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_precise.epf -i ../../../trunk/examples/svcomp/memsafety-ext/tree_dsw_true-valid-memsafety_false-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 23:42:33,841 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 23:42:33,843 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 23:42:33,857 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 23:42:33,857 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 23:42:33,859 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 23:42:33,860 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 23:42:33,861 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 23:42:33,863 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 23:42:33,863 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 23:42:33,864 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 23:42:33,864 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 23:42:33,865 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 23:42:33,866 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 23:42:33,866 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 23:42:33,869 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 23:42:33,871 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 23:42:33,874 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 23:42:33,875 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 23:42:33,876 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 23:42:33,879 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-24 23:42:33,879 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-24 23:42:33,879 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-24 23:42:33,881 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-24 23:42:33,881 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-24 23:42:33,883 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-24 23:42:33,883 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-24 23:42:33,884 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-24 23:42:33,884 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-24 23:42:33,884 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 23:42:33,885 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 23:42:33,885 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_precise.epf [2018-01-24 23:42:33,895 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 23:42:33,896 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 23:42:33,897 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 23:42:33,897 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 23:42:33,897 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 23:42:33,897 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-24 23:42:33,897 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 23:42:33,898 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 23:42:33,898 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 23:42:33,899 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 23:42:33,899 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 23:42:33,899 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 23:42:33,899 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 23:42:33,899 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 23:42:33,900 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 23:42:33,900 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 23:42:33,900 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 23:42:33,900 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 23:42:33,900 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 23:42:33,901 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 23:42:33,901 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 23:42:33,901 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 23:42:33,901 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 23:42:33,901 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 23:42:33,902 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 23:42:33,902 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 23:42:33,902 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 23:42:33,902 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 23:42:33,902 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 23:42:33,903 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-24 23:42:33,903 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 23:42:33,903 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 23:42:33,903 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 23:42:33,903 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-24 23:42:33,904 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 23:42:33,905 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 23:42:33,942 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 23:42:33,955 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 23:42:33,960 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 23:42:33,962 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 23:42:33,962 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 23:42:33,963 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/memsafety-ext/tree_dsw_true-valid-memsafety_false-termination.i [2018-01-24 23:42:34,147 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 23:42:34,196 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 23:42:34,197 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 23:42:34,197 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 23:42:34,202 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 23:42:34,203 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 11:42:34" (1/1) ... [2018-01-24 23:42:34,205 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b352040 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 11:42:34, skipping insertion in model container [2018-01-24 23:42:34,205 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 11:42:34" (1/1) ... [2018-01-24 23:42:34,218 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 23:42:34,257 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 23:42:34,376 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 23:42:34,401 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 23:42:34,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 11:42:34 WrapperNode [2018-01-24 23:42:34,412 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 23:42:34,413 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 23:42:34,413 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 23:42:34,413 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 23:42:34,428 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 11:42:34" (1/1) ... [2018-01-24 23:42:34,428 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 11:42:34" (1/1) ... [2018-01-24 23:42:34,439 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 11:42:34" (1/1) ... [2018-01-24 23:42:34,439 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 11:42:34" (1/1) ... [2018-01-24 23:42:34,446 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 11:42:34" (1/1) ... [2018-01-24 23:42:34,449 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 11:42:34" (1/1) ... [2018-01-24 23:42:34,451 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 11:42:34" (1/1) ... [2018-01-24 23:42:34,453 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 23:42:34,454 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 23:42:34,454 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 23:42:34,454 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 23:42:34,455 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 11:42:34" (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 23:42:34,505 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 23:42:34,505 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 23:42:34,505 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 23:42:34,505 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-24 23:42:34,505 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-24 23:42:34,505 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 23:42:34,506 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 23:42:34,506 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 23:42:34,506 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 23:42:34,506 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-24 23:42:34,506 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-24 23:42:34,506 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 23:42:34,506 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 23:42:34,506 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 23:42:35,051 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 23:42:35,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 11:42:35 BoogieIcfgContainer [2018-01-24 23:42:35,052 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 23:42:35,053 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-24 23:42:35,053 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-24 23:42:35,055 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-24 23:42:35,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.01 11:42:34" (1/3) ... [2018-01-24 23:42:35,057 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17b72c0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 11:42:35, skipping insertion in model container [2018-01-24 23:42:35,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 11:42:34" (2/3) ... [2018-01-24 23:42:35,057 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17b72c0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 11:42:35, skipping insertion in model container [2018-01-24 23:42:35,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 11:42:35" (3/3) ... [2018-01-24 23:42:35,060 INFO L105 eAbstractionObserver]: Analyzing ICFG tree_dsw_true-valid-memsafety_false-termination.i [2018-01-24 23:42:35,068 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-24 23:42:35,076 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 75 error locations. [2018-01-24 23:42:35,119 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-24 23:42:35,119 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-24 23:42:35,119 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-24 23:42:35,120 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-24 23:42:35,120 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-24 23:42:35,120 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-24 23:42:35,120 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-24 23:42:35,120 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-24 23:42:35,121 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-24 23:42:35,142 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states. [2018-01-24 23:42:35,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-24 23:42:35,148 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:42:35,148 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 23:42:35,149 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr74EnsuresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr72RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr73RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 23:42:35,153 INFO L82 PathProgramCache]: Analyzing trace with hash -985735074, now seen corresponding path program 1 times [2018-01-24 23:42:35,155 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:42:35,197 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:42:35,198 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:42:35,198 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:42:35,198 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:42:35,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:42:35,239 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 23:42:35,302 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 23:42:35,304 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 23:42:35,304 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 23:42:35,304 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 23:42:35,307 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 23:42:35,318 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 23:42:35,319 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 23:42:35,321 INFO L87 Difference]: Start difference. First operand 173 states. Second operand 4 states. [2018-01-24 23:42:35,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 23:42:35,735 INFO L93 Difference]: Finished difference Result 348 states and 384 transitions. [2018-01-24 23:42:35,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 23:42:35,736 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-24 23:42:35,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 23:42:35,749 INFO L225 Difference]: With dead ends: 348 [2018-01-24 23:42:35,749 INFO L226 Difference]: Without dead ends: 183 [2018-01-24 23:42:35,755 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 23:42:35,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-01-24 23:42:35,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 168. [2018-01-24 23:42:35,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2018-01-24 23:42:35,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 181 transitions. [2018-01-24 23:42:35,797 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 181 transitions. Word has length 8 [2018-01-24 23:42:35,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 23:42:35,798 INFO L432 AbstractCegarLoop]: Abstraction has 168 states and 181 transitions. [2018-01-24 23:42:35,798 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 23:42:35,798 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 181 transitions. [2018-01-24 23:42:35,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-24 23:42:35,798 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:42:35,798 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 23:42:35,799 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr74EnsuresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr72RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr73RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 23:42:35,799 INFO L82 PathProgramCache]: Analyzing trace with hash -985735073, now seen corresponding path program 1 times [2018-01-24 23:42:35,799 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:42:35,800 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:42:35,800 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:42:35,800 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:42:35,800 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:42:35,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:42:35,823 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 23:42:35,893 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 23:42:35,893 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 23:42:35,894 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 23:42:35,894 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 23:42:35,896 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 23:42:35,896 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 23:42:35,896 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 23:42:35,897 INFO L87 Difference]: Start difference. First operand 168 states and 181 transitions. Second operand 4 states. [2018-01-24 23:42:36,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 23:42:36,090 INFO L93 Difference]: Finished difference Result 168 states and 181 transitions. [2018-01-24 23:42:36,090 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 23:42:36,090 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-24 23:42:36,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 23:42:36,092 INFO L225 Difference]: With dead ends: 168 [2018-01-24 23:42:36,092 INFO L226 Difference]: Without dead ends: 166 [2018-01-24 23:42:36,093 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 23:42:36,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2018-01-24 23:42:36,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2018-01-24 23:42:36,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2018-01-24 23:42:36,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 179 transitions. [2018-01-24 23:42:36,107 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 179 transitions. Word has length 8 [2018-01-24 23:42:36,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 23:42:36,107 INFO L432 AbstractCegarLoop]: Abstraction has 166 states and 179 transitions. [2018-01-24 23:42:36,108 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 23:42:36,108 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 179 transitions. [2018-01-24 23:42:36,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-01-24 23:42:36,108 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:42:36,108 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 23:42:36,109 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr74EnsuresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr72RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr73RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 23:42:36,109 INFO L82 PathProgramCache]: Analyzing trace with hash 473226571, now seen corresponding path program 1 times [2018-01-24 23:42:36,109 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:42:36,110 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:42:36,110 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:42:36,110 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:42:36,111 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:42:36,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:42:36,125 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 23:42:36,173 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 23:42:36,173 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 23:42:36,173 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 23:42:36,173 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 23:42:36,173 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 23:42:36,174 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 23:42:36,174 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 23:42:36,174 INFO L87 Difference]: Start difference. First operand 166 states and 179 transitions. Second operand 4 states. [2018-01-24 23:42:36,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 23:42:36,369 INFO L93 Difference]: Finished difference Result 200 states and 217 transitions. [2018-01-24 23:42:36,369 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 23:42:36,369 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-01-24 23:42:36,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 23:42:36,371 INFO L225 Difference]: With dead ends: 200 [2018-01-24 23:42:36,371 INFO L226 Difference]: Without dead ends: 180 [2018-01-24 23:42:36,372 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 23:42:36,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2018-01-24 23:42:36,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 153. [2018-01-24 23:42:36,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2018-01-24 23:42:36,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 169 transitions. [2018-01-24 23:42:36,386 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 169 transitions. Word has length 14 [2018-01-24 23:42:36,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 23:42:36,387 INFO L432 AbstractCegarLoop]: Abstraction has 153 states and 169 transitions. [2018-01-24 23:42:36,387 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 23:42:36,387 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 169 transitions. [2018-01-24 23:42:36,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-01-24 23:42:36,388 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:42:36,388 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 23:42:36,388 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr74EnsuresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr72RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr73RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 23:42:36,388 INFO L82 PathProgramCache]: Analyzing trace with hash 473226572, now seen corresponding path program 1 times [2018-01-24 23:42:36,388 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:42:36,389 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:42:36,390 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:42:36,390 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:42:36,390 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:42:36,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:42:36,412 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 23:42:36,488 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 23:42:36,488 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 23:42:36,488 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 23:42:36,488 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 23:42:36,488 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 23:42:36,489 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 23:42:36,489 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 23:42:36,489 INFO L87 Difference]: Start difference. First operand 153 states and 169 transitions. Second operand 5 states. [2018-01-24 23:42:36,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 23:42:36,724 INFO L93 Difference]: Finished difference Result 227 states and 250 transitions. [2018-01-24 23:42:36,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 23:42:36,724 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-01-24 23:42:36,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 23:42:36,727 INFO L225 Difference]: With dead ends: 227 [2018-01-24 23:42:36,728 INFO L226 Difference]: Without dead ends: 211 [2018-01-24 23:42:36,728 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 23:42:36,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-01-24 23:42:36,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 188. [2018-01-24 23:42:36,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2018-01-24 23:42:36,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 215 transitions. [2018-01-24 23:42:36,745 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 215 transitions. Word has length 14 [2018-01-24 23:42:36,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 23:42:36,746 INFO L432 AbstractCegarLoop]: Abstraction has 188 states and 215 transitions. [2018-01-24 23:42:36,746 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 23:42:36,746 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 215 transitions. [2018-01-24 23:42:36,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-24 23:42:36,747 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:42:36,747 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 23:42:36,747 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr74EnsuresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr72RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr73RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 23:42:36,748 INFO L82 PathProgramCache]: Analyzing trace with hash 1727604301, now seen corresponding path program 1 times [2018-01-24 23:42:36,748 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:42:36,749 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:42:36,749 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:42:36,749 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:42:36,749 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:42:36,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:42:36,763 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 23:42:36,819 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 23:42:36,819 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 23:42:36,819 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-01-24 23:42:36,819 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 23:42:36,820 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-24 23:42:36,820 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-24 23:42:36,820 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-01-24 23:42:36,820 INFO L87 Difference]: Start difference. First operand 188 states and 215 transitions. Second operand 7 states. [2018-01-24 23:42:37,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 23:42:37,034 INFO L93 Difference]: Finished difference Result 310 states and 342 transitions. [2018-01-24 23:42:37,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-24 23:42:37,035 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2018-01-24 23:42:37,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 23:42:37,037 INFO L225 Difference]: With dead ends: 310 [2018-01-24 23:42:37,037 INFO L226 Difference]: Without dead ends: 249 [2018-01-24 23:42:37,038 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2018-01-24 23:42:37,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2018-01-24 23:42:37,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 189. [2018-01-24 23:42:37,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-01-24 23:42:37,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 216 transitions. [2018-01-24 23:42:37,048 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 216 transitions. Word has length 18 [2018-01-24 23:42:37,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 23:42:37,048 INFO L432 AbstractCegarLoop]: Abstraction has 189 states and 216 transitions. [2018-01-24 23:42:37,048 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-24 23:42:37,048 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 216 transitions. [2018-01-24 23:42:37,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-01-24 23:42:37,049 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:42:37,049 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] [2018-01-24 23:42:37,049 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr74EnsuresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr72RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr73RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 23:42:37,049 INFO L82 PathProgramCache]: Analyzing trace with hash 471570443, now seen corresponding path program 1 times [2018-01-24 23:42:37,049 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:42:37,050 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:42:37,050 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:42:37,050 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:42:37,050 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:42:37,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:42:37,062 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 23:42:37,092 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 23:42:37,092 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 23:42:37,092 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-24 23:42:37,092 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 23:42:37,093 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 23:42:37,093 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 23:42:37,093 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 23:42:37,093 INFO L87 Difference]: Start difference. First operand 189 states and 216 transitions. Second operand 5 states. [2018-01-24 23:42:37,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 23:42:37,239 INFO L93 Difference]: Finished difference Result 266 states and 295 transitions. [2018-01-24 23:42:37,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 23:42:37,240 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2018-01-24 23:42:37,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 23:42:37,241 INFO L225 Difference]: With dead ends: 266 [2018-01-24 23:42:37,241 INFO L226 Difference]: Without dead ends: 207 [2018-01-24 23:42:37,242 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 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 23:42:37,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2018-01-24 23:42:37,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 188. [2018-01-24 23:42:37,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2018-01-24 23:42:37,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 214 transitions. [2018-01-24 23:42:37,248 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 214 transitions. Word has length 21 [2018-01-24 23:42:37,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 23:42:37,248 INFO L432 AbstractCegarLoop]: Abstraction has 188 states and 214 transitions. [2018-01-24 23:42:37,248 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 23:42:37,248 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 214 transitions. [2018-01-24 23:42:37,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-24 23:42:37,249 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:42:37,249 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] [2018-01-24 23:42:37,249 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr74EnsuresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr72RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr73RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 23:42:37,249 INFO L82 PathProgramCache]: Analyzing trace with hash 1608607228, now seen corresponding path program 1 times [2018-01-24 23:42:37,250 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:42:37,250 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:42:37,251 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:42:37,251 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:42:37,251 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:42:37,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:42:37,262 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 23:42:37,305 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 23:42:37,305 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 23:42:37,306 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 23:42:37,306 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 23:42:37,306 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-24 23:42:37,306 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-24 23:42:37,306 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-24 23:42:37,307 INFO L87 Difference]: Start difference. First operand 188 states and 214 transitions. Second operand 3 states. [2018-01-24 23:42:37,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 23:42:37,335 INFO L93 Difference]: Finished difference Result 369 states and 423 transitions. [2018-01-24 23:42:37,336 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-24 23:42:37,336 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2018-01-24 23:42:37,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 23:42:37,338 INFO L225 Difference]: With dead ends: 369 [2018-01-24 23:42:37,338 INFO L226 Difference]: Without dead ends: 190 [2018-01-24 23:42:37,339 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 [2018-01-24 23:42:37,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2018-01-24 23:42:37,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2018-01-24 23:42:37,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2018-01-24 23:42:37,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 216 transitions. [2018-01-24 23:42:37,347 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 216 transitions. Word has length 22 [2018-01-24 23:42:37,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 23:42:37,347 INFO L432 AbstractCegarLoop]: Abstraction has 190 states and 216 transitions. [2018-01-24 23:42:37,347 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-24 23:42:37,348 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 216 transitions. [2018-01-24 23:42:37,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-01-24 23:42:37,348 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:42:37,348 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] [2018-01-24 23:42:37,349 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr74EnsuresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr72RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr73RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 23:42:37,349 INFO L82 PathProgramCache]: Analyzing trace with hash -1343010439, now seen corresponding path program 1 times [2018-01-24 23:42:37,349 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:42:37,350 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:42:37,350 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:42:37,350 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:42:37,350 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:42:37,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:42:37,367 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 23:42:37,486 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 23:42:37,486 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 23:42:37,486 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-24 23:42:37,486 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 23:42:37,487 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-24 23:42:37,487 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-24 23:42:37,487 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-24 23:42:37,488 INFO L87 Difference]: Start difference. First operand 190 states and 216 transitions. Second operand 6 states. [2018-01-24 23:42:37,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 23:42:37,769 INFO L93 Difference]: Finished difference Result 419 states and 479 transitions. [2018-01-24 23:42:37,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-24 23:42:37,770 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2018-01-24 23:42:37,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 23:42:37,771 INFO L225 Difference]: With dead ends: 419 [2018-01-24 23:42:37,771 INFO L226 Difference]: Without dead ends: 238 [2018-01-24 23:42:37,772 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-01-24 23:42:37,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2018-01-24 23:42:37,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 206. [2018-01-24 23:42:37,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2018-01-24 23:42:37,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 237 transitions. [2018-01-24 23:42:37,780 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 237 transitions. Word has length 24 [2018-01-24 23:42:37,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 23:42:37,780 INFO L432 AbstractCegarLoop]: Abstraction has 206 states and 237 transitions. [2018-01-24 23:42:37,780 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-24 23:42:37,780 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 237 transitions. [2018-01-24 23:42:37,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-24 23:42:37,781 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:42:37,781 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] [2018-01-24 23:42:37,781 INFO L371 AbstractCegarLoop]: === Iteration 9 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr74EnsuresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr72RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr73RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 23:42:37,782 INFO L82 PathProgramCache]: Analyzing trace with hash 1202174280, now seen corresponding path program 1 times [2018-01-24 23:42:37,782 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:42:37,782 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:42:37,782 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:42:37,783 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:42:37,783 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:42:37,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:42:37,795 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 23:42:37,847 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 23:42:37,847 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 23:42:37,848 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 23:42:37,848 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 23:42:37,848 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 23:42:37,848 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 23:42:37,848 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 23:42:37,848 INFO L87 Difference]: Start difference. First operand 206 states and 237 transitions. Second operand 5 states. [2018-01-24 23:42:38,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 23:42:38,177 INFO L93 Difference]: Finished difference Result 332 states and 384 transitions. [2018-01-24 23:42:38,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 23:42:38,178 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2018-01-24 23:42:38,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 23:42:38,180 INFO L225 Difference]: With dead ends: 332 [2018-01-24 23:42:38,180 INFO L226 Difference]: Without dead ends: 331 [2018-01-24 23:42:38,181 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 23:42:38,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2018-01-24 23:42:38,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 205. [2018-01-24 23:42:38,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-01-24 23:42:38,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 235 transitions. [2018-01-24 23:42:38,190 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 235 transitions. Word has length 25 [2018-01-24 23:42:38,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 23:42:38,191 INFO L432 AbstractCegarLoop]: Abstraction has 205 states and 235 transitions. [2018-01-24 23:42:38,191 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 23:42:38,191 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 235 transitions. [2018-01-24 23:42:38,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-24 23:42:38,192 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:42:38,192 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] [2018-01-24 23:42:38,192 INFO L371 AbstractCegarLoop]: === Iteration 10 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr74EnsuresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr72RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr73RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 23:42:38,192 INFO L82 PathProgramCache]: Analyzing trace with hash 1202174281, now seen corresponding path program 1 times [2018-01-24 23:42:38,193 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:42:38,194 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:42:38,194 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:42:38,194 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:42:38,194 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:42:38,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:42:38,207 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 23:42:38,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 23:42:38,318 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 23:42:38,318 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 23:42:38,318 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 23:42:38,318 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 23:42:38,318 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 23:42:38,318 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 23:42:38,319 INFO L87 Difference]: Start difference. First operand 205 states and 235 transitions. Second operand 5 states. [2018-01-24 23:42:38,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 23:42:38,661 INFO L93 Difference]: Finished difference Result 365 states and 417 transitions. [2018-01-24 23:42:38,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 23:42:38,662 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2018-01-24 23:42:38,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 23:42:38,663 INFO L225 Difference]: With dead ends: 365 [2018-01-24 23:42:38,663 INFO L226 Difference]: Without dead ends: 364 [2018-01-24 23:42:38,663 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-24 23:42:38,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2018-01-24 23:42:38,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 204. [2018-01-24 23:42:38,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2018-01-24 23:42:38,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 233 transitions. [2018-01-24 23:42:38,675 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 233 transitions. Word has length 25 [2018-01-24 23:42:38,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 23:42:38,676 INFO L432 AbstractCegarLoop]: Abstraction has 204 states and 233 transitions. [2018-01-24 23:42:38,676 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 23:42:38,676 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 233 transitions. [2018-01-24 23:42:38,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-01-24 23:42:38,677 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:42:38,677 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] [2018-01-24 23:42:38,678 INFO L371 AbstractCegarLoop]: === Iteration 11 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr74EnsuresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr72RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr73RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 23:42:38,678 INFO L82 PathProgramCache]: Analyzing trace with hash -2086605704, now seen corresponding path program 1 times [2018-01-24 23:42:38,678 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:42:38,679 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:42:38,679 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:42:38,679 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:42:38,679 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:42:38,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:42:38,691 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 23:42:38,735 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 23:42:38,735 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 23:42:38,735 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 23:42:38,735 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 23:42:38,736 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 23:42:38,736 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 23:42:38,736 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 23:42:38,736 INFO L87 Difference]: Start difference. First operand 204 states and 233 transitions. Second operand 4 states. [2018-01-24 23:42:38,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 23:42:38,901 INFO L93 Difference]: Finished difference Result 251 states and 284 transitions. [2018-01-24 23:42:38,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 23:42:38,902 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-01-24 23:42:38,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 23:42:38,903 INFO L225 Difference]: With dead ends: 251 [2018-01-24 23:42:38,903 INFO L226 Difference]: Without dead ends: 250 [2018-01-24 23:42:38,903 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-24 23:42:38,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2018-01-24 23:42:38,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 207. [2018-01-24 23:42:38,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2018-01-24 23:42:38,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 238 transitions. [2018-01-24 23:42:38,911 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 238 transitions. Word has length 27 [2018-01-24 23:42:38,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 23:42:38,911 INFO L432 AbstractCegarLoop]: Abstraction has 207 states and 238 transitions. [2018-01-24 23:42:38,911 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 23:42:38,911 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 238 transitions. [2018-01-24 23:42:38,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-01-24 23:42:38,912 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:42:38,912 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] [2018-01-24 23:42:38,912 INFO L371 AbstractCegarLoop]: === Iteration 12 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr74EnsuresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr72RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr73RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 23:42:38,912 INFO L82 PathProgramCache]: Analyzing trace with hash -2086605703, now seen corresponding path program 1 times [2018-01-24 23:42:38,912 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:42:38,913 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:42:38,913 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:42:38,914 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:42:38,914 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:42:38,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:42:38,925 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 23:42:39,117 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-01-24 23:42:39,117 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 23:42:39,117 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-01-24 23:42:39,117 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 23:42:39,118 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-24 23:42:39,118 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-24 23:42:39,118 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-01-24 23:42:39,118 INFO L87 Difference]: Start difference. First operand 207 states and 238 transitions. Second operand 8 states. [2018-01-24 23:42:39,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 23:42:39,485 INFO L93 Difference]: Finished difference Result 321 states and 357 transitions. [2018-01-24 23:42:39,518 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-24 23:42:39,518 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2018-01-24 23:42:39,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 23:42:39,519 INFO L225 Difference]: With dead ends: 321 [2018-01-24 23:42:39,519 INFO L226 Difference]: Without dead ends: 317 [2018-01-24 23:42:39,520 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2018-01-24 23:42:39,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2018-01-24 23:42:39,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 211. [2018-01-24 23:42:39,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-01-24 23:42:39,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 244 transitions. [2018-01-24 23:42:39,534 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 244 transitions. Word has length 27 [2018-01-24 23:42:39,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 23:42:39,534 INFO L432 AbstractCegarLoop]: Abstraction has 211 states and 244 transitions. [2018-01-24 23:42:39,534 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-24 23:42:39,534 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 244 transitions. [2018-01-24 23:42:39,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-01-24 23:42:39,535 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:42:39,535 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] [2018-01-24 23:42:39,535 INFO L371 AbstractCegarLoop]: === Iteration 13 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr74EnsuresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr72RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr73RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 23:42:39,536 INFO L82 PathProgramCache]: Analyzing trace with hash -2086546122, now seen corresponding path program 1 times [2018-01-24 23:42:39,536 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:42:39,537 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:42:39,537 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:42:39,537 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:42:39,537 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:42:39,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:42:39,548 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 23:42:39,841 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 23:42:39,841 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 23:42:39,841 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-01-24 23:42:39,841 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 23:42:39,842 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-24 23:42:39,842 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-24 23:42:39,842 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-01-24 23:42:39,842 INFO L87 Difference]: Start difference. First operand 211 states and 244 transitions. Second operand 7 states. [2018-01-24 23:42:40,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 23:42:40,281 INFO L93 Difference]: Finished difference Result 423 states and 470 transitions. [2018-01-24 23:42:40,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-24 23:42:40,281 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2018-01-24 23:42:40,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 23:42:40,283 INFO L225 Difference]: With dead ends: 423 [2018-01-24 23:42:40,283 INFO L226 Difference]: Without dead ends: 343 [2018-01-24 23:42:40,283 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2018-01-24 23:42:40,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2018-01-24 23:42:40,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 223. [2018-01-24 23:42:40,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2018-01-24 23:42:40,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 256 transitions. [2018-01-24 23:42:40,295 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 256 transitions. Word has length 27 [2018-01-24 23:42:40,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 23:42:40,295 INFO L432 AbstractCegarLoop]: Abstraction has 223 states and 256 transitions. [2018-01-24 23:42:40,295 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-24 23:42:40,295 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 256 transitions. [2018-01-24 23:42:40,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-01-24 23:42:40,296 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:42:40,296 INFO L322 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 23:42:40,296 INFO L371 AbstractCegarLoop]: === Iteration 14 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr74EnsuresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr72RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr73RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 23:42:40,297 INFO L82 PathProgramCache]: Analyzing trace with hash -260268355, now seen corresponding path program 1 times [2018-01-24 23:42:40,297 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:42:40,298 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:42:40,298 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:42:40,298 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:42:40,298 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:42:40,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:42:40,309 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 23:42:40,376 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 23:42:40,377 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 23:42:40,377 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-24 23:42:40,378 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 29 with the following transitions: [2018-01-24 23:42:40,382 INFO L201 CegarAbsIntRunner]: [0], [1], [5], [6], [7], [10], [16], [18], [21], [136], [137], [141], [145], [147], [148], [151], [152], [155], [158], [159], [162], [165], [174], [176], [264], [265], [266] [2018-01-24 23:42:40,458 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-24 23:42:40,458 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