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_label20_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 23:28:32,954 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 23:28:32,957 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 23:28:32,972 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 23:28:32,973 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 23:28:32,974 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 23:28:32,976 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 23:28:32,978 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 23:28:32,980 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 23:28:32,981 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 23:28:32,982 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 23:28:32,982 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 23:28:32,983 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 23:28:32,984 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 23:28:32,985 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 23:28:32,986 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 23:28:32,987 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 23:28:32,988 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 23:28:32,990 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 23:28:32,992 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 23:28:32,993 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 23:28:32,994 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 23:28:32,997 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 23:28:32,997 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 23:28:32,997 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 23:28:32,998 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 23:28:32,999 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 23:28:33,000 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 23:28:33,001 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 23:28:33,002 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 23:28:33,002 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 23:28:33,003 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-24 23:28:33,005 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 [2018-10-24 23:28:33,021 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 23:28:33,021 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 23:28:33,022 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 23:28:33,022 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 23:28:33,022 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 23:28:33,022 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 23:28:33,023 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-24 23:28:33,023 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 23:28:33,023 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-24 23:28:33,023 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 23:28:33,023 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 23:28:33,024 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 23:28:33,024 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 23:28:33,024 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 23:28:33,025 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 23:28:33,025 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 23:28:33,025 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 23:28:33,025 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 23:28:33,025 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 23:28:33,025 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 23:28:33,026 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 23:28:33,026 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 23:28:33,026 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 23:28:33,026 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 23:28:33,026 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 23:28:33,027 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 23:28:33,027 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 23:28:33,027 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 23:28:33,027 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 23:28:33,028 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 23:28:33,028 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 23:28:33,028 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 23:28:33,028 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 23:28:33,028 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 23:28:33,028 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 23:28:33,029 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 23:28:33,073 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 23:28:33,085 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 23:28:33,089 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 23:28:33,090 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 23:28:33,091 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 23:28:33,092 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label20_false-unreach-call.c [2018-10-24 23:28:33,149 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e11a96a53/dd5e36b2230e423dbb2f7bbd2f0fb8b1/FLAGb63f3f146 [2018-10-24 23:28:33,729 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 23:28:33,733 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label20_false-unreach-call.c [2018-10-24 23:28:33,749 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e11a96a53/dd5e36b2230e423dbb2f7bbd2f0fb8b1/FLAGb63f3f146 [2018-10-24 23:28:33,766 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e11a96a53/dd5e36b2230e423dbb2f7bbd2f0fb8b1 [2018-10-24 23:28:33,777 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 23:28:33,779 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 23:28:33,780 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 23:28:33,781 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 23:28:33,784 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 23:28:33,785 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:28:33" (1/1) ... [2018-10-24 23:28:33,789 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7be7802 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:28:33, skipping insertion in model container [2018-10-24 23:28:33,789 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:28:33" (1/1) ... [2018-10-24 23:28:33,800 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 23:28:33,883 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 23:28:34,529 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 23:28:34,534 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 23:28:34,698 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 23:28:34,716 INFO L193 MainTranslator]: Completed translation [2018-10-24 23:28:34,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:28:34 WrapperNode [2018-10-24 23:28:34,717 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 23:28:34,718 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 23:28:34,718 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 23:28:34,719 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 23:28:34,729 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:28:34" (1/1) ... [2018-10-24 23:28:34,756 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:28:34" (1/1) ... [2018-10-24 23:28:35,020 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 23:28:35,020 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 23:28:35,021 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 23:28:35,021 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 23:28:35,032 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:28:34" (1/1) ... [2018-10-24 23:28:35,032 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:28:34" (1/1) ... [2018-10-24 23:28:35,048 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:28:34" (1/1) ... [2018-10-24 23:28:35,049 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:28:34" (1/1) ... [2018-10-24 23:28:35,113 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:28:34" (1/1) ... [2018-10-24 23:28:35,140 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:28:34" (1/1) ... [2018-10-24 23:28:35,166 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:28:34" (1/1) ... [2018-10-24 23:28:35,187 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 23:28:35,188 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 23:28:35,188 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 23:28:35,188 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 23:28:35,189 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:28:34" (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 [2018-10-24 23:28:35,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 23:28:35,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 23:28:35,256 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 23:28:35,257 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 23:28:35,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 23:28:35,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 23:28:35,257 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 23:28:35,257 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 23:28:39,487 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 23:28:39,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:28:39 BoogieIcfgContainer [2018-10-24 23:28:39,488 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 23:28:39,489 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 23:28:39,490 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 23:28:39,493 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 23:28:39,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:28:33" (1/3) ... [2018-10-24 23:28:39,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34d55cf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:28:39, skipping insertion in model container [2018-10-24 23:28:39,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:28:34" (2/3) ... [2018-10-24 23:28:39,495 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34d55cf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:28:39, skipping insertion in model container [2018-10-24 23:28:39,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:28:39" (3/3) ... [2018-10-24 23:28:39,499 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label20_false-unreach-call.c [2018-10-24 23:28:39,509 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 23:28:39,522 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 23:28:39,543 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 23:28:39,582 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 23:28:39,582 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 23:28:39,582 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 23:28:39,582 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 23:28:39,583 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 23:28:39,583 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 23:28:39,583 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 23:28:39,583 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 23:28:39,612 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-10-24 23:28:39,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-24 23:28:39,619 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:28:39,621 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 23:28:39,623 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:28:39,634 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:28:39,634 INFO L82 PathProgramCache]: Analyzing trace with hash -562401748, now seen corresponding path program 1 times [2018-10-24 23:28:39,637 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:28:39,684 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:28:39,684 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:28:39,684 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:28:39,684 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:28:39,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:28:39,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:28:39,973 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:28:39,974 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 23:28:39,974 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:28:39,980 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 23:28:39,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 23:28:39,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 23:28:40,001 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-10-24 23:28:43,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:28:43,401 INFO L93 Difference]: Finished difference Result 982 states and 1758 transitions. [2018-10-24 23:28:43,401 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 23:28:43,403 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2018-10-24 23:28:43,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:28:43,430 INFO L225 Difference]: With dead ends: 982 [2018-10-24 23:28:43,430 INFO L226 Difference]: Without dead ends: 683 [2018-10-24 23:28:43,451 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 [2018-10-24 23:28:43,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2018-10-24 23:28:43,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 683. [2018-10-24 23:28:43,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 683 states. [2018-10-24 23:28:43,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 1005 transitions. [2018-10-24 23:28:43,598 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 1005 transitions. Word has length 16 [2018-10-24 23:28:43,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:28:43,598 INFO L481 AbstractCegarLoop]: Abstraction has 683 states and 1005 transitions. [2018-10-24 23:28:43,600 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 23:28:43,600 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 1005 transitions. [2018-10-24 23:28:43,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-10-24 23:28:43,607 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:28:43,608 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 23:28:43,608 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:28:43,608 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:28:43,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1344219984, now seen corresponding path program 1 times [2018-10-24 23:28:43,609 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:28:43,610 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:28:43,610 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:28:43,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:28:43,611 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:28:43,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:28:43,868 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:28:43,869 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:28:43,869 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 23:28:43,869 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:28:43,871 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 23:28:43,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 23:28:43,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 23:28:43,872 INFO L87 Difference]: Start difference. First operand 683 states and 1005 transitions. Second operand 4 states. [2018-10-24 23:28:47,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:28:47,757 INFO L93 Difference]: Finished difference Result 2516 states and 3860 transitions. [2018-10-24 23:28:47,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 23:28:47,760 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 90 [2018-10-24 23:28:47,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:28:47,776 INFO L225 Difference]: With dead ends: 2516 [2018-10-24 23:28:47,776 INFO L226 Difference]: Without dead ends: 1839 [2018-10-24 23:28:47,782 INFO L605 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 [2018-10-24 23:28:47,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1839 states. [2018-10-24 23:28:47,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1839 to 1821. [2018-10-24 23:28:47,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1821 states. [2018-10-24 23:28:47,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1821 states to 1821 states and 2605 transitions. [2018-10-24 23:28:47,880 INFO L78 Accepts]: Start accepts. Automaton has 1821 states and 2605 transitions. Word has length 90 [2018-10-24 23:28:47,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:28:47,881 INFO L481 AbstractCegarLoop]: Abstraction has 1821 states and 2605 transitions. [2018-10-24 23:28:47,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 23:28:47,881 INFO L276 IsEmpty]: Start isEmpty. Operand 1821 states and 2605 transitions. [2018-10-24 23:28:47,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-10-24 23:28:47,893 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:28:47,895 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 23:28:47,895 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:28:47,896 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:28:47,896 INFO L82 PathProgramCache]: Analyzing trace with hash 2138652655, now seen corresponding path program 1 times [2018-10-24 23:28:47,897 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:28:47,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:28:47,898 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:28:47,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:28:47,898 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:28:47,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:28:48,344 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:28:48,344 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:28:48,344 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-24 23:28:48,345 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:28:48,345 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 23:28:48,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 23:28:48,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 23:28:48,346 INFO L87 Difference]: Start difference. First operand 1821 states and 2605 transitions. Second operand 7 states. [2018-10-24 23:28:56,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:28:56,677 INFO L93 Difference]: Finished difference Result 5411 states and 8267 transitions. [2018-10-24 23:28:56,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-24 23:28:56,678 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 111 [2018-10-24 23:28:56,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:28:56,709 INFO L225 Difference]: With dead ends: 5411 [2018-10-24 23:28:56,709 INFO L226 Difference]: Without dead ends: 3401 [2018-10-24 23:28:56,729 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-10-24 23:28:56,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3401 states. [2018-10-24 23:28:56,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3401 to 2787. [2018-10-24 23:28:56,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2787 states. [2018-10-24 23:28:56,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2787 states to 2787 states and 4027 transitions. [2018-10-24 23:28:56,852 INFO L78 Accepts]: Start accepts. Automaton has 2787 states and 4027 transitions. Word has length 111 [2018-10-24 23:28:56,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:28:56,852 INFO L481 AbstractCegarLoop]: Abstraction has 2787 states and 4027 transitions. [2018-10-24 23:28:56,853 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 23:28:56,853 INFO L276 IsEmpty]: Start isEmpty. Operand 2787 states and 4027 transitions. [2018-10-24 23:28:56,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-10-24 23:28:56,857 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:28:56,858 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 23:28:56,858 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:28:56,858 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:28:56,858 INFO L82 PathProgramCache]: Analyzing trace with hash 1670217856, now seen corresponding path program 1 times [2018-10-24 23:28:56,859 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:28:56,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:28:56,860 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:28:56,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:28:56,860 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:28:56,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:28:57,192 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 23:28:57,420 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 18 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 23:28:57,421 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:28:57,421 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 23:28:57,422 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 185 with the following transitions: [2018-10-24 23:28:57,424 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [29], [31], [34], [42], [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], [506], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [594], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-24 23:28:57,469 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 23:28:57,470 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 23:28:58,378 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 23:28:58,382 INFO L272 AbstractInterpreter]: Visited 100 different actions 100 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-10-24 23:28:58,424 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:28:58,424 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 23:28:59,253 INFO L232 lantSequenceWeakener]: Weakened 175 states. On average, predicates are now at 72.91% of their original sizes. [2018-10-24 23:28:59,253 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 23:28:59,504 INFO L413 sIntCurrentIteration]: We have 183 unified AI predicates [2018-10-24 23:28:59,505 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 23:28:59,506 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 23:28:59,506 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-10-24 23:28:59,506 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:28:59,507 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 23:28:59,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 23:28:59,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 23:28:59,508 INFO L87 Difference]: Start difference. First operand 2787 states and 4027 transitions. Second operand 6 states. [2018-10-24 23:29:55,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:29:55,031 INFO L93 Difference]: Finished difference Result 5760 states and 8262 transitions. [2018-10-24 23:29:55,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 23:29:55,031 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 184 [2018-10-24 23:29:55,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:29:55,050 INFO L225 Difference]: With dead ends: 5760 [2018-10-24 23:29:55,050 INFO L226 Difference]: Without dead ends: 2979 [2018-10-24 23:29:55,061 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 184 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-24 23:29:55,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2979 states. [2018-10-24 23:29:55,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2979 to 2977. [2018-10-24 23:29:55,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2977 states. [2018-10-24 23:29:55,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2977 states to 2977 states and 4227 transitions. [2018-10-24 23:29:55,150 INFO L78 Accepts]: Start accepts. Automaton has 2977 states and 4227 transitions. Word has length 184 [2018-10-24 23:29:55,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:29:55,151 INFO L481 AbstractCegarLoop]: Abstraction has 2977 states and 4227 transitions. [2018-10-24 23:29:55,151 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 23:29:55,151 INFO L276 IsEmpty]: Start isEmpty. Operand 2977 states and 4227 transitions. [2018-10-24 23:29:55,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-10-24 23:29:55,157 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:29:55,157 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 23:29:55,158 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:29:55,158 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:29:55,158 INFO L82 PathProgramCache]: Analyzing trace with hash -104208154, now seen corresponding path program 1 times [2018-10-24 23:29:55,158 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:29:55,159 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:29:55,159 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:29:55,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:29:55,160 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:29:55,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:29:55,846 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-10-24 23:29:55,847 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:29:55,847 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 23:29:55,847 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 229 with the following transitions: [2018-10-24 23:29:55,848 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [29], [31], [34], [42], [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], [594], [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] [2018-10-24 23:29:55,854 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 23:29:55,854 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 23:29:57,051 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 23:29:57,051 INFO L272 AbstractInterpreter]: Visited 126 different actions 374 times. Merged at 7 different actions 20 times. Never widened. Found 3 fixpoints after 3 different actions. Largest state had 28 variables. [2018-10-24 23:29:57,057 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:29:57,058 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 23:29:57,058 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:29:57,058 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 [2018-10-24 23:29:57,070 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:29:57,070 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 23:29:57,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:29:57,190 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 23:29:58,506 WARN L179 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 52 DAG size of output: 35 [2018-10-24 23:29:58,659 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-10-24 23:29:58,660 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 23:29:59,590 WARN L179 SmtUtils]: Spent 626.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 6 [2018-10-24 23:29:59,870 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 11 [2018-10-24 23:30:00,215 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-10-24 23:30:00,252 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-24 23:30:00,253 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 11 [2018-10-24 23:30:00,253 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:30:00,254 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 23:30:00,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 23:30:00,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-10-24 23:30:00,254 INFO L87 Difference]: Start difference. First operand 2977 states and 4227 transitions. Second operand 6 states. [2018-10-24 23:30:05,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:30:05,510 INFO L93 Difference]: Finished difference Result 8399 states and 12862 transitions. [2018-10-24 23:30:05,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 23:30:05,511 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 228 [2018-10-24 23:30:05,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:30:05,550 INFO L225 Difference]: With dead ends: 8399 [2018-10-24 23:30:05,550 INFO L226 Difference]: Without dead ends: 5618 [2018-10-24 23:30:05,573 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 451 SyntacticMatches, 6 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-10-24 23:30:05,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5618 states. [2018-10-24 23:30:05,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5618 to 5438. [2018-10-24 23:30:05,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5438 states. [2018-10-24 23:30:05,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5438 states to 5438 states and 8012 transitions. [2018-10-24 23:30:05,727 INFO L78 Accepts]: Start accepts. Automaton has 5438 states and 8012 transitions. Word has length 228 [2018-10-24 23:30:05,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:30:05,728 INFO L481 AbstractCegarLoop]: Abstraction has 5438 states and 8012 transitions. [2018-10-24 23:30:05,728 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 23:30:05,728 INFO L276 IsEmpty]: Start isEmpty. Operand 5438 states and 8012 transitions. [2018-10-24 23:30:05,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-10-24 23:30:05,736 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:30:05,737 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 23:30:05,737 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:30:05,738 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:30:05,738 INFO L82 PathProgramCache]: Analyzing trace with hash 1490785444, now seen corresponding path program 1 times [2018-10-24 23:30:05,738 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:30:05,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:30:05,739 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:30:05,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:30:05,739 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:30:05,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:30:06,346 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 117 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:30:06,347 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:30:06,347 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 23:30:06,347 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 252 with the following transitions: [2018-10-24 23:30:06,348 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [29], [31], [34], [42], [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], [618], [621], [625], [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], [772], [776], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-24 23:30:06,356 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 23:30:06,357 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 23:30:06,901 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 23:30:06,902 INFO L272 AbstractInterpreter]: Visited 141 different actions 409 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-10-24 23:30:06,939 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:30:06,940 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 23:30:06,940 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:30:06,940 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 [2018-10-24 23:30:06,958 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:30:06,958 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 23:30:07,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:30:07,070 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 23:30:07,237 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2018-10-24 23:30:07,237 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 23:30:07,483 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2018-10-24 23:30:07,513 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-24 23:30:07,514 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2018-10-24 23:30:07,514 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:30:07,514 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 23:30:07,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 23:30:07,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-10-24 23:30:07,515 INFO L87 Difference]: Start difference. First operand 5438 states and 8012 transitions. Second operand 3 states. [2018-10-24 23:30:09,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:30:09,111 INFO L93 Difference]: Finished difference Result 14245 states and 22031 transitions. [2018-10-24 23:30:09,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 23:30:09,114 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 251 [2018-10-24 23:30:09,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:30:09,170 INFO L225 Difference]: With dead ends: 14245 [2018-10-24 23:30:09,170 INFO L226 Difference]: Without dead ends: 9003 [2018-10-24 23:30:09,212 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 507 GetRequests, 502 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-10-24 23:30:09,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9003 states. [2018-10-24 23:30:09,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9003 to 9001. [2018-10-24 23:30:09,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9001 states. [2018-10-24 23:30:09,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9001 states to 9001 states and 12494 transitions. [2018-10-24 23:30:09,470 INFO L78 Accepts]: Start accepts. Automaton has 9001 states and 12494 transitions. Word has length 251 [2018-10-24 23:30:09,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:30:09,470 INFO L481 AbstractCegarLoop]: Abstraction has 9001 states and 12494 transitions. [2018-10-24 23:30:09,470 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 23:30:09,471 INFO L276 IsEmpty]: Start isEmpty. Operand 9001 states and 12494 transitions. [2018-10-24 23:30:09,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2018-10-24 23:30:09,485 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:30:09,485 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 23:30:09,486 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:30:09,486 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:30:09,486 INFO L82 PathProgramCache]: Analyzing trace with hash 221255465, now seen corresponding path program 1 times [2018-10-24 23:30:09,486 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:30:09,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:30:09,487 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:30:09,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:30:09,488 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:30:09,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:30:10,414 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 13 proven. 122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:30:10,414 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:30:10,414 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 23:30:10,415 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 266 with the following transitions: [2018-10-24 23:30:10,415 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [29], [31], [34], [42], [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], [784], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-24 23:30:10,428 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 23:30:10,428 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 23:30:11,992 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 23:30:11,993 INFO L272 AbstractInterpreter]: Visited 141 different actions 558 times. Merged at 7 different actions 29 times. Widened at 1 different actions 1 times. Found 4 fixpoints after 3 different actions. Largest state had 28 variables. [2018-10-24 23:30:12,028 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:30:12,029 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 23:30:12,029 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:30:12,029 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 [2018-10-24 23:30:12,040 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:30:12,041 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 23:30:12,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:30:12,135 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 23:30:12,192 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-10-24 23:30:12,193 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 23:30:12,662 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-10-24 23:30:12,689 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-24 23:30:12,689 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 8 [2018-10-24 23:30:12,689 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:30:12,690 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 23:30:12,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 23:30:12,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-10-24 23:30:12,690 INFO L87 Difference]: Start difference. First operand 9001 states and 12494 transitions. Second operand 3 states. [2018-10-24 23:30:13,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:30:13,940 INFO L93 Difference]: Finished difference Result 20121 states and 28672 transitions. [2018-10-24 23:30:13,943 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 23:30:13,943 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 265 [2018-10-24 23:30:13,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:30:13,999 INFO L225 Difference]: With dead ends: 20121 [2018-10-24 23:30:13,999 INFO L226 Difference]: Without dead ends: 11316 [2018-10-24 23:30:14,046 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 540 GetRequests, 532 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-10-24 23:30:14,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11316 states. [2018-10-24 23:30:14,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11316 to 10930. [2018-10-24 23:30:14,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10930 states. [2018-10-24 23:30:14,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10930 states to 10930 states and 15084 transitions. [2018-10-24 23:30:14,336 INFO L78 Accepts]: Start accepts. Automaton has 10930 states and 15084 transitions. Word has length 265 [2018-10-24 23:30:14,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:30:14,337 INFO L481 AbstractCegarLoop]: Abstraction has 10930 states and 15084 transitions. [2018-10-24 23:30:14,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 23:30:14,337 INFO L276 IsEmpty]: Start isEmpty. Operand 10930 states and 15084 transitions. [2018-10-24 23:30:14,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2018-10-24 23:30:14,356 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:30:14,357 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 23:30:14,357 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:30:14,357 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:30:14,358 INFO L82 PathProgramCache]: Analyzing trace with hash -2083563637, now seen corresponding path program 1 times [2018-10-24 23:30:14,358 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:30:14,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:30:14,359 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:30:14,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:30:14,359 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:30:14,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:30:14,993 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 146 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:30:14,994 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:30:14,994 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 23:30:14,994 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 302 with the following transitions: [2018-10-24 23:30:14,995 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [29], [31], [34], [42], [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], [772], [776], [777], [781], [785], [789], [793], [797], [808], [812], [816], [820], [824], [828], [832], [843], [847], [851], [862], [866], [870], [874], [878], [881], [884], [888], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-24 23:30:14,999 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 23:30:14,999 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 23:30:15,508 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 23:30:15,509 INFO L272 AbstractInterpreter]: Visited 162 different actions 472 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-10-24 23:30:15,540 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:30:15,541 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 23:30:15,541 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:30:15,541 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 [2018-10-24 23:30:15,557 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:30:15,558 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 23:30:15,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:30:15,659 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 23:30:15,803 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2018-10-24 23:30:15,803 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 23:30:15,949 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2018-10-24 23:30:15,970 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-24 23:30:15,970 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [6] total 9 [2018-10-24 23:30:15,970 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:30:15,971 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 23:30:15,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 23:30:15,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-10-24 23:30:15,972 INFO L87 Difference]: Start difference. First operand 10930 states and 15084 transitions. Second operand 3 states. [2018-10-24 23:30:18,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:30:18,060 INFO L93 Difference]: Finished difference Result 21657 states and 30001 transitions. [2018-10-24 23:30:18,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 23:30:18,061 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 301 [2018-10-24 23:30:18,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:30:18,107 INFO L225 Difference]: With dead ends: 21657 [2018-10-24 23:30:18,107 INFO L226 Difference]: Without dead ends: 10923 [2018-10-24 23:30:18,137 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 607 GetRequests, 599 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-10-24 23:30:18,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10923 states. [2018-10-24 23:30:18,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10923 to 10921. [2018-10-24 23:30:18,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10921 states. [2018-10-24 23:30:18,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10921 states to 10921 states and 15059 transitions. [2018-10-24 23:30:18,378 INFO L78 Accepts]: Start accepts. Automaton has 10921 states and 15059 transitions. Word has length 301 [2018-10-24 23:30:18,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:30:18,379 INFO L481 AbstractCegarLoop]: Abstraction has 10921 states and 15059 transitions. [2018-10-24 23:30:18,379 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 23:30:18,379 INFO L276 IsEmpty]: Start isEmpty. Operand 10921 states and 15059 transitions. [2018-10-24 23:30:18,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2018-10-24 23:30:18,405 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:30:18,405 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 23:30:18,405 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:30:18,406 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:30:18,406 INFO L82 PathProgramCache]: Analyzing trace with hash 575149684, now seen corresponding path program 1 times [2018-10-24 23:30:18,406 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:30:18,407 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:30:18,407 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:30:18,407 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:30:18,407 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:30:18,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:30:19,304 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-10-24 23:30:19,577 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-10-24 23:30:19,889 WARN L179 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2018-10-24 23:30:20,421 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 146 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:30:20,421 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:30:20,421 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 23:30:20,421 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 310 with the following transitions: [2018-10-24 23:30:20,422 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [29], [31], [34], [42], [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], [772], [776], [777], [781], [785], [789], [793], [797], [808], [812], [816], [820], [824], [828], [832], [843], [847], [851], [862], [866], [870], [874], [878], [889], [893], [897], [901], [905], [909], [913], [924], [928], [932], [935], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-24 23:30:20,426 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 23:30:20,426 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 23:30:25,364 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 23:30:25,364 INFO L272 AbstractInterpreter]: Visited 172 different actions 846 times. Merged at 7 different actions 31 times. Never widened. Found 5 fixpoints after 2 different actions. Largest state had 28 variables. [2018-10-24 23:30:25,374 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:30:25,374 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 23:30:25,374 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:30:25,374 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 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 [2018-10-24 23:30:25,383 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:30:25,383 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 23:30:25,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:30:25,477 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 23:30:26,162 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 146 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:30:26,163 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 23:30:26,945 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 146 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:30:26,968 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 23:30:26,968 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 7, 8] total 21 [2018-10-24 23:30:26,968 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 23:30:26,969 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-24 23:30:26,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-24 23:30:26,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2018-10-24 23:30:26,970 INFO L87 Difference]: Start difference. First operand 10921 states and 15059 transitions. Second operand 16 states. [2018-10-24 23:30:34,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:30:34,955 INFO L93 Difference]: Finished difference Result 28465 states and 44309 transitions. [2018-10-24 23:30:34,955 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-10-24 23:30:34,955 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 309 [2018-10-24 23:30:34,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:30:35,070 INFO L225 Difference]: With dead ends: 28465 [2018-10-24 23:30:35,071 INFO L226 Difference]: Without dead ends: 17740 [2018-10-24 23:30:35,138 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 660 GetRequests, 613 SyntacticMatches, 3 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 510 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=565, Invalid=1505, Unknown=0, NotChecked=0, Total=2070 [2018-10-24 23:30:35,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17740 states. [2018-10-24 23:30:35,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17740 to 17236. [2018-10-24 23:30:35,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17236 states. [2018-10-24 23:30:35,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17236 states to 17236 states and 23604 transitions. [2018-10-24 23:30:35,630 INFO L78 Accepts]: Start accepts. Automaton has 17236 states and 23604 transitions. Word has length 309 [2018-10-24 23:30:35,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:30:35,631 INFO L481 AbstractCegarLoop]: Abstraction has 17236 states and 23604 transitions. [2018-10-24 23:30:35,631 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-24 23:30:35,631 INFO L276 IsEmpty]: Start isEmpty. Operand 17236 states and 23604 transitions. [2018-10-24 23:30:35,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2018-10-24 23:30:35,659 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:30:35,660 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 23:30:35,660 INFO L424 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:30:35,660 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:30:35,660 INFO L82 PathProgramCache]: Analyzing trace with hash -592269015, now seen corresponding path program 1 times [2018-10-24 23:30:35,660 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:30:35,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:30:35,662 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:30:35,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:30:35,662 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:30:35,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:30:36,194 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-24 23:30:36,675 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 8 proven. 17 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2018-10-24 23:30:36,675 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:30:36,676 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 23:30:36,676 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 325 with the following transitions: [2018-10-24 23:30:36,676 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [29], [31], [34], [42], [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], [772], [776], [777], [781], [785], [789], [793], [797], [808], [812], [816], [820], [824], [828], [832], [843], [847], [851], [862], [866], [870], [874], [878], [889], [893], [897], [901], [905], [909], [913], [924], [928], [932], [936], [940], [944], [948], [952], [956], [960], [971], [975], [979], [983], [987], [991], [994], [999], [1001], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-24 23:30:36,680 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 23:30:36,681 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 23:30:37,860 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 23:30:37,861 INFO L272 AbstractInterpreter]: Visited 187 different actions 919 times. Merged at 7 different actions 31 times. Never widened. Found 5 fixpoints after 2 different actions. Largest state had 28 variables. [2018-10-24 23:30:37,870 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:30:37,870 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 23:30:37,870 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:30:37,870 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 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 [2018-10-24 23:30:37,879 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:30:37,880 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 23:30:37,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:30:37,986 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 23:30:40,124 WARN L179 SmtUtils]: Spent 2.03 s on a formula simplification. DAG size of input: 42 DAG size of output: 32 [2018-10-24 23:30:40,371 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2018-10-24 23:30:40,372 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 23:30:40,860 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:40,946 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:40,985 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:41,043 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:41,080 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:41,120 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:41,160 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:41,206 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:41,244 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:41,317 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:41,361 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:41,398 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:41,442 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:41,481 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:41,519 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:41,562 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:41,613 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:41,652 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:41,689 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:41,731 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:41,772 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:41,816 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:41,864 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:41,902 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:41,941 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:42,016 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:42,054 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:42,099 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:42,141 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:42,178 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:42,217 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:42,286 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:42,361 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:42,400 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:42,447 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:42,485 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:42,524 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:42,562 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:42,884 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:43,190 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:43,505 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:43,740 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:43,777 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:43,815 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:43,853 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:43,889 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:43,929 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:44,038 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:44,077 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:44,114 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:44,154 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:44,190 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:44,235 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:44,271 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:44,307 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:44,375 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:44,424 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:44,464 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:44,520 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:44,602 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:44,647 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:44,686 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:44,725 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:44,774 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:44,814 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:44,851 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:44,887 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:44,940 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:44,976 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:45,012 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:45,086 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:45,131 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:45,171 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:45,206 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:45,241 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:45,276 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:45,312 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:45,347 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:45,386 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:45,421 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:45,458 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:45,493 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:45,532 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:45,568 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:45,605 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:45,652 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:45,690 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:45,724 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:45,760 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:45,796 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:45,832 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:45,869 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:45,906 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:45,966 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:46,003 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:46,044 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:46,082 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:46,117 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:46,154 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:46,228 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:46,263 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:46,304 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:46,338 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:46,380 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:46,698 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:47,007 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:47,164 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:47,202 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:47,241 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:47,281 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:47,318 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:47,352 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:47,392 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:47,656 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:47,690 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:47,727 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:47,778 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:47,817 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:47,855 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:47,892 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:47,928 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:47,963 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:48,000 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:48,039 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:48,180 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:48,218 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:48,254 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:48,291 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:48,327 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:48,362 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:48,399 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:48,437 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:48,472 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:48,512 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:48,552 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:48,586 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:48,622 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:48,663 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:48,701 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:48,737 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:48,773 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:48,808 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:48,844 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:48,880 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:48,915 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:48,952 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:48,989 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:49,025 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:49,059 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:49,111 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:49,146 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:49,183 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:49,218 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:49,268 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:49,305 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:49,347 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:49,383 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:49,422 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:49,456 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:49,492 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:49,541 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:49,592 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:49,639 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:49,687 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:49,727 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:49,774 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:49,818 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:30:51,515 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 21 proven. 127 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:30:51,536 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 23:30:51,537 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2018-10-24 23:30:51,537 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 23:30:51,539 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-24 23:30:51,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-24 23:30:51,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=397, Unknown=0, NotChecked=0, Total=506 [2018-10-24 23:30:51,540 INFO L87 Difference]: Start difference. First operand 17236 states and 23604 transitions. Second operand 16 states. [2018-10-24 23:31:25,764 WARN L179 SmtUtils]: Spent 2.52 s on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2018-10-24 23:31:38,888 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-10-24 23:31:43,418 WARN L179 SmtUtils]: Spent 849.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2018-10-24 23:32:16,023 WARN L179 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 50 DAG size of output: 48 Received shutdown request... [2018-10-24 23:32:32,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-10-24 23:32:32,539 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 23:32:32,544 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 23:32:32,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 11:32:32 BoogieIcfgContainer [2018-10-24 23:32:32,544 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 23:32:32,545 INFO L168 Benchmark]: Toolchain (without parser) took 238766.81 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -292.4 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-10-24 23:32:32,546 INFO L168 Benchmark]: CDTParser took 0.22 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. [2018-10-24 23:32:32,546 INFO L168 Benchmark]: CACSL2BoogieTranslator took 937.30 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. [2018-10-24 23:32:32,547 INFO L168 Benchmark]: Boogie Procedure Inliner took 301.88 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 744.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -832.7 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2018-10-24 23:32:32,548 INFO L168 Benchmark]: Boogie Preprocessor took 167.18 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. [2018-10-24 23:32:32,548 INFO L168 Benchmark]: RCFGBuilder took 4300.32 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: 182.3 MB). Peak memory consumption was 182.3 MB. Max. memory is 7.1 GB. [2018-10-24 23:32:32,549 INFO L168 Benchmark]: TraceAbstraction took 233054.92 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 2.0 GB in the beginning and 1.7 GB in the end (delta: 294.6 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-10-24 23:32:32,554 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 937.30 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 301.88 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 744.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -832.7 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 167.18 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 4300.32 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: 182.3 MB). Peak memory consumption was 182.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 233054.92 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 2.0 GB in the beginning and 1.7 GB in the end (delta: 294.6 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 33]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 33). Cancelled while BasicCegarLoop was constructing difference of abstraction (17236states) and FLOYD_HOARE automaton (currently 99 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (24223 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 232.9s OverallTime, 10 OverallIterations, 3 TraceHistogramMax, 191.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2308 SDtfs, 15837 SDslu, 2151 SDs, 0 SdLazy, 22923 SolverSat, 5567 SolverUnsat, 34 SolverUnknown, 0 SolverNotchecked, 165.8s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 3737 GetRequests, 3358 SyntacticMatches, 180 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7300 ImplicationChecksByTransitivity, 28.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17236occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 11.1s AbstIntTime, 7 AbstIntIterations, 1 AbstIntStrong, 0.997409976180468 AbsIntWeakeningRatio, 0.15300546448087432 AbsIntAvgWeakeningVarsNumRemoved, 17.956284153005466 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.8s AutomataMinimizationTime, 9 MinimizatonAttempts, 1708 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 25.2s InterpolantComputationTime, 3757 NumberOfCodeBlocks, 3757 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 5413 ConstructedInterpolants, 324 QuantifiedInterpolants, 14265555 SizeOfPredicates, 15 NumberOfNonLiveVariables, 2928 ConjunctsInSsa, 55 ConjunctsInUnsatCore, 22 InterpolantComputations, 10 PerfectInterpolantSequences, 2142/2542 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown