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/Problem15_label04_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-18 11:52:11,519 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-18 11:52:11,521 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-18 11:52:11,535 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-18 11:52:11,536 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-18 11:52:11,537 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-18 11:52:11,541 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-18 11:52:11,543 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-18 11:52:11,545 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-18 11:52:11,547 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-18 11:52:11,548 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-18 11:52:11,549 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-18 11:52:11,550 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-18 11:52:11,554 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-18 11:52:11,555 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-18 11:52:11,556 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-18 11:52:11,559 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-18 11:52:11,563 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-18 11:52:11,567 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-18 11:52:11,569 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-18 11:52:11,570 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-18 11:52:11,574 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-18 11:52:11,580 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-18 11:52:11,580 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-18 11:52:11,580 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-18 11:52:11,581 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-18 11:52:11,585 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-18 11:52:11,586 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-18 11:52:11,587 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-18 11:52:11,588 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-18 11:52:11,588 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-18 11:52:11,592 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-18 11:52:11,593 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-18 11:52:11,593 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-18 11:52:11,594 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-18 11:52:11,594 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-18 11:52:11,595 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 [2018-09-18 11:52:11,619 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-18 11:52:11,619 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-18 11:52:11,620 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-18 11:52:11,620 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-18 11:52:11,620 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-18 11:52:11,620 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-18 11:52:11,620 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-18 11:52:11,621 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-18 11:52:11,621 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-18 11:52:11,621 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-18 11:52:11,621 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-18 11:52:11,621 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-18 11:52:11,622 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-18 11:52:11,622 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-18 11:52:11,622 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-18 11:52:11,623 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-18 11:52:11,623 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-18 11:52:11,623 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-18 11:52:11,623 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-18 11:52:11,623 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-18 11:52:11,624 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-18 11:52:11,624 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-18 11:52:11,624 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-18 11:52:11,624 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-18 11:52:11,624 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 11:52:11,625 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-18 11:52:11,625 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-18 11:52:11,625 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-18 11:52:11,625 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-18 11:52:11,625 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-18 11:52:11,626 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-18 11:52:11,626 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-18 11:52:11,626 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-18 11:52:11,626 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-18 11:52:11,675 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-18 11:52:11,688 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-18 11:52:11,691 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-18 11:52:11,693 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-18 11:52:11,693 INFO L276 PluginConnector]: CDTParser initialized [2018-09-18 11:52:11,694 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label04_true-unreach-call.c [2018-09-18 11:52:12,044 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de132b7ab/0fa5faf2af554d8d8ab040351de707c6/FLAGb33f64531 [2018-09-18 11:52:12,415 INFO L277 CDTParser]: Found 1 translation units. [2018-09-18 11:52:12,416 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label04_true-unreach-call.c [2018-09-18 11:52:12,435 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de132b7ab/0fa5faf2af554d8d8ab040351de707c6/FLAGb33f64531 [2018-09-18 11:52:12,452 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de132b7ab/0fa5faf2af554d8d8ab040351de707c6 [2018-09-18 11:52:12,464 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-18 11:52:12,467 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-18 11:52:12,468 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-18 11:52:12,469 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-18 11:52:12,476 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-18 11:52:12,478 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 11:52:12" (1/1) ... [2018-09-18 11:52:12,481 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43a96985 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:52:12, skipping insertion in model container [2018-09-18 11:52:12,481 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 11:52:12" (1/1) ... [2018-09-18 11:52:12,495 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-18 11:52:13,360 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 11:52:13,378 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-18 11:52:13,633 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 11:52:13,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:52:13 WrapperNode [2018-09-18 11:52:13,776 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-18 11:52:13,777 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-18 11:52:13,777 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-18 11:52:13,777 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-18 11:52:13,787 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:52:13" (1/1) ... [2018-09-18 11:52:13,854 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:52:13" (1/1) ... [2018-09-18 11:52:14,022 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-18 11:52:14,022 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-18 11:52:14,022 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-18 11:52:14,023 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-18 11:52:14,457 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:52:13" (1/1) ... [2018-09-18 11:52:14,457 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:52:13" (1/1) ... [2018-09-18 11:52:14,476 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:52:13" (1/1) ... [2018-09-18 11:52:14,476 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:52:13" (1/1) ... [2018-09-18 11:52:14,572 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:52:13" (1/1) ... [2018-09-18 11:52:14,607 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:52:13" (1/1) ... [2018-09-18 11:52:14,653 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:52:13" (1/1) ... [2018-09-18 11:52:14,698 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-18 11:52:14,699 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-18 11:52:14,699 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-18 11:52:14,700 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-18 11:52:14,700 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:52:13" (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 [2018-09-18 11:52:14,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-18 11:52:14,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-18 11:52:14,777 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-18 11:52:14,777 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-18 11:52:14,777 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-18 11:52:14,778 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-18 11:52:14,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-18 11:52:14,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-18 11:52:14,778 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-18 11:52:14,778 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-18 11:52:21,253 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-18 11:52:21,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 11:52:21 BoogieIcfgContainer [2018-09-18 11:52:21,254 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-18 11:52:21,256 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-18 11:52:21,256 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-18 11:52:21,259 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-18 11:52:21,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 11:52:12" (1/3) ... [2018-09-18 11:52:21,261 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a6429f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 11:52:21, skipping insertion in model container [2018-09-18 11:52:21,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:52:13" (2/3) ... [2018-09-18 11:52:21,261 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a6429f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 11:52:21, skipping insertion in model container [2018-09-18 11:52:21,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 11:52:21" (3/3) ... [2018-09-18 11:52:21,263 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label04_true-unreach-call.c [2018-09-18 11:52:21,274 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-18 11:52:21,283 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-18 11:52:21,339 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-18 11:52:21,340 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-18 11:52:21,340 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-18 11:52:21,340 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-18 11:52:21,340 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-18 11:52:21,341 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-18 11:52:21,341 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-18 11:52:21,341 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-18 11:52:21,341 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-18 11:52:21,382 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-09-18 11:52:21,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-09-18 11:52:21,390 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:52:21,391 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] [2018-09-18 11:52:21,393 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:52:21,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1812068772, now seen corresponding path program 1 times [2018-09-18 11:52:21,401 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:52:21,451 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:52:21,451 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:52:21,451 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:52:21,451 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:52:21,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:52:21,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:52:21,852 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:52:21,852 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-18 11:52:21,852 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:52:21,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-18 11:52:21,872 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-18 11:52:21,873 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 11:52:21,876 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-09-18 11:52:30,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:52:30,329 INFO L93 Difference]: Finished difference Result 1514 states and 2777 transitions. [2018-09-18 11:52:30,330 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-18 11:52:30,331 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2018-09-18 11:52:30,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:52:30,358 INFO L225 Difference]: With dead ends: 1514 [2018-09-18 11:52:30,358 INFO L226 Difference]: Without dead ends: 1070 [2018-09-18 11:52:30,370 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 [2018-09-18 11:52:30,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1070 states. [2018-09-18 11:52:30,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1070 to 1068. [2018-09-18 11:52:30,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2018-09-18 11:52:30,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1675 transitions. [2018-09-18 11:52:30,507 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1675 transitions. Word has length 38 [2018-09-18 11:52:30,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:52:30,507 INFO L480 AbstractCegarLoop]: Abstraction has 1068 states and 1675 transitions. [2018-09-18 11:52:30,508 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-18 11:52:30,508 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1675 transitions. [2018-09-18 11:52:30,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-09-18 11:52:30,514 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:52:30,514 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, 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] [2018-09-18 11:52:30,514 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:52:30,515 INFO L82 PathProgramCache]: Analyzing trace with hash 1548201903, now seen corresponding path program 1 times [2018-09-18 11:52:30,515 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:52:30,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:52:30,516 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:52:30,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:52:30,517 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:52:30,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:52:30,735 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:52:30,735 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:52:30,736 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-18 11:52:30,736 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:52:30,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-18 11:52:30,739 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-18 11:52:30,739 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 11:52:30,740 INFO L87 Difference]: Start difference. First operand 1068 states and 1675 transitions. Second operand 4 states. [2018-09-18 11:52:36,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:52:36,779 INFO L93 Difference]: Finished difference Result 3988 states and 6459 transitions. [2018-09-18 11:52:36,783 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-18 11:52:36,783 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 108 [2018-09-18 11:52:36,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:52:36,806 INFO L225 Difference]: With dead ends: 3988 [2018-09-18 11:52:36,806 INFO L226 Difference]: Without dead ends: 2926 [2018-09-18 11:52:36,816 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 11:52:36,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2926 states. [2018-09-18 11:52:36,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2926 to 2613. [2018-09-18 11:52:36,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2613 states. [2018-09-18 11:52:36,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2613 states to 2613 states and 3832 transitions. [2018-09-18 11:52:36,911 INFO L78 Accepts]: Start accepts. Automaton has 2613 states and 3832 transitions. Word has length 108 [2018-09-18 11:52:36,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:52:36,912 INFO L480 AbstractCegarLoop]: Abstraction has 2613 states and 3832 transitions. [2018-09-18 11:52:36,912 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-18 11:52:36,912 INFO L276 IsEmpty]: Start isEmpty. Operand 2613 states and 3832 transitions. [2018-09-18 11:52:36,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2018-09-18 11:52:36,927 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:52:36,927 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:52:36,927 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:52:36,928 INFO L82 PathProgramCache]: Analyzing trace with hash 1266247063, now seen corresponding path program 1 times [2018-09-18 11:52:36,928 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:52:36,929 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:52:36,929 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:52:36,929 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:52:36,929 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:52:36,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:52:37,434 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 101 proven. 237 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-09-18 11:52:37,434 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:52:37,435 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 [2018-09-18 11:52:37,446 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:52:37,447 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:52:37,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:52:37,592 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:52:38,379 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 242 proven. 2 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-09-18 11:52:38,379 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:52:38,905 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 103 proven. 241 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 11:52:38,939 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:52:38,939 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 3 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 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:52:38,968 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:52:38,968 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:52:39,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:52:39,196 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:52:39,437 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 270 proven. 2 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2018-09-18 11:52:39,437 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:52:39,870 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 270 proven. 2 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [MP cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (3)] Exception during sending of exit command (exit): Broken pipe [2018-09-18 11:52:39,874 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:52:39,874 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 8, 5, 5] total 21 [2018-09-18 11:52:39,875 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:52:39,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-18 11:52:39,876 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-18 11:52:39,878 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2018-09-18 11:52:39,878 INFO L87 Difference]: Start difference. First operand 2613 states and 3832 transitions. Second operand 11 states. [2018-09-18 11:52:40,572 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-09-18 11:53:19,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:53:19,571 INFO L93 Difference]: Finished difference Result 22006 states and 34086 transitions. [2018-09-18 11:53:19,571 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-09-18 11:53:19,571 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 314 [2018-09-18 11:53:19,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:53:19,711 INFO L225 Difference]: With dead ends: 22006 [2018-09-18 11:53:19,711 INFO L226 Difference]: Without dead ends: 19399 [2018-09-18 11:53:19,782 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1362 GetRequests, 1291 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1319 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=947, Invalid=4023, Unknown=0, NotChecked=0, Total=4970 [2018-09-18 11:53:19,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19399 states. [2018-09-18 11:53:20,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19399 to 19171. [2018-09-18 11:53:20,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19171 states. [2018-09-18 11:53:20,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19171 states to 19171 states and 25204 transitions. [2018-09-18 11:53:20,396 INFO L78 Accepts]: Start accepts. Automaton has 19171 states and 25204 transitions. Word has length 314 [2018-09-18 11:53:20,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:53:20,398 INFO L480 AbstractCegarLoop]: Abstraction has 19171 states and 25204 transitions. [2018-09-18 11:53:20,398 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-18 11:53:20,398 INFO L276 IsEmpty]: Start isEmpty. Operand 19171 states and 25204 transitions. [2018-09-18 11:53:20,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2018-09-18 11:53:20,412 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:53:20,412 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:53:20,413 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:53:20,413 INFO L82 PathProgramCache]: Analyzing trace with hash -760194987, now seen corresponding path program 1 times [2018-09-18 11:53:20,413 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:53:20,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:53:20,414 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:53:20,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:53:20,415 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:53:20,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:53:21,015 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 160 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:53:21,016 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:53:21,134 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 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:53:21,147 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:53:21,147 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:53:21,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:53:21,249 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:53:21,462 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 160 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:53:21,462 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:53:21,752 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 160 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:53:21,772 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:53:21,773 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 5 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 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:53:21,788 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:53:21,788 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:53:21,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:53:22,007 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:53:22,188 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 160 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:53:22,189 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:53:22,453 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 160 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:53:22,456 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:53:22,456 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-18 11:53:22,456 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:53:22,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 11:53:22,458 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 11:53:22,458 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-18 11:53:22,459 INFO L87 Difference]: Start difference. First operand 19171 states and 25204 transitions. Second operand 9 states. [2018-09-18 11:53:33,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:53:33,034 INFO L93 Difference]: Finished difference Result 51705 states and 76685 transitions. [2018-09-18 11:53:33,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-09-18 11:53:33,035 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 339 [2018-09-18 11:53:33,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:53:33,233 INFO L225 Difference]: With dead ends: 51705 [2018-09-18 11:53:33,234 INFO L226 Difference]: Without dead ends: 32540 [2018-09-18 11:53:33,440 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1378 GetRequests, 1352 SyntacticMatches, 6 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=146, Invalid=316, Unknown=0, NotChecked=0, Total=462 [2018-09-18 11:53:33,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32540 states. [2018-09-18 11:53:34,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32540 to 32273. [2018-09-18 11:53:34,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32273 states. [2018-09-18 11:53:34,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32273 states to 32273 states and 42363 transitions. [2018-09-18 11:53:34,556 INFO L78 Accepts]: Start accepts. Automaton has 32273 states and 42363 transitions. Word has length 339 [2018-09-18 11:53:34,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:53:34,557 INFO L480 AbstractCegarLoop]: Abstraction has 32273 states and 42363 transitions. [2018-09-18 11:53:34,557 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 11:53:34,557 INFO L276 IsEmpty]: Start isEmpty. Operand 32273 states and 42363 transitions. [2018-09-18 11:53:34,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2018-09-18 11:53:34,600 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:53:34,601 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, 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, 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, 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] [2018-09-18 11:53:34,601 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:53:34,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1435940887, now seen corresponding path program 1 times [2018-09-18 11:53:34,602 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:53:34,603 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:53:34,603 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:53:34,603 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:53:34,603 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:53:34,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:53:35,502 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2018-09-18 11:53:35,503 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:53:35,503 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-18 11:53:35,503 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:53:35,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 11:53:35,505 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 11:53:35,506 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 11:53:35,506 INFO L87 Difference]: Start difference. First operand 32273 states and 42363 transitions. Second operand 3 states. [2018-09-18 11:53:42,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:53:42,162 INFO L93 Difference]: Finished difference Result 69044 states and 95279 transitions. [2018-09-18 11:53:42,163 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 11:53:42,163 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 480 [2018-09-18 11:53:42,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:53:42,363 INFO L225 Difference]: With dead ends: 69044 [2018-09-18 11:53:42,363 INFO L226 Difference]: Without dead ends: 36777 [2018-09-18 11:53:42,583 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 11:53:42,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36777 states. [2018-09-18 11:53:43,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36777 to 36773. [2018-09-18 11:53:43,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36773 states. [2018-09-18 11:53:43,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36773 states to 36773 states and 48887 transitions. [2018-09-18 11:53:43,488 INFO L78 Accepts]: Start accepts. Automaton has 36773 states and 48887 transitions. Word has length 480 [2018-09-18 11:53:43,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:53:43,489 INFO L480 AbstractCegarLoop]: Abstraction has 36773 states and 48887 transitions. [2018-09-18 11:53:43,489 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 11:53:43,489 INFO L276 IsEmpty]: Start isEmpty. Operand 36773 states and 48887 transitions. [2018-09-18 11:53:43,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 548 [2018-09-18 11:53:43,550 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:53:43,551 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, 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, 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, 1, 1, 1] [2018-09-18 11:53:43,551 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:53:43,551 INFO L82 PathProgramCache]: Analyzing trace with hash -1086962677, now seen corresponding path program 1 times [2018-09-18 11:53:43,552 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:53:43,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:53:43,553 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:53:43,553 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:53:43,553 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:53:43,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:53:44,535 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 410 proven. 2 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2018-09-18 11:53:44,535 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:53:44,535 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:53:44,547 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:53:44,547 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:53:44,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:53:44,724 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:53:45,017 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 410 proven. 2 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2018-09-18 11:53:45,017 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:53:45,399 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 410 proven. 2 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2018-09-18 11:53:45,421 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:53:45,421 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 7 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 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:53:45,436 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:53:45,436 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:53:45,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:53:45,755 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:53:46,303 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 410 proven. 2 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2018-09-18 11:53:46,303 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:53:46,880 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 410 proven. 2 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2018-09-18 11:53:46,882 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:53:46,883 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5] total 7 [2018-09-18 11:53:46,883 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:53:46,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 11:53:46,884 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 11:53:46,885 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-09-18 11:53:46,885 INFO L87 Difference]: Start difference. First operand 36773 states and 48887 transitions. Second operand 6 states. [2018-09-18 11:54:02,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:54:02,174 INFO L93 Difference]: Finished difference Result 95385 states and 130951 transitions. [2018-09-18 11:54:02,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-18 11:54:02,175 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 547 [2018-09-18 11:54:02,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:54:02,350 INFO L225 Difference]: With dead ends: 95385 [2018-09-18 11:54:02,351 INFO L226 Difference]: Without dead ends: 58618 [2018-09-18 11:54:02,531 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2201 GetRequests, 2185 SyntacticMatches, 6 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-09-18 11:54:02,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58618 states. [2018-09-18 11:54:03,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58618 to 56072. [2018-09-18 11:54:03,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56072 states. [2018-09-18 11:54:03,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56072 states to 56072 states and 70801 transitions. [2018-09-18 11:54:03,693 INFO L78 Accepts]: Start accepts. Automaton has 56072 states and 70801 transitions. Word has length 547 [2018-09-18 11:54:03,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:54:03,694 INFO L480 AbstractCegarLoop]: Abstraction has 56072 states and 70801 transitions. [2018-09-18 11:54:03,694 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 11:54:03,695 INFO L276 IsEmpty]: Start isEmpty. Operand 56072 states and 70801 transitions. [2018-09-18 11:54:03,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 582 [2018-09-18 11:54:03,775 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:54:03,776 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, 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, 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, 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, 1] [2018-09-18 11:54:03,776 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:54:03,776 INFO L82 PathProgramCache]: Analyzing trace with hash -423313334, now seen corresponding path program 1 times [2018-09-18 11:54:03,776 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:54:03,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:54:03,777 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:54:03,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:54:03,778 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:54:03,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:54:04,218 INFO L134 CoverageAnalysis]: Checked inductivity of 778 backedges. 140 proven. 2 refuted. 0 times theorem prover too weak. 636 trivial. 0 not checked. [2018-09-18 11:54:04,218 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:54:04,218 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:54:04,229 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:54:04,229 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:54:04,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:54:04,387 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:54:04,582 INFO L134 CoverageAnalysis]: Checked inductivity of 778 backedges. 399 proven. 0 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2018-09-18 11:54:04,582 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:54:05,235 INFO L134 CoverageAnalysis]: Checked inductivity of 778 backedges. 140 proven. 2 refuted. 0 times theorem prover too weak. 636 trivial. 0 not checked. [2018-09-18 11:54:05,256 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 11:54:05,257 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 4 [2018-09-18 11:54:05,257 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:54:05,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 11:54:05,257 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 11:54:05,258 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 11:54:05,258 INFO L87 Difference]: Start difference. First operand 56072 states and 70801 transitions. Second operand 3 states. [2018-09-18 11:54:08,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:54:08,666 INFO L93 Difference]: Finished difference Result 112443 states and 142131 transitions. [2018-09-18 11:54:08,666 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 11:54:08,666 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 581 [2018-09-18 11:54:08,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:54:08,960 INFO L225 Difference]: With dead ends: 112443 [2018-09-18 11:54:08,960 INFO L226 Difference]: Without dead ends: 56377 [2018-09-18 11:54:09,220 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1164 GetRequests, 1162 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 11:54:09,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56377 states. [2018-09-18 11:54:10,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56377 to 56063. [2018-09-18 11:54:10,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56063 states. [2018-09-18 11:54:10,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56063 states to 56063 states and 70733 transitions. [2018-09-18 11:54:10,327 INFO L78 Accepts]: Start accepts. Automaton has 56063 states and 70733 transitions. Word has length 581 [2018-09-18 11:54:10,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:54:10,328 INFO L480 AbstractCegarLoop]: Abstraction has 56063 states and 70733 transitions. [2018-09-18 11:54:10,328 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 11:54:10,329 INFO L276 IsEmpty]: Start isEmpty. Operand 56063 states and 70733 transitions. [2018-09-18 11:54:10,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 591 [2018-09-18 11:54:10,394 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:54:10,395 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, 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, 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, 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] [2018-09-18 11:54:10,395 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:54:10,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1221243772, now seen corresponding path program 1 times [2018-09-18 11:54:10,396 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:54:10,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:54:10,397 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:54:10,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:54:10,397 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:54:10,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:54:11,925 INFO L134 CoverageAnalysis]: Checked inductivity of 738 backedges. 411 proven. 2 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2018-09-18 11:54:11,925 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:54:11,926 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 [2018-09-18 11:54:11,939 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:54:11,939 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:54:12,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:54:12,105 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:54:12,283 INFO L134 CoverageAnalysis]: Checked inductivity of 738 backedges. 411 proven. 2 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2018-09-18 11:54:12,283 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:54:12,566 INFO L134 CoverageAnalysis]: Checked inductivity of 738 backedges. 411 proven. 2 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2018-09-18 11:54:12,589 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:54:12,590 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 [2018-09-18 11:54:12,607 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:54:12,607 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:54:12,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:54:13,003 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:54:13,302 INFO L134 CoverageAnalysis]: Checked inductivity of 738 backedges. 411 proven. 2 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2018-09-18 11:54:13,303 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:54:13,637 INFO L134 CoverageAnalysis]: Checked inductivity of 738 backedges. 411 proven. 2 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2018-09-18 11:54:13,640 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:54:13,640 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-18 11:54:13,641 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:54:13,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 11:54:13,643 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 11:54:13,643 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-18 11:54:13,643 INFO L87 Difference]: Start difference. First operand 56063 states and 70733 transitions. Second operand 9 states. [2018-09-18 11:54:25,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:54:25,614 INFO L93 Difference]: Finished difference Result 117774 states and 153268 transitions. [2018-09-18 11:54:25,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-18 11:54:25,614 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 590 [2018-09-18 11:54:25,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:54:25,911 INFO L225 Difference]: With dead ends: 117774 [2018-09-18 11:54:25,911 INFO L226 Difference]: Without dead ends: 61717 [2018-09-18 11:54:26,240 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2378 GetRequests, 2356 SyntacticMatches, 6 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2018-09-18 11:54:26,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61717 states. [2018-09-18 11:54:27,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61717 to 61286. [2018-09-18 11:54:27,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61286 states. [2018-09-18 11:54:27,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61286 states to 61286 states and 76614 transitions. [2018-09-18 11:54:27,765 INFO L78 Accepts]: Start accepts. Automaton has 61286 states and 76614 transitions. Word has length 590 [2018-09-18 11:54:27,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:54:27,772 INFO L480 AbstractCegarLoop]: Abstraction has 61286 states and 76614 transitions. [2018-09-18 11:54:27,772 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 11:54:27,772 INFO L276 IsEmpty]: Start isEmpty. Operand 61286 states and 76614 transitions. [2018-09-18 11:54:27,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 601 [2018-09-18 11:54:27,839 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:54:27,840 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, 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, 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] [2018-09-18 11:54:27,840 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:54:27,841 INFO L82 PathProgramCache]: Analyzing trace with hash 635381908, now seen corresponding path program 1 times [2018-09-18 11:54:27,841 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:54:27,842 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:54:27,842 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:54:27,842 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:54:27,842 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:54:27,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:54:29,179 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 487 proven. 2 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2018-09-18 11:54:29,180 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:54:29,180 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 [2018-09-18 11:54:29,194 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:54:29,194 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:54:29,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:54:29,362 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:54:29,639 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 487 proven. 2 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2018-09-18 11:54:29,640 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:54:29,906 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 487 proven. 2 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2018-09-18 11:54:29,928 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:54:29,928 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 12 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 12 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:54:29,944 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:54:29,944 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:54:30,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:54:30,315 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:54:30,502 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 487 proven. 2 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2018-09-18 11:54:30,502 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:54:31,095 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 487 proven. 2 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2018-09-18 11:54:31,099 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:54:31,099 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-18 11:54:31,100 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:54:31,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 11:54:31,101 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 11:54:31,101 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-18 11:54:31,102 INFO L87 Difference]: Start difference. First operand 61286 states and 76614 transitions. Second operand 9 states. [2018-09-18 11:54:43,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:54:43,117 INFO L93 Difference]: Finished difference Result 123587 states and 152342 transitions. [2018-09-18 11:54:43,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-18 11:54:43,117 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 600 [2018-09-18 11:54:43,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:54:43,307 INFO L225 Difference]: With dead ends: 123587 [2018-09-18 11:54:43,307 INFO L226 Difference]: Without dead ends: 62307 [2018-09-18 11:54:43,541 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2420 GetRequests, 2397 SyntacticMatches, 6 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2018-09-18 11:54:43,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62307 states. [2018-09-18 11:54:44,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62307 to 61185. [2018-09-18 11:54:44,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61185 states. [2018-09-18 11:54:44,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61185 states to 61185 states and 67982 transitions. [2018-09-18 11:54:44,495 INFO L78 Accepts]: Start accepts. Automaton has 61185 states and 67982 transitions. Word has length 600 [2018-09-18 11:54:44,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:54:44,496 INFO L480 AbstractCegarLoop]: Abstraction has 61185 states and 67982 transitions. [2018-09-18 11:54:44,496 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 11:54:44,496 INFO L276 IsEmpty]: Start isEmpty. Operand 61185 states and 67982 transitions. [2018-09-18 11:54:44,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 603 [2018-09-18 11:54:44,534 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:54:44,535 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, 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, 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, 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] [2018-09-18 11:54:44,535 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:54:44,537 INFO L82 PathProgramCache]: Analyzing trace with hash -376474654, now seen corresponding path program 1 times [2018-09-18 11:54:44,537 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:54:44,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:54:44,538 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:54:44,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:54:44,538 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:54:44,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:54:45,468 INFO L134 CoverageAnalysis]: Checked inductivity of 810 backedges. 393 proven. 100 refuted. 0 times theorem prover too weak. 317 trivial. 0 not checked. [2018-09-18 11:54:45,469 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:54:45,469 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 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:54:45,476 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:54:45,476 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:54:45,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:54:45,648 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:54:46,110 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 8 [2018-09-18 11:54:46,244 INFO L134 CoverageAnalysis]: Checked inductivity of 810 backedges. 654 proven. 2 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2018-09-18 11:54:46,245 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:54:46,794 INFO L134 CoverageAnalysis]: Checked inductivity of 810 backedges. 393 proven. 100 refuted. 0 times theorem prover too weak. 317 trivial. 0 not checked. [2018-09-18 11:54:46,816 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:54:46,816 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 14 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 14 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:54:46,833 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:54:46,834 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:54:47,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:54:47,226 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:54:47,373 INFO L134 CoverageAnalysis]: Checked inductivity of 810 backedges. 654 proven. 2 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2018-09-18 11:54:47,373 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:54:47,896 INFO L134 CoverageAnalysis]: Checked inductivity of 810 backedges. 393 proven. 100 refuted. 0 times theorem prover too weak. 317 trivial. 0 not checked. [2018-09-18 11:54:47,898 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:54:47,899 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6, 6, 6] total 12 [2018-09-18 11:54:47,899 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:54:47,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 11:54:47,900 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 11:54:47,900 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2018-09-18 11:54:47,901 INFO L87 Difference]: Start difference. First operand 61185 states and 67982 transitions. Second operand 9 states. [2018-09-18 11:55:10,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:55:10,817 INFO L93 Difference]: Finished difference Result 158511 states and 195375 transitions. [2018-09-18 11:55:10,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-18 11:55:10,817 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 602 [2018-09-18 11:55:10,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:55:11,298 INFO L225 Difference]: With dead ends: 158511 [2018-09-18 11:55:11,298 INFO L226 Difference]: Without dead ends: 98590 [2018-09-18 11:55:11,553 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2427 GetRequests, 2406 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2018-09-18 11:55:11,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98590 states. [2018-09-18 11:55:13,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98590 to 98331. [2018-09-18 11:55:13,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98331 states. [2018-09-18 11:55:13,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98331 states to 98331 states and 119249 transitions. [2018-09-18 11:55:13,870 INFO L78 Accepts]: Start accepts. Automaton has 98331 states and 119249 transitions. Word has length 602 [2018-09-18 11:55:13,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:55:13,870 INFO L480 AbstractCegarLoop]: Abstraction has 98331 states and 119249 transitions. [2018-09-18 11:55:13,870 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 11:55:13,870 INFO L276 IsEmpty]: Start isEmpty. Operand 98331 states and 119249 transitions. [2018-09-18 11:55:13,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 642 [2018-09-18 11:55:13,950 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:55:13,951 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, 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, 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, 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] [2018-09-18 11:55:13,951 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:55:13,951 INFO L82 PathProgramCache]: Analyzing trace with hash -669482009, now seen corresponding path program 1 times [2018-09-18 11:55:13,951 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:55:13,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:55:13,952 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:55:13,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:55:13,952 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:55:14,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:55:14,657 WARN L178 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 12 [2018-09-18 11:55:15,258 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 124 proven. 387 refuted. 0 times theorem prover too weak. 329 trivial. 0 not checked. [2018-09-18 11:55:15,258 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:55:15,258 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 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:55:15,266 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:55:15,266 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:55:15,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:55:15,455 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:55:16,741 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 430 proven. 0 refuted. 0 times theorem prover too weak. 410 trivial. 0 not checked. [2018-09-18 11:55:16,742 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:55:17,982 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 124 proven. 387 refuted. 0 times theorem prover too weak. 329 trivial. 0 not checked. [2018-09-18 11:55:18,004 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 11:55:18,005 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-09-18 11:55:18,005 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:55:18,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:55:18,006 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:55:18,007 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-09-18 11:55:18,007 INFO L87 Difference]: Start difference. First operand 98331 states and 119249 transitions. Second operand 5 states. [2018-09-18 11:55:30,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:55:30,715 INFO L93 Difference]: Finished difference Result 198248 states and 241257 transitions. [2018-09-18 11:55:30,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 11:55:30,715 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 641 [2018-09-18 11:55:30,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:55:31,113 INFO L225 Difference]: With dead ends: 198248 [2018-09-18 11:55:31,114 INFO L226 Difference]: Without dead ends: 99958 [2018-09-18 11:55:31,432 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1290 GetRequests, 1276 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2018-09-18 11:55:31,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99958 states. [2018-09-18 11:55:32,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99958 to 99920. [2018-09-18 11:55:32,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99920 states. [2018-09-18 11:55:33,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99920 states to 99920 states and 121905 transitions. [2018-09-18 11:55:33,450 INFO L78 Accepts]: Start accepts. Automaton has 99920 states and 121905 transitions. Word has length 641 [2018-09-18 11:55:33,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:55:33,450 INFO L480 AbstractCegarLoop]: Abstraction has 99920 states and 121905 transitions. [2018-09-18 11:55:33,451 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 11:55:33,451 INFO L276 IsEmpty]: Start isEmpty. Operand 99920 states and 121905 transitions. [2018-09-18 11:55:33,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 716 [2018-09-18 11:55:33,499 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:55:33,499 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, 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, 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, 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, 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] [2018-09-18 11:55:33,499 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:55:33,500 INFO L82 PathProgramCache]: Analyzing trace with hash 324969630, now seen corresponding path program 1 times [2018-09-18 11:55:33,500 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:55:33,501 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:55:33,501 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:55:33,501 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:55:33,501 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:55:33,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:55:35,285 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 301 proven. 229 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2018-09-18 11:55:35,285 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:55:35,285 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 [2018-09-18 11:55:35,293 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:55:35,293 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:55:35,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:55:35,489 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:55:35,913 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 693 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2018-09-18 11:55:35,913 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:55:36,304 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 301 proven. 229 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2018-09-18 11:55:36,327 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:55:36,327 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 [2018-09-18 11:55:36,344 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:55:36,344 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:55:36,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:55:36,794 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:55:37,350 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 693 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2018-09-18 11:55:37,350 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:55:37,739 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 301 proven. 229 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2018-09-18 11:55:37,741 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:55:37,742 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-18 11:55:37,742 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:55:37,743 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 11:55:37,743 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 11:55:37,743 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-18 11:55:37,744 INFO L87 Difference]: Start difference. First operand 99920 states and 121905 transitions. Second operand 9 states. [2018-09-18 11:55:48,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:55:48,409 INFO L93 Difference]: Finished difference Result 197436 states and 245635 transitions. [2018-09-18 11:55:48,409 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-09-18 11:55:48,409 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 715 [2018-09-18 11:55:48,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:55:48,963 INFO L225 Difference]: With dead ends: 197436 [2018-09-18 11:55:48,964 INFO L226 Difference]: Without dead ends: 99028 [2018-09-18 11:55:49,368 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2890 GetRequests, 2862 SyntacticMatches, 6 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=172, Invalid=380, Unknown=0, NotChecked=0, Total=552 [2018-09-18 11:55:49,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99028 states. [2018-09-18 11:55:50,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99028 to 98110. [2018-09-18 11:55:50,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98110 states. [2018-09-18 11:55:52,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98110 states to 98110 states and 116957 transitions. [2018-09-18 11:55:52,072 INFO L78 Accepts]: Start accepts. Automaton has 98110 states and 116957 transitions. Word has length 715 [2018-09-18 11:55:52,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:55:52,073 INFO L480 AbstractCegarLoop]: Abstraction has 98110 states and 116957 transitions. [2018-09-18 11:55:52,073 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 11:55:52,073 INFO L276 IsEmpty]: Start isEmpty. Operand 98110 states and 116957 transitions. [2018-09-18 11:55:52,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 728 [2018-09-18 11:55:52,123 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:55:52,124 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, 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, 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, 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, 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] [2018-09-18 11:55:52,124 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:55:52,124 INFO L82 PathProgramCache]: Analyzing trace with hash -1441058242, now seen corresponding path program 1 times [2018-09-18 11:55:52,125 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:55:52,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:55:52,125 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:55:52,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:55:52,126 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:55:52,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:55:53,017 INFO L134 CoverageAnalysis]: Checked inductivity of 887 backedges. 540 proven. 2 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2018-09-18 11:55:53,018 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:55:53,018 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 [2018-09-18 11:55:53,026 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:55:53,026 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:55:53,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:55:53,227 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:55:53,469 INFO L134 CoverageAnalysis]: Checked inductivity of 887 backedges. 540 proven. 2 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2018-09-18 11:55:53,469 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:55:57,314 INFO L134 CoverageAnalysis]: Checked inductivity of 887 backedges. 540 proven. 2 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2018-09-18 11:55:57,335 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:55:57,335 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 19 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 19 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:55:57,353 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:55:57,353 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:55:57,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:55:57,821 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:55:58,091 INFO L134 CoverageAnalysis]: Checked inductivity of 887 backedges. 540 proven. 2 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2018-09-18 11:55:58,091 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:55:58,541 INFO L134 CoverageAnalysis]: Checked inductivity of 887 backedges. 540 proven. 2 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2018-09-18 11:55:58,544 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:55:58,544 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6] total 10 [2018-09-18 11:55:58,545 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:55:58,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-18 11:55:58,546 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-18 11:55:58,546 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2018-09-18 11:55:58,546 INFO L87 Difference]: Start difference. First operand 98110 states and 116957 transitions. Second operand 7 states. Received shutdown request... [2018-09-18 11:56:03,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-18 11:56:03,977 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-18 11:56:03,983 WARN L206 ceAbstractionStarter]: Timeout [2018-09-18 11:56:03,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 11:56:03 BoogieIcfgContainer [2018-09-18 11:56:03,984 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-18 11:56:03,985 INFO L168 Benchmark]: Toolchain (without parser) took 231519.99 ms. Allocated memory was 1.5 GB in the beginning and 4.8 GB in the end (delta: 3.3 GB). Free memory was 1.4 GB in the beginning and 3.8 GB in the end (delta: -2.4 GB). Peak memory consumption was 919.0 MB. Max. memory is 7.1 GB. [2018-09-18 11:56:03,986 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. [2018-09-18 11:56:03,986 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1307.85 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: 126.8 MB). Peak memory consumption was 126.8 MB. Max. memory is 7.1 GB. [2018-09-18 11:56:03,987 INFO L168 Benchmark]: Boogie Procedure Inliner took 245.27 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-09-18 11:56:03,988 INFO L168 Benchmark]: Boogie Preprocessor took 676.50 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 895.0 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 89.6 MB. Max. memory is 7.1 GB. [2018-09-18 11:56:03,989 INFO L168 Benchmark]: RCFGBuilder took 6555.52 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 289.5 MB). Peak memory consumption was 289.5 MB. Max. memory is 7.1 GB. [2018-09-18 11:56:03,990 INFO L168 Benchmark]: TraceAbstraction took 222728.23 ms. Allocated memory was 2.4 GB in the beginning and 4.8 GB in the end (delta: 2.4 GB). Free memory was 2.0 GB in the beginning and 3.8 GB in the end (delta: -1.8 GB). Peak memory consumption was 618.4 MB. Max. memory is 7.1 GB. [2018-09-18 11:56:03,994 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 1307.85 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: 126.8 MB). Peak memory consumption was 126.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 245.27 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 676.50 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 895.0 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 89.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6555.52 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 289.5 MB). Peak memory consumption was 289.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 222728.23 ms. Allocated memory was 2.4 GB in the beginning and 4.8 GB in the end (delta: 2.4 GB). Free memory was 2.0 GB in the beginning and 3.8 GB in the end (delta: -1.8 GB). Peak memory consumption was 618.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 100]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 100). Cancelled while BasicCegarLoop was constructing difference of abstraction (98110states) and FLOYD_HOARE automaton (currently 10 states, 7 states before enhancement), while ReachableStatesComputation was computing reachable states (14737 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 222.6s OverallTime, 13 OverallIterations, 5 TraceHistogramMax, 171.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3070 SDtfs, 25049 SDslu, 5062 SDs, 0 SdLazy, 55196 SolverSat, 9639 SolverUnsat, 7 SolverUnknown, 0 SolverNotchecked, 137.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20448 GetRequests, 20202 SyntacticMatches, 44 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1801 ImplicationChecksByTransitivity, 8.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=99920occurred in iteration=11, 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: 14.6s AutomataMinimizationTime, 12 MinimizatonAttempts, 6442 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.6s SsaConstructionTime, 4.6s SatisfiabilityAnalysisTime, 24.8s InterpolantComputationTime, 16372 NumberOfCodeBlocks, 16372 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 26413 ConstructedInterpolants, 0 QuantifiedInterpolants, 38444126 SizeOfPredicates, 11 NumberOfNonLiveVariables, 14508 ConjunctsInSsa, 111 ConjunctsInUnsatCore, 49 InterpolantComputations, 5 PerfectInterpolantSequences, 29247/31554 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/Problem15_label04_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-18_11-56-04-007.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem15_label04_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-18_11-56-04-007.csv Completed graceful shutdown