java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label06_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 08:28:34,609 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 08:28:34,614 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 08:28:34,628 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 08:28:34,629 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 08:28:34,630 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 08:28:34,631 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 08:28:34,633 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 08:28:34,634 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 08:28:34,635 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 08:28:34,636 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 08:28:34,636 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 08:28:34,637 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 08:28:34,638 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 08:28:34,639 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 08:28:34,640 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 08:28:34,641 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 08:28:34,644 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 08:28:34,646 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 08:28:34,652 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 08:28:34,653 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 08:28:34,659 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 08:28:34,662 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 08:28:34,663 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 08:28:34,663 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 08:28:34,664 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 08:28:34,665 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 08:28:34,666 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 08:28:34,666 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 08:28:34,670 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 08:28:34,671 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 08:28:34,671 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 08:28:34,671 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 08:28:34,672 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 08:28:34,672 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 08:28:34,673 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 08:28:34,674 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-27 08:28:34,702 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 08:28:34,702 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 08:28:34,703 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 08:28:34,703 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 08:28:34,704 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 08:28:34,704 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 08:28:34,704 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-27 08:28:34,704 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 08:28:34,704 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 08:28:34,704 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 08:28:34,705 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 08:28:34,705 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 08:28:34,705 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 08:28:34,705 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 08:28:34,707 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 08:28:34,707 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 08:28:34,707 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 08:28:34,707 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 08:28:34,708 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 08:28:34,709 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 08:28:34,710 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 08:28:34,710 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 08:28:34,710 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 08:28:34,710 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 08:28:34,710 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 08:28:34,711 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 08:28:34,711 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 08:28:34,711 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 08:28:34,711 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 08:28:34,712 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 08:28:34,712 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 08:28:34,712 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 08:28:34,712 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 08:28:34,712 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 08:28:34,713 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 08:28:34,713 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 08:28:34,764 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 08:28:34,777 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 08:28:34,781 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 08:28:34,783 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 08:28:34,783 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 08:28:34,784 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label06_true-unreach-call.c [2018-10-27 08:28:34,847 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c14b731b5/f49c80571458477cb90d44c04786df75/FLAG460c8eb14 [2018-10-27 08:28:35,597 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 08:28:35,598 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label06_true-unreach-call.c [2018-10-27 08:28:35,631 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c14b731b5/f49c80571458477cb90d44c04786df75/FLAG460c8eb14 [2018-10-27 08:28:35,649 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c14b731b5/f49c80571458477cb90d44c04786df75 [2018-10-27 08:28:35,661 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 08:28:35,663 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 08:28:35,664 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 08:28:35,664 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 08:28:35,668 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 08:28:35,669 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:28:35" (1/1) ... [2018-10-27 08:28:35,673 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14b692d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:28:35, skipping insertion in model container [2018-10-27 08:28:35,673 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:28:35" (1/1) ... [2018-10-27 08:28:35,684 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 08:28:35,813 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 08:28:36,906 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 08:28:36,912 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 08:28:37,306 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 08:28:37,330 INFO L193 MainTranslator]: Completed translation [2018-10-27 08:28:37,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:28:37 WrapperNode [2018-10-27 08:28:37,331 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 08:28:37,332 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 08:28:37,332 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 08:28:37,332 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 08:28:37,342 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:28:37" (1/1) ... [2018-10-27 08:28:37,393 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:28:37" (1/1) ... [2018-10-27 08:28:37,796 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 08:28:37,797 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 08:28:37,797 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 08:28:37,798 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 08:28:37,808 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:28:37" (1/1) ... [2018-10-27 08:28:37,809 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:28:37" (1/1) ... [2018-10-27 08:28:37,838 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:28:37" (1/1) ... [2018-10-27 08:28:37,839 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:28:37" (1/1) ... [2018-10-27 08:28:37,940 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:28:37" (1/1) ... [2018-10-27 08:28:37,961 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:28:37" (1/1) ... [2018-10-27 08:28:38,004 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:28:37" (1/1) ... [2018-10-27 08:28:38,053 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 08:28:38,053 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 08:28:38,054 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 08:28:38,054 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 08:28:38,055 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:28:37" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 08:28:38,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 08:28:38,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 08:28:38,126 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 08:28:38,126 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 08:28:38,126 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 08:28:38,126 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 08:28:38,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 08:28:38,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 08:28:38,127 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 08:28:38,127 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 08:28:51,543 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 08:28:51,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:28:51 BoogieIcfgContainer [2018-10-27 08:28:51,544 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 08:28:51,545 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 08:28:51,546 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 08:28:51,549 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 08:28:51,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 08:28:35" (1/3) ... [2018-10-27 08:28:51,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52eb0f7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:28:51, skipping insertion in model container [2018-10-27 08:28:51,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:28:37" (2/3) ... [2018-10-27 08:28:51,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52eb0f7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:28:51, skipping insertion in model container [2018-10-27 08:28:51,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:28:51" (3/3) ... [2018-10-27 08:28:51,553 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label06_true-unreach-call.c [2018-10-27 08:28:51,564 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 08:28:51,574 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 08:28:51,592 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 08:28:51,635 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 08:28:51,636 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 08:28:51,636 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 08:28:51,636 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 08:28:51,636 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 08:28:51,636 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 08:28:51,636 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 08:28:51,637 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 08:28:51,671 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-10-27 08:28:51,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-27 08:28:51,680 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:28:51,681 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] [2018-10-27 08:28:51,684 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:28:51,690 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:28:51,691 INFO L82 PathProgramCache]: Analyzing trace with hash 2116554596, now seen corresponding path program 1 times [2018-10-27 08:28:51,693 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:28:51,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:28:51,753 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:28:51,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:28:51,754 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:28:51,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:28:52,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:28:52,248 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:28:52,249 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 08:28:52,249 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:28:52,255 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 08:28:52,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 08:28:52,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:28:52,274 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-10-27 08:29:06,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:29:06,195 INFO L93 Difference]: Finished difference Result 2137 states and 3966 transitions. [2018-10-27 08:29:06,196 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 08:29:06,198 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2018-10-27 08:29:06,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:29:06,242 INFO L225 Difference]: With dead ends: 2137 [2018-10-27 08:29:06,243 INFO L226 Difference]: Without dead ends: 1527 [2018-10-27 08:29:06,259 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:29:06,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1527 states. [2018-10-27 08:29:06,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1527 to 1513. [2018-10-27 08:29:06,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1513 states. [2018-10-27 08:29:06,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1513 states to 1513 states and 2344 transitions. [2018-10-27 08:29:06,429 INFO L78 Accepts]: Start accepts. Automaton has 1513 states and 2344 transitions. Word has length 38 [2018-10-27 08:29:06,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:29:06,429 INFO L481 AbstractCegarLoop]: Abstraction has 1513 states and 2344 transitions. [2018-10-27 08:29:06,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 08:29:06,430 INFO L276 IsEmpty]: Start isEmpty. Operand 1513 states and 2344 transitions. [2018-10-27 08:29:06,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-10-27 08:29:06,436 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:29:06,437 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:29:06,437 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:29:06,437 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:29:06,437 INFO L82 PathProgramCache]: Analyzing trace with hash 2036710450, now seen corresponding path program 1 times [2018-10-27 08:29:06,438 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:29:06,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:29:06,439 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:29:06,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:29:06,439 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:29:06,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:29:06,811 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:29:06,812 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:29:06,812 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 08:29:06,812 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:29:06,814 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 08:29:06,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 08:29:06,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 08:29:06,815 INFO L87 Difference]: Start difference. First operand 1513 states and 2344 transitions. Second operand 5 states. [2018-10-27 08:29:16,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:29:16,232 INFO L93 Difference]: Finished difference Result 4413 states and 7007 transitions. [2018-10-27 08:29:16,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 08:29:16,240 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2018-10-27 08:29:16,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:29:16,265 INFO L225 Difference]: With dead ends: 4413 [2018-10-27 08:29:16,265 INFO L226 Difference]: Without dead ends: 2906 [2018-10-27 08:29:16,271 INFO L605 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 [2018-10-27 08:29:16,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2906 states. [2018-10-27 08:29:16,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2906 to 2873. [2018-10-27 08:29:16,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2873 states. [2018-10-27 08:29:16,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2873 states to 2873 states and 4204 transitions. [2018-10-27 08:29:16,379 INFO L78 Accepts]: Start accepts. Automaton has 2873 states and 4204 transitions. Word has length 110 [2018-10-27 08:29:16,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:29:16,381 INFO L481 AbstractCegarLoop]: Abstraction has 2873 states and 4204 transitions. [2018-10-27 08:29:16,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 08:29:16,381 INFO L276 IsEmpty]: Start isEmpty. Operand 2873 states and 4204 transitions. [2018-10-27 08:29:16,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-10-27 08:29:16,392 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:29:16,394 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:29:16,394 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:29:16,394 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:29:16,395 INFO L82 PathProgramCache]: Analyzing trace with hash -493194566, now seen corresponding path program 1 times [2018-10-27 08:29:16,395 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:29:16,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:29:16,396 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:29:16,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:29:16,396 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:29:16,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:29:17,270 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:29:17,270 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:29:17,270 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:29:17,272 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 114 with the following transitions: [2018-10-27 08:29:17,274 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [914], [916], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-27 08:29:17,329 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:29:17,329 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:29:18,416 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 08:29:18,418 INFO L272 AbstractInterpreter]: Visited 83 different actions 235 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-27 08:29:18,463 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:29:18,465 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 08:29:18,465 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:29:18,465 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 08:29:18,481 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:29:18,481 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 08:29:18,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:29:18,595 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 08:29:45,405 WARN L179 SmtUtils]: Spent 24.37 s on a formula simplification. DAG size of input: 135 DAG size of output: 98 [2018-10-27 08:30:05,730 WARN L179 SmtUtils]: Spent 16.16 s on a formula simplification. DAG size of input: 98 DAG size of output: 73 [2018-10-27 08:30:06,076 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:30:06,076 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 08:30:10,625 WARN L179 SmtUtils]: Spent 2.07 s on a formula simplification. DAG size of input: 133 DAG size of output: 16 [2018-10-27 08:30:10,690 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 28 [2018-10-27 08:30:13,279 WARN L179 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 26 [2018-10-27 08:30:13,614 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:30:13,656 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-27 08:30:13,657 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 15 [2018-10-27 08:30:13,657 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:30:13,658 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 08:30:13,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 08:30:13,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=160, Unknown=4, NotChecked=0, Total=210 [2018-10-27 08:30:13,664 INFO L87 Difference]: Start difference. First operand 2873 states and 4204 transitions. Second operand 6 states. [2018-10-27 08:30:42,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:30:42,739 INFO L93 Difference]: Finished difference Result 11132 states and 16940 transitions. [2018-10-27 08:30:42,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 08:30:42,742 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 113 [2018-10-27 08:30:42,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:30:42,800 INFO L225 Difference]: With dead ends: 11132 [2018-10-27 08:30:42,801 INFO L226 Difference]: Without dead ends: 8265 [2018-10-27 08:30:42,824 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 220 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 54.7s TimeCoverageRelationStatistics Valid=46, Invalid=160, Unknown=4, NotChecked=0, Total=210 [2018-10-27 08:30:42,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8265 states. [2018-10-27 08:30:43,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8265 to 8227. [2018-10-27 08:30:43,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8227 states. [2018-10-27 08:30:43,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8227 states to 8227 states and 12354 transitions. [2018-10-27 08:30:43,061 INFO L78 Accepts]: Start accepts. Automaton has 8227 states and 12354 transitions. Word has length 113 [2018-10-27 08:30:43,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:30:43,063 INFO L481 AbstractCegarLoop]: Abstraction has 8227 states and 12354 transitions. [2018-10-27 08:30:43,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 08:30:43,064 INFO L276 IsEmpty]: Start isEmpty. Operand 8227 states and 12354 transitions. [2018-10-27 08:30:43,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-10-27 08:30:43,069 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:30:43,070 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:30:43,070 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:30:43,070 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:30:43,071 INFO L82 PathProgramCache]: Analyzing trace with hash -1553350869, now seen corresponding path program 1 times [2018-10-27 08:30:43,071 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:30:43,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:30:43,072 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:30:43,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:30:43,072 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:30:43,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:30:43,641 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:30:43,642 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:30:43,642 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 08:30:43,642 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:30:43,643 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 08:30:43,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 08:30:43,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-27 08:30:43,645 INFO L87 Difference]: Start difference. First operand 8227 states and 12354 transitions. Second operand 6 states. [2018-10-27 08:30:58,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:30:58,934 INFO L93 Difference]: Finished difference Result 26603 states and 41280 transitions. [2018-10-27 08:30:58,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 08:30:58,936 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 183 [2018-10-27 08:30:58,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:30:59,064 INFO L225 Difference]: With dead ends: 26603 [2018-10-27 08:30:59,065 INFO L226 Difference]: Without dead ends: 18382 [2018-10-27 08:30:59,142 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-27 08:30:59,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18382 states. [2018-10-27 08:30:59,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18382 to 18299. [2018-10-27 08:30:59,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18299 states. [2018-10-27 08:30:59,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18299 states to 18299 states and 24932 transitions. [2018-10-27 08:30:59,706 INFO L78 Accepts]: Start accepts. Automaton has 18299 states and 24932 transitions. Word has length 183 [2018-10-27 08:30:59,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:30:59,707 INFO L481 AbstractCegarLoop]: Abstraction has 18299 states and 24932 transitions. [2018-10-27 08:30:59,707 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 08:30:59,707 INFO L276 IsEmpty]: Start isEmpty. Operand 18299 states and 24932 transitions. [2018-10-27 08:30:59,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-10-27 08:30:59,715 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:30:59,715 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 08:30:59,716 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:30:59,716 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:30:59,716 INFO L82 PathProgramCache]: Analyzing trace with hash -1998525290, now seen corresponding path program 1 times [2018-10-27 08:30:59,716 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:30:59,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:30:59,719 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:30:59,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:30:59,719 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:30:59,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:31:00,057 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 08:31:00,497 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 63 proven. 7 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-10-27 08:31:00,497 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:31:00,497 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:31:00,498 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 197 with the following transitions: [2018-10-27 08:31:00,498 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [914], [916], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [1224], [1228], [1232], [1236], [1240], [1244], [1247], [1252], [1254], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-27 08:31:00,505 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:31:00,506 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:31:01,206 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 08:31:01,207 INFO L272 AbstractInterpreter]: Visited 90 different actions 256 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-27 08:31:01,244 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:31:01,245 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 08:31:01,245 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:31:01,245 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 08:31:01,256 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:31:01,256 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 08:31:01,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:31:01,343 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 08:31:01,754 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 135 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:31:01,755 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 08:31:02,713 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 135 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:31:02,748 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 08:31:02,748 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-10-27 08:31:02,749 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 08:31:02,749 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 08:31:02,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 08:31:02,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-10-27 08:31:02,754 INFO L87 Difference]: Start difference. First operand 18299 states and 24932 transitions. Second operand 9 states. [2018-10-27 08:31:13,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:31:13,002 INFO L93 Difference]: Finished difference Result 40639 states and 56436 transitions. [2018-10-27 08:31:13,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-27 08:31:13,005 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 196 [2018-10-27 08:31:13,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:31:13,085 INFO L225 Difference]: With dead ends: 40639 [2018-10-27 08:31:13,085 INFO L226 Difference]: Without dead ends: 22346 [2018-10-27 08:31:13,147 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 390 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2018-10-27 08:31:13,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22346 states. [2018-10-27 08:31:13,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22346 to 22267. [2018-10-27 08:31:13,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22267 states. [2018-10-27 08:31:13,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22267 states to 22267 states and 27134 transitions. [2018-10-27 08:31:13,843 INFO L78 Accepts]: Start accepts. Automaton has 22267 states and 27134 transitions. Word has length 196 [2018-10-27 08:31:13,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:31:13,843 INFO L481 AbstractCegarLoop]: Abstraction has 22267 states and 27134 transitions. [2018-10-27 08:31:13,843 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 08:31:13,843 INFO L276 IsEmpty]: Start isEmpty. Operand 22267 states and 27134 transitions. [2018-10-27 08:31:13,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2018-10-27 08:31:13,849 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:31:13,850 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:31:13,850 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:31:13,850 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:31:13,850 INFO L82 PathProgramCache]: Analyzing trace with hash 1973343696, now seen corresponding path program 1 times [2018-10-27 08:31:13,851 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:31:13,857 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:31:13,858 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:31:13,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:31:13,858 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:31:13,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:31:14,169 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 08:31:14,942 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 89 proven. 39 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-27 08:31:14,942 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:31:14,942 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:31:14,943 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 200 with the following transitions: [2018-10-27 08:31:14,943 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [914], [916], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1215], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-27 08:31:14,951 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:31:14,951 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:31:15,213 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 08:31:15,214 INFO L272 AbstractInterpreter]: Visited 97 different actions 193 times. Merged at 7 different actions 11 times. Never widened. Found 2 fixpoints after 2 different actions. Largest state had 26 variables. [2018-10-27 08:31:15,251 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:31:15,251 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 08:31:15,251 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:31:15,252 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 08:31:15,263 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:31:15,263 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 08:31:15,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:31:15,339 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 08:31:15,453 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-10-27 08:31:15,454 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 08:31:15,664 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-10-27 08:31:15,686 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-27 08:31:15,687 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-10-27 08:31:15,687 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:31:15,687 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 08:31:15,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 08:31:15,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-27 08:31:15,688 INFO L87 Difference]: Start difference. First operand 22267 states and 27134 transitions. Second operand 3 states. [2018-10-27 08:31:21,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:31:21,177 INFO L93 Difference]: Finished difference Result 44964 states and 54900 transitions. [2018-10-27 08:31:21,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 08:31:21,180 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 199 [2018-10-27 08:31:21,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:31:21,242 INFO L225 Difference]: With dead ends: 44964 [2018-10-27 08:31:21,242 INFO L226 Difference]: Without dead ends: 22703 [2018-10-27 08:31:21,302 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 398 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-27 08:31:21,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22703 states. [2018-10-27 08:31:21,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22703 to 21833. [2018-10-27 08:31:21,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21833 states. [2018-10-27 08:31:21,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21833 states to 21833 states and 25861 transitions. [2018-10-27 08:31:21,675 INFO L78 Accepts]: Start accepts. Automaton has 21833 states and 25861 transitions. Word has length 199 [2018-10-27 08:31:21,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:31:21,676 INFO L481 AbstractCegarLoop]: Abstraction has 21833 states and 25861 transitions. [2018-10-27 08:31:21,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 08:31:21,676 INFO L276 IsEmpty]: Start isEmpty. Operand 21833 states and 25861 transitions. [2018-10-27 08:31:21,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2018-10-27 08:31:21,688 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:31:21,688 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:31:21,688 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:31:21,689 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:31:21,689 INFO L82 PathProgramCache]: Analyzing trace with hash -1689262736, now seen corresponding path program 1 times [2018-10-27 08:31:21,689 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:31:21,690 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:31:21,690 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:31:21,690 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:31:21,690 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:31:21,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:31:22,328 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 255 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-10-27 08:31:22,329 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:31:22,329 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:31:22,329 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 299 with the following transitions: [2018-10-27 08:31:22,330 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [914], [916], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1215], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1333], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-27 08:31:22,334 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:31:22,334 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:31:22,820 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 08:31:22,821 INFO L272 AbstractInterpreter]: Visited 109 different actions 220 times. Merged at 8 different actions 14 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 26 variables. [2018-10-27 08:31:22,858 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:31:22,858 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 08:31:22,858 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:31:22,859 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 08:31:22,871 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:31:22,871 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 08:31:22,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:31:22,970 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 08:31:23,160 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 255 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-10-27 08:31:23,161 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 08:31:23,575 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 255 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-10-27 08:31:23,598 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 08:31:23,598 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 8 [2018-10-27 08:31:23,599 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 08:31:23,599 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-27 08:31:23,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-27 08:31:23,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-27 08:31:23,600 INFO L87 Difference]: Start difference. First operand 21833 states and 25861 transitions. Second operand 7 states. [2018-10-27 08:31:37,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:31:37,836 INFO L93 Difference]: Finished difference Result 52576 states and 63670 transitions. [2018-10-27 08:31:37,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-27 08:31:37,837 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 298 [2018-10-27 08:31:37,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:31:37,923 INFO L225 Difference]: With dead ends: 52576 [2018-10-27 08:31:37,923 INFO L226 Difference]: Without dead ends: 30749 [2018-10-27 08:31:37,969 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 611 GetRequests, 597 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2018-10-27 08:31:37,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30749 states. [2018-10-27 08:31:38,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30749 to 29807. [2018-10-27 08:31:38,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29807 states. [2018-10-27 08:31:38,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29807 states to 29807 states and 35280 transitions. [2018-10-27 08:31:38,710 INFO L78 Accepts]: Start accepts. Automaton has 29807 states and 35280 transitions. Word has length 298 [2018-10-27 08:31:38,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:31:38,711 INFO L481 AbstractCegarLoop]: Abstraction has 29807 states and 35280 transitions. [2018-10-27 08:31:38,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-27 08:31:38,711 INFO L276 IsEmpty]: Start isEmpty. Operand 29807 states and 35280 transitions. [2018-10-27 08:31:38,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2018-10-27 08:31:38,738 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:31:38,738 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:31:38,738 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:31:38,738 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:31:38,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1848184147, now seen corresponding path program 1 times [2018-10-27 08:31:38,739 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:31:38,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:31:38,740 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:31:38,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:31:38,740 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:31:38,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:31:39,133 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 266 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-10-27 08:31:39,133 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:31:39,133 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:31:39,134 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 363 with the following transitions: [2018-10-27 08:31:39,134 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [914], [916], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1274], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1600], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-27 08:31:39,146 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:31:39,147 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:31:39,585 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 08:31:39,586 INFO L272 AbstractInterpreter]: Visited 160 different actions 322 times. Merged at 8 different actions 14 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 26 variables. [2018-10-27 08:31:39,621 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:31:39,621 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 08:31:39,621 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:31:39,622 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 08:31:39,629 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:31:39,629 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 08:31:39,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:31:39,746 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 08:31:40,117 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 266 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-10-27 08:31:40,118 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 08:31:40,620 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 266 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-10-27 08:31:40,642 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 08:31:40,642 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-10-27 08:31:40,642 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 08:31:40,643 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-27 08:31:40,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-27 08:31:40,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2018-10-27 08:31:40,643 INFO L87 Difference]: Start difference. First operand 29807 states and 35280 transitions. Second operand 8 states. [2018-10-27 08:32:01,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:32:01,951 INFO L93 Difference]: Finished difference Result 72747 states and 87547 transitions. [2018-10-27 08:32:01,952 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 08:32:01,952 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 362 [2018-10-27 08:32:01,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:32:02,086 INFO L225 Difference]: With dead ends: 72747 [2018-10-27 08:32:02,086 INFO L226 Difference]: Without dead ends: 42946 [2018-10-27 08:32:02,148 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 733 GetRequests, 721 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-10-27 08:32:02,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42946 states. [2018-10-27 08:32:02,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42946 to 42875. [2018-10-27 08:32:02,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42875 states. [2018-10-27 08:32:02,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42875 states to 42875 states and 50943 transitions. [2018-10-27 08:32:02,851 INFO L78 Accepts]: Start accepts. Automaton has 42875 states and 50943 transitions. Word has length 362 [2018-10-27 08:32:02,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:32:02,852 INFO L481 AbstractCegarLoop]: Abstraction has 42875 states and 50943 transitions. [2018-10-27 08:32:02,852 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-27 08:32:02,852 INFO L276 IsEmpty]: Start isEmpty. Operand 42875 states and 50943 transitions. [2018-10-27 08:32:02,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2018-10-27 08:32:02,883 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:32:02,883 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:32:02,884 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:32:02,884 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:32:02,884 INFO L82 PathProgramCache]: Analyzing trace with hash 917551413, now seen corresponding path program 1 times [2018-10-27 08:32:02,884 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:32:02,885 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:32:02,885 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:32:02,885 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:32:02,886 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:32:02,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:32:03,190 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 101 proven. 2 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2018-10-27 08:32:03,190 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:32:03,190 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:32:03,191 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 380 with the following transitions: [2018-10-27 08:32:03,191 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [914], [916], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1274], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1681], [1684], [1688], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-27 08:32:03,196 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:32:03,196 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:32:03,565 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 08:32:03,565 INFO L272 AbstractInterpreter]: Visited 177 different actions 354 times. Merged at 8 different actions 14 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 26 variables. [2018-10-27 08:32:03,603 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:32:03,603 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 08:32:03,603 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:32:03,603 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 08:32:03,616 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:32:03,616 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 08:32:03,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:32:03,734 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 08:32:03,791 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 234 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2018-10-27 08:32:03,791 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 08:32:03,978 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 101 proven. 2 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2018-10-27 08:32:04,231 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-27 08:32:04,231 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 3 [2018-10-27 08:32:04,231 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:32:04,232 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 08:32:04,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 08:32:04,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 08:32:04,233 INFO L87 Difference]: Start difference. First operand 42875 states and 50943 transitions. Second operand 3 states. [2018-10-27 08:32:09,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:32:09,431 INFO L93 Difference]: Finished difference Result 94374 states and 112049 transitions. [2018-10-27 08:32:09,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 08:32:09,432 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 379 [2018-10-27 08:32:09,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:32:09,589 INFO L225 Difference]: With dead ends: 94374 [2018-10-27 08:32:09,589 INFO L226 Difference]: Without dead ends: 51505 [2018-10-27 08:32:09,682 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 760 GetRequests, 759 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 08:32:09,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51505 states. [2018-10-27 08:32:10,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51505 to 50632. [2018-10-27 08:32:10,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50632 states. [2018-10-27 08:32:10,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50632 states to 50632 states and 59352 transitions. [2018-10-27 08:32:10,518 INFO L78 Accepts]: Start accepts. Automaton has 50632 states and 59352 transitions. Word has length 379 [2018-10-27 08:32:10,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:32:10,518 INFO L481 AbstractCegarLoop]: Abstraction has 50632 states and 59352 transitions. [2018-10-27 08:32:10,519 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 08:32:10,519 INFO L276 IsEmpty]: Start isEmpty. Operand 50632 states and 59352 transitions. [2018-10-27 08:32:10,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2018-10-27 08:32:10,549 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:32:10,550 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:32:10,550 INFO L424 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:32:10,550 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:32:10,551 INFO L82 PathProgramCache]: Analyzing trace with hash -1308911778, now seen corresponding path program 1 times [2018-10-27 08:32:10,551 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:32:10,551 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:32:10,552 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:32:10,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:32:10,552 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:32:10,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:32:10,983 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 266 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-10-27 08:32:10,984 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:32:10,984 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:32:10,984 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 388 with the following transitions: [2018-10-27 08:32:10,984 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [914], [916], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1274], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1720], [1723], [1727], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-27 08:32:10,989 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:32:10,989 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:32:11,352 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 08:32:11,352 INFO L272 AbstractInterpreter]: Visited 185 different actions 370 times. Merged at 8 different actions 14 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 26 variables. [2018-10-27 08:32:11,394 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:32:11,395 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 08:32:11,395 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:32:11,395 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 08:32:11,409 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:32:11,409 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 08:32:11,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:32:11,532 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 08:32:11,796 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 266 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-10-27 08:32:11,797 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 08:32:12,755 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 266 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-10-27 08:32:12,778 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 08:32:12,779 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2018-10-27 08:32:12,779 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 08:32:12,780 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-27 08:32:12,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-27 08:32:12,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-10-27 08:32:12,781 INFO L87 Difference]: Start difference. First operand 50632 states and 59352 transitions. Second operand 7 states. [2018-10-27 08:32:35,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:32:35,316 INFO L93 Difference]: Finished difference Result 131065 states and 160271 transitions. [2018-10-27 08:32:35,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-27 08:32:35,317 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 387 [2018-10-27 08:32:35,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:32:35,582 INFO L225 Difference]: With dead ends: 131065 [2018-10-27 08:32:35,582 INFO L226 Difference]: Without dead ends: 74463 [2018-10-27 08:32:35,738 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 791 GetRequests, 777 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2018-10-27 08:32:35,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74463 states. [2018-10-27 08:32:37,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74463 to 72908. [2018-10-27 08:32:37,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72908 states. [2018-10-27 08:32:37,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72908 states to 72908 states and 84754 transitions. [2018-10-27 08:32:37,400 INFO L78 Accepts]: Start accepts. Automaton has 72908 states and 84754 transitions. Word has length 387 [2018-10-27 08:32:37,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:32:37,400 INFO L481 AbstractCegarLoop]: Abstraction has 72908 states and 84754 transitions. [2018-10-27 08:32:37,401 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-27 08:32:37,401 INFO L276 IsEmpty]: Start isEmpty. Operand 72908 states and 84754 transitions. [2018-10-27 08:32:37,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2018-10-27 08:32:37,434 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:32:37,434 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:32:37,435 INFO L424 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:32:37,435 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:32:37,435 INFO L82 PathProgramCache]: Analyzing trace with hash -747703685, now seen corresponding path program 1 times [2018-10-27 08:32:37,435 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:32:37,436 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:32:37,436 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:32:37,436 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:32:37,436 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:32:37,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:32:37,730 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2018-10-27 08:32:37,730 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:32:37,730 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 08:32:37,731 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:32:37,731 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 08:32:37,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 08:32:37,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 08:32:37,732 INFO L87 Difference]: Start difference. First operand 72908 states and 84754 transitions. Second operand 3 states. Received shutdown request... [2018-10-27 08:32:37,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-27 08:32:37,873 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 08:32:37,879 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 08:32:37,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 08:32:37 BoogieIcfgContainer [2018-10-27 08:32:37,880 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 08:32:37,883 INFO L168 Benchmark]: Toolchain (without parser) took 242219.13 ms. Allocated memory was 1.5 GB in the beginning and 3.7 GB in the end (delta: 2.2 GB). Free memory was 1.4 GB in the beginning and 2.7 GB in the end (delta: -1.3 GB). Peak memory consumption was 902.5 MB. Max. memory is 7.1 GB. [2018-10-27 08:32:37,884 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 08:32:37,885 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1666.93 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: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-10-27 08:32:37,886 INFO L168 Benchmark]: Boogie Procedure Inliner took 465.43 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 762.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -914.9 MB). Peak memory consumption was 56.3 MB. Max. memory is 7.1 GB. [2018-10-27 08:32:37,891 INFO L168 Benchmark]: Boogie Preprocessor took 255.88 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 42.8 MB). Peak memory consumption was 42.8 MB. Max. memory is 7.1 GB. [2018-10-27 08:32:37,892 INFO L168 Benchmark]: RCFGBuilder took 13490.91 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.7 GB in the end (delta: 452.6 MB). Peak memory consumption was 452.6 MB. Max. memory is 7.1 GB. [2018-10-27 08:32:37,893 INFO L168 Benchmark]: TraceAbstraction took 226334.51 ms. Allocated memory was 2.3 GB in the beginning and 3.7 GB in the end (delta: 1.4 GB). Free memory was 1.7 GB in the beginning and 2.7 GB in the end (delta: -1.0 GB). Peak memory consumption was 421.7 MB. Max. memory is 7.1 GB. [2018-10-27 08:32:37,898 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 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1666.93 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: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 465.43 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 762.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -914.9 MB). Peak memory consumption was 56.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 255.88 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 42.8 MB). Peak memory consumption was 42.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 13490.91 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.7 GB in the end (delta: 452.6 MB). Peak memory consumption was 452.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 226334.51 ms. Allocated memory was 2.3 GB in the beginning and 3.7 GB in the end (delta: 1.4 GB). Free memory was 1.7 GB in the beginning and 2.7 GB in the end (delta: -1.0 GB). Peak memory consumption was 421.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 101]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 101). Cancelled while BasicCegarLoop was constructing difference of abstraction (72908states) and FLOYD_HOARE automaton (currently 2 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (21 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 226.2s OverallTime, 11 OverallIterations, 4 TraceHistogramMax, 148.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3207 SDtfs, 20646 SDslu, 2776 SDs, 0 SdLazy, 33069 SolverSat, 8988 SolverUnsat, 11 SolverUnknown, 0 SolverNotchecked, 133.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3976 GetRequests, 3875 SyntacticMatches, 16 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 59.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=72908occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 4.0s AbstIntTime, 7 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 6.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 4558 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 64.6s InterpolantComputationTime, 4615 NumberOfCodeBlocks, 4615 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 6524 ConstructedInterpolants, 112 QuantifiedInterpolants, 5013574 SizeOfPredicates, 11 NumberOfNonLiveVariables, 3408 ConjunctsInSsa, 31 ConjunctsInUnsatCore, 25 InterpolantComputations, 8 PerfectInterpolantSequences, 5367/5497 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown