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/Problem17_label28_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-18 12:14:00,536 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-18 12:14:00,538 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-18 12:14:00,551 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-18 12:14:00,551 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-18 12:14:00,556 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-18 12:14:00,558 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-18 12:14:00,560 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-18 12:14:00,563 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-18 12:14:00,564 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-18 12:14:00,567 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-18 12:14:00,567 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-18 12:14:00,569 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-18 12:14:00,570 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-18 12:14:00,573 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-18 12:14:00,574 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-18 12:14:00,575 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-18 12:14:00,577 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-18 12:14:00,579 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-18 12:14:00,580 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-18 12:14:00,581 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-18 12:14:00,582 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-18 12:14:00,585 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-18 12:14:00,586 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-18 12:14:00,586 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-18 12:14:00,587 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-18 12:14:00,588 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-18 12:14:00,589 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-18 12:14:00,589 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-18 12:14:00,595 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-18 12:14:00,595 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-18 12:14:00,596 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-09-18 12:14:00,599 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 12:14:00,628 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-18 12:14:00,629 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-18 12:14:00,630 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-18 12:14:00,630 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-18 12:14:00,630 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-18 12:14:00,633 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-18 12:14:00,633 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-18 12:14:00,634 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-18 12:14:00,634 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-18 12:14:00,634 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-18 12:14:00,634 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-18 12:14:00,634 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-18 12:14:00,635 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-18 12:14:00,636 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-18 12:14:00,636 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-18 12:14:00,636 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-18 12:14:00,637 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-18 12:14:00,637 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-18 12:14:00,637 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-18 12:14:00,637 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-18 12:14:00,637 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-18 12:14:00,638 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-18 12:14:00,638 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-18 12:14:00,638 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-18 12:14:00,638 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 12:14:00,638 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-18 12:14:00,639 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-18 12:14:00,639 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-18 12:14:00,639 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-18 12:14:00,639 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-18 12:14:00,639 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-18 12:14:00,640 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-18 12:14:00,640 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-18 12:14:00,640 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-18 12:14:00,695 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-18 12:14:00,712 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-18 12:14:00,718 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-18 12:14:00,720 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-18 12:14:00,720 INFO L276 PluginConnector]: CDTParser initialized [2018-09-18 12:14:00,721 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label28_true-unreach-call.c [2018-09-18 12:14:01,079 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db3d3da91/ff0a8f3831594217875efa30ec97b6a6/FLAGa4af6c8c5 [2018-09-18 12:14:01,483 INFO L277 CDTParser]: Found 1 translation units. [2018-09-18 12:14:01,484 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label28_true-unreach-call.c [2018-09-18 12:14:01,506 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db3d3da91/ff0a8f3831594217875efa30ec97b6a6/FLAGa4af6c8c5 [2018-09-18 12:14:01,521 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db3d3da91/ff0a8f3831594217875efa30ec97b6a6 [2018-09-18 12:14:01,533 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-18 12:14:01,536 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-18 12:14:01,537 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-18 12:14:01,537 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-18 12:14:01,545 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-18 12:14:01,546 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 12:14:01" (1/1) ... [2018-09-18 12:14:01,550 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@359f2bac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:14:01, skipping insertion in model container [2018-09-18 12:14:01,550 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 12:14:01" (1/1) ... [2018-09-18 12:14:01,563 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-18 12:14:02,585 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 12:14:02,602 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-18 12:14:03,004 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 12:14:03,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:14:03 WrapperNode [2018-09-18 12:14:03,228 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-18 12:14:03,230 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-18 12:14:03,230 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-18 12:14:03,230 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-18 12:14:03,240 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:14:03" (1/1) ... [2018-09-18 12:14:03,322 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:14:03" (1/1) ... [2018-09-18 12:14:03,571 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-18 12:14:03,571 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-18 12:14:03,571 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-18 12:14:03,571 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-18 12:14:04,152 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:14:03" (1/1) ... [2018-09-18 12:14:04,152 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:14:03" (1/1) ... [2018-09-18 12:14:04,209 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:14:03" (1/1) ... [2018-09-18 12:14:04,209 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:14:03" (1/1) ... [2018-09-18 12:14:04,313 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:14:03" (1/1) ... [2018-09-18 12:14:04,363 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:14:03" (1/1) ... [2018-09-18 12:14:04,420 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:14:03" (1/1) ... [2018-09-18 12:14:04,483 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-18 12:14:04,483 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-18 12:14:04,484 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-18 12:14:04,484 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-18 12:14:04,485 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:14:03" (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 12:14:04,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-18 12:14:04,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-18 12:14:04,559 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-18 12:14:04,559 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-18 12:14:04,559 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-18 12:14:04,559 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-18 12:14:04,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-18 12:14:04,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-18 12:14:04,560 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-18 12:14:04,560 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-18 12:14:16,341 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-18 12:14:16,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 12:14:16 BoogieIcfgContainer [2018-09-18 12:14:16,342 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-18 12:14:16,343 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-18 12:14:16,344 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-18 12:14:16,348 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-18 12:14:16,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 12:14:01" (1/3) ... [2018-09-18 12:14:16,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@105d4fc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 12:14:16, skipping insertion in model container [2018-09-18 12:14:16,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:14:03" (2/3) ... [2018-09-18 12:14:16,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@105d4fc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 12:14:16, skipping insertion in model container [2018-09-18 12:14:16,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 12:14:16" (3/3) ... [2018-09-18 12:14:16,352 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label28_true-unreach-call.c [2018-09-18 12:14:16,363 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-18 12:14:16,378 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-18 12:14:16,458 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-18 12:14:16,459 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-18 12:14:16,459 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-18 12:14:16,459 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-18 12:14:16,459 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-18 12:14:16,459 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-18 12:14:16,459 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-18 12:14:16,460 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-18 12:14:16,460 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-18 12:14:16,515 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-09-18 12:14:16,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-09-18 12:14:16,528 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:14:16,530 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:14:16,531 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:14:16,537 INFO L82 PathProgramCache]: Analyzing trace with hash 1044962550, now seen corresponding path program 1 times [2018-09-18 12:14:16,540 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:14:16,602 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:14:16,602 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:14:16,602 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:14:16,602 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:14:16,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:14:17,147 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 12:14:17,149 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 12:14:17,149 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-18 12:14:17,150 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:14:17,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-18 12:14:17,171 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-18 12:14:17,172 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 12:14:17,174 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-09-18 12:14:27,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:14:27,524 INFO L93 Difference]: Finished difference Result 2133 states and 3959 transitions. [2018-09-18 12:14:27,524 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-18 12:14:27,525 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2018-09-18 12:14:27,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:14:27,556 INFO L225 Difference]: With dead ends: 2133 [2018-09-18 12:14:27,556 INFO L226 Difference]: Without dead ends: 1523 [2018-09-18 12:14:27,569 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 12:14:27,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1523 states. [2018-09-18 12:14:27,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1523 to 1516. [2018-09-18 12:14:27,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1516 states. [2018-09-18 12:14:27,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1516 states to 1516 states and 2287 transitions. [2018-09-18 12:14:27,720 INFO L78 Accepts]: Start accepts. Automaton has 1516 states and 2287 transitions. Word has length 71 [2018-09-18 12:14:27,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:14:27,721 INFO L480 AbstractCegarLoop]: Abstraction has 1516 states and 2287 transitions. [2018-09-18 12:14:27,721 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-18 12:14:27,721 INFO L276 IsEmpty]: Start isEmpty. Operand 1516 states and 2287 transitions. [2018-09-18 12:14:27,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-09-18 12:14:27,740 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:14:27,740 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 12:14:27,741 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:14:27,741 INFO L82 PathProgramCache]: Analyzing trace with hash 497854657, now seen corresponding path program 1 times [2018-09-18 12:14:27,741 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:14:27,742 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:14:27,744 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:14:27,744 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:14:27,744 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:14:27,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:14:28,190 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:14:28,190 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:14:28,190 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 12:14:28,207 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:14:28,207 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:14:28,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:14:28,318 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:14:55,162 WARN L178 SmtUtils]: Spent 24.24 s on a formula simplification. DAG size of input: 135 DAG size of output: 98 [2018-09-18 12:15:15,544 WARN L178 SmtUtils]: Spent 16.11 s on a formula simplification. DAG size of input: 98 DAG size of output: 73 [2018-09-18 12:15:16,356 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 4 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:15:16,357 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:15:20,886 WARN L178 SmtUtils]: Spent 2.03 s on a formula simplification. DAG size of input: 133 DAG size of output: 16 [2018-09-18 12:15:21,062 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 28 [2018-09-18 12:15:23,585 WARN L178 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 26 [2018-09-18 12:15:24,030 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:15:24,053 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 12:15:24,054 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 15 [2018-09-18 12:15:24,054 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:15:24,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 12:15:24,055 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 12:15:24,056 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=161, Unknown=4, NotChecked=0, Total=210 [2018-09-18 12:15:24,056 INFO L87 Difference]: Start difference. First operand 1516 states and 2287 transitions. Second operand 6 states. [2018-09-18 12:16:19,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:16:19,219 INFO L93 Difference]: Finished difference Result 5732 states and 8895 transitions. [2018-09-18 12:16:19,221 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-18 12:16:19,222 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 146 [2018-09-18 12:16:19,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:16:19,257 INFO L225 Difference]: With dead ends: 5732 [2018-09-18 12:16:19,257 INFO L226 Difference]: Without dead ends: 4222 [2018-09-18 12:16:19,269 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 286 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 54.3s TimeCoverageRelationStatistics Valid=45, Invalid=161, Unknown=4, NotChecked=0, Total=210 [2018-09-18 12:16:19,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4222 states. [2018-09-18 12:16:19,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4222 to 4192. [2018-09-18 12:16:19,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4192 states. [2018-09-18 12:16:19,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4192 states to 4192 states and 6150 transitions. [2018-09-18 12:16:19,421 INFO L78 Accepts]: Start accepts. Automaton has 4192 states and 6150 transitions. Word has length 146 [2018-09-18 12:16:19,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:16:19,422 INFO L480 AbstractCegarLoop]: Abstraction has 4192 states and 6150 transitions. [2018-09-18 12:16:19,422 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 12:16:19,422 INFO L276 IsEmpty]: Start isEmpty. Operand 4192 states and 6150 transitions. [2018-09-18 12:16:19,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2018-09-18 12:16:19,431 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:16:19,431 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 12:16:19,432 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:16:19,432 INFO L82 PathProgramCache]: Analyzing trace with hash -977557274, now seen corresponding path program 1 times [2018-09-18 12:16:19,433 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:16:19,434 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:16:19,434 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:16:19,434 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:16:19,434 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:16:19,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:16:19,705 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:16:19,705 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 12:16:19,705 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 12:16:19,705 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:16:19,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 12:16:19,707 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 12:16:19,707 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 12:16:19,707 INFO L87 Difference]: Start difference. First operand 4192 states and 6150 transitions. Second operand 6 states. [2018-09-18 12:16:26,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:16:26,246 INFO L93 Difference]: Finished difference Result 12518 states and 19258 transitions. [2018-09-18 12:16:26,250 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 12:16:26,251 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 187 [2018-09-18 12:16:26,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:16:26,310 INFO L225 Difference]: With dead ends: 12518 [2018-09-18 12:16:26,311 INFO L226 Difference]: Without dead ends: 8332 [2018-09-18 12:16:26,335 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-18 12:16:26,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8332 states. [2018-09-18 12:16:26,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8332 to 8268. [2018-09-18 12:16:26,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8268 states. [2018-09-18 12:16:26,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8268 states to 8268 states and 11706 transitions. [2018-09-18 12:16:26,598 INFO L78 Accepts]: Start accepts. Automaton has 8268 states and 11706 transitions. Word has length 187 [2018-09-18 12:16:26,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:16:26,599 INFO L480 AbstractCegarLoop]: Abstraction has 8268 states and 11706 transitions. [2018-09-18 12:16:26,599 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 12:16:26,599 INFO L276 IsEmpty]: Start isEmpty. Operand 8268 states and 11706 transitions. [2018-09-18 12:16:26,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2018-09-18 12:16:26,607 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:16:26,608 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 12:16:26,608 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:16:26,608 INFO L82 PathProgramCache]: Analyzing trace with hash -1079988822, now seen corresponding path program 1 times [2018-09-18 12:16:26,608 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:16:26,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:16:26,609 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:16:26,610 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:16:26,610 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:16:26,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:16:26,936 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:16:26,936 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 12:16:26,936 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-09-18 12:16:26,936 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:16:26,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-18 12:16:26,937 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-18 12:16:26,937 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-09-18 12:16:26,938 INFO L87 Difference]: Start difference. First operand 8268 states and 11706 transitions. Second operand 7 states. [2018-09-18 12:16:51,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:16:51,024 INFO L93 Difference]: Finished difference Result 24682 states and 40079 transitions. [2018-09-18 12:16:51,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-18 12:16:51,025 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 205 [2018-09-18 12:16:51,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:16:51,182 INFO L225 Difference]: With dead ends: 24682 [2018-09-18 12:16:51,182 INFO L226 Difference]: Without dead ends: 16420 [2018-09-18 12:16:51,257 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-09-18 12:16:51,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16420 states. [2018-09-18 12:16:51,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16420 to 16175. [2018-09-18 12:16:51,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16175 states. [2018-09-18 12:16:51,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16175 states to 16175 states and 24360 transitions. [2018-09-18 12:16:51,810 INFO L78 Accepts]: Start accepts. Automaton has 16175 states and 24360 transitions. Word has length 205 [2018-09-18 12:16:51,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:16:51,811 INFO L480 AbstractCegarLoop]: Abstraction has 16175 states and 24360 transitions. [2018-09-18 12:16:51,811 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-18 12:16:51,811 INFO L276 IsEmpty]: Start isEmpty. Operand 16175 states and 24360 transitions. [2018-09-18 12:16:51,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2018-09-18 12:16:51,826 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:16:51,826 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-09-18 12:16:51,826 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:16:51,827 INFO L82 PathProgramCache]: Analyzing trace with hash 327547341, now seen corresponding path program 1 times [2018-09-18 12:16:51,827 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:16:51,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:16:51,828 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:16:51,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:16:51,828 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:16:51,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:16:52,153 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 12:16:52,766 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 129 proven. 7 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-09-18 12:16:52,767 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:16:52,767 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-09-18 12:16:52,782 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:16:52,783 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:16:52,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:16:52,877 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:16:52,971 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 201 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:16:52,971 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:16:53,250 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 201 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:16:53,285 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:16:53,286 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 12:16:53,319 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:16:53,319 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:16:53,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:16:53,504 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:16:53,829 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 129 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-09-18 12:16:53,829 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:16:54,065 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-09-18 12:16:54,069 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2018-09-18 12:16:54,069 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5, 5, 5] total 12 [2018-09-18 12:16:54,070 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:16:54,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 12:16:54,071 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 12:16:54,071 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-18 12:16:54,071 INFO L87 Difference]: Start difference. First operand 16175 states and 24360 transitions. Second operand 5 states. [2018-09-18 12:16:59,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:16:59,887 INFO L93 Difference]: Finished difference Result 37714 states and 57832 transitions. [2018-09-18 12:16:59,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-18 12:16:59,898 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 229 [2018-09-18 12:16:59,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:16:59,989 INFO L225 Difference]: With dead ends: 37714 [2018-09-18 12:16:59,989 INFO L226 Difference]: Without dead ends: 21545 [2018-09-18 12:17:00,043 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 924 GetRequests, 906 SyntacticMatches, 7 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-09-18 12:17:00,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21545 states. [2018-09-18 12:17:00,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21545 to 21536. [2018-09-18 12:17:00,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21536 states. [2018-09-18 12:17:00,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21536 states to 21536 states and 28435 transitions. [2018-09-18 12:17:00,856 INFO L78 Accepts]: Start accepts. Automaton has 21536 states and 28435 transitions. Word has length 229 [2018-09-18 12:17:00,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:17:00,856 INFO L480 AbstractCegarLoop]: Abstraction has 21536 states and 28435 transitions. [2018-09-18 12:17:00,856 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 12:17:00,857 INFO L276 IsEmpty]: Start isEmpty. Operand 21536 states and 28435 transitions. [2018-09-18 12:17:00,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-09-18 12:17:00,869 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:17:00,870 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:17:00,870 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:17:00,870 INFO L82 PathProgramCache]: Analyzing trace with hash 756448335, now seen corresponding path program 1 times [2018-09-18 12:17:00,871 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:17:00,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:17:00,873 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:17:00,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:17:00,873 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:17:00,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:17:01,119 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-09-18 12:17:01,119 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 12:17:01,119 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-18 12:17:01,119 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:17:01,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 12:17:01,120 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 12:17:01,121 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 12:17:01,121 INFO L87 Difference]: Start difference. First operand 21536 states and 28435 transitions. Second operand 3 states. [2018-09-18 12:17:07,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:17:07,358 INFO L93 Difference]: Finished difference Result 50197 states and 68654 transitions. [2018-09-18 12:17:07,358 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 12:17:07,359 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 246 [2018-09-18 12:17:07,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:17:07,460 INFO L225 Difference]: With dead ends: 50197 [2018-09-18 12:17:07,461 INFO L226 Difference]: Without dead ends: 28667 [2018-09-18 12:17:07,549 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 12:17:07,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28667 states. [2018-09-18 12:17:08,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28667 to 28665. [2018-09-18 12:17:08,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28665 states. [2018-09-18 12:17:08,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28665 states to 28665 states and 37297 transitions. [2018-09-18 12:17:08,113 INFO L78 Accepts]: Start accepts. Automaton has 28665 states and 37297 transitions. Word has length 246 [2018-09-18 12:17:08,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:17:08,114 INFO L480 AbstractCegarLoop]: Abstraction has 28665 states and 37297 transitions. [2018-09-18 12:17:08,114 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 12:17:08,114 INFO L276 IsEmpty]: Start isEmpty. Operand 28665 states and 37297 transitions. [2018-09-18 12:17:08,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2018-09-18 12:17:08,132 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:17:08,132 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-09-18 12:17:08,133 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:17:08,133 INFO L82 PathProgramCache]: Analyzing trace with hash -2034483145, now seen corresponding path program 1 times [2018-09-18 12:17:08,133 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:17:08,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:17:08,134 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:17:08,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:17:08,134 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:17:08,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:17:08,426 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 12:17:08,529 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 137 proven. 72 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-09-18 12:17:08,530 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:17:08,530 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:17:08,537 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:17:08,537 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:17:08,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:17:09,005 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:17:09,077 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-09-18 12:17:09,077 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:17:09,263 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-09-18 12:17:09,285 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-18 12:17:09,286 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-09-18 12:17:09,286 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:17:09,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 12:17:09,287 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 12:17:09,287 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-09-18 12:17:09,287 INFO L87 Difference]: Start difference. First operand 28665 states and 37297 transitions. Second operand 3 states. [2018-09-18 12:17:13,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:17:13,132 INFO L93 Difference]: Finished difference Result 58190 states and 75762 transitions. [2018-09-18 12:17:13,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 12:17:13,140 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 275 [2018-09-18 12:17:13,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:17:13,235 INFO L225 Difference]: With dead ends: 58190 [2018-09-18 12:17:13,235 INFO L226 Difference]: Without dead ends: 29531 [2018-09-18 12:17:13,337 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 561 GetRequests, 550 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-09-18 12:17:13,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29531 states. [2018-09-18 12:17:13,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29531 to 29097. [2018-09-18 12:17:13,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29097 states. [2018-09-18 12:17:13,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29097 states to 29097 states and 36199 transitions. [2018-09-18 12:17:13,881 INFO L78 Accepts]: Start accepts. Automaton has 29097 states and 36199 transitions. Word has length 275 [2018-09-18 12:17:13,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:17:13,882 INFO L480 AbstractCegarLoop]: Abstraction has 29097 states and 36199 transitions. [2018-09-18 12:17:13,882 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 12:17:13,882 INFO L276 IsEmpty]: Start isEmpty. Operand 29097 states and 36199 transitions. [2018-09-18 12:17:13,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2018-09-18 12:17:13,897 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:17:13,898 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-09-18 12:17:13,898 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:17:13,898 INFO L82 PathProgramCache]: Analyzing trace with hash 179750769, now seen corresponding path program 1 times [2018-09-18 12:17:13,898 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:17:13,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:17:13,899 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:17:13,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:17:13,899 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:17:13,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:17:14,258 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-09-18 12:17:14,259 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 12:17:14,259 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-18 12:17:14,259 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:17:14,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-18 12:17:14,260 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-18 12:17:14,260 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 12:17:14,260 INFO L87 Difference]: Start difference. First operand 29097 states and 36199 transitions. Second operand 4 states. [2018-09-18 12:17:23,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:17:23,820 INFO L93 Difference]: Finished difference Result 92011 states and 117708 transitions. [2018-09-18 12:17:23,820 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-18 12:17:23,820 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 297 [2018-09-18 12:17:23,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:17:24,025 INFO L225 Difference]: With dead ends: 92011 [2018-09-18 12:17:24,025 INFO L226 Difference]: Without dead ends: 62920 [2018-09-18 12:17:24,125 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 12:17:24,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62920 states. [2018-09-18 12:17:25,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62920 to 61156. [2018-09-18 12:17:25,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61156 states. [2018-09-18 12:17:25,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61156 states to 61156 states and 74838 transitions. [2018-09-18 12:17:25,221 INFO L78 Accepts]: Start accepts. Automaton has 61156 states and 74838 transitions. Word has length 297 [2018-09-18 12:17:25,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:17:25,222 INFO L480 AbstractCegarLoop]: Abstraction has 61156 states and 74838 transitions. [2018-09-18 12:17:25,222 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-18 12:17:25,222 INFO L276 IsEmpty]: Start isEmpty. Operand 61156 states and 74838 transitions. [2018-09-18 12:17:25,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2018-09-18 12:17:25,243 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:17:25,243 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-09-18 12:17:25,244 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:17:25,244 INFO L82 PathProgramCache]: Analyzing trace with hash -850342932, now seen corresponding path program 1 times [2018-09-18 12:17:25,244 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:17:25,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:17:25,245 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:17:25,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:17:25,245 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:17:25,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:17:25,951 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2018-09-18 12:17:25,951 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 12:17:25,951 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-18 12:17:25,951 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:17:25,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-18 12:17:25,952 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-18 12:17:25,953 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 12:17:25,953 INFO L87 Difference]: Start difference. First operand 61156 states and 74838 transitions. Second operand 4 states. [2018-09-18 12:17:34,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:17:34,185 INFO L93 Difference]: Finished difference Result 135408 states and 166183 transitions. [2018-09-18 12:17:34,185 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-18 12:17:34,185 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 323 [2018-09-18 12:17:34,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:17:34,430 INFO L225 Difference]: With dead ends: 135408 [2018-09-18 12:17:34,430 INFO L226 Difference]: Without dead ends: 74258 [2018-09-18 12:17:34,570 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 12:17:34,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74258 states. [2018-09-18 12:17:36,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74258 to 74226. [2018-09-18 12:17:36,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74226 states. [2018-09-18 12:17:36,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74226 states to 74226 states and 89358 transitions. [2018-09-18 12:17:36,473 INFO L78 Accepts]: Start accepts. Automaton has 74226 states and 89358 transitions. Word has length 323 [2018-09-18 12:17:36,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:17:36,473 INFO L480 AbstractCegarLoop]: Abstraction has 74226 states and 89358 transitions. [2018-09-18 12:17:36,474 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-18 12:17:36,474 INFO L276 IsEmpty]: Start isEmpty. Operand 74226 states and 89358 transitions. [2018-09-18 12:17:36,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2018-09-18 12:17:36,522 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:17:36,523 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:17:36,524 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:17:36,524 INFO L82 PathProgramCache]: Analyzing trace with hash -11005462, now seen corresponding path program 1 times [2018-09-18 12:17:36,524 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:17:36,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:17:36,525 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:17:36,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:17:36,525 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:17:36,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:17:37,179 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 4 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:17:37,179 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:17:37,179 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 12:17:37,189 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:17:37,189 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:17:37,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:17:37,316 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:17:37,640 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 4 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:17:37,641 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:17:38,022 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:17:38,045 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 12:17:38,045 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 15 [2018-09-18 12:17:38,045 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:17:38,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 12:17:38,046 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 12:17:38,046 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2018-09-18 12:17:38,047 INFO L87 Difference]: Start difference. First operand 74226 states and 89358 transitions. Second operand 6 states. [2018-09-18 12:17:50,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:17:50,470 INFO L93 Difference]: Finished difference Result 165163 states and 199713 transitions. [2018-09-18 12:17:50,470 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-18 12:17:50,470 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 419 [2018-09-18 12:17:50,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:17:50,813 INFO L225 Difference]: With dead ends: 165163 [2018-09-18 12:17:50,813 INFO L226 Difference]: Without dead ends: 91814 [2018-09-18 12:17:50,949 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 848 GetRequests, 833 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2018-09-18 12:17:51,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91814 states. [2018-09-18 12:17:52,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91814 to 83963. [2018-09-18 12:17:52,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83963 states. [2018-09-18 12:17:53,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83963 states to 83963 states and 101313 transitions. [2018-09-18 12:17:53,093 INFO L78 Accepts]: Start accepts. Automaton has 83963 states and 101313 transitions. Word has length 419 [2018-09-18 12:17:53,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:17:53,094 INFO L480 AbstractCegarLoop]: Abstraction has 83963 states and 101313 transitions. [2018-09-18 12:17:53,094 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 12:17:53,094 INFO L276 IsEmpty]: Start isEmpty. Operand 83963 states and 101313 transitions. [2018-09-18 12:17:53,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 664 [2018-09-18 12:17:53,191 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:17:53,192 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-09-18 12:17:53,192 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:17:53,192 INFO L82 PathProgramCache]: Analyzing trace with hash -1158656570, now seen corresponding path program 1 times [2018-09-18 12:17:53,192 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:17:53,193 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:17:53,193 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:17:53,193 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:17:53,194 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:17:53,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:17:53,804 INFO L134 CoverageAnalysis]: Checked inductivity of 701 backedges. 200 proven. 2 refuted. 0 times theorem prover too weak. 499 trivial. 0 not checked. [2018-09-18 12:17:53,804 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:17:53,804 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:17:53,817 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:17:53,817 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:17:54,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:17:54,017 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:17:54,309 INFO L134 CoverageAnalysis]: Checked inductivity of 701 backedges. 473 proven. 0 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2018-09-18 12:17:54,310 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:17:54,833 INFO L134 CoverageAnalysis]: Checked inductivity of 701 backedges. 200 proven. 2 refuted. 0 times theorem prover too weak. 499 trivial. 0 not checked. [2018-09-18 12:17:54,867 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 12:17:54,867 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 4 [2018-09-18 12:17:54,868 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:17:54,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 12:17:54,869 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 12:17:54,869 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 12:17:54,869 INFO L87 Difference]: Start difference. First operand 83963 states and 101313 transitions. Second operand 3 states. [2018-09-18 12:18:01,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:18:01,246 INFO L93 Difference]: Finished difference Result 180588 states and 219142 transitions. [2018-09-18 12:18:01,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 12:18:01,247 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 663 [2018-09-18 12:18:01,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:18:01,580 INFO L225 Difference]: With dead ends: 180588 [2018-09-18 12:18:01,580 INFO L226 Difference]: Without dead ends: 97502 [2018-09-18 12:18:01,725 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1328 GetRequests, 1326 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 12:18:01,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97502 states. [2018-09-18 12:18:03,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97502 to 92265. [2018-09-18 12:18:03,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92265 states. [2018-09-18 12:18:03,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92265 states to 92265 states and 111704 transitions. [2018-09-18 12:18:03,189 INFO L78 Accepts]: Start accepts. Automaton has 92265 states and 111704 transitions. Word has length 663 [2018-09-18 12:18:03,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:18:03,190 INFO L480 AbstractCegarLoop]: Abstraction has 92265 states and 111704 transitions. [2018-09-18 12:18:03,190 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 12:18:03,190 INFO L276 IsEmpty]: Start isEmpty. Operand 92265 states and 111704 transitions. [2018-09-18 12:18:03,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1014 [2018-09-18 12:18:03,429 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:18:03,430 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2018-09-18 12:18:03,430 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:18:03,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1575706465, now seen corresponding path program 1 times [2018-09-18 12:18:03,431 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:18:03,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:18:03,432 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:18:03,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:18:03,432 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:18:03,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-09-18 12:18:05,980 INFO L134 CoverageAnalysis]: Checked inductivity of 1226 backedges. 743 proven. 2 refuted. 0 times theorem prover too weak. 481 trivial. 0 not checked. [2018-09-18 12:18:05,981 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:18:05,981 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 12:18:05,990 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:18:05,991 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:18:06,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:18:06,281 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:18:06,298 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-09-18 12:18:06,500 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:18:06,500 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-18 12:18:06,505 WARN L206 ceAbstractionStarter]: Timeout [2018-09-18 12:18:06,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 12:18:06 BoogieIcfgContainer [2018-09-18 12:18:06,508 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-18 12:18:06,512 INFO L168 Benchmark]: Toolchain (without parser) took 244978.92 ms. Allocated memory was 1.5 GB in the beginning and 3.7 GB in the end (delta: 2.2 GB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 69.5 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-09-18 12:18:06,513 INFO L168 Benchmark]: CDTParser took 0.23 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 12:18:06,514 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1691.67 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 179.7 MB). Peak memory consumption was 179.7 MB. Max. memory is 7.1 GB. [2018-09-18 12:18:06,516 INFO L168 Benchmark]: Boogie Procedure Inliner took 341.26 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-09-18 12:18:06,517 INFO L168 Benchmark]: Boogie Preprocessor took 911.95 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 941.1 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 123.5 MB. Max. memory is 7.1 GB. [2018-09-18 12:18:06,520 INFO L168 Benchmark]: RCFGBuilder took 11859.07 ms. Allocated memory is still 2.5 GB. Free memory was 2.3 GB in the beginning and 1.9 GB in the end (delta: 461.5 MB). Peak memory consumption was 461.5 MB. Max. memory is 7.1 GB. [2018-09-18 12:18:06,521 INFO L168 Benchmark]: TraceAbstraction took 230164.78 ms. Allocated memory was 2.5 GB in the beginning and 3.7 GB in the end (delta: 1.3 GB). Free memory was 1.9 GB in the beginning and 1.3 GB in the end (delta: 540.3 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-09-18 12:18:06,534 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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 1691.67 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 179.7 MB). Peak memory consumption was 179.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 341.26 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 911.95 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 941.1 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 123.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11859.07 ms. Allocated memory is still 2.5 GB. Free memory was 2.3 GB in the beginning and 1.9 GB in the end (delta: 461.5 MB). Peak memory consumption was 461.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 230164.78 ms. Allocated memory was 2.5 GB in the beginning and 3.7 GB in the end (delta: 1.3 GB). Free memory was 1.9 GB in the beginning and 1.3 GB in the end (delta: 540.3 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 200]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 200). Cancelled while BasicCegarLoop was analyzing trace of length 1014 with TraceHistMax 5, while TraceCheckSpWp was constructing forward predicates, while XnfDer was eliminating 1 quantified variables from 2 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 230.0s OverallTime, 12 OverallIterations, 5 TraceHistogramMax, 151.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 5321 SDtfs, 15524 SDslu, 2446 SDs, 0 SdLazy, 31082 SolverSat, 9045 SolverUnsat, 14 SolverUnknown, 0 SolverNotchecked, 132.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4003 GetRequests, 3920 SyntacticMatches, 16 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 57.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=92265occurred 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: 9.6s AutomataMinimizationTime, 11 MinimizatonAttempts, 15675 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 62.4s InterpolantComputationTime, 5022 NumberOfCodeBlocks, 5022 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 6960 ConstructedInterpolants, 145 QuantifiedInterpolants, 7884052 SizeOfPredicates, 11 NumberOfNonLiveVariables, 3106 ConjunctsInSsa, 46 ConjunctsInUnsatCore, 23 InterpolantComputations, 12 PerfectInterpolantSequences, 4614/4947 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/Problem17_label28_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-18_12-18-06-561.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem17_label28_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-18_12-18-06-561.csv Completed graceful shutdown