java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label51_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 05:09:59,581 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 05:09:59,583 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 05:09:59,595 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 05:09:59,596 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 05:09:59,597 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 05:09:59,599 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 05:09:59,601 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 05:09:59,603 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 05:09:59,604 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 05:09:59,605 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 05:09:59,606 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 05:09:59,607 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 05:09:59,608 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 05:09:59,609 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 05:09:59,610 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 05:09:59,611 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 05:09:59,613 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 05:09:59,616 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 05:09:59,617 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 05:09:59,619 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 05:09:59,620 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 05:09:59,623 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 05:09:59,623 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 05:09:59,623 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 05:09:59,624 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 05:09:59,625 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 05:09:59,626 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 05:09:59,627 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 05:09:59,629 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 05:09:59,629 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 05:09:59,630 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-27 05:09:59,633 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-27 05:09:59,649 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 05:09:59,650 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 05:09:59,653 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 05:09:59,653 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 05:09:59,653 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 05:09:59,653 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 05:09:59,654 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-27 05:09:59,654 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 05:09:59,654 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 05:09:59,654 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 05:09:59,654 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 05:09:59,657 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 05:09:59,657 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 05:09:59,657 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 05:09:59,658 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 05:09:59,658 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 05:09:59,658 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 05:09:59,659 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 05:09:59,659 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 05:09:59,659 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 05:09:59,659 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 05:09:59,659 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 05:09:59,660 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 05:09:59,662 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 05:09:59,662 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 05:09:59,662 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 05:09:59,662 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 05:09:59,663 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 05:09:59,663 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 05:09:59,663 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 05:09:59,663 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 05:09:59,663 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 05:09:59,664 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 05:09:59,664 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 05:09:59,664 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 05:09:59,664 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 05:09:59,742 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 05:09:59,754 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 05:09:59,758 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 05:09:59,759 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 05:09:59,760 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 05:09:59,760 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label51_false-unreach-call.c [2018-10-27 05:09:59,822 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a852cc77f/620720bb09e24957a5028b41d5cf616b/FLAGfc9882350 [2018-10-27 05:10:00,493 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 05:10:00,494 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label51_false-unreach-call.c [2018-10-27 05:10:00,517 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a852cc77f/620720bb09e24957a5028b41d5cf616b/FLAGfc9882350 [2018-10-27 05:10:00,535 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a852cc77f/620720bb09e24957a5028b41d5cf616b [2018-10-27 05:10:00,547 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 05:10:00,548 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 05:10:00,550 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 05:10:00,550 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 05:10:00,554 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 05:10:00,557 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:10:00" (1/1) ... [2018-10-27 05:10:00,560 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20bf5984 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:10:00, skipping insertion in model container [2018-10-27 05:10:00,560 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:10:00" (1/1) ... [2018-10-27 05:10:00,571 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 05:10:00,651 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 05:10:01,237 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 05:10:01,242 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 05:10:01,472 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 05:10:01,493 INFO L193 MainTranslator]: Completed translation [2018-10-27 05:10:01,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:10:01 WrapperNode [2018-10-27 05:10:01,494 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 05:10:01,495 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 05:10:01,495 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 05:10:01,495 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 05:10:01,506 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:10:01" (1/1) ... [2018-10-27 05:10:01,541 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:10:01" (1/1) ... [2018-10-27 05:10:01,796 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 05:10:01,796 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 05:10:01,796 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 05:10:01,797 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 05:10:01,810 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:10:01" (1/1) ... [2018-10-27 05:10:01,810 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:10:01" (1/1) ... [2018-10-27 05:10:01,818 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:10:01" (1/1) ... [2018-10-27 05:10:01,819 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:10:01" (1/1) ... [2018-10-27 05:10:01,866 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:10:01" (1/1) ... [2018-10-27 05:10:01,883 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:10:01" (1/1) ... [2018-10-27 05:10:01,919 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:10:01" (1/1) ... [2018-10-27 05:10:01,932 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 05:10:01,933 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 05:10:01,933 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 05:10:01,933 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 05:10:01,934 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:10:01" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-27 05:10:01,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 05:10:01,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 05:10:01,990 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 05:10:01,990 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 05:10:01,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 05:10:01,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 05:10:01,991 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 05:10:01,991 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 05:10:06,297 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 05:10:06,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:10:06 BoogieIcfgContainer [2018-10-27 05:10:06,298 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 05:10:06,299 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 05:10:06,299 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 05:10:06,308 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 05:10:06,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:10:00" (1/3) ... [2018-10-27 05:10:06,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c2cd0eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:10:06, skipping insertion in model container [2018-10-27 05:10:06,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:10:01" (2/3) ... [2018-10-27 05:10:06,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c2cd0eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:10:06, skipping insertion in model container [2018-10-27 05:10:06,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:10:06" (3/3) ... [2018-10-27 05:10:06,312 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label51_false-unreach-call.c [2018-10-27 05:10:06,323 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 05:10:06,342 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 05:10:06,362 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 05:10:06,418 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 05:10:06,419 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 05:10:06,419 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 05:10:06,419 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 05:10:06,420 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 05:10:06,420 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 05:10:06,420 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 05:10:06,420 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 05:10:06,455 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-10-27 05:10:06,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-27 05:10:06,463 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:10:06,464 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:10:06,466 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:10:06,472 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:10:06,473 INFO L82 PathProgramCache]: Analyzing trace with hash 697929684, now seen corresponding path program 1 times [2018-10-27 05:10:06,475 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:10:06,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:10:06,527 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:10:06,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:10:06,528 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:10:06,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:10:06,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:10:06,865 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:10:06,866 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 05:10:06,866 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:10:06,871 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 05:10:06,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 05:10:06,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 05:10:06,889 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-10-27 05:10:10,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:10:10,177 INFO L93 Difference]: Finished difference Result 979 states and 1754 transitions. [2018-10-27 05:10:10,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 05:10:10,183 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2018-10-27 05:10:10,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:10:10,205 INFO L225 Difference]: With dead ends: 979 [2018-10-27 05:10:10,205 INFO L226 Difference]: Without dead ends: 680 [2018-10-27 05:10:10,216 INFO L605 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 [2018-10-27 05:10:10,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2018-10-27 05:10:10,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 484. [2018-10-27 05:10:10,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 484 states. [2018-10-27 05:10:10,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 730 transitions. [2018-10-27 05:10:10,300 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 730 transitions. Word has length 18 [2018-10-27 05:10:10,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:10:10,301 INFO L481 AbstractCegarLoop]: Abstraction has 484 states and 730 transitions. [2018-10-27 05:10:10,301 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 05:10:10,301 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 730 transitions. [2018-10-27 05:10:10,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-10-27 05:10:10,306 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:10:10,306 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-27 05:10:10,306 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:10:10,307 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:10:10,307 INFO L82 PathProgramCache]: Analyzing trace with hash 796033475, now seen corresponding path program 1 times [2018-10-27 05:10:10,307 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:10:10,308 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:10:10,309 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:10:10,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:10:10,309 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:10:10,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:10:10,656 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:10:10,657 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:10:10,657 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 05:10:10,657 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:10:10,659 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 05:10:10,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 05:10:10,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 05:10:10,660 INFO L87 Difference]: Start difference. First operand 484 states and 730 transitions. Second operand 6 states. [2018-10-27 05:10:14,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:10:14,833 INFO L93 Difference]: Finished difference Result 1555 states and 2493 transitions. [2018-10-27 05:10:14,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 05:10:14,834 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 91 [2018-10-27 05:10:14,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:10:14,842 INFO L225 Difference]: With dead ends: 1555 [2018-10-27 05:10:14,843 INFO L226 Difference]: Without dead ends: 1077 [2018-10-27 05:10:14,846 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 05:10:14,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1077 states. [2018-10-27 05:10:14,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1077 to 1063. [2018-10-27 05:10:14,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1063 states. [2018-10-27 05:10:14,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 1592 transitions. [2018-10-27 05:10:14,918 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 1592 transitions. Word has length 91 [2018-10-27 05:10:14,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:10:14,919 INFO L481 AbstractCegarLoop]: Abstraction has 1063 states and 1592 transitions. [2018-10-27 05:10:14,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 05:10:14,919 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 1592 transitions. [2018-10-27 05:10:14,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-10-27 05:10:14,926 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:10:14,926 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-27 05:10:14,926 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:10:14,927 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:10:14,927 INFO L82 PathProgramCache]: Analyzing trace with hash -1422670888, now seen corresponding path program 1 times [2018-10-27 05:10:14,927 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:10:14,928 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:10:14,928 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:10:14,928 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:10:14,929 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:10:14,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:10:15,211 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:10:15,211 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:10:15,211 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 05:10:15,211 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:10:15,213 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 05:10:15,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 05:10:15,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 05:10:15,215 INFO L87 Difference]: Start difference. First operand 1063 states and 1592 transitions. Second operand 4 states. [2018-10-27 05:10:18,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:10:18,538 INFO L93 Difference]: Finished difference Result 2906 states and 4462 transitions. [2018-10-27 05:10:18,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 05:10:18,545 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 92 [2018-10-27 05:10:18,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:10:18,559 INFO L225 Difference]: With dead ends: 2906 [2018-10-27 05:10:18,559 INFO L226 Difference]: Without dead ends: 1849 [2018-10-27 05:10:18,566 INFO L605 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 [2018-10-27 05:10:18,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1849 states. [2018-10-27 05:10:18,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1849 to 1647. [2018-10-27 05:10:18,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1647 states. [2018-10-27 05:10:18,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1647 states to 1647 states and 2425 transitions. [2018-10-27 05:10:18,637 INFO L78 Accepts]: Start accepts. Automaton has 1647 states and 2425 transitions. Word has length 92 [2018-10-27 05:10:18,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:10:18,637 INFO L481 AbstractCegarLoop]: Abstraction has 1647 states and 2425 transitions. [2018-10-27 05:10:18,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 05:10:18,638 INFO L276 IsEmpty]: Start isEmpty. Operand 1647 states and 2425 transitions. [2018-10-27 05:10:18,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-10-27 05:10:18,642 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:10:18,643 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-27 05:10:18,644 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:10:18,644 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:10:18,644 INFO L82 PathProgramCache]: Analyzing trace with hash 769801183, now seen corresponding path program 1 times [2018-10-27 05:10:18,644 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:10:18,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:10:18,645 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:10:18,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:10:18,646 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:10:18,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:10:19,194 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-27 05:10:19,304 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:10:19,304 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:10:19,304 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-27 05:10:19,305 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:10:19,305 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-27 05:10:19,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-27 05:10:19,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-27 05:10:19,306 INFO L87 Difference]: Start difference. First operand 1647 states and 2425 transitions. Second operand 7 states. [2018-10-27 05:10:24,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:10:24,963 INFO L93 Difference]: Finished difference Result 4753 states and 7319 transitions. [2018-10-27 05:10:24,970 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-27 05:10:24,970 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 93 [2018-10-27 05:10:24,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:10:24,996 INFO L225 Difference]: With dead ends: 4753 [2018-10-27 05:10:24,996 INFO L226 Difference]: Without dead ends: 2917 [2018-10-27 05:10:25,009 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-10-27 05:10:25,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2917 states. [2018-10-27 05:10:25,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2917 to 2760. [2018-10-27 05:10:25,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2760 states. [2018-10-27 05:10:25,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2760 states to 2760 states and 3964 transitions. [2018-10-27 05:10:25,106 INFO L78 Accepts]: Start accepts. Automaton has 2760 states and 3964 transitions. Word has length 93 [2018-10-27 05:10:25,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:10:25,106 INFO L481 AbstractCegarLoop]: Abstraction has 2760 states and 3964 transitions. [2018-10-27 05:10:25,106 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-27 05:10:25,106 INFO L276 IsEmpty]: Start isEmpty. Operand 2760 states and 3964 transitions. [2018-10-27 05:10:25,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-10-27 05:10:25,113 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:10:25,113 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:10:25,114 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:10:25,114 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:10:25,114 INFO L82 PathProgramCache]: Analyzing trace with hash 603688054, now seen corresponding path program 1 times [2018-10-27 05:10:25,114 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:10:25,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:10:25,115 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:10:25,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:10:25,116 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:10:25,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:10:25,497 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-10-27 05:10:25,497 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:10:25,498 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:10:25,499 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 211 with the following transitions: [2018-10-27 05:10:25,501 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [45], [47], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [514], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-27 05:10:25,566 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:10:25,566 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:10:27,169 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 05:10:27,170 INFO L272 AbstractInterpreter]: Visited 126 different actions 375 times. Merged at 7 different actions 21 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 28 variables. [2018-10-27 05:10:27,204 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:10:27,206 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 05:10:27,206 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:10:27,207 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-27 05:10:27,222 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:10:27,222 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 05:10:27,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:10:27,330 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 05:10:29,618 WARN L854 $PredicateComparison]: unable to prove that (or (exists ((v_~a23~0_478 Int)) (let ((.cse0 (mod (+ (div v_~a23~0_478 5) 1) 90))) (and (not (= (mod v_~a23~0_478 5) 0)) (< v_~a23~0_478 0) (<= c_~a23~0 (+ .cse0 49)) (= 0 .cse0) (<= |c_old(~a23~0)| v_~a23~0_478)))) (exists ((v_prenex_5 Int)) (let ((.cse1 (mod (div v_prenex_5 5) 90))) (and (<= 0 v_prenex_5) (= .cse1 0) (<= |c_old(~a23~0)| v_prenex_5) (<= c_~a23~0 (+ .cse1 49))))) (exists ((v_prenex_4 Int)) (let ((.cse3 (div v_prenex_4 5))) (let ((.cse2 (mod .cse3 90))) (and (not (= .cse2 0)) (= (mod v_prenex_4 5) 0) (<= (+ c_~a23~0 41) .cse2) (< .cse3 0) (<= |c_old(~a23~0)| v_prenex_4))))) (exists ((v_prenex_7 Int)) (let ((.cse5 (+ (div v_prenex_7 5) 1))) (let ((.cse4 (mod .cse5 90))) (and (< v_prenex_7 0) (not (= 0 .cse4)) (< .cse5 0) (<= |c_old(~a23~0)| v_prenex_7) (not (= (mod v_prenex_7 5) 0)) (<= (+ c_~a23~0 41) .cse4))))) (exists ((v_prenex_3 Int)) (let ((.cse6 (div v_prenex_3 5))) (and (<= c_~a23~0 (+ (mod .cse6 90) 49)) (= (mod v_prenex_3 5) 0) (<= 0 .cse6) (<= |c_old(~a23~0)| v_prenex_3)))) (exists ((v_prenex_1 Int)) (let ((.cse8 (div v_prenex_1 5))) (let ((.cse7 (mod .cse8 90))) (and (<= (+ c_~a23~0 41) .cse7) (< .cse8 0) (<= 0 v_prenex_1) (not (= .cse7 0)) (<= |c_old(~a23~0)| v_prenex_1))))) (exists ((v_prenex_2 Int)) (let ((.cse9 (div v_prenex_2 5))) (and (<= |c_old(~a23~0)| v_prenex_2) (<= 0 .cse9) (<= c_~a23~0 (+ (mod .cse9 90) 49)) (<= 0 v_prenex_2)))) (exists ((v_prenex_8 Int)) (let ((.cse10 (mod (div v_prenex_8 5) 90))) (and (<= |c_old(~a23~0)| v_prenex_8) (<= c_~a23~0 (+ .cse10 49)) (= .cse10 0) (= (mod v_prenex_8 5) 0)))) (exists ((v_prenex_6 Int)) (let ((.cse11 (+ (div v_prenex_6 5) 1))) (and (<= c_~a23~0 (+ (mod .cse11 90) 49)) (not (= (mod v_prenex_6 5) 0)) (< v_prenex_6 0) (<= |c_old(~a23~0)| v_prenex_6) (<= 0 .cse11))))) is different from true [2018-10-27 05:10:29,829 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 72 trivial. 