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_imprecise.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 17:03:44,404 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 17:03:44,405 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 17:03:44,422 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 17:03:44,422 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 17:03:44,423 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 17:03:44,424 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 17:03:44,426 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 17:03:44,428 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 17:03:44,428 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 17:03:44,429 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 17:03:44,430 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 17:03:44,430 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 17:03:44,432 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 17:03:44,433 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 17:03:44,435 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 17:03:44,437 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 17:03:44,439 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 17:03:44,440 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 17:03:44,442 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 17:03:44,444 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-24 17:03:44,444 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-24 17:03:44,445 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-24 17:03:44,446 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-24 17:03:44,447 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-24 17:03:44,448 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-24 17:03:44,449 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-24 17:03:44,449 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-24 17:03:44,450 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-24 17:03:44,450 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 17:03:44,451 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 17:03:44,451 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_imprecise.epf [2018-01-24 17:03:44,459 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 17:03:44,459 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 17:03:44,460 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 17:03:44,460 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 17:03:44,460 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 17:03:44,460 INFO L133 SettingsManager]: * Deactivate Weak Equivalences=true [2018-01-24 17:03:44,461 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 17:03:44,461 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 17:03:44,461 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 17:03:44,461 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 17:03:44,461 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 17:03:44,462 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 17:03:44,462 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 17:03:44,462 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 17:03:44,462 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 17:03:44,462 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 17:03:44,462 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 17:03:44,462 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 17:03:44,462 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 17:03:44,463 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 17:03:44,463 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 17:03:44,463 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 17:03:44,463 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 17:03:44,463 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 17:03:44,464 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 17:03:44,464 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 17:03:44,464 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 17:03:44,464 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 17:03:44,464 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 17:03:44,464 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-24 17:03:44,464 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 17:03:44,465 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 17:03:44,465 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 17:03:44,465 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-24 17:03:44,465 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 17:03:44,466 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 17:03:44,499 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 17:03:44,509 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 17:03:44,512 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 17:03:44,514 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 17:03:44,514 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 17:03:44,514 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/memsafety-ext/tree_dsw_true-valid-memsafety_false-termination.i [2018-01-24 17:03:44,682 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 17:03:44,688 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 17:03:44,688 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 17:03:44,689 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 17:03:44,694 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 17:03:44,696 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 05:03:44" (1/1) ... [2018-01-24 17:03:44,698 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 05:03:44, skipping insertion in model container [2018-01-24 17:03:44,699 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 05:03:44" (1/1) ... [2018-01-24 17:03:44,712 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 17:03:44,752 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 17:03:44,873 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 17:03:44,896 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 17:03:44,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:03:44 WrapperNode [2018-01-24 17:03:44,905 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 17:03:44,906 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 17:03:44,906 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 17:03:44,906 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 17:03:44,921 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:03:44" (1/1) ... [2018-01-24 17:03:44,922 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:03:44" (1/1) ... [2018-01-24 17:03:44,935 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:03:44" (1/1) ... [2018-01-24 17:03:44,935 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:03:44" (1/1) ... [2018-01-24 17:03:44,942 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:03:44" (1/1) ... [2018-01-24 17:03:44,946 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:03:44" (1/1) ... [2018-01-24 17:03:44,948 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:03:44" (1/1) ... [2018-01-24 17:03:44,950 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 17:03:44,950 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 17:03:44,950 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 17:03:44,950 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 17:03:44,951 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:03:44" (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 17:03:45,004 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 17:03:45,005 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 17:03:45,005 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 17:03:45,005 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-24 17:03:45,005 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-24 17:03:45,005 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 17:03:45,005 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 17:03:45,006 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 17:03:45,006 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 17:03:45,006 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-24 17:03:45,006 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-24 17:03:45,006 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 17:03:45,006 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 17:03:45,007 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 17:03:45,640 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 17:03:45,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 05:03:45 BoogieIcfgContainer [2018-01-24 17:03:45,641 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 17:03:45,642 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-24 17:03:45,642 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-24 17:03:45,645 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-24 17:03:45,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.01 05:03:44" (1/3) ... [2018-01-24 17:03:45,647 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 05:03:45, skipping insertion in model container [2018-01-24 17:03:45,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:03:44" (2/3) ... [2018-01-24 17:03:45,647 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 05:03:45, skipping insertion in model container [2018-01-24 17:03:45,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 05:03:45" (3/3) ... [2018-01-24 17:03:45,650 INFO L105 eAbstractionObserver]: Analyzing ICFG tree_dsw_true-valid-memsafety_false-termination.i [2018-01-24 17:03:45,660 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-24 17:03:45,669 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 75 error locations. [2018-01-24 17:03:45,720 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-24 17:03:45,720 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-24 17:03:45,720 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-24 17:03:45,720 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-24 17:03:45,720 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-24 17:03:45,720 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-24 17:03:45,720 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-24 17:03:45,721 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-24 17:03:45,722 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-24 17:03:45,748 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states. [2018-01-24 17:03:45,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-24 17:03:45,756 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 17:03:45,757 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 17:03:45,757 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 17:03:45,763 INFO L82 PathProgramCache]: Analyzing trace with hash -985735074, now seen corresponding path program 1 times [2018-01-24 17:03:45,766 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 17:03:45,824 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:03:45,824 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:03:45,824 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:03:45,824 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 17:03:45,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 17:03:45,873 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 17:03:45,934 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 17:03:45,937 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 17:03:45,937 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 17:03:45,938 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 17:03:45,941 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 17:03:45,958 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 17:03:45,959 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 17:03:45,962 INFO L87 Difference]: Start difference. First operand 173 states. Second operand 4 states. [2018-01-24 17:03:46,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 17:03:46,440 INFO L93 Difference]: Finished difference Result 348 states and 384 transitions. [2018-01-24 17:03:46,441 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 17:03:46,442 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-24 17:03:46,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 17:03:46,455 INFO L225 Difference]: With dead ends: 348 [2018-01-24 17:03:46,455 INFO L226 Difference]: Without dead ends: 183 [2018-01-24 17:03:46,459 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 17:03:46,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-01-24 17:03:46,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 168. [2018-01-24 17:03:46,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2018-01-24 17:03:46,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 181 transitions. [2018-01-24 17:03:46,505 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 181 transitions. Word has length 8 [2018-01-24 17:03:46,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 17:03:46,506 INFO L432 AbstractCegarLoop]: Abstraction has 168 states and 181 transitions. [2018-01-24 17:03:46,506 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 17:03:46,506 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 181 transitions. [2018-01-24 17:03:46,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-24 17:03:46,507 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 17:03:46,507 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 17:03:46,507 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 17:03:46,508 INFO L82 PathProgramCache]: Analyzing trace with hash -985735073, now seen corresponding path program 1 times [2018-01-24 17:03:46,508 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 17:03:46,509 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:03:46,509 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:03:46,509 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:03:46,509 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 17:03:46,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 17:03:46,528 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 17:03:46,621 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 17:03:46,621 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 17:03:46,621 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 17:03:46,621 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 17:03:46,623 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 17:03:46,624 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 17:03:46,624 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 17:03:46,624 INFO L87 Difference]: Start difference. First operand 168 states and 181 transitions. Second operand 4 states. [2018-01-24 17:03:46,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 17:03:46,852 INFO L93 Difference]: Finished difference Result 168 states and 181 transitions. [2018-01-24 17:03:46,852 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 17:03:46,852 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-24 17:03:46,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 17:03:46,854 INFO L225 Difference]: With dead ends: 168 [2018-01-24 17:03:46,855 INFO L226 Difference]: Without dead ends: 166 [2018-01-24 17:03:46,856 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 17:03:46,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2018-01-24 17:03:46,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2018-01-24 17:03:46,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2018-01-24 17:03:46,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 179 transitions. [2018-01-24 17:03:46,868 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 179 transitions. Word has length 8 [2018-01-24 17:03:46,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 17:03:46,868 INFO L432 AbstractCegarLoop]: Abstraction has 166 states and 179 transitions. [2018-01-24 17:03:46,868 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 17:03:46,869 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 179 transitions. [2018-01-24 17:03:46,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-01-24 17:03:46,869 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 17:03:46,869 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 17:03:46,869 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 17:03:46,869 INFO L82 PathProgramCache]: Analyzing trace with hash 473226571, now seen corresponding path program 1 times [2018-01-24 17:03:46,869 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 17:03:46,870 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:03:46,871 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:03:46,871 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:03:46,871 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 17:03:46,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 17:03:46,887 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 17:03:46,925 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 17:03:46,926 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 17:03:46,926 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 17:03:46,926 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 17:03:46,926 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 17:03:46,926 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 17:03:46,926 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 17:03:46,927 INFO L87 Difference]: Start difference. First operand 166 states and 179 transitions. Second operand 4 states. [2018-01-24 17:03:47,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 17:03:47,113 INFO L93 Difference]: Finished difference Result 200 states and 217 transitions. [2018-01-24 17:03:47,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 17:03:47,113 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-01-24 17:03:47,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 17:03:47,115 INFO L225 Difference]: With dead ends: 200 [2018-01-24 17:03:47,115 INFO L226 Difference]: Without dead ends: 180 [2018-01-24 17:03:47,115 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 17:03:47,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2018-01-24 17:03:47,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 153. [2018-01-24 17:03:47,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2018-01-24 17:03:47,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 169 transitions. [2018-01-24 17:03:47,127 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 169 transitions. Word has length 14 [2018-01-24 17:03:47,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 17:03:47,127 INFO L432 AbstractCegarLoop]: Abstraction has 153 states and 169 transitions. [2018-01-24 17:03:47,127 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 17:03:47,128 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 169 transitions. [2018-01-24 17:03:47,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-01-24 17:03:47,128 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 17:03:47,129 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 17:03:47,129 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 17:03:47,129 INFO L82 PathProgramCache]: Analyzing trace with hash 473226572, now seen corresponding path program 1 times [2018-01-24 17:03:47,130 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 17:03:47,130 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:03:47,131 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:03:47,131 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:03:47,131 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 17:03:47,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 17:03:47,147 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 17:03:47,223 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 17:03:47,224 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 17:03:47,249 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 17:03:47,249 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 17:03:47,249 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 17:03:47,249 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 17:03:47,249 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 17:03:47,250 INFO L87 Difference]: Start difference. First operand 153 states and 169 transitions. Second operand 5 states. [2018-01-24 17:03:47,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 17:03:47,478 INFO L93 Difference]: Finished difference Result 227 states and 250 transitions. [2018-01-24 17:03:47,478 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 17:03:47,479 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-01-24 17:03:47,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 17:03:47,484 INFO L225 Difference]: With dead ends: 227 [2018-01-24 17:03:47,484 INFO L226 Difference]: Without dead ends: 211 [2018-01-24 17:03:47,485 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 17:03:47,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-01-24 17:03:47,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 188. [2018-01-24 17:03:47,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2018-01-24 17:03:47,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 215 transitions. [2018-01-24 17:03:47,499 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 215 transitions. Word has length 14 [2018-01-24 17:03:47,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 17:03:47,499 INFO L432 AbstractCegarLoop]: Abstraction has 188 states and 215 transitions. [2018-01-24 17:03:47,499 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 17:03:47,499 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 215 transitions. [2018-01-24 17:03:47,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-24 17:03:47,500 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 17:03:47,500 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 17:03:47,500 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 17:03:47,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1727604301, now seen corresponding path program 1 times [2018-01-24 17:03:47,501 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 17:03:47,502 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:03:47,502 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:03:47,502 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:03:47,502 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 17:03:47,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 17:03:47,518 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 17:03:47,581 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 17:03:47,581 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 17:03:47,581 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-01-24 17:03:47,581 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 17:03:47,581 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-24 17:03:47,581 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-24 17:03:47,582 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-01-24 17:03:47,582 INFO L87 Difference]: Start difference. First operand 188 states and 215 transitions. Second operand 7 states. [2018-01-24 17:03:47,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 17:03:47,782 INFO L93 Difference]: Finished difference Result 310 states and 342 transitions. [2018-01-24 17:03:47,782 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-24 17:03:47,783 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2018-01-24 17:03:47,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 17:03:47,784 INFO L225 Difference]: With dead ends: 310 [2018-01-24 17:03:47,784 INFO L226 Difference]: Without dead ends: 249 [2018-01-24 17:03:47,785 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2018-01-24 17:03:47,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2018-01-24 17:03:47,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 189. [2018-01-24 17:03:47,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-01-24 17:03:47,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 216 transitions. [2018-01-24 17:03:47,796 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 216 transitions. Word has length 18 [2018-01-24 17:03:47,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 17:03:47,796 INFO L432 AbstractCegarLoop]: Abstraction has 189 states and 216 transitions. [2018-01-24 17:03:47,796 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-24 17:03:47,796 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 216 transitions. [2018-01-24 17:03:47,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-01-24 17:03:47,797 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 17:03:47,798 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 17:03:47,798 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 17:03:47,798 INFO L82 PathProgramCache]: Analyzing trace with hash 471570443, now seen corresponding path program 1 times [2018-01-24 17:03:47,798 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 17:03:47,799 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:03:47,799 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:03:47,799 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:03:47,799 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 17:03:47,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 17:03:47,813 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 17:03:47,843 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 17:03:47,843 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 17:03:47,843 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-24 17:03:47,843 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 17:03:47,843 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 17:03:47,843 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 17:03:47,844 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 17:03:47,844 INFO L87 Difference]: Start difference. First operand 189 states and 216 transitions. Second operand 5 states. [2018-01-24 17:03:47,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 17:03:47,996 INFO L93 Difference]: Finished difference Result 266 states and 295 transitions. [2018-01-24 17:03:47,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 17:03:47,997 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2018-01-24 17:03:47,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 17:03:47,998 INFO L225 Difference]: With dead ends: 266 [2018-01-24 17:03:47,998 INFO L226 Difference]: Without dead ends: 207 [2018-01-24 17:03:47,999 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 17:03:47,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2018-01-24 17:03:48,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 188. [2018-01-24 17:03:48,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2018-01-24 17:03:48,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 214 transitions. [2018-01-24 17:03:48,009 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 214 transitions. Word has length 21 [2018-01-24 17:03:48,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 17:03:48,009 INFO L432 AbstractCegarLoop]: Abstraction has 188 states and 214 transitions. [2018-01-24 17:03:48,009 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 17:03:48,009 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 214 transitions. [2018-01-24 17:03:48,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-24 17:03:48,010 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 17:03:48,010 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 17:03:48,010 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 17:03:48,010 INFO L82 PathProgramCache]: Analyzing trace with hash 1608607228, now seen corresponding path program 1 times [2018-01-24 17:03:48,010 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 17:03:48,011 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:03:48,011 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:03:48,011 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:03:48,011 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 17:03:48,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 17:03:48,020 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 17:03:48,040 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 17:03:48,040 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 17:03:48,040 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 17:03:48,041 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 17:03:48,041 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-24 17:03:48,041 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-24 17:03:48,042 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-24 17:03:48,042 INFO L87 Difference]: Start difference. First operand 188 states and 214 transitions. Second operand 3 states. [2018-01-24 17:03:48,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 17:03:48,057 INFO L93 Difference]: Finished difference Result 369 states and 423 transitions. [2018-01-24 17:03:48,058 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-24 17:03:48,058 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2018-01-24 17:03:48,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 17:03:48,060 INFO L225 Difference]: With dead ends: 369 [2018-01-24 17:03:48,060 INFO L226 Difference]: Without dead ends: 190 [2018-01-24 17:03:48,061 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 17:03:48,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2018-01-24 17:03:48,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2018-01-24 17:03:48,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2018-01-24 17:03:48,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 216 transitions. [2018-01-24 17:03:48,070 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 216 transitions. Word has length 22 [2018-01-24 17:03:48,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 17:03:48,070 INFO L432 AbstractCegarLoop]: Abstraction has 190 states and 216 transitions. [2018-01-24 17:03:48,070 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-24 17:03:48,070 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 216 transitions. [2018-01-24 17:03:48,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-01-24 17:03:48,071 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 17:03:48,071 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 17:03:48,072 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 17:03:48,072 INFO L82 PathProgramCache]: Analyzing trace with hash -1343010439, now seen corresponding path program 1 times [2018-01-24 17:03:48,072 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 17:03:48,073 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:03:48,073 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:03:48,073 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:03:48,073 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 17:03:48,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 17:03:48,092 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 17:03:48,241 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 17:03:48,241 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 17:03:48,241 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-24 17:03:48,241 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 17:03:48,242 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-24 17:03:48,242 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-24 17:03:48,242 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-24 17:03:48,242 INFO L87 Difference]: Start difference. First operand 190 states and 216 transitions. Second operand 6 states. [2018-01-24 17:03:48,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 17:03:48,527 INFO L93 Difference]: Finished difference Result 419 states and 479 transitions. [2018-01-24 17:03:48,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-24 17:03:48,527 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2018-01-24 17:03:48,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 17:03:48,528 INFO L225 Difference]: With dead ends: 419 [2018-01-24 17:03:48,528 INFO L226 Difference]: Without dead ends: 238 [2018-01-24 17:03:48,529 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 17:03:48,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2018-01-24 17:03:48,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 206. [2018-01-24 17:03:48,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2018-01-24 17:03:48,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 237 transitions. [2018-01-24 17:03:48,540 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 237 transitions. Word has length 24 [2018-01-24 17:03:48,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 17:03:48,541 INFO L432 AbstractCegarLoop]: Abstraction has 206 states and 237 transitions. [2018-01-24 17:03:48,541 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-24 17:03:48,541 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 237 transitions. [2018-01-24 17:03:48,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-24 17:03:48,541 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 17:03:48,542 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 17:03:48,542 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 17:03:48,542 INFO L82 PathProgramCache]: Analyzing trace with hash 1202174280, now seen corresponding path program 1 times [2018-01-24 17:03:48,542 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 17:03:48,543 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:03:48,543 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:03:48,543 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:03:48,543 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 17:03:48,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 17:03:48,557 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 17:03:48,611 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 17:03:48,611 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 17:03:48,611 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 17:03:48,611 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 17:03:48,612 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 17:03:48,612 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 17:03:48,612 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 17:03:48,612 INFO L87 Difference]: Start difference. First operand 206 states and 237 transitions. Second operand 5 states. [2018-01-24 17:03:48,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 17:03:48,899 INFO L93 Difference]: Finished difference Result 332 states and 384 transitions. [2018-01-24 17:03:48,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 17:03:48,900 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2018-01-24 17:03:48,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 17:03:48,902 INFO L225 Difference]: With dead ends: 332 [2018-01-24 17:03:48,902 INFO L226 Difference]: Without dead ends: 331 [2018-01-24 17:03:48,903 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 17:03:48,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2018-01-24 17:03:48,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 205. [2018-01-24 17:03:48,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-01-24 17:03:48,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 235 transitions. [2018-01-24 17:03:48,914 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 235 transitions. Word has length 25 [2018-01-24 17:03:48,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 17:03:48,915 INFO L432 AbstractCegarLoop]: Abstraction has 205 states and 235 transitions. [2018-01-24 17:03:48,915 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 17:03:48,915 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 235 transitions. [2018-01-24 17:03:48,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-24 17:03:48,916 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 17:03:48,916 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 17:03:48,916 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 17:03:48,916 INFO L82 PathProgramCache]: Analyzing trace with hash 1202174281, now seen corresponding path program 1 times [2018-01-24 17:03:48,916 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 17:03:48,917 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:03:48,917 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:03:48,918 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:03:48,918 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 17:03:48,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 17:03:48,931 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 17:03:48,999 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 17:03:49,000 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 17:03:49,000 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 17:03:49,000 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 17:03:49,000 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 17:03:49,001 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 17:03:49,001 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 17:03:49,001 INFO L87 Difference]: Start difference. First operand 205 states and 235 transitions. Second operand 5 states. [2018-01-24 17:03:49,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 17:03:49,326 INFO L93 Difference]: Finished difference Result 365 states and 417 transitions. [2018-01-24 17:03:49,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 17:03:49,327 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2018-01-24 17:03:49,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 17:03:49,329 INFO L225 Difference]: With dead ends: 365 [2018-01-24 17:03:49,329 INFO L226 Difference]: Without dead ends: 364 [2018-01-24 17:03:49,330 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 17:03:49,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2018-01-24 17:03:49,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 204. [2018-01-24 17:03:49,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2018-01-24 17:03:49,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 233 transitions. [2018-01-24 17:03:49,342 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 233 transitions. Word has length 25 [2018-01-24 17:03:49,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 17:03:49,343 INFO L432 AbstractCegarLoop]: Abstraction has 204 states and 233 transitions. [2018-01-24 17:03:49,343 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 17:03:49,343 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 233 transitions. [2018-01-24 17:03:49,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-01-24 17:03:49,344 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 17:03:49,344 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 17:03:49,344 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 17:03:49,345 INFO L82 PathProgramCache]: Analyzing trace with hash -2086605704, now seen corresponding path program 1 times [2018-01-24 17:03:49,345 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 17:03:49,346 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:03:49,346 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:03:49,346 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:03:49,346 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 17:03:49,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 17:03:49,358 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 17:03:49,414 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 17:03:49,414 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 17:03:49,414 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 17:03:49,415 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 17:03:49,415 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 17:03:49,415 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 17:03:49,415 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 17:03:49,415 INFO L87 Difference]: Start difference. First operand 204 states and 233 transitions. Second operand 4 states. [2018-01-24 17:03:49,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 17:03:49,638 INFO L93 Difference]: Finished difference Result 251 states and 284 transitions. [2018-01-24 17:03:49,639 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 17:03:49,639 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-01-24 17:03:49,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 17:03:49,640 INFO L225 Difference]: With dead ends: 251 [2018-01-24 17:03:49,640 INFO L226 Difference]: Without dead ends: 250 [2018-01-24 17:03:49,640 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 17:03:49,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2018-01-24 17:03:49,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 207. [2018-01-24 17:03:49,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2018-01-24 17:03:49,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 238 transitions. [2018-01-24 17:03:49,652 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 238 transitions. Word has length 27 [2018-01-24 17:03:49,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 17:03:49,652 INFO L432 AbstractCegarLoop]: Abstraction has 207 states and 238 transitions. [2018-01-24 17:03:49,652 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 17:03:49,652 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 238 transitions. [2018-01-24 17:03:49,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-01-24 17:03:49,653 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 17:03:49,654 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 17:03:49,654 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 17:03:49,654 INFO L82 PathProgramCache]: Analyzing trace with hash -2086605703, now seen corresponding path program 1 times [2018-01-24 17:03:49,654 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 17:03:49,655 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:03:49,655 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:03:49,655 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:03:49,655 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 17:03:49,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 17:03:49,668 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 17:03:49,795 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 17:03:49,796 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 17:03:49,796 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-01-24 17:03:49,796 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 17:03:49,796 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-24 17:03:49,796 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-24 17:03:49,796 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-01-24 17:03:49,796 INFO L87 Difference]: Start difference. First operand 207 states and 238 transitions. Second operand 8 states. [2018-01-24 17:03:50,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 17:03:50,249 INFO L93 Difference]: Finished difference Result 321 states and 357 transitions. [2018-01-24 17:03:50,249 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-24 17:03:50,249 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2018-01-24 17:03:50,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 17:03:50,251 INFO L225 Difference]: With dead ends: 321 [2018-01-24 17:03:50,251 INFO L226 Difference]: Without dead ends: 317 [2018-01-24 17:03:50,252 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 17:03:50,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2018-01-24 17:03:50,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 211. [2018-01-24 17:03:50,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-01-24 17:03:50,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 244 transitions. [2018-01-24 17:03:50,260 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 244 transitions. Word has length 27 [2018-01-24 17:03:50,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 17:03:50,260 INFO L432 AbstractCegarLoop]: Abstraction has 211 states and 244 transitions. [2018-01-24 17:03:50,260 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-24 17:03:50,260 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 244 transitions. [2018-01-24 17:03:50,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-01-24 17:03:50,261 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 17:03:50,261 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 17:03:50,261 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 17:03:50,261 INFO L82 PathProgramCache]: Analyzing trace with hash -2086546122, now seen corresponding path program 1 times [2018-01-24 17:03:50,262 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 17:03:50,262 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:03:50,262 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:03:50,263 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:03:50,263 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 17:03:50,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 17:03:50,272 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 17:03:50,502 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 17:03:50,503 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 17:03:50,503 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-01-24 17:03:50,503 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 17:03:50,503 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-24 17:03:50,504 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-24 17:03:50,504 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-01-24 17:03:50,504 INFO L87 Difference]: Start difference. First operand 211 states and 244 transitions. Second operand 7 states. [2018-01-24 17:03:50,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 17:03:50,791 INFO L93 Difference]: Finished difference Result 423 states and 470 transitions. [2018-01-24 17:03:50,792 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-24 17:03:50,792 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2018-01-24 17:03:50,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 17:03:50,793 INFO L225 Difference]: With dead ends: 423 [2018-01-24 17:03:50,793 INFO L226 Difference]: Without dead ends: 343 [2018-01-24 17:03:50,794 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2018-01-24 17:03:50,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2018-01-24 17:03:50,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 223. [2018-01-24 17:03:50,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2018-01-24 17:03:50,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 256 transitions. [2018-01-24 17:03:50,803 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 256 transitions. Word has length 27 [2018-01-24 17:03:50,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 17:03:50,803 INFO L432 AbstractCegarLoop]: Abstraction has 223 states and 256 transitions. [2018-01-24 17:03:50,803 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-24 17:03:50,803 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 256 transitions. [2018-01-24 17:03:50,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-01-24 17:03:50,804 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 17:03:50,804 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 17:03:50,804 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 17:03:50,805 INFO L82 PathProgramCache]: Analyzing trace with hash -260268355, now seen corresponding path program 1 times [2018-01-24 17:03:50,805 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 17:03:50,806 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:03:50,806 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:03:50,806 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:03:50,806 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 17:03:50,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 17:03:50,816 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 17:03:50,945 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 17:03:50,945 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 17:03:50,945 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-24 17:03:50,946 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 29 with the following transitions: [2018-01-24 17:03:50,948 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 17:03:51,012 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-24 17:03:51,012 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-24 17:03:51,347 INFO L262 AbstractInterpreter]: Error location(s) were unreachable [2018-01-24 17:03:51,349 INFO L268 AbstractInterpreter]: Visited 25 different actions 43 times. Merged at 10 different actions 16 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 29 variables. [2018-01-24 17:03:51,370 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-01-24 17:03:51,556 INFO L232 lantSequenceWeakener]: Weakened 25 states. On average, predicates are now at 51.45% of their original sizes. [2018-01-24 17:03:51,557 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-01-24 17:03:51,843 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-01-24 17:03:51,844 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-24 17:03:51,844 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [8] total 22 [2018-01-24 17:03:51,844 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 17:03:51,845 INFO L409 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-01-24 17:03:51,845 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-01-24 17:03:51,845 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2018-01-24 17:03:51,845 INFO L87 Difference]: Start difference. First operand 223 states and 256 transitions. Second operand 16 states. [2018-01-24 17:03:52,568 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-24 17:03:52,569 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.vpdomain.WeqCongruenceClosure.(WeqCongruenceClosure.java:157) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.vpdomain.WeqCcManager.copyWeqCc(WeqCcManager.java:1327) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.vpdomain.WeqCcManager.isStrongerThan(WeqCcManager.java:582) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.vpdomain.EqConstraint.isStrongerThan(EqConstraint.java:283) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.vp.EqState.isSubsetOf(EqState.java:199) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.vp.EqState.isSubsetOf(EqState.java:1) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.DisjunctiveAbstractState.getMaximalElements(DisjunctiveAbstractState.java:564) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.DisjunctiveAbstractState.crossProduct(DisjunctiveAbstractState.java:407) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.DisjunctiveAbstractState.intersect(DisjunctiveAbstractState.java:291) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarAbsIntRunner$AbsIntPredicateUnifier.lambda$3(CegarAbsIntRunner.java:684) at java.util.stream.ReduceOps$2ReducingSink.accept(ReduceOps.java:123) at java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1548) at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481) at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471) at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708) at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.util.stream.ReferencePipeline.reduce(ReferencePipeline.java:479) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarAbsIntRunner$AbsIntPredicateUnifier.getOrConstructPredicateForConjunction(CegarAbsIntRunner.java:684) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.getOrConstructPredicate(DeterministicInterpolantAutomaton.java:261) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.constructSuccessorsAndTransitions(DeterministicInterpolantAutomaton.java:283) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:78) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:234) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1054) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:956) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:185) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:552) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:522) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:316) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:294) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:149) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:113) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:117) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:324) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.runToolchainDefault(DefaultToolchainJob.java:221) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.BasicToolchainJob.run(BasicToolchainJob.java:134) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-01-24 17:03:52,594 INFO L168 Benchmark]: Toolchain (without parser) took 7910.99 ms. Allocated memory was 305.7 MB in the beginning and 555.7 MB in the end (delta: 250.1 MB). Free memory was 264.7 MB in the beginning and 438.0 MB in the end (delta: -173.3 MB). Peak memory consumption was 76.8 MB. Max. memory is 5.3 GB. [2018-01-24 17:03:52,595 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 305.7 MB. Free memory is still 270.7 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-24 17:03:52,595 INFO L168 Benchmark]: CACSL2BoogieTranslator took 217.26 ms. Allocated memory is still 305.7 MB. Free memory was 264.7 MB in the beginning and 252.8 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 5.3 GB. [2018-01-24 17:03:52,595 INFO L168 Benchmark]: Boogie Preprocessor took 43.80 ms. Allocated memory is still 305.7 MB. Free memory was 252.8 MB in the beginning and 250.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-24 17:03:52,595 INFO L168 Benchmark]: RCFGBuilder took 690.62 ms. Allocated memory is still 305.7 MB. Free memory was 250.8 MB in the beginning and 207.8 MB in the end (delta: 43.0 MB). Peak memory consumption was 43.0 MB. Max. memory is 5.3 GB. [2018-01-24 17:03:52,596 INFO L168 Benchmark]: TraceAbstraction took 6951.28 ms. Allocated memory was 305.7 MB in the beginning and 555.7 MB in the end (delta: 250.1 MB). Free memory was 207.8 MB in the beginning and 438.0 MB in the end (delta: -230.2 MB). Peak memory consumption was 19.9 MB. Max. memory is 5.3 GB. [2018-01-24 17:03:52,597 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 305.7 MB. Free memory is still 270.7 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 217.26 ms. Allocated memory is still 305.7 MB. Free memory was 264.7 MB in the beginning and 252.8 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 43.80 ms. Allocated memory is still 305.7 MB. Free memory was 252.8 MB in the beginning and 250.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 690.62 ms. Allocated memory is still 305.7 MB. Free memory was 250.8 MB in the beginning and 207.8 MB in the end (delta: 43.0 MB). Peak memory consumption was 43.0 MB. Max. memory is 5.3 GB. * TraceAbstraction took 6951.28 ms. Allocated memory was 305.7 MB in the beginning and 555.7 MB in the end (delta: 250.1 MB). Free memory was 207.8 MB in the beginning and 438.0 MB in the end (delta: -230.2 MB). Peak memory consumption was 19.9 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 23 LocStat_MAX_WEQGRAPH_SIZE : 0 LocStat_MAX_SIZEOF_WEQEDGELABEL : 0 LocStat_NO_SUPPORTING_EQUALITIES : 275 LocStat_NO_SUPPORTING_DISEQUALITIES : 88 LocStat_NO_DISJUNCTIONS : -46 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 29 TransStat_MAX_WEQGRAPH_SIZE : 0 TransStat_MAX_SIZEOF_WEQEDGELABEL : 0 TransStat_NO_SUPPORTING_EQUALITIES : 66 TransStat_NO_SUPPORTING_DISEQUALITIES : 10 TransStat_NO_DISJUNCTIONS : 30 TransStat_MAX_NO_DISJUNCTIONS : 2 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.907715 RENAME_VARIABLES(MILLISECONDS) : 0.509426 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.844189 PROJECTAWAY(MILLISECONDS) : 0.483665 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.001228 DISJOIN(MILLISECONDS) : 0.674433 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.559699 ADD_EQUALITY(MILLISECONDS) : 0.041565 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.016519 #CONJOIN_DISJUNCTIVE : 80 #RENAME_VARIABLES : 132 #UNFREEZE : 0 #CONJOIN : 142 #PROJECTAWAY : 88 #ADD_WEAK_EQUALITY : 21 #DISJOIN : 9 #RENAME_VARIABLES_DISJUNCTIVE : 127 #ADD_EQUALITY : 74 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 4 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.vpdomain.WeqCongruenceClosure.(WeqCongruenceClosure.java:157) RESULT: Ultimate could not prove your program: Toolchain returned no result. Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/tree_dsw_true-valid-memsafety_false-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-24_17-03-52-605.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/tree_dsw_true-valid-memsafety_false-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-VPDomainBenchmark-0-2018-01-24_17-03-52-605.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/tree_dsw_true-valid-memsafety_false-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-BenchmarkWithCounters-0-2018-01-24_17-03-52-605.csv Received shutdown request...