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.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label16_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 21:07:53,547 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 21:07:53,549 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 21:07:53,562 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 21:07:53,562 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 21:07:53,563 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 21:07:53,565 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 21:07:53,566 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 21:07:53,568 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 21:07:53,569 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 21:07:53,570 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 21:07:53,570 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 21:07:53,571 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 21:07:53,572 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 21:07:53,573 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 21:07:53,574 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 21:07:53,575 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 21:07:53,577 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 21:07:53,579 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 21:07:53,581 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 21:07:53,582 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 21:07:53,583 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 21:07:53,585 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 21:07:53,586 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 21:07:53,586 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 21:07:53,587 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 21:07:53,588 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 21:07:53,589 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 21:07:53,590 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 21:07:53,591 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 21:07:53,591 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 21:07:53,592 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 21:07:53,592 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 21:07:53,592 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 21:07:53,593 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 21:07:53,594 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 21:07:53,595 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 21:07:53,613 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 21:07:53,613 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 21:07:53,614 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 21:07:53,614 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 21:07:53,614 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 21:07:53,614 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 21:07:53,615 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 21:07:53,615 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 21:07:53,615 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 21:07:53,615 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 21:07:53,615 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 21:07:53,616 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 21:07:53,616 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 21:07:53,616 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 21:07:53,617 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 21:07:53,617 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 21:07:53,617 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 21:07:53,617 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 21:07:53,617 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 21:07:53,618 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 21:07:53,618 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 21:07:53,618 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 21:07:53,618 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 21:07:53,618 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 21:07:53,619 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:07:53,619 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 21:07:53,619 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 21:07:53,619 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 21:07:53,619 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 21:07:53,620 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 21:07:53,620 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 21:07:53,620 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 21:07:53,620 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 21:07:53,620 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 21:07:53,663 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 21:07:53,679 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 21:07:53,682 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 21:07:53,683 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 21:07:53,684 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 21:07:53,684 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label16_true-unreach-call.c [2018-10-24 21:07:53,736 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b5ce9a334/e5ae1a8abc5045e38e9c160ced0c56a3/FLAGfbbad1223 [2018-10-24 21:07:54,419 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 21:07:54,420 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label16_true-unreach-call.c [2018-10-24 21:07:54,436 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b5ce9a334/e5ae1a8abc5045e38e9c160ced0c56a3/FLAGfbbad1223 [2018-10-24 21:07:54,452 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b5ce9a334/e5ae1a8abc5045e38e9c160ced0c56a3 [2018-10-24 21:07:54,464 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 21:07:54,466 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 21:07:54,467 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 21:07:54,467 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 21:07:54,471 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 21:07:54,472 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:07:54" (1/1) ... [2018-10-24 21:07:54,475 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46dcfc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:07:54, skipping insertion in model container [2018-10-24 21:07:54,476 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:07:54" (1/1) ... [2018-10-24 21:07:54,486 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 21:07:54,557 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 21:07:55,236 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:07:55,240 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 21:07:55,397 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:07:55,422 INFO L193 MainTranslator]: Completed translation [2018-10-24 21:07:55,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:07:55 WrapperNode [2018-10-24 21:07:55,423 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 21:07:55,424 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 21:07:55,424 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 21:07:55,424 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 21:07:55,434 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:07:55" (1/1) ... [2018-10-24 21:07:55,467 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:07:55" (1/1) ... [2018-10-24 21:07:55,702 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 21:07:55,703 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 21:07:55,703 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 21:07:55,703 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 21:07:55,714 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:07:55" (1/1) ... [2018-10-24 21:07:55,715 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:07:55" (1/1) ... [2018-10-24 21:07:55,735 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:07:55" (1/1) ... [2018-10-24 21:07:55,735 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:07:55" (1/1) ... [2018-10-24 21:07:55,794 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:07:55" (1/1) ... [2018-10-24 21:07:55,807 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:07:55" (1/1) ... [2018-10-24 21:07:55,826 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:07:55" (1/1) ... [2018-10-24 21:07:55,839 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 21:07:55,840 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 21:07:55,840 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 21:07:55,840 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 21:07:55,841 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:07:55" (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 21:07:55,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 21:07:55,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 21:07:55,915 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 21:07:55,915 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 21:07:55,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 21:07:55,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 21:07:55,917 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 21:07:55,917 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 21:08:00,578 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 21:08:00,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:08:00 BoogieIcfgContainer [2018-10-24 21:08:00,579 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 21:08:00,580 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 21:08:00,581 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 21:08:00,584 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 21:08:00,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:07:54" (1/3) ... [2018-10-24 21:08:00,585 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@431096c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:08:00, skipping insertion in model container [2018-10-24 21:08:00,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:07:55" (2/3) ... [2018-10-24 21:08:00,586 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@431096c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:08:00, skipping insertion in model container [2018-10-24 21:08:00,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:08:00" (3/3) ... [2018-10-24 21:08:00,588 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label16_true-unreach-call.c [2018-10-24 21:08:00,599 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 21:08:00,608 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 21:08:00,626 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 21:08:00,665 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 21:08:00,665 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 21:08:00,665 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 21:08:00,666 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 21:08:00,666 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 21:08:00,666 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 21:08:00,666 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 21:08:00,666 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 21:08:00,701 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-10-24 21:08:00,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-10-24 21:08:00,710 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:08:00,712 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] [2018-10-24 21:08:00,714 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:08:00,719 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:08:00,720 INFO L82 PathProgramCache]: Analyzing trace with hash -328635820, now seen corresponding path program 1 times [2018-10-24 21:08:00,722 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:08:00,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:08:00,771 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:08:00,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:08:00,771 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:08:00,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:08:01,257 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 5 [2018-10-24 21:08:01,284 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 21:08:01,286 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:08:01,286 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 21:08:01,287 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:08:01,294 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 21:08:01,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 21:08:01,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:08:01,317 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-10-24 21:08:04,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:08:04,998 INFO L93 Difference]: Finished difference Result 985 states and 1761 transitions. [2018-10-24 21:08:05,000 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 21:08:05,001 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2018-10-24 21:08:05,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:08:05,026 INFO L225 Difference]: With dead ends: 985 [2018-10-24 21:08:05,026 INFO L226 Difference]: Without dead ends: 686 [2018-10-24 21:08:05,036 INFO L605 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 [2018-10-24 21:08:05,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2018-10-24 21:08:05,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 686. [2018-10-24 21:08:05,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 686 states. [2018-10-24 21:08:05,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 1046 transitions. [2018-10-24 21:08:05,138 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 1046 transitions. Word has length 50 [2018-10-24 21:08:05,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:08:05,139 INFO L481 AbstractCegarLoop]: Abstraction has 686 states and 1046 transitions. [2018-10-24 21:08:05,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 21:08:05,140 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 1046 transitions. [2018-10-24 21:08:05,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-10-24 21:08:05,147 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:08:05,148 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:08:05,148 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:08:05,149 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:08:05,149 INFO L82 PathProgramCache]: Analyzing trace with hash -1947059533, now seen corresponding path program 1 times [2018-10-24 21:08:05,149 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:08:05,151 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:08:05,152 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:08:05,152 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:08:05,152 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:08:05,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:08:05,529 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:08:05,529 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:08:05,529 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:08:05,530 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:08:05,532 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:08:05,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:08:05,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:08:05,533 INFO L87 Difference]: Start difference. First operand 686 states and 1046 transitions. Second operand 6 states. [2018-10-24 21:08:11,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:08:11,503 INFO L93 Difference]: Finished difference Result 2339 states and 3736 transitions. [2018-10-24 21:08:11,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:08:11,507 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 131 [2018-10-24 21:08:11,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:08:11,525 INFO L225 Difference]: With dead ends: 2339 [2018-10-24 21:08:11,525 INFO L226 Difference]: Without dead ends: 1659 [2018-10-24 21:08:11,530 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-24 21:08:11,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1659 states. [2018-10-24 21:08:11,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1659 to 1642. [2018-10-24 21:08:11,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1642 states. [2018-10-24 21:08:11,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1642 states to 1642 states and 2356 transitions. [2018-10-24 21:08:11,617 INFO L78 Accepts]: Start accepts. Automaton has 1642 states and 2356 transitions. Word has length 131 [2018-10-24 21:08:11,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:08:11,618 INFO L481 AbstractCegarLoop]: Abstraction has 1642 states and 2356 transitions. [2018-10-24 21:08:11,619 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:08:11,619 INFO L276 IsEmpty]: Start isEmpty. Operand 1642 states and 2356 transitions. [2018-10-24 21:08:11,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-10-24 21:08:11,627 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:08:11,628 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:08:11,629 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:08:11,629 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:08:11,629 INFO L82 PathProgramCache]: Analyzing trace with hash -1463851825, now seen corresponding path program 1 times [2018-10-24 21:08:11,629 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:08:11,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:08:11,632 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:08:11,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:08:11,632 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:08:11,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:08:11,950 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:08:11,950 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:08:11,951 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 21:08:11,951 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:08:11,952 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 21:08:11,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 21:08:11,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:08:11,952 INFO L87 Difference]: Start difference. First operand 1642 states and 2356 transitions. Second operand 4 states. [2018-10-24 21:08:14,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:08:14,995 INFO L93 Difference]: Finished difference Result 6013 states and 9035 transitions. [2018-10-24 21:08:14,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 21:08:14,996 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 182 [2018-10-24 21:08:14,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:08:15,035 INFO L225 Difference]: With dead ends: 6013 [2018-10-24 21:08:15,035 INFO L226 Difference]: Without dead ends: 4377 [2018-10-24 21:08:15,053 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:08:15,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4377 states. [2018-10-24 21:08:15,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4377 to 4354. [2018-10-24 21:08:15,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4354 states. [2018-10-24 21:08:15,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4354 states to 4354 states and 6089 transitions. [2018-10-24 21:08:15,209 INFO L78 Accepts]: Start accepts. Automaton has 4354 states and 6089 transitions. Word has length 182 [2018-10-24 21:08:15,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:08:15,210 INFO L481 AbstractCegarLoop]: Abstraction has 4354 states and 6089 transitions. [2018-10-24 21:08:15,210 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 21:08:15,210 INFO L276 IsEmpty]: Start isEmpty. Operand 4354 states and 6089 transitions. [2018-10-24 21:08:15,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-10-24 21:08:15,222 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:08:15,223 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, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 21:08:15,223 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:08:15,224 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:08:15,224 INFO L82 PathProgramCache]: Analyzing trace with hash -572064998, now seen corresponding path program 1 times [2018-10-24 21:08:15,224 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:08:15,225 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:08:15,225 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:08:15,226 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:08:15,226 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:08:15,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:08:15,527 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 86 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 21:08:15,528 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:08:15,528 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:08:15,529 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 227 with the following transitions: [2018-10-24 21:08:15,531 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [301], [303], [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], [595], [599], [603], [607], [611], [615], [618], [623], [625], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-24 21:08:15,607 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:08:15,607 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:08:17,481 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:08:19,307 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:08:19,309 INFO L272 AbstractInterpreter]: Visited 106 different actions 106 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-10-24 21:08:19,321 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:08:19,321 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:08:21,981 INFO L232 lantSequenceWeakener]: Weakened 216 states. On average, predicates are now at 73.63% of their original sizes. [2018-10-24 21:08:21,982 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:08:22,500 INFO L413 sIntCurrentIteration]: We have 225 unified AI predicates [2018-10-24 21:08:22,500 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:08:22,501 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:08:22,501 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-24 21:08:22,502 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:08:22,502 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 21:08:22,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 21:08:22,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 21:08:22,503 INFO L87 Difference]: Start difference. First operand 4354 states and 6089 transitions. Second operand 7 states. [2018-10-24 21:08:47,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:08:47,507 INFO L93 Difference]: Finished difference Result 8894 states and 12396 transitions. [2018-10-24 21:08:47,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:08:47,507 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 226 [2018-10-24 21:08:47,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:08:47,535 INFO L225 Difference]: With dead ends: 8894 [2018-10-24 21:08:47,536 INFO L226 Difference]: Without dead ends: 4546 [2018-10-24 21:08:47,554 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 226 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-24 21:08:47,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4546 states. [2018-10-24 21:08:47,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4546 to 4544. [2018-10-24 21:08:47,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4544 states. [2018-10-24 21:08:47,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4544 states to 4544 states and 6289 transitions. [2018-10-24 21:08:47,676 INFO L78 Accepts]: Start accepts. Automaton has 4544 states and 6289 transitions. Word has length 226 [2018-10-24 21:08:47,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:08:47,676 INFO L481 AbstractCegarLoop]: Abstraction has 4544 states and 6289 transitions. [2018-10-24 21:08:47,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 21:08:47,676 INFO L276 IsEmpty]: Start isEmpty. Operand 4544 states and 6289 transitions. [2018-10-24 21:08:47,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2018-10-24 21:08:47,691 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:08:47,691 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 21:08:47,692 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:08:47,692 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:08:47,692 INFO L82 PathProgramCache]: Analyzing trace with hash -1720249895, now seen corresponding path program 1 times [2018-10-24 21:08:47,693 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:08:47,694 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:08:47,694 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:08:47,694 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:08:47,694 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:08:47,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:08:48,095 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2018-10-24 21:08:48,095 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:08:48,095 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 21:08:48,096 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:08:48,096 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 21:08:48,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 21:08:48,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:08:48,097 INFO L87 Difference]: Start difference. First operand 4544 states and 6289 transitions. Second operand 3 states. [2018-10-24 21:08:52,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:08:52,237 INFO L93 Difference]: Finished difference Result 10607 states and 15170 transitions. [2018-10-24 21:08:52,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 21:08:52,240 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 320 [2018-10-24 21:08:52,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:08:52,274 INFO L225 Difference]: With dead ends: 10607 [2018-10-24 21:08:52,274 INFO L226 Difference]: Without dead ends: 6259 [2018-10-24 21:08:52,302 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:08:52,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6259 states. [2018-10-24 21:08:52,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6259 to 6259. [2018-10-24 21:08:52,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6259 states. [2018-10-24 21:08:52,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6259 states to 6259 states and 8415 transitions. [2018-10-24 21:08:52,451 INFO L78 Accepts]: Start accepts. Automaton has 6259 states and 8415 transitions. Word has length 320 [2018-10-24 21:08:52,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:08:52,452 INFO L481 AbstractCegarLoop]: Abstraction has 6259 states and 8415 transitions. [2018-10-24 21:08:52,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 21:08:52,452 INFO L276 IsEmpty]: Start isEmpty. Operand 6259 states and 8415 transitions. [2018-10-24 21:08:52,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2018-10-24 21:08:52,471 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:08:52,471 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:08:52,471 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:08:52,472 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:08:52,472 INFO L82 PathProgramCache]: Analyzing trace with hash 1616066757, now seen corresponding path program 1 times [2018-10-24 21:08:52,472 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:08:52,473 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:08:52,473 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:08:52,473 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:08:52,473 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:08:52,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:08:52,932 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 312 proven. 2 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-10-24 21:08:52,933 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:08:52,933 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:08:52,933 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 354 with the following transitions: [2018-10-24 21:08:52,933 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [301], [303], [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], [578], [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 21:08:52,940 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:08:52,940 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:08:54,952 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:09:11,832 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:09:11,833 INFO L272 AbstractInterpreter]: Visited 126 different actions 366 times. Merged at 5 different actions 10 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-10-24 21:09:11,842 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:09:11,842 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:09:19,412 INFO L232 lantSequenceWeakener]: Weakened 49 states. On average, predicates are now at 76.59% of their original sizes. [2018-10-24 21:09:19,412 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:09:34,611 INFO L413 sIntCurrentIteration]: We have 352 unified AI predicates [2018-10-24 21:09:34,612 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:09:34,612 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:09:34,612 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [6] total 21 [2018-10-24 21:09:34,612 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:09:34,613 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-24 21:09:34,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-24 21:09:34,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2018-10-24 21:09:34,614 INFO L87 Difference]: Start difference. First operand 6259 states and 8415 transitions. Second operand 17 states. Received shutdown request... [2018-10-24 21:11:52,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-24 21:11:52,297 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 21:11:52,302 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 21:11:52,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:11:52 BoogieIcfgContainer [2018-10-24 21:11:52,302 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 21:11:52,303 INFO L168 Benchmark]: Toolchain (without parser) took 237838.47 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 3.7 GB in the end (delta: -2.3 GB). Peak memory consumption was 434.3 MB. Max. memory is 7.1 GB. [2018-10-24 21:11:52,304 INFO L168 Benchmark]: CDTParser took 0.15 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 21:11:52,305 INFO L168 Benchmark]: CACSL2BoogieTranslator took 956.71 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: 55.5 MB). Peak memory consumption was 55.5 MB. Max. memory is 7.1 GB. [2018-10-24 21:11:52,306 INFO L168 Benchmark]: Boogie Procedure Inliner took 278.20 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 747.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -830.6 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2018-10-24 21:11:52,307 INFO L168 Benchmark]: Boogie Preprocessor took 137.20 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 21:11:52,307 INFO L168 Benchmark]: RCFGBuilder took 4739.28 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 187.9 MB). Peak memory consumption was 187.9 MB. Max. memory is 7.1 GB. [2018-10-24 21:11:52,308 INFO L168 Benchmark]: TraceAbstraction took 231721.88 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 2.0 GB). Free memory was 2.0 GB in the beginning and 3.7 GB in the end (delta: -1.7 GB). Peak memory consumption was 274.4 MB. Max. memory is 7.1 GB. [2018-10-24 21:11:52,313 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 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 956.71 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: 55.5 MB). Peak memory consumption was 55.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 278.20 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 747.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -830.6 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 137.20 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 4739.28 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 187.9 MB). Peak memory consumption was 187.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 231721.88 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 2.0 GB). Free memory was 2.0 GB in the beginning and 3.7 GB in the end (delta: -1.7 GB). Peak memory consumption was 274.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 135]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 135). Cancelled while BasicCegarLoop was constructing difference of abstraction (6259states) and FLOYD_HOARE automaton (currently 15 states, 17 states before enhancement),while ReachableStatesComputation was computing reachable states (418 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 231.6s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 179.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1254 SDtfs, 3860 SDslu, 664 SDs, 0 SdLazy, 6358 SolverSat, 1207 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 71.1s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 607 GetRequests, 570 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 17.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6259occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 22.7s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9961922184625827 AbsIntWeakeningRatio, 0.10918544194107452 AbsIntAvgWeakeningVarsNumRemoved, 497.0311958405546 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 5 MinimizatonAttempts, 42 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 1262 NumberOfCodeBlocks, 1262 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1256 ConstructedInterpolants, 0 QuantifiedInterpolants, 749252 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 797/867 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown