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.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-rb-cnstr_1_true-unreach-call_true-valid-memsafety.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 16:09:50,958 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 16:09:50,959 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 16:09:50,973 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 16:09:50,973 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 16:09:50,974 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 16:09:50,975 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 16:09:50,977 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 16:09:50,979 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 16:09:50,980 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 16:09:50,981 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 16:09:50,981 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 16:09:50,981 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 16:09:50,982 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 16:09:50,983 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 16:09:50,985 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 16:09:50,987 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 16:09:50,989 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 16:09:50,991 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 16:09:50,992 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 16:09:50,994 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-24 16:09:50,994 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-24 16:09:50,995 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-24 16:09:50,996 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-24 16:09:50,996 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-24 16:09:50,998 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-24 16:09:50,998 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-24 16:09:50,998 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-24 16:09:50,999 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-24 16:09:50,999 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 16:09:51,000 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 16:09:51,000 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.epf [2018-01-24 16:09:51,010 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 16:09:51,010 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 16:09:51,011 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 16:09:51,011 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 16:09:51,011 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 16:09:51,012 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 16:09:51,012 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 16:09:51,012 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 16:09:51,013 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 16:09:51,013 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 16:09:51,013 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 16:09:51,013 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 16:09:51,013 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 16:09:51,014 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 16:09:51,014 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 16:09:51,014 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 16:09:51,014 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 16:09:51,014 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 16:09:51,015 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 16:09:51,015 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 16:09:51,015 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 16:09:51,015 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 16:09:51,015 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 16:09:51,016 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 16:09:51,016 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 16:09:51,016 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 16:09:51,016 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 16:09:51,016 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 16:09:51,017 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-24 16:09:51,017 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 16:09:51,017 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 16:09:51,017 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 16:09:51,017 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-24 16:09:51,018 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 16:09:51,018 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 16:09:51,053 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 16:09:51,065 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 16:09:51,069 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 16:09:51,071 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 16:09:51,072 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 16:09:51,072 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-rb-cnstr_1_true-unreach-call_true-valid-memsafety.i [2018-01-24 16:09:51,244 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 16:09:51,250 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 16:09:51,251 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 16:09:51,251 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 16:09:51,256 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 16:09:51,256 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 04:09:51" (1/1) ... [2018-01-24 16:09:51,259 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30b6da95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:09:51, skipping insertion in model container [2018-01-24 16:09:51,259 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 04:09:51" (1/1) ... [2018-01-24 16:09:51,271 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 16:09:51,313 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 16:09:51,426 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 16:09:51,446 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 16:09:51,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:09:51 WrapperNode [2018-01-24 16:09:51,457 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 16:09:51,458 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 16:09:51,458 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 16:09:51,458 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 16:09:51,474 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:09:51" (1/1) ... [2018-01-24 16:09:51,474 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:09:51" (1/1) ... [2018-01-24 16:09:51,484 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:09:51" (1/1) ... [2018-01-24 16:09:51,484 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:09:51" (1/1) ... [2018-01-24 16:09:51,490 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:09:51" (1/1) ... [2018-01-24 16:09:51,496 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:09:51" (1/1) ... [2018-01-24 16:09:51,497 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:09:51" (1/1) ... [2018-01-24 16:09:51,499 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 16:09:51,500 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 16:09:51,500 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 16:09:51,500 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 16:09:51,501 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:09:51" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 16:09:51,551 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 16:09:51,552 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 16:09:51,552 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 16:09:51,552 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-24 16:09:51,552 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-24 16:09:51,552 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-24 16:09:51,552 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-24 16:09:51,553 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 16:09:51,553 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 16:09:51,553 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 16:09:51,553 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-24 16:09:51,553 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-24 16:09:51,553 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 16:09:51,554 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-24 16:09:51,554 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 16:09:51,554 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 16:09:51,554 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 16:09:52,082 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 16:09:52,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 04:09:52 BoogieIcfgContainer [2018-01-24 16:09:52,083 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 16:09:52,084 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-24 16:09:52,084 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-24 16:09:52,087 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-24 16:09:52,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.01 04:09:51" (1/3) ... [2018-01-24 16:09:52,088 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67b5e3f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 04:09:52, skipping insertion in model container [2018-01-24 16:09:52,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:09:51" (2/3) ... [2018-01-24 16:09:52,089 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67b5e3f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 04:09:52, skipping insertion in model container [2018-01-24 16:09:52,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 04:09:52" (3/3) ... [2018-01-24 16:09:52,091 INFO L105 eAbstractionObserver]: Analyzing ICFG dll-rb-cnstr_1_true-unreach-call_true-valid-memsafety.i [2018-01-24 16:09:52,100 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-24 16:09:52,108 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 61 error locations. [2018-01-24 16:09:52,160 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-24 16:09:52,160 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-24 16:09:52,160 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-24 16:09:52,160 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-24 16:09:52,160 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-24 16:09:52,161 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-24 16:09:52,161 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-24 16:09:52,161 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-24 16:09:52,162 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-24 16:09:52,186 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states. [2018-01-24 16:09:52,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-24 16:09:52,193 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 16:09:52,194 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 16:09:52,194 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr60EnsuresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 16:09:52,199 INFO L82 PathProgramCache]: Analyzing trace with hash 1532119549, now seen corresponding path program 1 times [2018-01-24 16:09:52,202 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 16:09:52,267 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:09:52,268 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 16:09:52,268 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:09:52,268 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 16:09:52,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 16:09:52,327 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 16:09:52,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 16:09:52,418 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 16:09:52,418 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 16:09:52,418 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 16:09:52,420 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 16:09:52,493 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 16:09:52,494 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 16:09:52,495 INFO L87 Difference]: Start difference. First operand 149 states. Second operand 4 states. [2018-01-24 16:09:52,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 16:09:52,718 INFO L93 Difference]: Finished difference Result 296 states and 366 transitions. [2018-01-24 16:09:52,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 16:09:52,720 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-24 16:09:52,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 16:09:52,730 INFO L225 Difference]: With dead ends: 296 [2018-01-24 16:09:52,730 INFO L226 Difference]: Without dead ends: 157 [2018-01-24 16:09:52,733 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-24 16:09:52,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-01-24 16:09:52,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 142. [2018-01-24 16:09:52,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2018-01-24 16:09:52,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 149 transitions. [2018-01-24 16:09:52,771 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 149 transitions. Word has length 8 [2018-01-24 16:09:52,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 16:09:52,771 INFO L432 AbstractCegarLoop]: Abstraction has 142 states and 149 transitions. [2018-01-24 16:09:52,771 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 16:09:52,772 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 149 transitions. [2018-01-24 16:09:52,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-24 16:09:52,772 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 16:09:52,772 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 16:09:52,772 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr60EnsuresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 16:09:52,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1532119550, now seen corresponding path program 1 times [2018-01-24 16:09:52,773 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 16:09:52,774 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:09:52,774 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 16:09:52,775 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:09:52,775 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 16:09:52,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 16:09:52,789 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 16:09:52,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 16:09:52,867 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 16:09:52,867 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 16:09:52,867 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 16:09:52,868 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 16:09:52,869 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 16:09:52,869 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 16:09:52,869 INFO L87 Difference]: Start difference. First operand 142 states and 149 transitions. Second operand 4 states. [2018-01-24 16:09:53,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 16:09:53,133 INFO L93 Difference]: Finished difference Result 162 states and 168 transitions. [2018-01-24 16:09:53,133 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 16:09:53,134 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-24 16:09:53,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 16:09:53,135 INFO L225 Difference]: With dead ends: 162 [2018-01-24 16:09:53,135 INFO L226 Difference]: Without dead ends: 154 [2018-01-24 16:09:53,136 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-24 16:09:53,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2018-01-24 16:09:53,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 146. [2018-01-24 16:09:53,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2018-01-24 16:09:53,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 153 transitions. [2018-01-24 16:09:53,148 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 153 transitions. Word has length 8 [2018-01-24 16:09:53,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 16:09:53,148 INFO L432 AbstractCegarLoop]: Abstraction has 146 states and 153 transitions. [2018-01-24 16:09:53,148 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 16:09:53,148 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 153 transitions. [2018-01-24 16:09:53,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-01-24 16:09:53,149 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 16:09:53,149 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 16:09:53,149 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr60EnsuresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 16:09:53,150 INFO L82 PathProgramCache]: Analyzing trace with hash 579798922, now seen corresponding path program 1 times [2018-01-24 16:09:53,150 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 16:09:53,151 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:09:53,151 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 16:09:53,151 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:09:53,152 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 16:09:53,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 16:09:53,173 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 16:09:53,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 16:09:53,226 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 16:09:53,226 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 16:09:53,226 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 16:09:53,227 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 16:09:53,227 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 16:09:53,227 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 16:09:53,227 INFO L87 Difference]: Start difference. First operand 146 states and 153 transitions. Second operand 4 states. [2018-01-24 16:09:53,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 16:09:53,345 INFO L93 Difference]: Finished difference Result 165 states and 173 transitions. [2018-01-24 16:09:53,345 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 16:09:53,345 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2018-01-24 16:09:53,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 16:09:53,346 INFO L225 Difference]: With dead ends: 165 [2018-01-24 16:09:53,346 INFO L226 Difference]: Without dead ends: 149 [2018-01-24 16:09:53,347 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-24 16:09:53,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-01-24 16:09:53,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 134. [2018-01-24 16:09:53,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2018-01-24 16:09:53,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 143 transitions. [2018-01-24 16:09:53,358 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 143 transitions. Word has length 16 [2018-01-24 16:09:53,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 16:09:53,359 INFO L432 AbstractCegarLoop]: Abstraction has 134 states and 143 transitions. [2018-01-24 16:09:53,359 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 16:09:53,359 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 143 transitions. [2018-01-24 16:09:53,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-01-24 16:09:53,359 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 16:09:53,360 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 16:09:53,360 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr60EnsuresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 16:09:53,360 INFO L82 PathProgramCache]: Analyzing trace with hash 579798923, now seen corresponding path program 1 times [2018-01-24 16:09:53,360 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 16:09:53,361 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:09:53,361 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 16:09:53,362 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:09:53,362 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 16:09:53,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 16:09:53,377 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 16:09:53,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 16:09:53,481 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 16:09:53,482 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-24 16:09:53,482 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 16:09:53,482 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-24 16:09:53,482 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-24 16:09:53,482 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-01-24 16:09:53,482 INFO L87 Difference]: Start difference. First operand 134 states and 143 transitions. Second operand 7 states. [2018-01-24 16:09:53,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 16:09:53,794 INFO L93 Difference]: Finished difference Result 177 states and 187 transitions. [2018-01-24 16:09:53,794 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 16:09:53,794 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2018-01-24 16:09:53,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 16:09:53,796 INFO L225 Difference]: With dead ends: 177 [2018-01-24 16:09:53,796 INFO L226 Difference]: Without dead ends: 170 [2018-01-24 16:09:53,796 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-01-24 16:09:53,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2018-01-24 16:09:53,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 145. [2018-01-24 16:09:53,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-01-24 16:09:53,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 157 transitions. [2018-01-24 16:09:53,805 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 157 transitions. Word has length 16 [2018-01-24 16:09:53,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 16:09:53,805 INFO L432 AbstractCegarLoop]: Abstraction has 145 states and 157 transitions. [2018-01-24 16:09:53,805 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-24 16:09:53,806 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 157 transitions. [2018-01-24 16:09:53,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-24 16:09:53,806 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 16:09:53,807 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 16:09:53,807 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr60EnsuresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 16:09:53,808 INFO L82 PathProgramCache]: Analyzing trace with hash -1158984530, now seen corresponding path program 1 times [2018-01-24 16:09:53,808 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 16:09:53,809 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:09:53,809 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 16:09:53,810 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:09:53,810 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 16:09:53,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 16:09:53,826 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 16:09:53,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 16:09:53,904 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 16:09:53,905 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 16:09:53,905 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 16:09:53,905 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 16:09:53,905 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 16:09:53,906 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 16:09:53,906 INFO L87 Difference]: Start difference. First operand 145 states and 157 transitions. Second operand 5 states. [2018-01-24 16:09:54,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 16:09:54,180 INFO L93 Difference]: Finished difference Result 216 states and 235 transitions. [2018-01-24 16:09:54,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 16:09:54,180 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2018-01-24 16:09:54,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 16:09:54,182 INFO L225 Difference]: With dead ends: 216 [2018-01-24 16:09:54,182 INFO L226 Difference]: Without dead ends: 215 [2018-01-24 16:09:54,182 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 [2018-01-24 16:09:54,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2018-01-24 16:09:54,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 144. [2018-01-24 16:09:54,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2018-01-24 16:09:54,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 155 transitions. [2018-01-24 16:09:54,192 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 155 transitions. Word has length 18 [2018-01-24 16:09:54,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 16:09:54,193 INFO L432 AbstractCegarLoop]: Abstraction has 144 states and 155 transitions. [2018-01-24 16:09:54,193 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 16:09:54,193 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 155 transitions. [2018-01-24 16:09:54,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-24 16:09:54,194 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 16:09:54,194 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 16:09:54,194 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr60EnsuresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 16:09:54,194 INFO L82 PathProgramCache]: Analyzing trace with hash -1158984531, now seen corresponding path program 1 times [2018-01-24 16:09:54,194 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 16:09:54,196 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:09:54,196 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 16:09:54,196 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:09:54,196 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 16:09:54,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 16:09:54,210 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 16:09:54,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 16:09:54,240 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 16:09:54,240 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 16:09:54,240 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 16:09:54,241 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 16:09:54,241 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 16:09:54,241 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 16:09:54,241 INFO L87 Difference]: Start difference. First operand 144 states and 155 transitions. Second operand 5 states. [2018-01-24 16:09:54,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 16:09:54,393 INFO L93 Difference]: Finished difference Result 192 states and 208 transitions. [2018-01-24 16:09:54,394 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 16:09:54,394 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2018-01-24 16:09:54,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 16:09:54,395 INFO L225 Difference]: With dead ends: 192 [2018-01-24 16:09:54,395 INFO L226 Difference]: Without dead ends: 191 [2018-01-24 16:09:54,395 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-24 16:09:54,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-01-24 16:09:54,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 143. [2018-01-24 16:09:54,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-01-24 16:09:54,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 153 transitions. [2018-01-24 16:09:54,403 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 153 transitions. Word has length 18 [2018-01-24 16:09:54,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 16:09:54,404 INFO L432 AbstractCegarLoop]: Abstraction has 143 states and 153 transitions. [2018-01-24 16:09:54,404 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 16:09:54,404 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 153 transitions. [2018-01-24 16:09:54,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-24 16:09:54,405 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 16:09:54,405 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] [2018-01-24 16:09:54,405 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr60EnsuresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 16:09:54,405 INFO L82 PathProgramCache]: Analyzing trace with hash -2048091345, now seen corresponding path program 1 times [2018-01-24 16:09:54,406 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 16:09:54,407 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:09:54,407 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 16:09:54,407 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:09:54,407 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 16:09:54,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 16:09:54,425 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 16:09:54,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 16:09:54,536 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 16:09:54,536 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-24 16:09:54,536 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 16:09:54,537 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-24 16:09:54,537 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-24 16:09:54,537 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-01-24 16:09:54,538 INFO L87 Difference]: Start difference. First operand 143 states and 153 transitions. Second operand 9 states. [2018-01-24 16:09:54,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 16:09:54,821 INFO L93 Difference]: Finished difference Result 157 states and 167 transitions. [2018-01-24 16:09:54,822 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-24 16:09:54,822 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2018-01-24 16:09:54,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 16:09:54,823 INFO L225 Difference]: With dead ends: 157 [2018-01-24 16:09:54,823 INFO L226 Difference]: Without dead ends: 156 [2018-01-24 16:09:54,823 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2018-01-24 16:09:54,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2018-01-24 16:09:54,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 142. [2018-01-24 16:09:54,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2018-01-24 16:09:54,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 152 transitions. [2018-01-24 16:09:54,828 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 152 transitions. Word has length 22 [2018-01-24 16:09:54,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 16:09:54,829 INFO L432 AbstractCegarLoop]: Abstraction has 142 states and 152 transitions. [2018-01-24 16:09:54,829 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-24 16:09:54,829 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 152 transitions. [2018-01-24 16:09:54,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-24 16:09:54,829 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 16:09:54,830 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] [2018-01-24 16:09:54,830 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr60EnsuresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 16:09:54,830 INFO L82 PathProgramCache]: Analyzing trace with hash -2048091344, now seen corresponding path program 1 times [2018-01-24 16:09:54,830 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 16:09:54,831 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:09:54,831 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 16:09:54,831 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:09:54,831 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 16:09:54,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 16:09:54,846 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 16:09:54,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 16:09:54,995 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 16:09:54,995 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-01-24 16:09:54,996 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 16:09:54,996 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-24 16:09:54,996 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-24 16:09:54,996 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-01-24 16:09:54,996 INFO L87 Difference]: Start difference. First operand 142 states and 152 transitions. Second operand 10 states. [2018-01-24 16:09:55,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 16:09:55,717 INFO L93 Difference]: Finished difference Result 183 states and 194 transitions. [2018-01-24 16:09:55,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-24 16:09:55,718 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2018-01-24 16:09:55,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 16:09:55,719 INFO L225 Difference]: With dead ends: 183 [2018-01-24 16:09:55,719 INFO L226 Difference]: Without dead ends: 172 [2018-01-24 16:09:55,719 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=129, Invalid=291, Unknown=0, NotChecked=0, Total=420 [2018-01-24 16:09:55,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2018-01-24 16:09:55,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 147. [2018-01-24 16:09:55,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-01-24 16:09:55,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 157 transitions. [2018-01-24 16:09:55,724 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 157 transitions. Word has length 22 [2018-01-24 16:09:55,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 16:09:55,724 INFO L432 AbstractCegarLoop]: Abstraction has 147 states and 157 transitions. [2018-01-24 16:09:55,724 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-24 16:09:55,725 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 157 transitions. [2018-01-24 16:09:55,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-01-24 16:09:55,726 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 16:09:55,726 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 16:09:55,726 INFO L371 AbstractCegarLoop]: === Iteration 9 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr60EnsuresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 16:09:55,726 INFO L82 PathProgramCache]: Analyzing trace with hash -328401667, now seen corresponding path program 1 times [2018-01-24 16:09:55,726 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 16:09:55,727 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:09:55,728 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 16:09:55,728 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:09:55,728 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 16:09:55,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 16:09:55,737 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 16:09:55,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 16:09:55,789 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 16:09:55,789 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-24 16:09:55,789 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 16:09:55,789 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 16:09:55,789 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 16:09:55,789 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 16:09:55,790 INFO L87 Difference]: Start difference. First operand 147 states and 157 transitions. Second operand 5 states. [2018-01-24 16:09:56,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 16:09:56,079 INFO L93 Difference]: Finished difference Result 201 states and 215 transitions. [2018-01-24 16:09:56,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 16:09:56,080 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2018-01-24 16:09:56,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 16:09:56,081 INFO L225 Difference]: With dead ends: 201 [2018-01-24 16:09:56,081 INFO L226 Difference]: Without dead ends: 165 [2018-01-24 16:09:56,081 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-24 16:09:56,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2018-01-24 16:09:56,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 147. [2018-01-24 16:09:56,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-01-24 16:09:56,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 155 transitions. [2018-01-24 16:09:56,087 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 155 transitions. Word has length 28 [2018-01-24 16:09:56,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 16:09:56,087 INFO L432 AbstractCegarLoop]: Abstraction has 147 states and 155 transitions. [2018-01-24 16:09:56,087 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 16:09:56,087 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 155 transitions. [2018-01-24 16:09:56,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-24 16:09:56,088 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 