java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label07_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 08:58:15,717 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 08:58:15,720 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 08:58:15,734 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 08:58:15,735 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 08:58:15,736 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 08:58:15,737 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 08:58:15,741 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 08:58:15,744 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 08:58:15,745 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 08:58:15,753 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 08:58:15,753 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 08:58:15,754 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 08:58:15,755 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 08:58:15,758 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 08:58:15,759 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 08:58:15,761 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 08:58:15,764 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 08:58:15,768 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 08:58:15,769 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 08:58:15,770 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 08:58:15,776 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 08:58:15,780 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 08:58:15,780 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 08:58:15,781 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 08:58:15,781 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 08:58:15,784 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 08:58:15,786 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 08:58:15,787 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 08:58:15,787 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 08:58:15,789 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 08:58:15,790 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 08:58:15,790 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 08:58:15,792 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 08:58:15,793 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 08:58:15,794 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 08:58:15,795 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-11-07 08:58:15,820 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 08:58:15,820 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 08:58:15,821 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 08:58:15,822 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 08:58:15,822 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 08:58:15,822 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 08:58:15,822 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 08:58:15,822 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 08:58:15,823 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 08:58:15,823 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 08:58:15,823 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 08:58:15,823 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 08:58:15,823 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 08:58:15,823 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 08:58:15,824 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 08:58:15,825 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 08:58:15,825 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 08:58:15,825 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 08:58:15,825 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 08:58:15,825 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 08:58:15,825 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 08:58:15,827 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 08:58:15,827 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 08:58:15,828 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 08:58:15,828 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 08:58:15,828 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 08:58:15,828 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 08:58:15,828 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 08:58:15,829 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 08:58:15,829 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 08:58:15,829 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 08:58:15,829 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 08:58:15,829 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 08:58:15,830 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 08:58:15,830 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 08:58:15,830 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 08:58:15,877 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 08:58:15,890 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 08:58:15,894 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 08:58:15,895 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 08:58:15,896 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 08:58:15,897 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label07_true-unreach-call_false-termination.c [2018-11-07 08:58:15,960 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f9372d11/81a05b62c24e4a659e6bcd78012e75bf/FLAG561f0819a [2018-11-07 08:58:16,618 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 08:58:16,619 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label07_true-unreach-call_false-termination.c [2018-11-07 08:58:16,633 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f9372d11/81a05b62c24e4a659e6bcd78012e75bf/FLAG561f0819a [2018-11-07 08:58:16,650 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f9372d11/81a05b62c24e4a659e6bcd78012e75bf [2018-11-07 08:58:16,662 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 08:58:16,664 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 08:58:16,665 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 08:58:16,665 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 08:58:16,670 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 08:58:16,671 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:58:16" (1/1) ... [2018-11-07 08:58:16,675 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5296c9ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:58:16, skipping insertion in model container [2018-11-07 08:58:16,675 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:58:16" (1/1) ... [2018-11-07 08:58:16,686 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 08:58:16,757 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 08:58:17,377 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 08:58:17,382 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 08:58:17,582 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 08:58:17,604 INFO L193 MainTranslator]: Completed translation [2018-11-07 08:58:17,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:58:17 WrapperNode [2018-11-07 08:58:17,605 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 08:58:17,606 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 08:58:17,606 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 08:58:17,606 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 08:58:17,617 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:58:17" (1/1) ... [2018-11-07 08:58:17,739 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:58:17" (1/1) ... [2018-11-07 08:58:17,754 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 08:58:17,755 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 08:58:17,755 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 08:58:17,755 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 08:58:17,765 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:58:17" (1/1) ... [2018-11-07 08:58:17,765 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:58:17" (1/1) ... [2018-11-07 08:58:17,772 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:58:17" (1/1) ... [2018-11-07 08:58:17,773 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:58:17" (1/1) ... [2018-11-07 08:58:17,837 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:58:17" (1/1) ... [2018-11-07 08:58:17,854 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:58:17" (1/1) ... [2018-11-07 08:58:17,869 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:58:17" (1/1) ... [2018-11-07 08:58:17,883 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 08:58:17,884 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 08:58:17,884 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 08:58:17,884 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 08:58:17,887 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:58:17" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 08:58:17,954 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 08:58:17,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 08:58:17,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 08:58:17,955 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 08:58:17,955 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 08:58:17,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 08:58:17,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 08:58:17,955 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 08:58:17,956 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 08:58:21,640 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 08:58:21,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:58:21 BoogieIcfgContainer [2018-11-07 08:58:21,641 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 08:58:21,642 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 08:58:21,642 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 08:58:21,645 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 08:58:21,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:58:16" (1/3) ... [2018-11-07 08:58:21,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6aefc70d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:58:21, skipping insertion in model container [2018-11-07 08:58:21,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:58:17" (2/3) ... [2018-11-07 08:58:21,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6aefc70d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:58:21, skipping insertion in model container [2018-11-07 08:58:21,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:58:21" (3/3) ... [2018-11-07 08:58:21,649 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label07_true-unreach-call_false-termination.c [2018-11-07 08:58:21,660 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 08:58:21,669 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 08:58:21,688 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 08:58:21,730 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 08:58:21,730 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 08:58:21,730 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 08:58:21,731 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 08:58:21,731 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 08:58:21,731 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 08:58:21,731 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 08:58:21,732 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 08:58:21,761 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-11-07 08:58:21,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-11-07 08:58:21,770 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:58:21,771 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 08:58:21,773 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:58:21,779 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:58:21,779 INFO L82 PathProgramCache]: Analyzing trace with hash -989245532, now seen corresponding path program 1 times [2018-11-07 08:58:21,781 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:58:21,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:58:21,828 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:58:21,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:58:21,828 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:58:21,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:58:22,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:58:22,300 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:58:22,300 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 08:58:22,301 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:58:22,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 08:58:22,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 08:58:22,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 08:58:22,326 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 4 states. [2018-11-07 08:58:25,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:58:25,030 INFO L93 Difference]: Finished difference Result 894 states and 1610 transitions. [2018-11-07 08:58:25,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 08:58:25,034 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2018-11-07 08:58:25,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:58:25,056 INFO L225 Difference]: With dead ends: 894 [2018-11-07 08:58:25,057 INFO L226 Difference]: Without dead ends: 633 [2018-11-07 08:58:25,065 INFO L604 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 [2018-11-07 08:58:25,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2018-11-07 08:58:25,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 434. [2018-11-07 08:58:25,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-11-07 08:58:25,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 662 transitions. [2018-11-07 08:58:25,152 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 662 transitions. Word has length 54 [2018-11-07 08:58:25,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:58:25,153 INFO L480 AbstractCegarLoop]: Abstraction has 434 states and 662 transitions. [2018-11-07 08:58:25,153 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 08:58:25,154 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 662 transitions. [2018-11-07 08:58:25,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-11-07 08:58:25,162 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:58:25,162 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 08:58:25,163 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:58:25,163 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:58:25,163 INFO L82 PathProgramCache]: Analyzing trace with hash 1614354860, now seen corresponding path program 1 times [2018-11-07 08:58:25,163 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:58:25,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:58:25,165 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:58:25,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:58:25,165 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:58:25,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:58:25,498 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:58:25,498 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:58:25,498 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 08:58:25,500 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:58:25,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 08:58:25,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 08:58:25,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 08:58:25,504 INFO L87 Difference]: Start difference. First operand 434 states and 662 transitions. Second operand 4 states. [2018-11-07 08:58:28,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:58:28,103 INFO L93 Difference]: Finished difference Result 1594 states and 2533 transitions. [2018-11-07 08:58:28,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 08:58:28,104 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 138 [2018-11-07 08:58:28,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:58:28,112 INFO L225 Difference]: With dead ends: 1594 [2018-11-07 08:58:28,112 INFO L226 Difference]: Without dead ends: 780 [2018-11-07 08:58:28,120 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 08:58:28,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2018-11-07 08:58:28,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 780. [2018-11-07 08:58:28,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 780 states. [2018-11-07 08:58:28,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 1152 transitions. [2018-11-07 08:58:28,179 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 1152 transitions. Word has length 138 [2018-11-07 08:58:28,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:58:28,180 INFO L480 AbstractCegarLoop]: Abstraction has 780 states and 1152 transitions. [2018-11-07 08:58:28,180 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 08:58:28,180 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 1152 transitions. [2018-11-07 08:58:28,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-11-07 08:58:28,196 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:58:28,196 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 08:58:28,197 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:58:28,197 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:58:28,197 INFO L82 PathProgramCache]: Analyzing trace with hash 1391925776, now seen corresponding path program 1 times [2018-11-07 08:58:28,197 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:58:28,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:58:28,199 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:58:28,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:58:28,199 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:58:28,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:58:28,558 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-11-07 08:58:28,558 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:58:28,558 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 08:58:28,559 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:58:28,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 08:58:28,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 08:58:28,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 08:58:28,565 INFO L87 Difference]: Start difference. First operand 780 states and 1152 transitions. Second operand 4 states. [2018-11-07 08:58:31,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:58:31,192 INFO L93 Difference]: Finished difference Result 3018 states and 4610 transitions. [2018-11-07 08:58:31,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 08:58:31,199 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 224 [2018-11-07 08:58:31,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:58:31,217 INFO L225 Difference]: With dead ends: 3018 [2018-11-07 08:58:31,217 INFO L226 Difference]: Without dead ends: 2244 [2018-11-07 08:58:31,228 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 08:58:31,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2244 states. [2018-11-07 08:58:31,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2244 to 2244. [2018-11-07 08:58:31,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2244 states. [2018-11-07 08:58:31,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2244 states to 2244 states and 3149 transitions. [2018-11-07 08:58:31,319 INFO L78 Accepts]: Start accepts. Automaton has 2244 states and 3149 transitions. Word has length 224 [2018-11-07 08:58:31,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:58:31,321 INFO L480 AbstractCegarLoop]: Abstraction has 2244 states and 3149 transitions. [2018-11-07 08:58:31,321 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 08:58:31,321 INFO L276 IsEmpty]: Start isEmpty. Operand 2244 states and 3149 transitions. [2018-11-07 08:58:31,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2018-11-07 08:58:31,337 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:58:31,337 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 08:58:31,337 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:58:31,338 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:58:31,338 INFO L82 PathProgramCache]: Analyzing trace with hash -1136291269, now seen corresponding path program 1 times [2018-11-07 08:58:31,338 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:58:31,339 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:58:31,339 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:58:31,339 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:58:31,341 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:58:31,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:58:31,854 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 94 proven. 108 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 08:58:31,855 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:58:31,855 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 08:58:31,856 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 320 with the following transitions: [2018-11-07 08:58:31,858 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [333], [335], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [666], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [822], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 08:58:31,909 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 08:58:31,909 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 08:58:36,548 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 08:58:36,550 INFO L272 AbstractInterpreter]: Visited 157 different actions 157 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 08:58:36,596 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:58:36,597 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 08:58:39,841 INFO L227 lantSequenceWeakener]: Weakened 310 states. On average, predicates are now at 77.83% of their original sizes. [2018-11-07 08:58:39,841 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 08:58:40,098 INFO L415 sIntCurrentIteration]: We unified 318 AI predicates to 318 [2018-11-07 08:58:40,098 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 08:58:40,099 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 08:58:40,100 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2018-11-07 08:58:40,100 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:58:40,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 08:58:40,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 08:58:40,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 08:58:40,101 INFO L87 Difference]: Start difference. First operand 2244 states and 3149 transitions. Second operand 6 states. [2018-11-07 08:58:50,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:58:50,574 INFO L93 Difference]: Finished difference Result 4667 states and 6526 transitions. [2018-11-07 08:58:50,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 08:58:50,574 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 319 [2018-11-07 08:58:50,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:58:50,591 INFO L225 Difference]: With dead ends: 4667 [2018-11-07 08:58:50,591 INFO L226 Difference]: Without dead ends: 2429 [2018-11-07 08:58:50,606 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 319 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-07 08:58:50,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2429 states. [2018-11-07 08:58:50,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2429 to 2427. [2018-11-07 08:58:50,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2427 states. [2018-11-07 08:58:50,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2427 states to 2427 states and 3340 transitions. [2018-11-07 08:58:50,677 INFO L78 Accepts]: Start accepts. Automaton has 2427 states and 3340 transitions. Word has length 319 [2018-11-07 08:58:50,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:58:50,677 INFO L480 AbstractCegarLoop]: Abstraction has 2427 states and 3340 transitions. [2018-11-07 08:58:50,678 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 08:58:50,678 INFO L276 IsEmpty]: Start isEmpty. Operand 2427 states and 3340 transitions. [2018-11-07 08:58:50,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2018-11-07 08:58:50,695 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:58:50,696 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 08:58:50,696 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:58:50,697 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:58:50,697 INFO L82 PathProgramCache]: Analyzing trace with hash 2012329804, now seen corresponding path program 1 times [2018-11-07 08:58:50,697 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:58:50,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:58:50,699 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:58:50,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:58:50,699 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:58:50,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:58:51,266 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 08:58:51,456 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-07 08:58:52,267 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 229 proven. 190 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 08:58:52,268 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:58:52,268 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 08:58:52,268 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 405 with the following transitions: [2018-11-07 08:58:52,269 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [333], [335], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [666], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [822], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 08:58:52,277 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 08:58:52,277 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 08:58:56,294 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 08:58:56,294 INFO L272 AbstractInterpreter]: Visited 161 different actions 315 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 08:58:56,336 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:58:56,336 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 08:58:58,672 INFO L227 lantSequenceWeakener]: Weakened 401 states. On average, predicates are now at 77.77% of their original sizes. [2018-11-07 08:58:58,673 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 08:58:59,440 INFO L415 sIntCurrentIteration]: We unified 403 AI predicates to 403 [2018-11-07 08:58:59,441 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 08:58:59,441 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 08:58:59,441 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [12] total 20 [2018-11-07 08:58:59,442 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:58:59,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 08:58:59,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 08:58:59,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-11-07 08:58:59,443 INFO L87 Difference]: Start difference. First operand 2427 states and 3340 transitions. Second operand 10 states. [2018-11-07 08:59:59,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:59:59,297 INFO L93 Difference]: Finished difference Result 5408 states and 7353 transitions. [2018-11-07 08:59:59,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-07 08:59:59,297 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 404 [2018-11-07 08:59:59,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:59:59,315 INFO L225 Difference]: With dead ends: 5408 [2018-11-07 08:59:59,315 INFO L226 Difference]: Without dead ends: 2800 [2018-11-07 08:59:59,327 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 412 GetRequests, 395 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2018-11-07 08:59:59,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2800 states. [2018-11-07 08:59:59,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2800 to 2798. [2018-11-07 08:59:59,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2798 states. [2018-11-07 08:59:59,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2798 states to 2798 states and 3744 transitions. [2018-11-07 08:59:59,398 INFO L78 Accepts]: Start accepts. Automaton has 2798 states and 3744 transitions. Word has length 404 [2018-11-07 08:59:59,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:59:59,398 INFO L480 AbstractCegarLoop]: Abstraction has 2798 states and 3744 transitions. [2018-11-07 08:59:59,398 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 08:59:59,398 INFO L276 IsEmpty]: Start isEmpty. Operand 2798 states and 3744 transitions. [2018-11-07 08:59:59,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2018-11-07 08:59:59,419 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:59:59,420 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 08:59:59,420 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:59:59,420 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:59:59,421 INFO L82 PathProgramCache]: Analyzing trace with hash -356180380, now seen corresponding path program 1 times [2018-11-07 08:59:59,421 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:59:59,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:59:59,422 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:59:59,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:59:59,422 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:59:59,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:00:00,390 INFO L134 CoverageAnalysis]: Checked inductivity of 745 backedges. 386 proven. 250 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-11-07 09:00:00,391 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:00:00,391 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:00:00,391 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 505 with the following transitions: [2018-11-07 09:00:00,392 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [333], [335], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [658], [659], [663], [666], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [822], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 09:00:00,397 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:00:00,398 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:00:04,245 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 09:00:04,245 INFO L272 AbstractInterpreter]: Visited 162 different actions 318 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 09:00:04,276 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:00:04,276 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 09:00:06,635 INFO L227 lantSequenceWeakener]: Weakened 501 states. On average, predicates are now at 77.7% of their original sizes. [2018-11-07 09:00:06,636 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 09:00:06,743 INFO L415 sIntCurrentIteration]: We unified 503 AI predicates to 503 [2018-11-07 09:00:06,744 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 09:00:06,744 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:00:06,744 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [14] total 22 [2018-11-07 09:00:06,744 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:00:06,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 09:00:06,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 09:00:06,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-11-07 09:00:06,746 INFO L87 Difference]: Start difference. First operand 2798 states and 3744 transitions. Second operand 10 states. [2018-11-07 09:00:30,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:00:30,074 INFO L93 Difference]: Finished difference Result 5224 states and 7100 transitions. [2018-11-07 09:00:30,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-07 09:00:30,074 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 504 [2018-11-07 09:00:30,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:00:30,087 INFO L225 Difference]: With dead ends: 5224 [2018-11-07 09:00:30,088 INFO L226 Difference]: Without dead ends: 2615 [2018-11-07 09:00:30,100 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 511 GetRequests, 495 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2018-11-07 09:00:30,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2615 states. [2018-11-07 09:00:30,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2615 to 2612. [2018-11-07 09:00:30,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2612 states. [2018-11-07 09:00:30,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2612 states to 2612 states and 3522 transitions. [2018-11-07 09:00:30,162 INFO L78 Accepts]: Start accepts. Automaton has 2612 states and 3522 transitions. Word has length 504 [2018-11-07 09:00:30,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:00:30,163 INFO L480 AbstractCegarLoop]: Abstraction has 2612 states and 3522 transitions. [2018-11-07 09:00:30,163 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 09:00:30,163 INFO L276 IsEmpty]: Start isEmpty. Operand 2612 states and 3522 transitions. [2018-11-07 09:00:30,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2018-11-07 09:00:30,184 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:00:30,185 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 09:00:30,185 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:00:30,185 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:00:30,186 INFO L82 PathProgramCache]: Analyzing trace with hash 1011924707, now seen corresponding path program 1 times [2018-11-07 09:00:30,186 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:00:30,187 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:00:30,187 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:00:30,187 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:00:30,187 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:00:30,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:00:30,614 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-11-07 09:00:31,409 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 336 proven. 285 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2018-11-07 09:00:31,409 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:00:31,409 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:00:31,410 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 508 with the following transitions: [2018-11-07 09:00:31,410 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [333], [335], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [534], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [822], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 09:00:31,420 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:00:31,420 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:00:36,274 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 09:00:36,274 INFO L272 AbstractInterpreter]: Visited 162 different actions 485 times. Merged at 7 different actions 21 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-07 09:00:36,282 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:00:36,282 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 09:00:37,254 INFO L227 lantSequenceWeakener]: Weakened 504 states. On average, predicates are now at 80.39% of their original sizes. [2018-11-07 09:00:37,254 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 09:00:37,336 INFO L415 sIntCurrentIteration]: We unified 506 AI predicates to 506 [2018-11-07 09:00:37,337 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 09:00:37,337 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:00:37,337 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [7] total 14 [2018-11-07 09:00:37,337 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:00:37,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 09:00:37,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 09:00:37,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-11-07 09:00:37,338 INFO L87 Difference]: Start difference. First operand 2612 states and 3522 transitions. Second operand 9 states. [2018-11-07 09:01:00,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:01:00,213 INFO L93 Difference]: Finished difference Result 5943 states and 8291 transitions. [2018-11-07 09:01:00,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-07 09:01:00,213 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 507 [2018-11-07 09:01:00,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:01:00,230 INFO L225 Difference]: With dead ends: 5943 [2018-11-07 09:01:00,230 INFO L226 Difference]: Without dead ends: 3705 [2018-11-07 09:01:00,243 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 513 GetRequests, 499 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2018-11-07 09:01:00,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3705 states. [2018-11-07 09:01:00,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3705 to 3684. [2018-11-07 09:01:00,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3684 states. [2018-11-07 09:01:00,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3684 states to 3684 states and 4834 transitions. [2018-11-07 09:01:00,344 INFO L78 Accepts]: Start accepts. Automaton has 3684 states and 4834 transitions. Word has length 507 [2018-11-07 09:01:00,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:01:00,345 INFO L480 AbstractCegarLoop]: Abstraction has 3684 states and 4834 transitions. [2018-11-07 09:01:00,345 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 09:01:00,345 INFO L276 IsEmpty]: Start isEmpty. Operand 3684 states and 4834 transitions. [2018-11-07 09:01:00,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 614 [2018-11-07 09:01:00,366 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:01:00,367 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:01:00,367 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:01:00,367 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:01:00,368 INFO L82 PathProgramCache]: Analyzing trace with hash 767629283, now seen corresponding path program 1 times [2018-11-07 09:01:00,368 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:01:00,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:01:00,370 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:01:00,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:01:00,370 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:01:00,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:01:01,567 INFO L134 CoverageAnalysis]: Checked inductivity of 1192 backedges. 554 proven. 458 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2018-11-07 09:01:01,568 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:01:01,568 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:01:01,568 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 614 with the following transitions: [2018-11-07 09:01:01,568 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [333], [335], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [506], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [666], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [822], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 09:01:01,572 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:01:01,572 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:01:11,337 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:01:11,338 INFO L272 AbstractInterpreter]: Visited 164 different actions 650 times. Merged at 8 different actions 30 times. Never widened. Found 8 fixpoints after 5 different actions. Largest state had 24 variables. [2018-11-07 09:01:11,346 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:01:11,347 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:01:11,347 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:01:11,348 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-07 09:01:11,357 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:01:11,357 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:01:11,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:01:11,546 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:01:12,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1192 backedges. 892 proven. 2 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2018-11-07 09:01:12,206 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:01:13,507 INFO L134 CoverageAnalysis]: Checked inductivity of 1192 backedges. 548 proven. 112 refuted. 0 times theorem prover too weak. 532 trivial. 0 not checked. [2018-11-07 09:01:13,529 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:01:13,529 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5] total 19 [2018-11-07 09:01:13,530 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:01:13,531 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-07 09:01:13,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-07 09:01:13,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2018-11-07 09:01:13,534 INFO L87 Difference]: Start difference. First operand 3684 states and 4834 transitions. Second operand 17 states. [2018-11-07 09:01:21,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:01:21,587 INFO L93 Difference]: Finished difference Result 8467 states and 11545 transitions. [2018-11-07 09:01:21,591 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-11-07 09:01:21,591 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 613 [2018-11-07 09:01:21,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:01:21,621 INFO L225 Difference]: With dead ends: 8467 [2018-11-07 09:01:21,621 INFO L226 Difference]: Without dead ends: 3994 [2018-11-07 09:01:21,658 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1284 GetRequests, 1237 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 577 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=521, Invalid=1735, Unknown=0, NotChecked=0, Total=2256 [2018-11-07 09:01:21,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3994 states. [2018-11-07 09:01:21,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3994 to 3527. [2018-11-07 09:01:21,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3527 states. [2018-11-07 09:01:21,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3527 states to 3527 states and 4081 transitions. [2018-11-07 09:01:21,788 INFO L78 Accepts]: Start accepts. Automaton has 3527 states and 4081 transitions. Word has length 613 [2018-11-07 09:01:21,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:01:21,789 INFO L480 AbstractCegarLoop]: Abstraction has 3527 states and 4081 transitions. [2018-11-07 09:01:21,789 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-07 09:01:21,789 INFO L276 IsEmpty]: Start isEmpty. Operand 3527 states and 4081 transitions. [2018-11-07 09:01:21,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 688 [2018-11-07 09:01:21,811 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:01:21,812 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 09:01:21,812 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:01:21,812 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:01:21,813 INFO L82 PathProgramCache]: Analyzing trace with hash -1652295509, now seen corresponding path program 1 times [2018-11-07 09:01:21,813 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:01:21,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:01:21,814 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:01:21,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:01:21,814 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:01:21,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:01:22,570 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-11-07 09:01:23,298 WARN L179 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-11-07 09:01:24,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1259 backedges. 479 proven. 513 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2018-11-07 09:01:24,379 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:01:24,379 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:01:24,380 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 688 with the following transitions: [2018-11-07 09:01:24,380 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [333], [335], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [534], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [822], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 09:01:24,384 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:01:24,384 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:01:30,749 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:01:30,750 INFO L272 AbstractInterpreter]: Visited 192 different actions 767 times. Merged at 10 different actions 35 times. Widened at 1 different actions 1 times. Found 8 fixpoints after 4 different actions. Largest state had 24 variables. [2018-11-07 09:01:30,759 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:01:30,759 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:01:30,759 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:01:30,759 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-07 09:01:30,768 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:01:30,769 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:01:30,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:01:30,942 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:01:31,490 INFO L134 CoverageAnalysis]: Checked inductivity of 1259 backedges. 974 proven. 2 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2018-11-07 09:01:31,490 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:01:32,283 INFO L134 CoverageAnalysis]: Checked inductivity of 1259 backedges. 477 proven. 228 refuted. 0 times theorem prover too weak. 554 trivial. 0 not checked. [2018-11-07 09:01:32,304 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:01:32,304 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 6, 6] total 20 [2018-11-07 09:01:32,304 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:01:32,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-07 09:01:32,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-07 09:01:32,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2018-11-07 09:01:32,306 INFO L87 Difference]: Start difference. First operand 3527 states and 4081 transitions. Second operand 17 states. [2018-11-07 09:01:34,281 WARN L179 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 25 [2018-11-07 09:01:37,758 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2018-11-07 09:01:37,922 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 50 [2018-11-07 09:01:38,601 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2018-11-07 09:01:39,006 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 38 [2018-11-07 09:01:39,276 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2018-11-07 09:01:42,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:01:42,214 INFO L93 Difference]: Finished difference Result 10146 states and 12667 transitions. [2018-11-07 09:01:42,215 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-11-07 09:01:42,215 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 687 [2018-11-07 09:01:42,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:01:42,254 INFO L225 Difference]: With dead ends: 10146 [2018-11-07 09:01:42,254 INFO L226 Difference]: Without dead ends: 6993 [2018-11-07 09:01:42,273 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1470 GetRequests, 1406 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1203 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=883, Invalid=3407, Unknown=0, NotChecked=0, Total=4290 [2018-11-07 09:01:42,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6993 states. [2018-11-07 09:01:42,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6993 to 6862. [2018-11-07 09:01:42,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6862 states. [2018-11-07 09:01:42,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6862 states to 6862 states and 7965 transitions. [2018-11-07 09:01:42,472 INFO L78 Accepts]: Start accepts. Automaton has 6862 states and 7965 transitions. Word has length 687 [2018-11-07 09:01:42,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:01:42,473 INFO L480 AbstractCegarLoop]: Abstraction has 6862 states and 7965 transitions. [2018-11-07 09:01:42,473 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-07 09:01:42,473 INFO L276 IsEmpty]: Start isEmpty. Operand 6862 states and 7965 transitions. [2018-11-07 09:01:42,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 806 [2018-11-07 09:01:42,503 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:01:42,504 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:01:42,504 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:01:42,504 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:01:42,504 INFO L82 PathProgramCache]: Analyzing trace with hash -1733960817, now seen corresponding path program 1 times [2018-11-07 09:01:42,505 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:01:42,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:01:42,505 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:01:42,506 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:01:42,506 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:01:42,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:01:43,783 INFO L134 CoverageAnalysis]: Checked inductivity of 1843 backedges. 655 proven. 228 refuted. 0 times theorem prover too weak. 960 trivial. 0 not checked. [2018-11-07 09:01:43,784 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:01:43,784 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:01:43,784 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 806 with the following transitions: [2018-11-07 09:01:43,785 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [333], [335], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [534], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [686], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [822], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 09:01:43,787 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:01:43,787 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:01:49,452 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:01:49,452 INFO L272 AbstractInterpreter]: Visited 193 different actions 774 times. Merged at 10 different actions 38 times. Widened at 1 different actions 1 times. Found 10 fixpoints after 5 different actions. Largest state had 24 variables. [2018-11-07 09:01:49,460 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:01:49,460 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:01:49,460 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:01:49,460 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-07 09:01:49,470 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:01:49,471 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:01:49,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:01:49,679 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:01:50,289 INFO L134 CoverageAnalysis]: Checked inductivity of 1843 backedges. 1340 proven. 2 refuted. 0 times theorem prover too weak. 501 trivial. 0 not checked. [2018-11-07 09:01:50,290 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:01:51,425 INFO L134 CoverageAnalysis]: Checked inductivity of 1843 backedges. 655 proven. 228 refuted. 0 times theorem prover too weak. 960 trivial. 