2 not checked. [2018-10-27 05:10:29,830 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 05:10:30,229 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-10-27 05:10:30,250 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-27 05:10:30,250 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6, 6] total 8 [2018-10-27 05:10:30,251 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:10:30,251 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 05:10:30,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 05:10:30,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=30, Unknown=1, NotChecked=10, Total=56 [2018-10-27 05:10:30,252 INFO L87 Difference]: Start difference. First operand 2760 states and 3964 transitions. Second operand 3 states. [2018-10-27 05:10:33,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:10:33,055 INFO L93 Difference]: Finished difference Result 7028 states and 10690 transitions. [2018-10-27 05:10:33,056 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 05:10:33,056 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 210 [2018-10-27 05:10:33,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:10:33,080 INFO L225 Difference]: With dead ends: 7028 [2018-10-27 05:10:33,080 INFO L226 Difference]: Without dead ends: 4274 [2018-10-27 05:10:33,100 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 419 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=15, Invalid=30, Unknown=1, NotChecked=10, Total=56 [2018-10-27 05:10:33,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4274 states. [2018-10-27 05:10:33,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4274 to 4141. [2018-10-27 05:10:33,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4141 states. [2018-10-27 05:10:33,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4141 states to 4141 states and 6024 transitions. [2018-10-27 05:10:33,209 INFO L78 Accepts]: Start accepts. Automaton has 4141 states and 6024 transitions. Word has length 210 [2018-10-27 05:10:33,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:10:33,210 INFO L481 AbstractCegarLoop]: Abstraction has 4141 states and 6024 transitions. [2018-10-27 05:10:33,210 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 05:10:33,210 INFO L276 IsEmpty]: Start isEmpty. Operand 4141 states and 6024 transitions. [2018-10-27 05:10:33,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2018-10-27 05:10:33,218 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:10:33,218 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:10:33,218 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:10:33,219 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:10:33,219 INFO L82 PathProgramCache]: Analyzing trace with hash -2006407324, now seen corresponding path program 1 times [2018-10-27 05:10:33,219 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:10:33,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:10:33,220 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:10:33,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:10:33,221 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:10:33,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:10:33,426 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2018-10-27 05:10:33,427 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:10:33,427 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 05:10:33,427 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:10:33,428 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 05:10:33,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 05:10:33,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 05:10:33,428 INFO L87 Difference]: Start difference. First operand 4141 states and 6024 transitions. Second operand 3 states. [2018-10-27 05:10:36,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:10:36,333 INFO L93 Difference]: Finished difference Result 11742 states and 17980 transitions. [2018-10-27 05:10:36,333 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 05:10:36,333 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 241 [2018-10-27 05:10:36,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:10:36,377 INFO L225 Difference]: With dead ends: 11742 [2018-10-27 05:10:36,377 INFO L226 Difference]: Without dead ends: 7607 [2018-10-27 05:10:36,411 INFO L605 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 [2018-10-27 05:10:36,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7607 states. [2018-10-27 05:10:36,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7607 to 7411. [2018-10-27 05:10:36,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7411 states. [2018-10-27 05:10:36,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7411 states to 7411 states and 10748 transitions. [2018-10-27 05:10:36,616 INFO L78 Accepts]: Start accepts. Automaton has 7411 states and 10748 transitions. Word has length 241 [2018-10-27 05:10:36,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:10:36,617 INFO L481 AbstractCegarLoop]: Abstraction has 7411 states and 10748 transitions. [2018-10-27 05:10:36,617 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 05:10:36,617 INFO L276 IsEmpty]: Start isEmpty. Operand 7411 states and 10748 transitions. [2018-10-27 05:10:36,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2018-10-27 05:10:36,629 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:10:36,630 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:10:36,630 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:10:36,630 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:10:36,630 INFO L82 PathProgramCache]: Analyzing trace with hash 169630205, now seen corresponding path program 1 times [2018-10-27 05:10:36,631 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:10:36,631 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:10:36,632 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:10:36,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:10:36,632 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:10:36,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:10:37,296 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2018-10-27 05:10:37,297 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:10:37,297 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:10:37,297 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 258 with the following transitions: [2018-10-27 05:10:37,298 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [45], [47], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [649], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-27 05:10:37,305 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:10:37,305 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:10:37,896 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 05:10:37,896 INFO L272 AbstractInterpreter]: Visited 141 different actions 417 times. Merged at 7 different actions 18 times. Never widened. Found 3 fixpoints after 3 different actions. Largest state had 28 variables. [2018-10-27 05:10:37,934 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:10:37,934 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 05:10:37,934 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:10:37,934 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 05:10:37,950 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:10:37,950 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 05:10:38,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:10:38,047 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 05:10:38,677 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 3 [2018-10-27 05:10:38,728 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 127 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:10:38,728 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 05:10:39,334 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 127 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:10:39,366 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 05:10:39,366 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2018-10-27 05:10:39,367 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 05:10:39,367 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-27 05:10:39,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-27 05:10:39,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2018-10-27 05:10:39,369 INFO L87 Difference]: Start difference. First operand 7411 states and 10748 transitions. Second operand 10 states. [2018-10-27 05:10:43,551 WARN L179 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 13 [2018-10-27 05:10:55,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:10:55,664 INFO L93 Difference]: Finished difference Result 30334 states and 50284 transitions. [2018-10-27 05:10:55,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-10-27 05:10:55,665 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 257 [2018-10-27 05:10:55,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:10:55,803 INFO L225 Difference]: With dead ends: 30334 [2018-10-27 05:10:55,804 INFO L226 Difference]: Without dead ends: 22929 [2018-10-27 05:10:55,880 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 615 GetRequests, 537 SyntacticMatches, 2 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2258 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=971, Invalid=5035, Unknown=0, NotChecked=0, Total=6006 [2018-10-27 05:10:55,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22929 states. [2018-10-27 05:10:56,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22929 to 22159. [2018-10-27 05:10:56,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22159 states. [2018-10-27 05:10:56,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22159 states to 22159 states and 32372 transitions. [2018-10-27 05:10:56,582 INFO L78 Accepts]: Start accepts. Automaton has 22159 states and 32372 transitions. Word has length 257 [2018-10-27 05:10:56,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:10:56,583 INFO L481 AbstractCegarLoop]: Abstraction has 22159 states and 32372 transitions. [2018-10-27 05:10:56,583 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-27 05:10:56,583 INFO L276 IsEmpty]: Start isEmpty. Operand 22159 states and 32372 transitions. [2018-10-27 05:10:56,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2018-10-27 05:10:56,604 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:10:56,605 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:10:56,605 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:10:56,605 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:10:56,606 INFO L82 PathProgramCache]: Analyzing trace with hash -1502199694, now seen corresponding path program 1 times [2018-10-27 05:10:56,606 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:10:56,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:10:56,607 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:10:56,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:10:56,607 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:10:56,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:10:57,141 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-10-27 05:10:57,891 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 41 [2018-10-27 05:10:58,480 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 137 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:10:58,481 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:10:58,481 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:10:58,481 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 280 with the following transitions: [2018-10-27 05:10:58,482 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [45], [47], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [777], [781], [785], [789], [793], [797], [808], [812], [816], [820], [824], [828], [832], [843], [846], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-27 05:10:58,488 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:10:58,488 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:10:59,268 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 05:10:59,268 INFO L272 AbstractInterpreter]: Visited 153 different actions 453 times. Merged at 7 different actions 18 times. Never widened. Found 3 fixpoints after 3 different actions. Largest state had 28 variables. [2018-10-27 05:10:59,305 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:10:59,306 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 05:10:59,306 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:10:59,306 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-27 05:10:59,319 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:10:59,319 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 05:10:59,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:10:59,417 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 05:10:59,762 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 137 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:10:59,762 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 05:10:59,975 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 22 [2018-10-27 05:11:00,558 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 137 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:11:00,590 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 05:11:00,590 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5, 5] total 20 [2018-10-27 05:11:00,590 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 05:11:00,591 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-27 05:11:00,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-27 05:11:00,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2018-10-27 05:11:00,593 INFO L87 Difference]: Start difference. First operand 22159 states and 32372 transitions. Second operand 18 states. [2018-10-27 05:11:04,583 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 17 [2018-10-27 05:11:11,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:11:11,769 INFO L93 Difference]: Finished difference Result 44905 states and 75010 transitions. [2018-10-27 05:11:11,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-10-27 05:11:11,769 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 279 [2018-10-27 05:11:11,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:11:11,907 INFO L225 Difference]: With dead ends: 44905 [2018-10-27 05:11:11,908 INFO L226 Difference]: Without dead ends: 23132 [2018-10-27 05:11:12,012 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 623 GetRequests, 565 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 817 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=808, Invalid=2614, Unknown=0, NotChecked=0, Total=3422 [2018-10-27 05:11:12,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23132 states. [2018-10-27 05:11:12,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23132 to 22301. [2018-10-27 05:11:12,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22301 states. [2018-10-27 05:11:12,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22301 states to 22301 states and 31603 transitions. [2018-10-27 05:11:12,697 INFO L78 Accepts]: Start accepts. Automaton has 22301 states and 31603 transitions. Word has length 279 [2018-10-27 05:11:12,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:11:12,698 INFO L481 AbstractCegarLoop]: Abstraction has 22301 states and 31603 transitions. [2018-10-27 05:11:12,698 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-27 05:11:12,698 INFO L276 IsEmpty]: Start isEmpty. Operand 22301 states and 31603 transitions. [2018-10-27 05:11:12,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2018-10-27 05:11:12,718 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:11:12,718 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:11:12,719 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:11:12,719 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:11:12,719 INFO L82 PathProgramCache]: Analyzing trace with hash 613043494, now seen corresponding path program 1 times [2018-10-27 05:11:12,719 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:11:12,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:11:12,720 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:11:12,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:11:12,721 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:11:12,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:11:13,137 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 22 proven. 2 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2018-10-27 05:11:13,138 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:11:13,138 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:11:13,138 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 295 with the following transitions: [2018-10-27 05:11:13,139 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [45], [47], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [774], [776], [777], [781], [785], [789], [793], [797], [808], [812], [816], [820], [824], [828], [832], [843], [846], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-27 05:11:13,147 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:11:13,148 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:11:13,304 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 05:11:13,305 INFO L272 AbstractInterpreter]: Visited 150 different actions 150 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-10-27 05:11:13,343 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:11:13,343 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 05:11:13,886 INFO L227 lantSequenceWeakener]: Weakened 284 states. On average, predicates are now at 73.03% of their original sizes. [2018-10-27 05:11:13,886 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 05:11:14,172 INFO L415 sIntCurrentIteration]: We unified 293 AI predicates to 293 [2018-10-27 05:11:14,173 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 05:11:14,174 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 05:11:14,174 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [3] total 8 [2018-10-27 05:11:14,174 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:11:14,176 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-27 05:11:14,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-27 05:11:14,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-27 05:11:14,176 INFO L87 Difference]: Start difference. First operand 22301 states and 31603 transitions. Second operand 7 states. [2018-10-27 05:11:45,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:11:45,580 INFO L93 Difference]: Finished difference Result 44220 states and 62789 transitions. [2018-10-27 05:11:45,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 05:11:45,580 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 294 [2018-10-27 05:11:45,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:11:45,680 INFO L225 Difference]: With dead ends: 44220 [2018-10-27 05:11:45,680 INFO L226 Difference]: Without dead ends: 22305 [2018-10-27 05:11:45,738 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 294 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2018-10-27 05:11:45,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22305 states. [2018-10-27 05:11:46,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22305 to 22302. [2018-10-27 05:11:46,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22302 states. [2018-10-27 05:11:46,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22302 states to 22302 states and 31602 transitions. [2018-10-27 05:11:46,182 INFO L78 Accepts]: Start accepts. Automaton has 22302 states and 31602 transitions. Word has length 294 [2018-10-27 05:11:46,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:11:46,182 INFO L481 AbstractCegarLoop]: Abstraction has 22302 states and 31602 transitions. [2018-10-27 05:11:46,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-27 05:11:46,182 INFO L276 IsEmpty]: Start isEmpty. Operand 22302 states and 31602 transitions. [2018-10-27 05:11:46,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2018-10-27 05:11:46,207 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:11:46,207 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-10-27 05:11:46,207 INFO L424 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:11:46,208 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:11:46,208 INFO L82 PathProgramCache]: Analyzing trace with hash 534364079, now seen corresponding path program 1 times [2018-10-27 05:11:46,208 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:11:46,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:11:46,209 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:11:46,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:11:46,209 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:11:46,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:11:46,956 WARN L179 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-10-27 05:11:47,182 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-27 05:11:48,169 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 30 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:11:48,170 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:11:48,170 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:11:48,170 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 311 with the following transitions: [2018-10-27 05:11:48,170 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [45], [47], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [777], [781], [785], [789], [793], [797], [808], [812], [816], [820], [824], [828], [832], [843], [846], [847], [851], [862], [866], [869], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-27 05:11:48,175 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:11:48,175 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:11:48,535 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 05:11:48,535 INFO L272 AbstractInterpreter]: Visited 157 different actions 468 times. Merged at 7 different actions 21 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 28 variables. [2018-10-27 05:11:48,545 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:11:48,545 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 05:11:48,545 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:11:48,545 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-27 05:11:48,553 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:11:48,553 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 05:11:48,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:11:48,650 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 05:11:51,006 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 33 [2018-10-27 05:11:53,333 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 164 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:11:53,333 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 05:11:54,113 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 164 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:11:54,134 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 05:11:54,135 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 5] total 19 [2018-10-27 05:11:54,135 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 05:11:54,136 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-27 05:11:54,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-27 05:11:54,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=271, Unknown=2, NotChecked=0, Total=342 [2018-10-27 05:11:54,137 INFO L87 Difference]: Start difference. First operand 22302 states and 31602 transitions. Second operand 17 states. [2018-10-27 05:12:10,593 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 21 [2018-10-27 05:13:21,164 WARN L179 SmtUtils]: Spent 1.66 s on a formula simplification. DAG size of input: 70 DAG size of output: 43 [2018-10-27 05:13:36,513 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 35 Received shutdown request... [2018-10-27 05:14:04,363 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-10-27 05:14:04,364 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 05:14:04,370 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 05:14:04,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 05:14:04 BoogieIcfgContainer [2018-10-27 05:14:04,370 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 05:14:04,371 INFO L168 Benchmark]: Toolchain (without parser) took 243824.12 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 3.6 GB in the end (delta: -2.2 GB). Peak memory consumption was 440.1 MB. Max. memory is 7.1 GB. [2018-10-27 05:14:04,372 INFO L168 Benchmark]: CDTParser took 0.24 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. [2018-10-27 05:14:04,373 INFO L168 Benchmark]: CACSL2BoogieTranslator took 944.79 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. [2018-10-27 05:14:04,374 INFO L168 Benchmark]: Boogie Procedure Inliner took 300.97 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 767.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -861.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2018-10-27 05:14:04,375 INFO L168 Benchmark]: Boogie Preprocessor took 135.94 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 05:14:04,375 INFO L168 Benchmark]: RCFGBuilder took 4365.71 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 187.4 MB). Peak memory consumption was 187.4 MB. Max. memory is 7.1 GB. [2018-10-27 05:14:04,376 INFO L168 Benchmark]: TraceAbstraction took 238071.37 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 3.6 GB in the end (delta: -1.6 GB). Peak memory consumption was 283.0 MB. Max. memory is 7.1 GB. [2018-10-27 05:14:04,380 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 944.79 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 300.97 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 767.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -861.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 135.94 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 4365.71 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 187.4 MB). Peak memory consumption was 187.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 238071.37 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 3.6 GB in the end (delta: -1.6 GB). Peak memory consumption was 283.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 39]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 39). Cancelled while BasicCegarLoop was constructing difference of abstraction (22302states) and FLOYD_HOARE automaton (currently 36 states, 17 states before enhancement),while ReachableStatesComputation was computing reachable states (27526 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 237.9s OverallTime, 10 OverallIterations, 3 TraceHistogramMax, 212.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2270 SDtfs, 14969 SDslu, 2902 SDs, 0 SdLazy, 29687 SolverSat, 6063 SolverUnsat, 52 SolverUnknown, 0 SolverNotchecked, 184.5s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 2666 GetRequests, 2436 SyntacticMatches, 16 SemanticMatches, 214 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3731 ImplicationChecksByTransitivity, 20.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22302occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 3.7s AbstIntTime, 5 AbstIntIterations, 1 AbstIntStrong, 0.9983823400717596 AbsIntWeakeningRatio, 0.09897610921501707 AbsIntAvgWeakeningVarsNumRemoved, 18.296928327645052 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.4s AutomataMinimizationTime, 9 MinimizatonAttempts, 2502 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 16.0s InterpolantComputationTime, 2941 NumberOfCodeBlocks, 2941 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 3979 ConstructedInterpolants, 9 QuantifiedInterpolants, 8099110 SizeOfPredicates, 5 NumberOfNonLiveVariables, 1882 ConjunctsInSsa, 34 ConjunctsInUnsatCore, 18 InterpolantComputations, 6 PerfectInterpolantSequences, 1687/1891 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown