java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -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/Problem16_label49_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 09:20:34,584 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 09:20:34,587 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 09:20:34,601 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 09:20:34,602 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 09:20:34,603 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 09:20:34,604 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 09:20:34,607 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 09:20:34,609 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 09:20:34,613 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 09:20:34,614 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 09:20:34,615 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 09:20:34,616 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 09:20:34,617 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 09:20:34,621 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 09:20:34,624 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 09:20:34,626 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 09:20:34,628 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 09:20:34,635 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 09:20:34,637 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 09:20:34,641 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 09:20:34,643 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 09:20:34,647 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 09:20:34,647 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 09:20:34,647 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 09:20:34,648 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 09:20:34,652 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 09:20:34,653 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 09:20:34,654 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 09:20:34,655 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 09:20:34,657 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 09:20:34,658 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 09:20:34,658 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 09:20:34,658 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 09:20:34,659 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 09:20:34,662 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 09:20:34,663 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-11-07 09:20:34,687 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 09:20:34,687 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 09:20:34,688 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 09:20:34,688 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 09:20:34,691 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 09:20:34,691 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 09:20:34,691 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 09:20:34,691 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 09:20:34,691 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 09:20:34,692 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 09:20:34,692 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 09:20:34,692 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 09:20:34,692 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 09:20:34,692 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 09:20:34,693 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 09:20:34,693 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 09:20:34,694 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 09:20:34,694 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 09:20:34,694 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 09:20:34,694 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 09:20:34,694 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 09:20:34,694 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 09:20:34,695 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 09:20:34,695 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 09:20:34,695 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 09:20:34,696 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 09:20:34,696 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 09:20:34,696 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 09:20:34,696 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 09:20:34,696 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 09:20:34,697 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 09:20:34,697 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 09:20:34,697 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 09:20:34,697 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 09:20:34,697 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 09:20:34,699 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 09:20:34,746 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 09:20:34,759 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 09:20:34,763 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 09:20:34,765 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 09:20:34,765 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 09:20:34,766 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label49_true-unreach-call.c [2018-11-07 09:20:34,826 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a63fe41ab/c00c4c1935c446b98690536dda196179/FLAG215db329f [2018-11-07 09:20:35,564 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 09:20:35,565 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label49_true-unreach-call.c [2018-11-07 09:20:35,587 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a63fe41ab/c00c4c1935c446b98690536dda196179/FLAG215db329f [2018-11-07 09:20:35,604 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a63fe41ab/c00c4c1935c446b98690536dda196179 [2018-11-07 09:20:35,616 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 09:20:35,618 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 09:20:35,619 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 09:20:35,619 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 09:20:35,623 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 09:20:35,624 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:20:35" (1/1) ... [2018-11-07 09:20:35,627 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37f3e3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:20:35, skipping insertion in model container [2018-11-07 09:20:35,628 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:20:35" (1/1) ... [2018-11-07 09:20:35,639 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 09:20:35,741 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 09:20:36,463 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 09:20:36,468 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 09:20:36,752 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 09:20:36,775 INFO L193 MainTranslator]: Completed translation [2018-11-07 09:20:36,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:20:36 WrapperNode [2018-11-07 09:20:36,776 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 09:20:36,777 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 09:20:36,777 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 09:20:36,778 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 09:20:36,789 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:20:36" (1/1) ... [2018-11-07 09:20:36,978 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:20:36" (1/1) ... [2018-11-07 09:20:36,987 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 09:20:36,988 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 09:20:36,988 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 09:20:36,988 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 09:20:37,002 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:20:36" (1/1) ... [2018-11-07 09:20:37,002 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:20:36" (1/1) ... [2018-11-07 09:20:37,009 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:20:36" (1/1) ... [2018-11-07 09:20:37,010 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:20:36" (1/1) ... [2018-11-07 09:20:37,075 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:20:36" (1/1) ... [2018-11-07 09:20:37,092 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:20:36" (1/1) ... [2018-11-07 09:20:37,114 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:20:36" (1/1) ... [2018-11-07 09:20:37,132 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 09:20:37,133 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 09:20:37,133 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 09:20:37,133 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 09:20:37,135 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:20:36" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 09:20:37,215 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 09:20:37,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 09:20:37,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 09:20:37,216 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 09:20:37,216 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 09:20:37,216 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 09:20:37,216 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 09:20:37,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 09:20:37,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 09:20:37,218 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 09:20:37,218 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 09:20:43,458 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 09:20:43,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:20:43 BoogieIcfgContainer [2018-11-07 09:20:43,459 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 09:20:43,461 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 09:20:43,463 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 09:20:43,467 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 09:20:43,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 09:20:35" (1/3) ... [2018-11-07 09:20:43,468 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@631d5d6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:20:43, skipping insertion in model container [2018-11-07 09:20:43,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:20:36" (2/3) ... [2018-11-07 09:20:43,469 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@631d5d6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:20:43, skipping insertion in model container [2018-11-07 09:20:43,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:20:43" (3/3) ... [2018-11-07 09:20:43,475 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label49_true-unreach-call.c [2018-11-07 09:20:43,488 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 09:20:43,500 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 09:20:43,517 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 09:20:43,569 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 09:20:43,570 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 09:20:43,570 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 09:20:43,570 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 09:20:43,570 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 09:20:43,570 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 09:20:43,570 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 09:20:43,571 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 09:20:43,608 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-11-07 09:20:43,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-11-07 09:20:43,619 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:20:43,620 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:20:43,623 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:20:43,628 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:20:43,629 INFO L82 PathProgramCache]: Analyzing trace with hash -854858477, now seen corresponding path program 1 times [2018-11-07 09:20:43,631 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:20:43,681 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:20:43,681 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:20:43,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:20:43,682 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:20:43,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:20:44,182 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-11-07 09:20:44,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:20:44,280 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:20:44,281 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 09:20:44,281 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:20:44,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 09:20:44,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 09:20:44,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:20:44,323 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 4 states. [2018-11-07 09:20:50,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:20:50,369 INFO L93 Difference]: Finished difference Result 1513 states and 2838 transitions. [2018-11-07 09:20:50,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 09:20:50,372 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2018-11-07 09:20:50,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:20:50,401 INFO L225 Difference]: With dead ends: 1513 [2018-11-07 09:20:50,401 INFO L226 Difference]: Without dead ends: 1097 [2018-11-07 09:20:50,410 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:20:50,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1097 states. [2018-11-07 09:20:50,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1097 to 744. [2018-11-07 09:20:50,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-11-07 09:20:50,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1301 transitions. [2018-11-07 09:20:50,537 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1301 transitions. Word has length 67 [2018-11-07 09:20:50,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:20:50,538 INFO L480 AbstractCegarLoop]: Abstraction has 744 states and 1301 transitions. [2018-11-07 09:20:50,538 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 09:20:50,538 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1301 transitions. [2018-11-07 09:20:50,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-11-07 09:20:50,555 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:20:50,555 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:20:50,556 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:20:50,556 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:20:50,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1317509741, now seen corresponding path program 1 times [2018-11-07 09:20:50,557 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:20:50,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:20:50,558 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:20:50,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:20:50,559 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:20:50,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:20:50,910 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:20:50,911 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:20:50,911 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 09:20:50,911 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:20:50,913 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:20:50,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:20:50,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:20:50,914 INFO L87 Difference]: Start difference. First operand 744 states and 1301 transitions. Second operand 6 states. [2018-11-07 09:20:55,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:20:55,628 INFO L93 Difference]: Finished difference Result 2196 states and 3924 transitions. [2018-11-07 09:20:55,636 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 09:20:55,636 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 138 [2018-11-07 09:20:55,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:20:55,653 INFO L225 Difference]: With dead ends: 2196 [2018-11-07 09:20:55,653 INFO L226 Difference]: Without dead ends: 1458 [2018-11-07 09:20:55,657 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 09:20:55,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1458 states. [2018-11-07 09:20:55,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1458 to 1438. [2018-11-07 09:20:55,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1438 states. [2018-11-07 09:20:55,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1438 states to 1438 states and 2463 transitions. [2018-11-07 09:20:55,738 INFO L78 Accepts]: Start accepts. Automaton has 1438 states and 2463 transitions. Word has length 138 [2018-11-07 09:20:55,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:20:55,738 INFO L480 AbstractCegarLoop]: Abstraction has 1438 states and 2463 transitions. [2018-11-07 09:20:55,739 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:20:55,739 INFO L276 IsEmpty]: Start isEmpty. Operand 1438 states and 2463 transitions. [2018-11-07 09:20:55,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-11-07 09:20:55,748 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:20:55,749 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:20:55,749 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:20:55,749 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:20:55,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1542259272, now seen corresponding path program 1 times [2018-11-07 09:20:55,752 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:20:55,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:20:55,753 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:20:55,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:20:55,753 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:20:55,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:20:55,993 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:20:55,994 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:20:55,994 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 09:20:55,994 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:20:55,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 09:20:55,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 09:20:55,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 09:20:55,995 INFO L87 Difference]: Start difference. First operand 1438 states and 2463 transitions. Second operand 5 states. [2018-11-07 09:20:59,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:20:59,953 INFO L93 Difference]: Finished difference Result 3597 states and 6200 transitions. [2018-11-07 09:20:59,956 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 09:20:59,956 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2018-11-07 09:20:59,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:20:59,974 INFO L225 Difference]: With dead ends: 3597 [2018-11-07 09:20:59,974 INFO L226 Difference]: Without dead ends: 2165 [2018-11-07 09:20:59,981 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 09:20:59,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2165 states. [2018-11-07 09:21:00,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2165 to 2145. [2018-11-07 09:21:00,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2145 states. [2018-11-07 09:21:00,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2145 states to 2145 states and 3126 transitions. [2018-11-07 09:21:00,065 INFO L78 Accepts]: Start accepts. Automaton has 2145 states and 3126 transitions. Word has length 139 [2018-11-07 09:21:00,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:21:00,066 INFO L480 AbstractCegarLoop]: Abstraction has 2145 states and 3126 transitions. [2018-11-07 09:21:00,066 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 09:21:00,066 INFO L276 IsEmpty]: Start isEmpty. Operand 2145 states and 3126 transitions. [2018-11-07 09:21:00,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2018-11-07 09:21:00,072 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:21:00,072 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:21:00,072 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:21:00,073 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:21:00,074 INFO L82 PathProgramCache]: Analyzing trace with hash -353980736, now seen corresponding path program 1 times [2018-11-07 09:21:00,074 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:21:00,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:21:00,075 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:21:00,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:21:00,075 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:21:00,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:21:00,469 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 09:21:00,929 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:21:00,930 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:21:00,930 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 09:21:00,930 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:21:00,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:21:00,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:21:00,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:21:00,933 INFO L87 Difference]: Start difference. First operand 2145 states and 3126 transitions. Second operand 6 states. [2018-11-07 09:21:04,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:21:04,639 INFO L93 Difference]: Finished difference Result 7058 states and 10436 transitions. [2018-11-07 09:21:04,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 09:21:04,640 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 231 [2018-11-07 09:21:04,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:21:04,674 INFO L225 Difference]: With dead ends: 7058 [2018-11-07 09:21:04,674 INFO L226 Difference]: Without dead ends: 4919 [2018-11-07 09:21:04,694 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 09:21:04,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4919 states. [2018-11-07 09:21:04,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4919 to 4879. [2018-11-07 09:21:04,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4879 states. [2018-11-07 09:21:04,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4879 states to 4879 states and 6857 transitions. [2018-11-07 09:21:04,852 INFO L78 Accepts]: Start accepts. Automaton has 4879 states and 6857 transitions. Word has length 231 [2018-11-07 09:21:04,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:21:04,853 INFO L480 AbstractCegarLoop]: Abstraction has 4879 states and 6857 transitions. [2018-11-07 09:21:04,853 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:21:04,853 INFO L276 IsEmpty]: Start isEmpty. Operand 4879 states and 6857 transitions. [2018-11-07 09:21:04,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-11-07 09:21:04,859 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:21:04,860 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:21:04,860 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:21:04,860 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:21:04,861 INFO L82 PathProgramCache]: Analyzing trace with hash 1524621864, now seen corresponding path program 1 times [2018-11-07 09:21:04,861 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:21:04,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:21:04,862 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:21:04,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:21:04,862 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:21:04,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:21:05,313 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:21:05,314 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:21:05,314 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 09:21:05,314 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:21:05,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:21:05,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:21:05,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:21:05,316 INFO L87 Difference]: Start difference. First operand 4879 states and 6857 transitions. Second operand 6 states. [2018-11-07 09:21:09,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:21:09,032 INFO L93 Difference]: Finished difference Result 12216 states and 17406 transitions. [2018-11-07 09:21:09,041 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 09:21:09,042 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 251 [2018-11-07 09:21:09,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:21:09,083 INFO L225 Difference]: With dead ends: 12216 [2018-11-07 09:21:09,084 INFO L226 Difference]: Without dead ends: 7343 [2018-11-07 09:21:09,117 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 09:21:09,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7343 states. [2018-11-07 09:21:09,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7343 to 7306. [2018-11-07 09:21:09,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7306 states. [2018-11-07 09:21:09,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7306 states to 7306 states and 9825 transitions. [2018-11-07 09:21:09,328 INFO L78 Accepts]: Start accepts. Automaton has 7306 states and 9825 transitions. Word has length 251 [2018-11-07 09:21:09,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:21:09,329 INFO L480 AbstractCegarLoop]: Abstraction has 7306 states and 9825 transitions. [2018-11-07 09:21:09,329 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:21:09,329 INFO L276 IsEmpty]: Start isEmpty. Operand 7306 states and 9825 transitions. [2018-11-07 09:21:09,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2018-11-07 09:21:09,335 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:21:09,335 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:21:09,335 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:21:09,336 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:21:09,336 INFO L82 PathProgramCache]: Analyzing trace with hash 331280388, now seen corresponding path program 1 times [2018-11-07 09:21:09,336 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:21:09,337 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:21:09,337 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:21:09,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:21:09,338 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:21:09,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:21:09,884 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-11-07 09:21:10,073 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 179 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:21:10,074 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:21:10,074 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:21:10,075 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 269 with the following transitions: [2018-11-07 09:21:10,077 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [579], [587], [595], [603], [611], [615], [617], [620], [628], [636], [644], [652], [660], [668], [673], [676], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [912], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 09:21:10,140 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:21:10,140 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:21:10,808 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 09:21:10,810 INFO L272 AbstractInterpreter]: Visited 135 different actions 135 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 09:21:10,836 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:21:10,836 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 09:21:11,317 INFO L227 lantSequenceWeakener]: Weakened 259 states. On average, predicates are now at 78.16% of their original sizes. [2018-11-07 09:21:11,318 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 09:21:11,577 INFO L415 sIntCurrentIteration]: We unified 267 AI predicates to 267 [2018-11-07 09:21:11,577 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 09:21:11,578 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:21:11,578 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2018-11-07 09:21:11,578 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:21:11,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:21:11,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:21:11,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:21:11,580 INFO L87 Difference]: Start difference. First operand 7306 states and 9825 transitions. Second operand 6 states. [2018-11-07 09:21:50,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:21:50,043 INFO L93 Difference]: Finished difference Result 14946 states and 20038 transitions. [2018-11-07 09:21:50,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 09:21:50,043 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 268 [2018-11-07 09:21:50,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:21:50,080 INFO L225 Difference]: With dead ends: 14946 [2018-11-07 09:21:50,080 INFO L226 Difference]: Without dead ends: 7646 [2018-11-07 09:21:50,109 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 268 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-07 09:21:50,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7646 states. [2018-11-07 09:21:50,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7646 to 7644. [2018-11-07 09:21:50,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7644 states. [2018-11-07 09:21:50,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7644 states to 7644 states and 10172 transitions. [2018-11-07 09:21:50,290 INFO L78 Accepts]: Start accepts. Automaton has 7644 states and 10172 transitions. Word has length 268 [2018-11-07 09:21:50,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:21:50,291 INFO L480 AbstractCegarLoop]: Abstraction has 7644 states and 10172 transitions. [2018-11-07 09:21:50,291 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:21:50,291 INFO L276 IsEmpty]: Start isEmpty. Operand 7644 states and 10172 transitions. [2018-11-07 09:21:50,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2018-11-07 09:21:50,299 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:21:50,299 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:21:50,300 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:21:50,300 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:21:50,300 INFO L82 PathProgramCache]: Analyzing trace with hash -2119334232, now seen corresponding path program 1 times [2018-11-07 09:21:50,300 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:21:50,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:21:50,302 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:21:50,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:21:50,302 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:21:50,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:21:50,670 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 09:21:50,985 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-07 09:21:50,985 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:21:50,986 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:21:50,986 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 316 with the following transitions: [2018-11-07 09:21:50,987 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [579], [587], [595], [603], [611], [615], [617], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 09:21:51,003 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:21:51,004 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:21:51,586 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 09:21:51,586 INFO L272 AbstractInterpreter]: Visited 255 different actions 752 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 09:21:51,626 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:21:51,626 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 09:21:52,013 INFO L227 lantSequenceWeakener]: Weakened 312 states. On average, predicates are now at 80.73% of their original sizes. [2018-11-07 09:21:52,014 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 09:21:52,207 INFO L415 sIntCurrentIteration]: We unified 314 AI predicates to 314 [2018-11-07 09:21:52,207 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 09:21:52,208 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:21:52,208 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [4] total 11 [2018-11-07 09:21:52,208 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:21:52,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 09:21:52,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 09:21:52,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-11-07 09:21:52,209 INFO L87 Difference]: Start difference. First operand 7644 states and 10172 transitions. Second operand 9 states. [2018-11-07 09:23:45,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:23:45,684 INFO L93 Difference]: Finished difference Result 15880 states and 21216 transitions. [2018-11-07 09:23:45,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-07 09:23:45,684 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 315 [2018-11-07 09:23:45,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:23:45,713 INFO L225 Difference]: With dead ends: 15880 [2018-11-07 09:23:45,713 INFO L226 Difference]: Without dead ends: 8580 [2018-11-07 09:23:45,738 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 321 GetRequests, 307 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2018-11-07 09:23:45,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8580 states. [2018-11-07 09:23:45,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8580 to 8571. [2018-11-07 09:23:45,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8571 states. [2018-11-07 09:23:45,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8571 states to 8571 states and 11166 transitions. [2018-11-07 09:23:45,901 INFO L78 Accepts]: Start accepts. Automaton has 8571 states and 11166 transitions. Word has length 315 [2018-11-07 09:23:45,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:23:45,902 INFO L480 AbstractCegarLoop]: Abstraction has 8571 states and 11166 transitions. [2018-11-07 09:23:45,902 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 09:23:45,902 INFO L276 IsEmpty]: Start isEmpty. Operand 8571 states and 11166 transitions. [2018-11-07 09:23:45,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2018-11-07 09:23:45,911 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:23:45,911 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:23:45,912 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:23:45,912 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:23:45,912 INFO L82 PathProgramCache]: Analyzing trace with hash -1198417913, now seen corresponding path program 1 times [2018-11-07 09:23:45,912 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:23:45,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:23:45,914 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:23:45,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:23:45,914 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:23:45,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:23:46,251 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-11-07 09:23:46,384 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 252 proven. 116 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2018-11-07 09:23:46,384 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:23:46,384 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:23:46,384 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 361 with the following transitions: [2018-11-07 09:23:46,385 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [579], [587], [595], [603], [611], [615], [617], [620], [628], [636], [644], [652], [660], [668], [673], [676], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [912], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 09:23:46,388 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:23:46,388 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:23:46,589 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 09:23:46,590 INFO L272 AbstractInterpreter]: Visited 139 different actions 404 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 09:23:46,627 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:23:46,627 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 09:23:46,943 INFO L227 lantSequenceWeakener]: Weakened 357 states. On average, predicates are now at 80.68% of their original sizes. [2018-11-07 09:23:46,944 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 09:23:47,153 INFO L415 sIntCurrentIteration]: We unified 359 AI predicates to 359 [2018-11-07 09:23:47,153 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 09:23:47,154 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:23:47,154 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [7] total 15 [2018-11-07 09:23:47,154 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:23:47,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 09:23:47,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 09:23:47,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-11-07 09:23:47,155 INFO L87 Difference]: Start difference. First operand 8571 states and 11166 transitions. Second operand 10 states. Received shutdown request... [2018-11-07 09:24:38,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-11-07 09:24:38,252 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 09:24:38,257 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 09:24:38,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 09:24:38 BoogieIcfgContainer [2018-11-07 09:24:38,258 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 09:24:38,259 INFO L168 Benchmark]: Toolchain (without parser) took 242642.19 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.6 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-11-07 09:24:38,260 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 09:24:38,260 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1158.01 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-11-07 09:24:38,261 INFO L168 Benchmark]: Boogie Procedure Inliner took 210.36 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 738.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -852.8 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. [2018-11-07 09:24:38,262 INFO L168 Benchmark]: Boogie Preprocessor took 144.52 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. [2018-11-07 09:24:38,263 INFO L168 Benchmark]: RCFGBuilder took 6326.66 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 252.9 MB). Peak memory consumption was 252.9 MB. Max. memory is 7.1 GB. [2018-11-07 09:24:38,264 INFO L168 Benchmark]: TraceAbstraction took 234797.15 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 2.6 GB in the end (delta: -713.4 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-11-07 09:24:38,270 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1158.01 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 210.36 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 738.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -852.8 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 144.52 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 6326.66 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 252.9 MB). Peak memory consumption was 252.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 234797.15 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 2.6 GB in the end (delta: -713.4 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 187]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 187). Cancelled while BasicCegarLoop was constructing difference of abstraction (8571states) and FLOYD_HOARE automaton (currently 19 states, 10 states before enhancement),while ReachableStatesComputation was computing reachable states (9240 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 234.6s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 225.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1553 SDtfs, 12582 SDslu, 1332 SDs, 0 SdLazy, 13924 SolverSat, 4123 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 185.4s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 1003 GetRequests, 933 SyntacticMatches, 4 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8571occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 1.6s AbstIntTime, 3 AbstIntIterations, 3 AbstIntStrong, 0.9977558378538227 AbsIntWeakeningRatio, 0.08297872340425531 AbsIntAvgWeakeningVarsNumRemoved, 15.854255319148937 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 7 MinimizatonAttempts, 481 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 1769 NumberOfCodeBlocks, 1769 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1761 ConstructedInterpolants, 0 QuantifiedInterpolants, 2191256 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 721/905 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown