:06:20,527 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 77 transitions. Word has length 23 [2018-01-25 03:06:20,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:06:20,527 INFO L432 AbstractCegarLoop]: Abstraction has 69 states and 77 transitions. [2018-01-25 03:06:20,528 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-25 03:06:20,528 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 77 transitions. [2018-01-25 03:06:20,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-01-25 03:06:20,531 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:06:20,531 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] [2018-01-25 03:06:20,531 INFO L371 AbstractCegarLoop]: === Iteration 9 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr24EnsuresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation]=== [2018-01-25 03:06:20,532 INFO L82 PathProgramCache]: Analyzing trace with hash -493029770, now seen corresponding path program 1 times [2018-01-25 03:06:20,532 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:06:20,533 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:06:20,533 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:06:20,533 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:06:20,533 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:06:20,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:06:20,557 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:06:20,916 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 03:06:20,916 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:06:20,917 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 03:06:20,917 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:06:20,917 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 03:06:20,917 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 03:06:20,918 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-01-25 03:06:20,918 INFO L87 Difference]: Start difference. First operand 69 states and 77 transitions. Second operand 5 states. [2018-01-25 03:06:21,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:06:21,180 INFO L93 Difference]: Finished difference Result 108 states and 120 transitions. [2018-01-25 03:06:21,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 03:06:21,180 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2018-01-25 03:06:21,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:06:21,181 INFO L225 Difference]: With dead ends: 108 [2018-01-25 03:06:21,181 INFO L226 Difference]: Without dead ends: 107 [2018-01-25 03:06:21,182 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-01-25 03:06:21,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-01-25 03:06:21,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 68. [2018-01-25 03:06:21,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-01-25 03:06:21,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 76 transitions. [2018-01-25 03:06:21,187 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 76 transitions. Word has length 23 [2018-01-25 03:06:21,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:06:21,187 INFO L432 AbstractCegarLoop]: Abstraction has 68 states and 76 transitions. [2018-01-25 03:06:21,187 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 03:06:21,187 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 76 transitions. [2018-01-25 03:06:21,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-25 03:06:21,188 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:06:21,188 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:06:21,189 INFO L371 AbstractCegarLoop]: === Iteration 10 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr24EnsuresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation]=== [2018-01-25 03:06:21,189 INFO L82 PathProgramCache]: Analyzing trace with hash -951533272, now seen corresponding path program 1 times [2018-01-25 03:06:21,189 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:06:21,190 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:06:21,190 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:06:21,190 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:06:21,190 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:06:21,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:06:21,205 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:06:21,506 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:06:21,506 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-25 03:06:21,506 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-25 03:06:21,507 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 26 with the following transitions: [2018-01-25 03:06:21,509 INFO L201 CegarAbsIntRunner]: [0], [1], [5], [6], [7], [8], [11], [14], [17], [21], [23], [26], [57], [63], [64], [65], [67], [68], [82], [84], [93], [94], [95] [2018-01-25 03:06:21,564 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-25 03:06:21,565 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