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/tree_cnstr_true-valid-memsafety_false-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-25 03:07:16,602 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-25 03:07:16,605 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-25 03:07:16,625 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-25 03:07:16,625 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-25 03:07:16,626 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-25 03:07:16,627 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-25 03:07:16,629 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-25 03:07:16,632 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-25 03:07:16,632 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-25 03:07:16,633 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-25 03:07:16,633 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-25 03:07:16,634 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-25 03:07:16,635 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-25 03:07:16,635 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-25 03:07:16,638 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-25 03:07:16,640 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-25 03:07:16,643 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-25 03:07:16,644 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-25 03:07:16,646 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-25 03:07:16,648 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-25 03:07:16,648 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-25 03:07:16,649 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-25 03:07:16,650 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-25 03:07:16,651 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-25 03:07:16,652 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-25 03:07:16,653 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-25 03:07:16,653 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-25 03:07:16,654 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-25 03:07:16,654 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-25 03:07:16,655 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-25 03:07:16,655 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 03:07:16,666 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-25 03:07:16,666 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-25 03:07:16,667 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-25 03:07:16,667 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-25 03:07:16,668 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-25 03:07:16,668 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-25 03:07:16,668 INFO L133 SettingsManager]: * Flatten before fatten=true [2018-01-25 03:07:16,668 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-25 03:07:16,668 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-25 03:07:16,669 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-25 03:07:16,669 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-25 03:07:16,669 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-25 03:07:16,670 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-25 03:07:16,670 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-25 03:07:16,670 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-25 03:07:16,670 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-25 03:07:16,670 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-25 03:07:16,671 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-25 03:07:16,671 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-25 03:07:16,671 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-25 03:07:16,671 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-25 03:07:16,671 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-25 03:07:16,671 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-25 03:07:16,672 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-25 03:07:16,672 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-25 03:07:16,672 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-25 03:07:16,672 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-25 03:07:16,672 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-25 03:07:16,673 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-25 03:07:16,673 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-25 03:07:16,673 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-25 03:07:16,673 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-25 03:07:16,673 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-25 03:07:16,674 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-25 03:07:16,674 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-25 03:07:16,676 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-25 03:07:16,676 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-25 03:07:16,724 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-25 03:07:16,745 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-25 03:07:16,753 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-25 03:07:16,756 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-25 03:07:16,757 INFO L276 PluginConnector]: CDTParser initialized [2018-01-25 03:07:16,758 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/memsafety-ext/tree_cnstr_true-valid-memsafety_false-termination.i [2018-01-25 03:07:16,979 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-25 03:07:16,986 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-25 03:07:16,988 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-25 03:07:16,988 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-25 03:07:16,994 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-25 03:07:16,995 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 03:07:16" (1/1) ... [2018-01-25 03:07:16,998 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62fcc6d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:07:16, skipping insertion in model container [2018-01-25 03:07:16,998 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 03:07:16" (1/1) ... [2018-01-25 03:07:17,015 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 03:07:17,056 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 03:07:17,188 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 03:07:17,206 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 03:07:17,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:07:17 WrapperNode [2018-01-25 03:07:17,214 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-25 03:07:17,214 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-25 03:07:17,215 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-25 03:07:17,215 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-25 03:07:17,231 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:07:17" (1/1) ... [2018-01-25 03:07:17,231 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:07:17" (1/1) ... [2018-01-25 03:07:17,243 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:07:17" (1/1) ... [2018-01-25 03:07:17,244 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:07:17" (1/1) ... [2018-01-25 03:07:17,251 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:07:17" (1/1) ... [2018-01-25 03:07:17,257 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:07:17" (1/1) ... [2018-01-25 03:07:17,259 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:07:17" (1/1) ... [2018-01-25 03:07:17,261 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-25 03:07:17,261 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-25 03:07:17,262 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-25 03:07:17,262 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-25 03:07:17,263 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:07:17" (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 03:07:17,318 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-25 03:07:17,318 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-25 03:07:17,318 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-25 03:07:17,319 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-25 03:07:17,319 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-25 03:07:17,319 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-25 03:07:17,319 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-25 03:07:17,319 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-25 03:07:17,319 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-25 03:07:17,319 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-25 03:07:17,319 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-25 03:07:17,319 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-25 03:07:17,320 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-25 03:07:17,320 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-25 03:07:17,818 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-25 03:07:17,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 03:07:17 BoogieIcfgContainer [2018-01-25 03:07:17,819 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-25 03:07:17,820 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-25 03:07:17,820 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-25 03:07:17,822 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-25 03:07:17,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.01 03:07:16" (1/3) ... [2018-01-25 03:07:17,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c44a9da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 03:07:17, skipping insertion in model container [2018-01-25 03:07:17,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:07:17" (2/3) ... [2018-01-25 03:07:17,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c44a9da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 03:07:17, skipping insertion in model container [2018-01-25 03:07:17,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 03:07:17" (3/3) ... [2018-01-25 03:07:17,827 INFO L105 eAbstractionObserver]: Analyzing ICFG tree_cnstr_true-valid-memsafety_false-termination.i [2018-01-25 03:07:17,834 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-25 03:07:17,842 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 55 error locations. [2018-01-25 03:07:17,891 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-25 03:07:17,891 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-25 03:07:17,891 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-25 03:07:17,891 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-25 03:07:17,891 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-25 03:07:17,891 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-25 03:07:17,892 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-25 03:07:17,892 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-25 03:07:17,893 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-25 03:07:17,927 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states. [2018-01-25 03:07:17,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-25 03:07:17,937 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:07:17,938 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:07:17,938 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr54EnsuresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:07:17,943 INFO L82 PathProgramCache]: Analyzing trace with hash 1341839433, now seen corresponding path program 1 times [2018-01-25 03:07:17,947 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:07:17,996 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:07:17,996 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:07:17,997 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:07:17,997 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:07:18,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:07:18,058 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:07:18,174 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 03:07:18,177 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:07:18,177 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 03:07:18,178 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:07:18,181 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 03:07:18,197 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 03:07:18,197 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 03:07:18,200 INFO L87 Difference]: Start difference. First operand 130 states. Second operand 4 states. [2018-01-25 03:07:18,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:07:18,622 INFO L93 Difference]: Finished difference Result 293 states and 335 transitions. [2018-01-25 03:07:18,622 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-25 03:07:18,623 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-25 03:07:18,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:07:18,634 INFO L225 Difference]: With dead ends: 293 [2018-01-25 03:07:18,634 INFO L226 Difference]: Without dead ends: 170 [2018-01-25 03:07:18,637 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 03:07:18,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2018-01-25 03:07:18,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 125. [2018-01-25 03:07:18,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-01-25 03:07:18,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 138 transitions. [2018-01-25 03:07:18,676 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 138 transitions. Word has length 8 [2018-01-25 03:07:18,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:07:18,676 INFO L432 AbstractCegarLoop]: Abstraction has 125 states and 138 transitions. [2018-01-25 03:07:18,677 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 03:07:18,677 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 138 transitions. [2018-01-25 03:07:18,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-25 03:07:18,677 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:07:18,677 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:07:18,677 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr54EnsuresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:07:18,677 INFO L82 PathProgramCache]: Analyzing trace with hash 1341839434, now seen corresponding path program 1 times [2018-01-25 03:07:18,678 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:07:18,678 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:07:18,679 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:07:18,679 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:07:18,679 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:07:18,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:07:18,702 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:07:18,789 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 03:07:18,790 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:07:18,790 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 03:07:18,790 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:07:18,792 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 03:07:18,792 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 03:07:18,792 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 03:07:18,793 INFO L87 Difference]: Start difference. First operand 125 states and 138 transitions. Second operand 4 states. [2018-01-25 03:07:19,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:07:19,297 INFO L93 Difference]: Finished difference Result 167 states and 185 transitions. [2018-01-25 03:07:19,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-25 03:07:19,297 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-25 03:07:19,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:07:19,301 INFO L225 Difference]: With dead ends: 167 [2018-01-25 03:07:19,302 INFO L226 Difference]: Without dead ends: 165 [2018-01-25 03:07:19,303 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 03:07:19,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2018-01-25 03:07:19,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 123. [2018-01-25 03:07:19,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-01-25 03:07:19,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 136 transitions. [2018-01-25 03:07:19,312 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 136 transitions. Word has length 8 [2018-01-25 03:07:19,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:07:19,312 INFO L432 AbstractCegarLoop]: Abstraction has 123 states and 136 transitions. [2018-01-25 03:07:19,312 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 03:07:19,313 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 136 transitions. [2018-01-25 03:07:19,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-01-25 03:07:19,313 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:07:19,313 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:07:19,313 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr54EnsuresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:07:19,313 INFO L82 PathProgramCache]: Analyzing trace with hash 557054198, now seen corresponding path program 1 times [2018-01-25 03:07:19,314 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:07:19,314 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:07:19,315 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:07:19,315 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:07:19,315 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:07:19,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:07:19,328 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:07:19,355 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 03:07:19,355 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:07:19,355 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 03:07:19,358 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:07:19,359 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 03:07:19,359 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 03:07:19,359 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 03:07:19,359 INFO L87 Difference]: Start difference. First operand 123 states and 136 transitions. Second operand 4 states. [2018-01-25 03:07:19,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:07:19,516 INFO L93 Difference]: Finished difference Result 172 states and 196 transitions. [2018-01-25 03:07:19,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 03:07:19,516 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-01-25 03:07:19,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:07:19,518 INFO L225 Difference]: With dead ends: 172 [2018-01-25 03:07:19,518 INFO L226 Difference]: Without dead ends: 154 [2018-01-25 03:07:19,519 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 03:07:19,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2018-01-25 03:07:19,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 113. [2018-01-25 03:07:19,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-01-25 03:07:19,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 129 transitions. [2018-01-25 03:07:19,532 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 129 transitions. Word has length 14 [2018-01-25 03:07:19,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:07:19,532 INFO L432 AbstractCegarLoop]: Abstraction has 113 states and 129 transitions. [2018-01-25 03:07:19,532 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 03:07:19,533 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 129 transitions. [2018-01-25 03:07:19,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-01-25 03:07:19,533 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:07:19,533 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:07:19,534 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr54EnsuresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:07:19,534 INFO L82 PathProgramCache]: Analyzing trace with hash 557054199, now seen corresponding path program 1 times [2018-01-25 03:07:19,534 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:07:19,535 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:07:19,536 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:07:19,536 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:07:19,536 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:07:19,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:07:19,553 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:07:19,632 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 03:07:19,632 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:07:19,632 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 03:07:19,633 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:07:19,633 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 03:07:19,633 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 03:07:19,633 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 03:07:19,633 INFO L87 Difference]: Start difference. First operand 113 states and 129 transitions. Second operand 5 states. [2018-01-25 03:07:19,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:07:19,923 INFO L93 Difference]: Finished difference Result 251 states and 285 transitions. [2018-01-25 03:07:19,923 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 03:07:19,924 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-01-25 03:07:19,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:07:19,926 INFO L225 Difference]: With dead ends: 251 [2018-01-25 03:07:19,926 INFO L226 Difference]: Without dead ends: 233 [2018-01-25 03:07:19,926 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-25 03:07:19,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2018-01-25 03:07:19,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 182. [2018-01-25 03:07:19,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2018-01-25 03:07:19,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 240 transitions. [2018-01-25 03:07:19,948 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 240 transitions. Word has length 14 [2018-01-25 03:07:19,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:07:19,949 INFO L432 AbstractCegarLoop]: Abstraction has 182 states and 240 transitions. [2018-01-25 03:07:19,949 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 03:07:19,949 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 240 transitions. [2018-01-25 03:07:19,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-01-25 03:07:19,950 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:07:19,950 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:07:19,950 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr54EnsuresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:07:19,950 INFO L82 PathProgramCache]: Analyzing trace with hash -505191267, now seen corresponding path program 1 times [2018-01-25 03:07:19,950 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:07:19,951 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:07:19,952 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:07:19,952 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:07:19,952 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:07:19,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:07:19,967 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:07:19,998 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 03:07:19,998 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:07:19,998 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 03:07:19,998 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:07:19,999 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 03:07:19,999 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 03:07:19,999 