java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label02_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-14 17:09:23,982 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-14 17:09:23,985 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-14 17:09:23,999 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-14 17:09:23,999 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-14 17:09:24,000 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-14 17:09:24,002 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-14 17:09:24,003 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-14 17:09:24,005 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-14 17:09:24,006 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-14 17:09:24,007 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-14 17:09:24,008 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-14 17:09:24,009 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-14 17:09:24,010 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-14 17:09:24,011 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-14 17:09:24,012 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-14 17:09:24,014 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-14 17:09:24,019 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-14 17:09:24,023 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-14 17:09:24,025 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-14 17:09:24,030 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-14 17:09:24,031 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-14 17:09:24,037 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-14 17:09:24,037 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-14 17:09:24,037 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-14 17:09:24,039 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-14 17:09:24,041 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-14 17:09:24,042 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-14 17:09:24,043 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-14 17:09:24,044 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-14 17:09:24,045 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-14 17:09:24,046 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-14 17:09:24,046 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-14 17:09:24,046 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-14 17:09:24,049 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-14 17:09:24,050 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-14 17:09:24,050 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-14 17:09:24,065 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-14 17:09:24,065 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-14 17:09:24,066 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-14 17:09:24,066 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-14 17:09:24,067 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-14 17:09:24,067 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-14 17:09:24,067 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-14 17:09:24,067 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-14 17:09:24,067 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-14 17:09:24,068 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-14 17:09:24,068 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-14 17:09:24,068 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-14 17:09:24,069 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-14 17:09:24,069 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-14 17:09:24,069 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-14 17:09:24,069 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-14 17:09:24,069 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-14 17:09:24,070 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-14 17:09:24,070 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-14 17:09:24,070 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-14 17:09:24,070 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-14 17:09:24,070 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-14 17:09:24,071 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-14 17:09:24,071 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 17:09:24,071 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-14 17:09:24,071 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-14 17:09:24,071 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-14 17:09:24,072 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-14 17:09:24,072 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-14 17:09:24,072 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-14 17:09:24,072 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-14 17:09:24,072 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-14 17:09:24,073 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-14 17:09:24,137 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-14 17:09:24,156 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-14 17:09:24,161 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-14 17:09:24,163 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-14 17:09:24,163 INFO L276 PluginConnector]: CDTParser initialized [2018-09-14 17:09:24,164 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label02_true-unreach-call.c [2018-09-14 17:09:24,522 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57ba9056b/e2d22919c1314a0fad36be1c49911ab4/FLAG0b23144b7 [2018-09-14 17:09:24,867 INFO L277 CDTParser]: Found 1 translation units. [2018-09-14 17:09:24,869 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label02_true-unreach-call.c [2018-09-14 17:09:24,890 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57ba9056b/e2d22919c1314a0fad36be1c49911ab4/FLAG0b23144b7 [2018-09-14 17:09:24,912 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57ba9056b/e2d22919c1314a0fad36be1c49911ab4 [2018-09-14 17:09:24,925 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-14 17:09:24,929 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-14 17:09:24,933 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-14 17:09:24,933 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-14 17:09:24,944 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-14 17:09:24,945 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 05:09:24" (1/1) ... [2018-09-14 17:09:24,949 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58150d2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:09:24, skipping insertion in model container [2018-09-14 17:09:24,949 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 05:09:24" (1/1) ... [2018-09-14 17:09:24,961 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-14 17:09:25,607 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 17:09:25,626 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-14 17:09:25,909 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 17:09:25,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:09:25 WrapperNode [2018-09-14 17:09:25,988 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-14 17:09:25,989 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-14 17:09:25,989 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-14 17:09:25,990 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-14 17:09:25,999 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:09:25" (1/1) ... [2018-09-14 17:09:26,035 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:09:25" (1/1) ... [2018-09-14 17:09:26,121 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-14 17:09:26,122 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-14 17:09:26,122 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-14 17:09:26,122 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-14 17:09:26,367 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:09:25" (1/1) ... [2018-09-14 17:09:26,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:09:25" (1/1) ... [2018-09-14 17:09:26,377 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:09:25" (1/1) ... [2018-09-14 17:09:26,377 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:09:25" (1/1) ... [2018-09-14 17:09:26,421 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:09:25" (1/1) ... [2018-09-14 17:09:26,432 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:09:25" (1/1) ... [2018-09-14 17:09:26,453 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:09:25" (1/1) ... [2018-09-14 17:09:26,473 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-14 17:09:26,475 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-14 17:09:26,476 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-14 17:09:26,476 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-14 17:09:26,478 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:09:25" (1/1) ... No working directory specified, using /storage/repos/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 [2018-09-14 17:09:26,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-14 17:09:26,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-14 17:09:26,557 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-14 17:09:26,557 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-14 17:09:26,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-14 17:09:26,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-14 17:09:26,558 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-14 17:09:26,558 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-14 17:09:31,155 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-14 17:09:31,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 05:09:31 BoogieIcfgContainer [2018-09-14 17:09:31,156 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-14 17:09:31,158 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-14 17:09:31,158 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-14 17:09:31,161 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-14 17:09:31,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 05:09:24" (1/3) ... [2018-09-14 17:09:31,162 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59cfec46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 05:09:31, skipping insertion in model container [2018-09-14 17:09:31,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:09:25" (2/3) ... [2018-09-14 17:09:31,163 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59cfec46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 05:09:31, skipping insertion in model container [2018-09-14 17:09:31,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 05:09:31" (3/3) ... [2018-09-14 17:09:31,166 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label02_true-unreach-call.c [2018-09-14 17:09:31,176 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-14 17:09:31,187 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-14 17:09:31,240 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-14 17:09:31,241 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-14 17:09:31,241 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-14 17:09:31,241 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-14 17:09:31,241 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-14 17:09:31,242 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-14 17:09:31,242 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-14 17:09:31,242 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-14 17:09:31,242 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-14 17:09:31,271 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-09-14 17:09:31,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-09-14 17:09:31,281 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:09:31,282 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:09:31,284 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:09:31,289 INFO L82 PathProgramCache]: Analyzing trace with hash -1008235991, now seen corresponding path program 1 times [2018-09-14 17:09:31,292 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:09:31,339 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:09:31,339 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:09:31,339 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:09:31,340 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:09:31,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:09:31,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:09:31,865 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:09:31,865 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 17:09:31,866 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:09:31,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 17:09:31,890 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 17:09:31,890 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:09:31,894 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-09-14 17:09:35,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:09:35,110 INFO L93 Difference]: Finished difference Result 985 states and 1761 transitions. [2018-09-14 17:09:35,112 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 17:09:35,113 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2018-09-14 17:09:35,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:09:35,135 INFO L225 Difference]: With dead ends: 985 [2018-09-14 17:09:35,135 INFO L226 Difference]: Without dead ends: 686 [2018-09-14 17:09:35,145 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:09:35,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2018-09-14 17:09:35,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 686. [2018-09-14 17:09:35,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 686 states. [2018-09-14 17:09:35,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 1046 transitions. [2018-09-14 17:09:35,261 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 1046 transitions. Word has length 61 [2018-09-14 17:09:35,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:09:35,262 INFO L480 AbstractCegarLoop]: Abstraction has 686 states and 1046 transitions. [2018-09-14 17:09:35,262 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 17:09:35,262 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 1046 transitions. [2018-09-14 17:09:35,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-09-14 17:09:35,271 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:09:35,272 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:09:35,272 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:09:35,272 INFO L82 PathProgramCache]: Analyzing trace with hash 512006507, now seen corresponding path program 1 times [2018-09-14 17:09:35,273 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:09:35,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:09:35,274 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:09:35,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:09:35,274 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:09:35,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:09:35,775 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:09:35,775 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:09:35,775 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 17:09:35,775 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:09:35,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:09:35,778 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:09:35,778 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:09:35,778 INFO L87 Difference]: Start difference. First operand 686 states and 1046 transitions. Second operand 6 states. [2018-09-14 17:09:41,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:09:41,796 INFO L93 Difference]: Finished difference Result 2340 states and 3736 transitions. [2018-09-14 17:09:41,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:09:41,798 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 142 [2018-09-14 17:09:41,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:09:41,811 INFO L225 Difference]: With dead ends: 2340 [2018-09-14 17:09:41,811 INFO L226 Difference]: Without dead ends: 1660 [2018-09-14 17:09:41,817 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-09-14 17:09:41,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1660 states. [2018-09-14 17:09:41,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1660 to 1641. [2018-09-14 17:09:41,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1641 states. [2018-09-14 17:09:41,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1641 states to 1641 states and 2355 transitions. [2018-09-14 17:09:41,895 INFO L78 Accepts]: Start accepts. Automaton has 1641 states and 2355 transitions. Word has length 142 [2018-09-14 17:09:41,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:09:41,896 INFO L480 AbstractCegarLoop]: Abstraction has 1641 states and 2355 transitions. [2018-09-14 17:09:41,896 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:09:41,896 INFO L276 IsEmpty]: Start isEmpty. Operand 1641 states and 2355 transitions. [2018-09-14 17:09:41,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-09-14 17:09:41,902 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:09:41,902 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:09:41,902 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:09:41,903 INFO L82 PathProgramCache]: Analyzing trace with hash -1402056089, now seen corresponding path program 1 times [2018-09-14 17:09:41,903 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:09:41,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:09:41,904 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:09:41,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:09:41,904 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:09:41,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:09:42,224 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:09:42,224 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:09:42,224 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 17:09:42,225 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:09:42,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 17:09:42,226 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 17:09:42,226 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:09:42,226 INFO L87 Difference]: Start difference. First operand 1641 states and 2355 transitions. Second operand 4 states. [2018-09-14 17:09:45,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:09:45,645 INFO L93 Difference]: Finished difference Result 6235 states and 9307 transitions. [2018-09-14 17:09:45,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 17:09:45,650 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 156 [2018-09-14 17:09:45,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:09:45,684 INFO L225 Difference]: With dead ends: 6235 [2018-09-14 17:09:45,685 INFO L226 Difference]: Without dead ends: 4600 [2018-09-14 17:09:45,699 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:09:45,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4600 states. [2018-09-14 17:09:45,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4600 to 4575. [2018-09-14 17:09:45,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4575 states. [2018-09-14 17:09:45,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4575 states to 4575 states and 6360 transitions. [2018-09-14 17:09:45,853 INFO L78 Accepts]: Start accepts. Automaton has 4575 states and 6360 transitions. Word has length 156 [2018-09-14 17:09:45,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:09:45,853 INFO L480 AbstractCegarLoop]: Abstraction has 4575 states and 6360 transitions. [2018-09-14 17:09:45,853 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 17:09:45,854 INFO L276 IsEmpty]: Start isEmpty. Operand 4575 states and 6360 transitions. [2018-09-14 17:09:45,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2018-09-14 17:09:45,860 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:09:45,860 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:09:45,861 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:09:45,861 INFO L82 PathProgramCache]: Analyzing trace with hash -1808581075, now seen corresponding path program 1 times [2018-09-14 17:09:45,861 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:09:45,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:09:45,862 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:09:45,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:09:45,863 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:09:45,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:09:46,206 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 48 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:09:46,207 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:09:46,207 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:09:46,216 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:09:46,216 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:09:46,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:09:46,310 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:09:46,414 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:09:46,415 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:09:46,970 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:09:47,003 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-14 17:09:47,003 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2018-09-14 17:09:47,004 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:09:47,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 17:09:47,005 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 17:09:47,005 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-09-14 17:09:47,009 INFO L87 Difference]: Start difference. First operand 4575 states and 6360 transitions. Second operand 3 states. [2018-09-14 17:09:49,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:09:49,336 INFO L93 Difference]: Finished difference Result 11273 states and 16210 transitions. [2018-09-14 17:09:49,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 17:09:49,341 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 193 [2018-09-14 17:09:49,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:09:49,384 INFO L225 Difference]: With dead ends: 11273 [2018-09-14 17:09:49,385 INFO L226 Difference]: Without dead ends: 6893 [2018-09-14 17:09:49,416 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 386 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-09-14 17:09:49,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6893 states. [2018-09-14 17:09:49,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6893 to 6699. [2018-09-14 17:09:49,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6699 states. [2018-09-14 17:09:49,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6699 states to 6699 states and 9059 transitions. [2018-09-14 17:09:49,601 INFO L78 Accepts]: Start accepts. Automaton has 6699 states and 9059 transitions. Word has length 193 [2018-09-14 17:09:49,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:09:49,602 INFO L480 AbstractCegarLoop]: Abstraction has 6699 states and 9059 transitions. [2018-09-14 17:09:49,602 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 17:09:49,602 INFO L276 IsEmpty]: Start isEmpty. Operand 6699 states and 9059 transitions. [2018-09-14 17:09:49,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2018-09-14 17:09:49,616 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:09:49,616 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:09:49,617 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:09:49,617 INFO L82 PathProgramCache]: Analyzing trace with hash 1389847326, now seen corresponding path program 1 times [2018-09-14 17:09:49,617 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:09:49,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:09:49,618 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:09:49,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:09:49,618 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:09:49,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:09:50,245 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-09-14 17:09:50,863 WARN L178 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 12 [2018-09-14 17:09:51,279 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2018-09-14 17:09:51,706 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 158 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:09:51,707 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:09:51,707 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:09:51,714 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:09:51,715 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:09:51,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:09:51,818 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:09:52,078 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 113 proven. 2 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2018-09-14 17:09:52,078 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:09:52,574 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 113 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:09:52,608 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:09:52,608 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:09:52,638 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:09:52,638 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:09:52,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:09:52,930 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:09:53,018 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 113 proven. 2 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2018-09-14 17:09:53,019 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:09:53,274 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-09-14 17:09:53,647 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 113 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:09:53,650 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:09:53,650 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 7, 8, 7, 8] total 24 [2018-09-14 17:09:53,651 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:09:53,652 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-09-14 17:09:53,652 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-09-14 17:09:53,653 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=470, Unknown=0, NotChecked=0, Total=552 [2018-09-14 17:09:53,653 INFO L87 Difference]: Start difference. First operand 6699 states and 9059 transitions. Second operand 19 states. [2018-09-14 17:09:53,893 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 28 [2018-09-14 17:10:05,430 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 38 [2018-09-14 17:10:22,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:10:22,808 INFO L93 Difference]: Finished difference Result 25193 states and 41301 transitions. [2018-09-14 17:10:22,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-09-14 17:10:22,815 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 298 [2018-09-14 17:10:22,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:10:22,947 INFO L225 Difference]: With dead ends: 25193 [2018-09-14 17:10:22,947 INFO L226 Difference]: Without dead ends: 17939 [2018-09-14 17:10:23,074 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1336 GetRequests, 1201 SyntacticMatches, 4 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6400 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=2544, Invalid=15012, Unknown=0, NotChecked=0, Total=17556 [2018-09-14 17:10:23,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17939 states. [2018-09-14 17:10:23,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17939 to 16836. [2018-09-14 17:10:23,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16836 states. [2018-09-14 17:10:23,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16836 states to 16836 states and 21723 transitions. [2018-09-14 17:10:23,657 INFO L78 Accepts]: Start accepts. Automaton has 16836 states and 21723 transitions. Word has length 298 [2018-09-14 17:10:23,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:10:23,658 INFO L480 AbstractCegarLoop]: Abstraction has 16836 states and 21723 transitions. [2018-09-14 17:10:23,658 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-09-14 17:10:23,659 INFO L276 IsEmpty]: Start isEmpty. Operand 16836 states and 21723 transitions. [2018-09-14 17:10:23,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2018-09-14 17:10:23,706 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:10:23,707 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:10:23,707 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:10:23,708 INFO L82 PathProgramCache]: Analyzing trace with hash 391462463, now seen corresponding path program 1 times [2018-09-14 17:10:23,708 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:10:23,709 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:10:23,709 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:10:23,709 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:10:23,709 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:10:23,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:10:24,537 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 168 proven. 206 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2018-09-14 17:10:24,537 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:10:24,537 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:10:24,550 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:10:24,550 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:10:24,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:10:24,677 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:10:26,612 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 318 proven. 107 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2018-09-14 17:10:26,612 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:10:27,069 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 273 proven. 104 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2018-09-14 17:10:27,092 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:10:27,092 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:10:27,107 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:10:27,108 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:10:27,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:10:27,380 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:10:28,099 WARN L178 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 16 [2018-09-14 17:10:30,269 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 318 proven. 107 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2018-09-14 17:10:30,269 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:10:30,756 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 273 proven. 104 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2018-09-14 17:10:30,759 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:10:30,759 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 5, 8, 5] total 15 [2018-09-14 17:10:30,759 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:10:30,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-14 17:10:30,760 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-14 17:10:30,760 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=150, Unknown=3, NotChecked=0, Total=210 [2018-09-14 17:10:30,761 INFO L87 Difference]: Start difference. First operand 16836 states and 21723 transitions. Second operand 10 states. [2018-09-14 17:10:34,657 WARN L178 SmtUtils]: Spent 518.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-09-14 17:11:51,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:11:51,259 INFO L93 Difference]: Finished difference Result 49424 states and 72210 transitions. [2018-09-14 17:11:51,262 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-09-14 17:11:51,262 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 406 [2018-09-14 17:11:51,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:11:51,458 INFO L225 Difference]: With dead ends: 49424 [2018-09-14 17:11:51,458 INFO L226 Difference]: Without dead ends: 32975 [2018-09-14 17:11:51,532 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1665 GetRequests, 1628 SyntacticMatches, 7 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 17.0s TimeCoverageRelationStatistics Valid=235, Invalid=743, Unknown=14, NotChecked=0, Total=992 [2018-09-14 17:11:51,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32975 states. [2018-09-14 17:11:52,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32975 to 32383. [2018-09-14 17:11:52,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32383 states. [2018-09-14 17:11:52,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32383 states to 32383 states and 43761 transitions. [2018-09-14 17:11:52,507 INFO L78 Accepts]: Start accepts. Automaton has 32383 states and 43761 transitions. Word has length 406 [2018-09-14 17:11:52,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:11:52,507 INFO L480 AbstractCegarLoop]: Abstraction has 32383 states and 43761 transitions. [2018-09-14 17:11:52,507 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-14 17:11:52,508 INFO L276 IsEmpty]: Start isEmpty. Operand 32383 states and 43761 transitions. [2018-09-14 17:11:52,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2018-09-14 17:11:52,636 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:11:52,636 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:11:52,637 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:11:52,637 INFO L82 PathProgramCache]: Analyzing trace with hash -1251224200, now seen corresponding path program 1 times [2018-09-14 17:11:52,637 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:11:52,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:11:52,638 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:11:52,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:11:52,638 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:11:52,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:11:53,612 INFO L134 CoverageAnalysis]: Checked inductivity of 804 backedges. 227 proven. 382 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2018-09-14 17:11:53,613 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:11:53,613 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:11:53,626 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:11:53,626 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:11:53,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:11:53,780 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:11:54,099 INFO L134 CoverageAnalysis]: Checked inductivity of 804 backedges. 517 proven. 2 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2018-09-14 17:11:54,099 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:11:55,118 INFO L134 CoverageAnalysis]: Checked inductivity of 804 backedges. 517 proven. 2 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2018-09-14 17:11:55,139 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:11:55,139 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:11:55,156 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:11:55,156 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:11:55,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:11:55,513 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:11:55,683 INFO L134 CoverageAnalysis]: Checked inductivity of 804 backedges. 517 proven. 10 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2018-09-14 17:11:55,683 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:11:56,492 INFO L134 CoverageAnalysis]: Checked inductivity of 804 backedges. 517 proven. 2 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2018-09-14 17:11:56,495 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:11:56,495 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5, 6, 5] total 13 [2018-09-14 17:11:56,495 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:11:56,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-14 17:11:56,497 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-14 17:11:56,497 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2018-09-14 17:11:56,497 INFO L87 Difference]: Start difference. First operand 32383 states and 43761 transitions. Second operand 10 states. [2018-09-14 17:12:06,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:12:06,686 INFO L93 Difference]: Finished difference Result 73700 states and 103223 transitions. [2018-09-14 17:12:06,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-09-14 17:12:06,686 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 507 [2018-09-14 17:12:06,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:12:06,883 INFO L225 Difference]: With dead ends: 73700 [2018-09-14 17:12:06,883 INFO L226 Difference]: Without dead ends: 41706 [2018-09-14 17:12:07,010 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2102 GetRequests, 2053 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 613 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=404, Invalid=1852, Unknown=0, NotChecked=0, Total=2256 [2018-09-14 17:12:07,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41706 states. [2018-09-14 17:12:08,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41706 to 41486. [2018-09-14 17:12:08,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41486 states. [2018-09-14 17:12:08,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41486 states to 41486 states and 55480 transitions. [2018-09-14 17:12:08,350 INFO L78 Accepts]: Start accepts. Automaton has 41486 states and 55480 transitions. Word has length 507 [2018-09-14 17:12:08,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:12:08,350 INFO L480 AbstractCegarLoop]: Abstraction has 41486 states and 55480 transitions. [2018-09-14 17:12:08,351 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-14 17:12:08,351 INFO L276 IsEmpty]: Start isEmpty. Operand 41486 states and 55480 transitions. [2018-09-14 17:12:08,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 519 [2018-09-14 17:12:08,467 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:12:08,468 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 17:12:08,468 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:12:08,468 INFO L82 PathProgramCache]: Analyzing trace with hash -635554679, now seen corresponding path program 1 times [2018-09-14 17:12:08,469 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:12:08,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:12:08,470 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:12:08,470 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:12:08,470 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:12:08,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:12:09,904 INFO L134 CoverageAnalysis]: Checked inductivity of 814 backedges. 394 proven. 294 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2018-09-14 17:12:09,905 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:12:09,905 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:12:09,913 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:12:09,913 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:12:10,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:12:10,061 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:12:10,578 INFO L134 CoverageAnalysis]: Checked inductivity of 814 backedges. 517 proven. 2 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2018-09-14 17:12:10,578 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:12:11,529 INFO L134 CoverageAnalysis]: Checked inductivity of 814 backedges. 517 proven. 2 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2018-09-14 17:12:11,550 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:12:11,551 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:12:11,566 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:12:11,566 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:12:11,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:12:11,897 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:12:12,355 INFO L134 CoverageAnalysis]: Checked inductivity of 814 backedges. 517 proven. 2 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2018-09-14 17:12:12,355 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:12:12,668 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2018-09-14 17:12:13,171 INFO L134 CoverageAnalysis]: Checked inductivity of 814 backedges. 517 proven. 2 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2018-09-14 17:12:13,173 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:12:13,174 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 6, 6, 6, 6] total 26 [2018-09-14 17:12:13,174 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:12:13,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-09-14 17:12:13,176 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-09-14 17:12:13,177 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=532, Unknown=0, NotChecked=0, Total=650 [2018-09-14 17:12:13,177 INFO L87 Difference]: Start difference. First operand 41486 states and 55480 transitions. Second operand 19 states. [2018-09-14 17:12:36,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:12:36,610 INFO L93 Difference]: Finished difference Result 97820 states and 149345 transitions. [2018-09-14 17:12:36,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-09-14 17:12:36,610 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 518 [2018-09-14 17:12:36,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:12:36,978 INFO L225 Difference]: With dead ends: 97820 [2018-09-14 17:12:36,978 INFO L226 Difference]: Without dead ends: 56529 [2018-09-14 17:12:37,213 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2227 GetRequests, 2120 SyntacticMatches, 4 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3732 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=1811, Invalid=9109, Unknown=0, NotChecked=0, Total=10920 [2018-09-14 17:12:37,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56529 states. [2018-09-14 17:12:38,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56529 to 53568. [2018-09-14 17:12:38,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53568 states. [2018-09-14 17:12:39,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53568 states to 53568 states and 67430 transitions. [2018-09-14 17:12:39,045 INFO L78 Accepts]: Start accepts. Automaton has 53568 states and 67430 transitions. Word has length 518 [2018-09-14 17:12:39,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:12:39,045 INFO L480 AbstractCegarLoop]: Abstraction has 53568 states and 67430 transitions. [2018-09-14 17:12:39,045 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-09-14 17:12:39,046 INFO L276 IsEmpty]: Start isEmpty. Operand 53568 states and 67430 transitions. [2018-09-14 17:12:39,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 519 [2018-09-14 17:12:39,144 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:12:39,144 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 17:12:39,145 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:12:39,145 INFO L82 PathProgramCache]: Analyzing trace with hash 1736162187, now seen corresponding path program 1 times [2018-09-14 17:12:39,145 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:12:39,146 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:12:39,146 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:12:39,146 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:12:39,146 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:12:39,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:12:39,519 INFO L134 CoverageAnalysis]: Checked inductivity of 814 backedges. 232 proven. 2 refuted. 0 times theorem prover too weak. 580 trivial. 0 not checked. [2018-09-14 17:12:39,519 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:12:39,519 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:12:39,531 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:12:39,531 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:12:39,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:12:39,681 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:12:39,803 INFO L134 CoverageAnalysis]: Checked inductivity of 814 backedges. 462 proven. 0 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2018-09-14 17:12:39,804 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:12:40,518 INFO L134 CoverageAnalysis]: Checked inductivity of 814 backedges. 232 proven. 2 refuted. 0 times theorem prover too weak. 580 trivial. 0 not checked. [2018-09-14 17:12:40,539 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:12:40,540 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 3 [2018-09-14 17:12:40,540 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:12:40,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 17:12:40,541 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 17:12:40,541 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 17:12:40,542 INFO L87 Difference]: Start difference. First operand 53568 states and 67430 transitions. Second operand 3 states. [2018-09-14 17:12:42,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:12:42,299 INFO L93 Difference]: Finished difference Result 117232 states and 150258 transitions. [2018-09-14 17:12:42,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 17:12:42,301 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 518 [2018-09-14 17:12:42,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:12:42,474 INFO L225 Difference]: With dead ends: 117232 [2018-09-14 17:12:42,474 INFO L226 Difference]: Without dead ends: 53021 [2018-09-14 17:12:42,691 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1038 GetRequests, 1037 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 17:12:42,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53021 states. [2018-09-14 17:12:43,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53021 to 53019. [2018-09-14 17:12:43,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53019 states. [2018-09-14 17:12:43,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53019 states to 53019 states and 64617 transitions. [2018-09-14 17:12:43,745 INFO L78 Accepts]: Start accepts. Automaton has 53019 states and 64617 transitions. Word has length 518 [2018-09-14 17:12:43,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:12:43,746 INFO L480 AbstractCegarLoop]: Abstraction has 53019 states and 64617 transitions. [2018-09-14 17:12:43,746 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 17:12:43,746 INFO L276 IsEmpty]: Start isEmpty. Operand 53019 states and 64617 transitions. [2018-09-14 17:12:43,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 546 [2018-09-14 17:12:43,828 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:12:43,829 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 17:12:43,829 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:12:43,829 INFO L82 PathProgramCache]: Analyzing trace with hash 2140308035, now seen corresponding path program 1 times [2018-09-14 17:12:43,829 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:12:43,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:12:43,830 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:12:43,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:12:43,830 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:12:43,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:12:44,848 INFO L134 CoverageAnalysis]: Checked inductivity of 877 backedges. 431 proven. 123 refuted. 0 times theorem prover too weak. 323 trivial. 0 not checked. [2018-09-14 17:12:44,849 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:12:44,849 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:12:44,856 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:12:44,856 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:12:45,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:12:45,020 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:12:45,813 INFO L134 CoverageAnalysis]: Checked inductivity of 877 backedges. 693 proven. 2 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2018-09-14 17:12:45,813 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:12:46,250 INFO L134 CoverageAnalysis]: Checked inductivity of 877 backedges. 443 proven. 104 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2018-09-14 17:12:46,273 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:12:46,273 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:12:46,288 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:12:46,288 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:12:46,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:12:46,690 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:12:47,058 INFO L134 CoverageAnalysis]: Checked inductivity of 877 backedges. 693 proven. 2 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2018-09-14 17:12:47,058 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:12:47,567 INFO L134 CoverageAnalysis]: Checked inductivity of 877 backedges. 443 proven. 104 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2018-09-14 17:12:47,570 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:12:47,571 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5, 5, 5] total 19 [2018-09-14 17:12:47,571 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:12:47,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-09-14 17:12:47,572 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-09-14 17:12:47,572 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2018-09-14 17:12:47,573 INFO L87 Difference]: Start difference. First operand 53019 states and 64617 transitions. Second operand 16 states. [2018-09-14 17:12:48,666 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-09-14 17:12:56,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:12:56,834 INFO L93 Difference]: Finished difference Result 99819 states and 124270 transitions. [2018-09-14 17:12:56,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-09-14 17:12:56,834 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 545 [2018-09-14 17:12:56,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:12:56,949 INFO L225 Difference]: With dead ends: 99819 [2018-09-14 17:12:56,949 INFO L226 Difference]: Without dead ends: 42775 [2018-09-14 17:12:57,063 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2263 GetRequests, 2203 SyntacticMatches, 9 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 833 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=591, Invalid=2165, Unknown=0, NotChecked=0, Total=2756 [2018-09-14 17:12:57,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42775 states. [2018-09-14 17:12:57,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42775 to 42655. [2018-09-14 17:12:57,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42655 states. [2018-09-14 17:12:58,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42655 states to 42655 states and 52632 transitions. [2018-09-14 17:12:58,072 INFO L78 Accepts]: Start accepts. Automaton has 42655 states and 52632 transitions. Word has length 545 [2018-09-14 17:12:58,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:12:58,073 INFO L480 AbstractCegarLoop]: Abstraction has 42655 states and 52632 transitions. [2018-09-14 17:12:58,074 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-09-14 17:12:58,074 INFO L276 IsEmpty]: Start isEmpty. Operand 42655 states and 52632 transitions. [2018-09-14 17:12:58,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 551 [2018-09-14 17:12:58,187 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:12:58,188 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:12:58,188 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:12:58,189 INFO L82 PathProgramCache]: Analyzing trace with hash 186667702, now seen corresponding path program 1 times [2018-09-14 17:12:58,189 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:12:58,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:12:58,190 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:12:58,190 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:12:58,190 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:12:58,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:12:59,186 INFO L134 CoverageAnalysis]: Checked inductivity of 814 backedges. 517 proven. 2 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2018-09-14 17:12:59,186 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:12:59,186 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:12:59,203 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:12:59,203 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:12:59,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:12:59,369 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:13:00,267 INFO L134 CoverageAnalysis]: Checked inductivity of 814 backedges. 517 proven. 2 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2018-09-14 17:13:00,267 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:13:00,976 INFO L134 CoverageAnalysis]: Checked inductivity of 814 backedges. 517 proven. 2 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2018-09-14 17:13:00,997 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:13:00,997 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 15 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:13:01,013 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:13:01,013 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:13:01,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:13:01,383 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:13:01,606 INFO L134 CoverageAnalysis]: Checked inductivity of 814 backedges. 517 proven. 2 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2018-09-14 17:13:01,607 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:13:01,861 INFO L134 CoverageAnalysis]: Checked inductivity of 814 backedges. 517 proven. 2 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2018-09-14 17:13:01,864 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:13:01,865 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6, 6, 6] total 11 [2018-09-14 17:13:01,865 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:13:01,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-14 17:13:01,868 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-14 17:13:01,868 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-14 17:13:01,869 INFO L87 Difference]: Start difference. First operand 42655 states and 52632 transitions. Second operand 8 states. [2018-09-14 17:13:06,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:13:06,699 INFO L93 Difference]: Finished difference Result 87847 states and 111833 transitions. [2018-09-14 17:13:06,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-14 17:13:06,700 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 550 [2018-09-14 17:13:06,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:13:06,814 INFO L225 Difference]: With dead ends: 87847 [2018-09-14 17:13:06,814 INFO L226 Difference]: Without dead ends: 40802 [2018-09-14 17:13:06,901 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2223 GetRequests, 2200 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=135, Invalid=285, Unknown=0, NotChecked=0, Total=420 [2018-09-14 17:13:06,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40802 states. [2018-09-14 17:13:07,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40802 to 38065. [2018-09-14 17:13:07,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38065 states. [2018-09-14 17:13:07,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38065 states to 38065 states and 46135 transitions. [2018-09-14 17:13:07,742 INFO L78 Accepts]: Start accepts. Automaton has 38065 states and 46135 transitions. Word has length 550 [2018-09-14 17:13:07,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:13:07,743 INFO L480 AbstractCegarLoop]: Abstraction has 38065 states and 46135 transitions. [2018-09-14 17:13:07,743 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-14 17:13:07,743 INFO L276 IsEmpty]: Start isEmpty. Operand 38065 states and 46135 transitions. [2018-09-14 17:13:07,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 588 [2018-09-14 17:13:07,839 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:13:07,840 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:13:07,840 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:13:07,840 INFO L82 PathProgramCache]: Analyzing trace with hash 721908230, now seen corresponding path program 1 times [2018-09-14 17:13:07,840 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:13:07,841 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:13:07,841 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:13:07,841 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:13:07,842 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:13:07,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:13:08,581 INFO L134 CoverageAnalysis]: Checked inductivity of 938 backedges. 535 proven. 2 refuted. 0 times theorem prover too weak. 401 trivial. 0 not checked. [2018-09-14 17:13:08,582 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:13:08,582 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:13:08,590 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:13:08,590 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:13:08,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:13:08,754 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:13:09,423 INFO L134 CoverageAnalysis]: Checked inductivity of 938 backedges. 239 proven. 8 refuted. 0 times theorem prover too weak. 691 trivial. 0 not checked. [2018-09-14 17:13:09,424 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:13:10,470 INFO L134 CoverageAnalysis]: Checked inductivity of 938 backedges. 241 proven. 463 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2018-09-14 17:13:10,490 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:13:10,491 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 17 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:13:10,506 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:13:10,506 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:13:10,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:13:10,884 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:13:11,105 INFO L134 CoverageAnalysis]: Checked inductivity of 938 backedges. 239 proven. 8 refuted. 0 times theorem prover too weak. 691 trivial. 0 not checked. [2018-09-14 17:13:11,105 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:13:11,674 INFO L134 CoverageAnalysis]: Checked inductivity of 938 backedges. 241 proven. 463 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2018-09-14 17:13:11,676 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:13:11,677 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 8, 7, 8] total 14 [2018-09-14 17:13:11,677 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:13:11,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-14 17:13:11,678 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-14 17:13:11,678 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2018-09-14 17:13:11,680 INFO L87 Difference]: Start difference. First operand 38065 states and 46135 transitions. Second operand 10 states. [2018-09-14 17:13:17,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:13:17,115 INFO L93 Difference]: Finished difference Result 79264 states and 98106 transitions. [2018-09-14 17:13:17,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-09-14 17:13:17,115 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 587 [2018-09-14 17:13:17,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:13:17,219 INFO L225 Difference]: With dead ends: 79264 [2018-09-14 17:13:17,220 INFO L226 Difference]: Without dead ends: 42957 [2018-09-14 17:13:17,277 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2375 GetRequests, 2343 SyntacticMatches, 8 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=196, Invalid=454, Unknown=0, NotChecked=0, Total=650 [2018-09-14 17:13:17,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42957 states. [2018-09-14 17:13:17,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42957 to 41136. [2018-09-14 17:13:17,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41136 states. [2018-09-14 17:13:17,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41136 states to 41136 states and 50225 transitions. [2018-09-14 17:13:17,995 INFO L78 Accepts]: Start accepts. Automaton has 41136 states and 50225 transitions. Word has length 587 [2018-09-14 17:13:17,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:13:17,995 INFO L480 AbstractCegarLoop]: Abstraction has 41136 states and 50225 transitions. [2018-09-14 17:13:17,995 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-14 17:13:17,996 INFO L276 IsEmpty]: Start isEmpty. Operand 41136 states and 50225 transitions. [2018-09-14 17:13:18,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 817 [2018-09-14 17:13:18,091 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:13:18,092 INFO L376 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:13:18,092 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:13:18,092 INFO L82 PathProgramCache]: Analyzing trace with hash -338754123, now seen corresponding path program 1 times [2018-09-14 17:13:18,092 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:13:18,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:13:18,094 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:13:18,095 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:13:18,095 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:13:18,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:13:19,341 INFO L134 CoverageAnalysis]: Checked inductivity of 2368 backedges. 726 proven. 307 refuted. 0 times theorem prover too weak. 1335 trivial. 0 not checked. [2018-09-14 17:13:19,342 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:13:19,342 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:13:19,354 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:13:19,354 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Received shutdown request... [2018-09-14 17:13:19,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:13:19,586 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:13:19,593 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-09-14 17:13:19,795 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:13:19,796 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-14 17:13:19,801 WARN L206 ceAbstractionStarter]: Timeout [2018-09-14 17:13:19,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 05:13:19 BoogieIcfgContainer [2018-09-14 17:13:19,801 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-14 17:13:19,802 INFO L168 Benchmark]: Toolchain (without parser) took 234876.62 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 180.3 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2018-09-14 17:13:19,803 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-14 17:13:19,804 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1055.60 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. [2018-09-14 17:13:19,804 INFO L168 Benchmark]: Boogie Procedure Inliner took 132.10 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-09-14 17:13:19,805 INFO L168 Benchmark]: Boogie Preprocessor took 353.52 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 818.9 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -945.9 MB). Peak memory consumption was 49.5 MB. Max. memory is 7.1 GB. [2018-09-14 17:13:19,806 INFO L168 Benchmark]: RCFGBuilder took 4681.20 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.1 GB in the end (delta: 182.5 MB). Peak memory consumption was 182.5 MB. Max. memory is 7.1 GB. [2018-09-14 17:13:19,807 INFO L168 Benchmark]: TraceAbstraction took 228643.64 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.6 GB). Free memory was 2.1 GB in the beginning and 1.2 GB in the end (delta: 848.6 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-09-14 17:13:19,812 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1055.60 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 132.10 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 353.52 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 818.9 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -945.9 MB). Peak memory consumption was 49.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 4681.20 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.1 GB in the end (delta: 182.5 MB). Peak memory consumption was 182.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 228643.64 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.6 GB). Free memory was 2.1 GB in the beginning and 1.2 GB in the end (delta: 848.6 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 168]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 168). Cancelled while BasicCegarLoop was analyzing trace of length 817 with TraceHistMax 8, while TraceCheckSpWp was constructing forward predicates, while XnfDer was eliminating 1 quantified variables from 2 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 228.5s OverallTime, 13 OverallIterations, 8 TraceHistogramMax, 182.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2523 SDtfs, 39680 SDslu, 4661 SDs, 0 SdLazy, 55187 SolverSat, 15705 SolverUnsat, 43 SolverUnknown, 0 SolverNotchecked, 135.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15643 GetRequests, 15181 SyntacticMatches, 41 SemanticMatches, 421 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12012 ImplicationChecksByTransitivity, 35.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=53568occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 8.8s AutomataMinimizationTime, 12 MinimizatonAttempts, 9794 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.5s SsaConstructionTime, 3.7s SatisfiabilityAnalysisTime, 28.0s InterpolantComputationTime, 12014 NumberOfCodeBlocks, 12014 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 19503 ConstructedInterpolants, 3 QuantifiedInterpolants, 38984529 SizeOfPredicates, 14 NumberOfNonLiveVariables, 11813 ConjunctsInSsa, 142 ConjunctsInUnsatCore, 44 InterpolantComputations, 6 PerfectInterpolantSequences, 24526/27412 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem11_label02_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-14_17-13-19-827.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem11_label02_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-14_17-13-19-827.csv Completed graceful shutdown