16:09:56,089 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 16:09:56,089 INFO L371 AbstractCegarLoop]: === Iteration 10 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr60EnsuresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 16:09:56,089 INFO L82 PathProgramCache]: Analyzing trace with hash 143362465, now seen corresponding path program 1 times [2018-01-24 16:09:56,089 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 16:09:56,090 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:09:56,091 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 16:09:56,091 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:09:56,091 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 16:09:56,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 16:09:56,104 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 16:09:56,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 16:09:56,168 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 16:09:56,168 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 16:09:56,169 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 16:09:56,169 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 16:09:56,169 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 16:09:56,169 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 16:09:56,169 INFO L87 Difference]: Start difference. First operand 147 states and 155 transitions. Second operand 5 states. [2018-01-24 16:09:56,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 16:09:56,552 INFO L93 Difference]: Finished difference Result 219 states and 233 transitions. [2018-01-24 16:09:56,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 16:09:56,552 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2018-01-24 16:09:56,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 16:09:56,554 INFO L225 Difference]: With dead ends: 219 [2018-01-24 16:09:56,554 INFO L226 Difference]: Without dead ends: 218 [2018-01-24 16:09:56,554 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-24 16:09:56,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2018-01-24 16:09:56,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 146. [2018-01-24 16:09:56,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2018-01-24 16:09:56,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 154 transitions. [2018-01-24 16:09:56,560 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 154 transitions. Word has length 29 [2018-01-24 16:09:56,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 16:09:56,561 INFO L432 AbstractCegarLoop]: Abstraction has 146 states and 154 transitions. [2018-01-24 16:09:56,561 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 16:09:56,561 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 154 transitions. [2018-01-24 16:09:56,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-24 16:09:56,562 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 16:09:56,562 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 16:09:56,562 INFO L371 AbstractCegarLoop]: === Iteration 11 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr60EnsuresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 16:09:56,563 INFO L82 PathProgramCache]: Analyzing trace with hash 143362466, now seen corresponding path program 1 times [2018-01-24 16:09:56,563 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 16:09:56,564 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:09:56,564 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 16:09:56,564 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:09:56,564 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 16:09:56,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 16:09:56,580 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 16:09:56,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 16:09:56,652 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 16:09:56,652 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 16:09:56,652 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 16:09:56,653 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 16:09:56,653 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 16:09:56,653 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 16:09:56,653 INFO L87 Difference]: Start difference. First operand 146 states and 154 transitions. Second operand 5 states. [2018-01-24 16:09:56,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 16:09:56,844 INFO L93 Difference]: Finished difference Result 244 states and 259 transitions. [2018-01-24 16:09:56,845 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 16:09:56,845 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2018-01-24 16:09:56,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 16:09:56,846 INFO L225 Difference]: With dead ends: 244 [2018-01-24 16:09:56,847 INFO L226 Difference]: Without dead ends: 243 [2018-01-24 16:09:56,847 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 [2018-01-24 16:09:56,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-01-24 16:09:56,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 145. [2018-01-24 16:09:56,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-01-24 16:09:56,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 153 transitions. [2018-01-24 16:09:56,855 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 153 transitions. Word has length 29 [2018-01-24 16:09:56,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 16:09:56,856 INFO L432 AbstractCegarLoop]: Abstraction has 145 states and 153 transitions. [2018-01-24 16:09:56,856 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 16:09:56,856 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 153 transitions. [2018-01-24 16:09:56,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-01-24 16:09:56,857 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 16:09:56,857 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 16:09:56,857 INFO L371 AbstractCegarLoop]: === Iteration 12 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr60EnsuresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 16:09:56,858 INFO L82 PathProgramCache]: Analyzing trace with hash 1819547941, now seen corresponding path program 1 times [2018-01-24 16:09:56,858 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 16:09:56,859 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:09:56,859 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 16:09:56,859 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:09:56,859 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 16:09:56,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 16:09:56,870 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 16:09:57,024 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 16:09:57,024 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 16:09:57,024 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-24 16:09:57,025 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 32 with the following transitions: [2018-01-24 16:09:57,029 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [11], [15], [17], [20], [135], [139], [144], [148], [156], [157], [164], [168], [176], [182], [183], [184], [232], [234], [237], [287], [288], [292], [293], [294] [2018-01-24 16:09:57,081 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-24 16:09:57,081 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