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 03:07:19,999 INFO L87 Difference]: Start difference. First operand 182 states and 240 transitions. Second operand 4 states. [2018-01-25 03:07:20,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:07:20,025 INFO L93 Difference]: Finished difference Result 198 states and 242 transitions. [2018-01-25 03:07:20,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-25 03:07:20,026 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2018-01-25 03:07:20,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:07:20,028 INFO L225 Difference]: With dead ends: 198 [2018-01-25 03:07:20,028 INFO L226 Difference]: Without dead ends: 195 [2018-01-25 03:07:20,029 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 03:07:20,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-01-25 03:07:20,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 182. [2018-01-25 03:07:20,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2018-01-25 03:07:20,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 238 transitions. [2018-01-25 03:07:20,051 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 238 transitions. Word has length 17 [2018-01-25 03:07:20,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:07:20,052 INFO L432 AbstractCegarLoop]: Abstraction has 182 states and 238 transitions. [2018-01-25 03:07:20,052 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 03:07:20,052 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 238 transitions. [2018-01-25 03:07:20,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-25 03:07:20,053 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:07:20,053 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:07:20,053 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr54EnsuresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:07:20,054 INFO L82 PathProgramCache]: Analyzing trace with hash -605576120, now seen corresponding path program 1 times [2018-01-25 03:07:20,054 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:07:20,057 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:07:20,057 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:07:20,057 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:07:20,057 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:07:20,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:07:20,075 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:07:20,105 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 03:07:20,105 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:07:20,106 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 03:07:20,106 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:07:20,106 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-25 03:07:20,106 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-25 03:07:20,107 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-25 03:07:20,107 INFO L87 Difference]: Start difference. First operand 182 states and 238 transitions. Second operand 3 states. [2018-01-25 03:07:20,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:07:20,119 INFO L93 Difference]: Finished difference Result 261 states and 355 transitions. [2018-01-25 03:07:20,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-25 03:07:20,120 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2018-01-25 03:07:20,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:07:20,121 INFO L225 Difference]: With dead ends: 261 [2018-01-25 03:07:20,121 INFO L226 Difference]: Without dead ends: 185 [2018-01-25 03:07:20,122 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-25 03:07:20,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2018-01-25 03:07:20,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2018-01-25 03:07:20,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-01-25 03:07:20,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 241 transitions. [2018-01-25 03:07:20,132 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 241 transitions. Word has length 22 [2018-01-25 03:07:20,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:07:20,132 INFO L432 AbstractCegarLoop]: Abstraction has 185 states and 241 transitions. [2018-01-25 03:07:20,132 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-25 03:07:20,132 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 241 transitions. [2018-01-25 03:07:20,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-25 03:07:20,133 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:07:20,133 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] [2018-01-25 03:07:20,133 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr54EnsuresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:07:20,134 INFO L82 PathProgramCache]: Analyzing trace with hash 927704743, now seen corresponding path program 1 times [2018-01-25 03:07:20,134 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:07:20,135 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:07:20,135 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:07:20,135 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:07:20,135 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:07:20,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:07:20,150 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:07:20,177 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:07:20,177 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:07:20,177 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 03:07:20,177 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:07:20,178 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-25 03:07:20,178 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-25 03:07:20,178 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-25 03:07:20,178 INFO L87 Difference]: Start difference. First operand 185 states and 241 transitions. Second operand 3 states. [2018-01-25 03:07:20,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:07:20,193 INFO L93 Difference]: Finished difference Result 363 states and 477 transitions. [2018-01-25 03:07:20,194 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-25 03:07:20,194 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2018-01-25 03:07:20,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:07:20,196 INFO L225 Difference]: With dead ends: 363 [2018-01-25 03:07:20,196 INFO L226 Difference]: Without dead ends: 187 [2018-01-25 03:07:20,197 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-25 03:07:20,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-01-25 03:07:20,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2018-01-25 03:07:20,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-01-25 03:07:20,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 243 transitions. [2018-01-25 03:07:20,208 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 243 transitions. Word has length 22 [2018-01-25 03:07:20,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:07:20,208 INFO L432 AbstractCegarLoop]: Abstraction has 187 states and 243 transitions. [2018-01-25 03:07:20,208 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-25 03:07:20,208 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 243 transitions. [2018-01-25 03:07:20,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-01-25 03:07:20,209 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:07:20,209 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:07:20,209 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr54EnsuresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:07:20,210 INFO L82 PathProgramCache]: Analyzing trace with hash -2088156413, now seen corresponding path program 1 times [2018-01-25 03:07:20,210 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:07:20,210 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:07:20,210 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:07:20,211 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:07:20,211 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:07:20,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:07:20,224 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:07:20,253 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 03:07:20,254 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:07:20,254 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 03:07:20,254 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:07:20,254 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-25 03:07:20,254 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-25 03:07:20,255 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-25 03:07:20,255 INFO L87 Difference]: Start difference. First operand 187 states and 243 transitions. Second operand 3 states. [2018-01-25 03:07:20,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:07:20,308 INFO L93 Difference]: Finished difference Result 280 states and 367 transitions. [2018-01-25 03:07:20,308 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-25 03:07:20,308 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2018-01-25 03:07:20,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:07:20,309 INFO L225 Difference]: With dead ends: 280 [2018-01-25 03:07:20,309 INFO L226 Difference]: Without dead ends: 201 [2018-01-25 03:07:20,310 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-25 03:07:20,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2018-01-25 03:07:20,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 190. [2018-01-25 03:07:20,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2018-01-25 03:07:20,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 243 transitions. [2018-01-25 03:07:20,319 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 243 transitions. Word has length 24 [2018-01-25 03:07:20,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:07:20,319 INFO L432 AbstractCegarLoop]: Abstraction has 190 states and 243 transitions. [2018-01-25 03:07:20,319 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-25 03:07:20,319 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 243 transitions. [2018-01-25 03:07:20,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-01-25 03:07:20,320 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:07:20,320 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] [2018-01-25 03:07:20,320 INFO L371 AbstractCegarLoop]: === Iteration 9 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr54EnsuresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:07:20,321 INFO L82 PathProgramCache]: Analyzing trace with hash 1439697764, now seen corresponding path program 1 times [2018-01-25 03:07:20,321 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:07:20,322 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:07:20,322 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:07:20,322 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:07:20,322 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:07:20,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:07:20,338 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:07:20,526 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:07:20,527 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:07:20,527 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-25 03:07:20,527 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:07:20,527 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-25 03:07:20,528 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-25 03:07:20,528 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-25 03:07:20,528 INFO L87 Difference]: Start difference. First operand 190 states and 243 transitions. Second operand 6 states. [2018-01-25 03:07:20,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:07:20,971 INFO L93 Difference]: Finished difference Result 471 states and 593 transitions. [2018-01-25 03:07:20,971 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-25 03:07:20,971 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2018-01-25 03:07:20,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:07:20,973 INFO L225 Difference]: With dead ends: 471 [2018-01-25 03:07:20,973 INFO L226 Difference]: Without dead ends: 290 [2018-01-25 03:07:20,974 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-01-25 03:07:20,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2018-01-25 03:07:20,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 206. [2018-01-25 03:07:20,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2018-01-25 03:07:20,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 264 transitions. [2018-01-25 03:07:20,988 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 264 transitions. Word has length 24 [2018-01-25 03:07:20,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:07:20,989 INFO L432 AbstractCegarLoop]: Abstraction has 206 states and 264 transitions. [2018-01-25 03:07:20,989 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-25 03:07:20,989 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 264 transitions. [2018-01-25 03:07:20,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-25 03:07:20,990 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:07:20,990 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:07:20,990 INFO L371 AbstractCegarLoop]: === Iteration 10 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr54EnsuresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:07:20,990 INFO L82 PathProgramCache]: Analyzing trace with hash 1566782653, now seen corresponding path program 1 times [2018-01-25 03:07:20,991 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:07:20,991 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:07:20,992 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:07:20,992 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:07:20,992 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:07:21,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:07:21,004 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:07:21,041 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 03:07:21,041 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:07:21,041 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 03:07:21,041 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:07:21,042 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 03:07:21,042 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 03:07:21,042 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 03:07:21,042 INFO L87 Difference]: Start difference. First operand 206 states and 264 transitions. Second operand 5 states. [2018-01-25 03:07:21,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:07:21,286 INFO L93 Difference]: Finished difference Result 330 states and 414 transitions. [2018-01-25 03:07:21,286 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 03:07:21,286 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2018-01-25 03:07:21,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:07:21,288 INFO L225 Difference]: With dead ends: 330 [2018-01-25 03:07:21,289 INFO L226 Difference]: Without dead ends: 329 [2018-01-25 03:07:21,289 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-25 03:07:21,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2018-01-25 03:07:21,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 205. [2018-01-25 03:07:21,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-01-25 03:07:21,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 262 transitions. [2018-01-25 03:07:21,303 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 262 transitions. Word has length 25 [2018-01-25 03:07:21,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:07:21,303 INFO L432 AbstractCegarLoop]: Abstraction has 205 states and 262 transitions. [2018-01-25 03:07:21,303 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 03:07:21,303 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 262 transitions. [2018-01-25 03:07:21,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-25 03:07:21,304 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:07:21,304 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:07:21,305 INFO L371 AbstractCegarLoop]: === Iteration 11 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr54EnsuresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:07:21,305 INFO L82 PathProgramCache]: Analyzing trace with hash 1566782654, now seen corresponding path program 1 times [2018-01-25 03:07:21,305 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:07:21,306 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:07:21,306 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:07:21,306 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:07:21,306 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:07:21,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:07:21,317 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:07:21,387 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 03:07:21,387 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:07:21,387 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 03:07:21,387 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:07:21,388 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 03:07:21,388 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 03:07:21,388 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 03:07:21,388 INFO L87 Difference]: Start difference. First operand 205 states and 262 transitions. Second operand 5 states. [2018-01-25 03:07:21,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:07:21,877 INFO L93 Difference]: Finished difference Result 365 states and 471 transitions. [2018-01-25 03:07:21,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 03:07:21,877 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2018-01-25 03:07:21,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:07:21,879 INFO L225 Difference]: With dead ends: 365 [2018-01-25 03:07:21,879 INFO L226 Difference]: Without dead ends: 364 [2018-01-25 03:07:21,879 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-25 03:07:21,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2018-01-25 03:07:21,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 204. [2018-01-25 03:07:21,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2018-01-25 03:07:21,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 260 transitions. [2018-01-25 03:07:21,895 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 260 transitions. Word has length 25 [2018-01-25 03:07:21,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:07:21,895 INFO L432 AbstractCegarLoop]: Abstraction has 204 states and 260 transitions. [2018-01-25 03:07:21,895 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 03:07:21,895 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 260 transitions. [2018-01-25 03:07:21,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-01-25 03:07:21,896 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:07:21,896 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] [2018-01-25 03:07:21,897 INFO L371 AbstractCegarLoop]: === Iteration 12 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr54EnsuresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:07:21,897 INFO L82 PathProgramCache]: Analyzing trace with hash -554334541, now seen corresponding path program 1 times [2018-01-25 03:07:21,897 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:07:21,898 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:07:21,898 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:07:21,898 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:07:21,898 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:07:21,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:07:21,908 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:07:22,112 WARN L146 SmtUtils]: Spent 121ms on a formula simplification. DAG size of input: 20 DAG size of output 16 [2018-01-25 03:07:22,157 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:07:22,157 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:07:22,158 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-25 03:07:22,158 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:07:22,158 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-25 03:07:22,159 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-25 03:07:22,159 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-25 03:07:22,159 INFO L87 Difference]: Start difference. First operand 204 states and 260 transitions. Second operand 6 states. [2018-01-25 03:07:22,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:07:22,539 INFO L93 Difference]: Finished difference Result 369 states and 467 transitions. [2018-01-25 03:07:22,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-25 03:07:22,539 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2018-01-25 03:07:22,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:07:22,541 INFO L225 Difference]: With dead ends: 369 [2018-01-25 03:07:22,542 INFO L226 Difference]: Without dead ends: 287 [2018-01-25 03:07:22,542 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-01-25 03:07:22,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2018-01-25 03:07:22,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 242. [2018-01-25 03:07:22,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2018-01-25 03:07:22,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 319 transitions. [2018-01-25 03:07:22,560 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 319 transitions. Word has length 26 [2018-01-25 03:07:22,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:07:22,560 INFO L432 AbstractCegarLoop]: Abstraction has 242 states and 319 transitions. [2018-01-25 03:07:22,560 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-25 03:07:22,561 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 319 transitions. [2018-01-25 03:07:22,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-01-25 03:07:22,564 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:07:22,564 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] [2018-01-25 03:07:22,564 INFO L371 AbstractCegarLoop]: === Iteration 13 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr54EnsuresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:07:22,564 INFO L82 PathProgramCache]: Analyzing trace with hash 1703794537, now seen corresponding path program 1 times [2018-01-25 03:07:22,564 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:07:22,565 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:07:22,565 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:07:22,566 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:07:22,566 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:07:22,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:07:22,592 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:07:22,880 WARN L146 SmtUtils]: Spent 156ms on a formula simplification. DAG size of input: 11 DAG size of output 9 [2018-01-25 03:07:23,022 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:07:23,023 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-25 03:07:23,023 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-25 03:07:23,024 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 29 with the following transitions: [2018-01-25 03:07:23,028 INFO L201 CegarAbsIntRunner]: [0], [1], [5], [6], [7], [10], [16], [18], [21], [136], [140], [144], [146], [150], [152], [155], [160], [161], [164], [168], [210], [212], [218], [220], [221], [222], [223] [2018-01-25 03:07:23,080 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-25 03:07:23,080 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