0 not checked. [2018-11-07 09:01:51,447 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:01:51,447 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2018-11-07 09:01:51,447 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:01:51,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 09:01:51,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 09:01:51,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-11-07 09:01:51,449 INFO L87 Difference]: Start difference. First operand 6862 states and 7965 transitions. Second operand 7 states. [2018-11-07 09:01:53,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:01:53,967 INFO L93 Difference]: Finished difference Result 18858 states and 26437 transitions. [2018-11-07 09:01:53,970 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-07 09:01:53,970 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 805 [2018-11-07 09:01:53,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:01:54,067 INFO L225 Difference]: With dead ends: 18858 [2018-11-07 09:01:54,067 INFO L226 Difference]: Without dead ends: 12370 [2018-11-07 09:01:54,124 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1624 GetRequests, 1611 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2018-11-07 09:01:54,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12370 states. [2018-11-07 09:01:54,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12370 to 11539. [2018-11-07 09:01:54,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11539 states. [2018-11-07 09:01:54,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11539 states to 11539 states and 13889 transitions. [2018-11-07 09:01:54,530 INFO L78 Accepts]: Start accepts. Automaton has 11539 states and 13889 transitions. Word has length 805 [2018-11-07 09:01:54,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:01:54,532 INFO L480 AbstractCegarLoop]: Abstraction has 11539 states and 13889 transitions. [2018-11-07 09:01:54,532 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 09:01:54,532 INFO L276 IsEmpty]: Start isEmpty. Operand 11539 states and 13889 transitions. [2018-11-07 09:01:54,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 851 [2018-11-07 09:01:54,576 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:01:54,577 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2018-11-07 09:01:54,577 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:01:54,578 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:01:54,578 INFO L82 PathProgramCache]: Analyzing trace with hash -759808128, now seen corresponding path program 1 times [2018-11-07 09:01:54,578 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:01:54,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:01:54,579 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:01:54,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:01:54,579 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:01:54,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:01:57,121 INFO L134 CoverageAnalysis]: Checked inductivity of 1922 backedges. 654 proven. 893 refuted. 0 times theorem prover too weak. 375 trivial. 0 not checked. [2018-11-07 09:01:57,121 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:01:57,121 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:01:57,122 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 851 with the following transitions: [2018-11-07 09:01:57,122 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [333], [335], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [534], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [822], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [866], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 09:01:57,125 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:01:57,125 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:02:02,608 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:02:02,609 INFO L272 AbstractInterpreter]: Visited 193 different actions 774 times. Merged at 11 different actions 38 times. Widened at 1 different actions 1 times. Found 10 fixpoints after 5 different actions. Largest state had 24 variables. [2018-11-07 09:02:02,617 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:02:02,617 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:02:02,617 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:02:02,617 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-07 09:02:02,627 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:02:02,627 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:02:02,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:02:02,839 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:02:03,951 INFO L134 CoverageAnalysis]: Checked inductivity of 1922 backedges. 1419 proven. 2 refuted. 0 times theorem prover too weak. 501 trivial. 0 not checked. [2018-11-07 09:02:03,952 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:02:04,863 INFO L134 CoverageAnalysis]: Checked inductivity of 1922 backedges. 700 proven. 228 refuted. 0 times theorem prover too weak. 994 trivial. 0 not checked. [2018-11-07 09:02:04,885 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:02:04,885 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 6, 6] total 19 [2018-11-07 09:02:04,885 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:02:04,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-07 09:02:04,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-07 09:02:04,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2018-11-07 09:02:04,887 INFO L87 Difference]: Start difference. First operand 11539 states and 13889 transitions. Second operand 17 states. [2018-11-07 09:02:06,153 WARN L179 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 26 [2018-11-07 09:02:09,203 WARN L179 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2018-11-07 09:02:09,354 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 44 [2018-11-07 09:02:09,947 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2018-11-07 09:02:12,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:02:12,104 INFO L93 Difference]: Finished difference Result 25874 states and 32901 transitions. [2018-11-07 09:02:12,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-11-07 09:02:12,104 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 850 [2018-11-07 09:02:12,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:02:12,176 INFO L225 Difference]: With dead ends: 25874 [2018-11-07 09:02:12,176 INFO L226 Difference]: Without dead ends: 14524 [2018-11-07 09:02:12,230 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1772 GetRequests, 1722 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 642 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=583, Invalid=2069, Unknown=0, NotChecked=0, Total=2652 [2018-11-07 09:02:12,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14524 states. [2018-11-07 09:02:12,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14524 to 14455. [2018-11-07 09:02:12,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14455 states. Received shutdown request... [2018-11-07 09:02:12,801 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 09:02:12,811 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 09:02:12,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 09:02:12 BoogieIcfgContainer [2018-11-07 09:02:12,811 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 09:02:12,812 INFO L168 Benchmark]: Toolchain (without parser) took 236149.14 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 3.5 GB in the end (delta: -2.1 GB). Peak memory consumption was 2.9 GB. Max. memory is 7.1 GB. [2018-11-07 09:02:12,813 INFO L168 Benchmark]: CDTParser took 0.21 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. [2018-11-07 09:02:12,815 INFO L168 Benchmark]: CACSL2BoogieTranslator took 940.12 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-11-07 09:02:12,815 INFO L168 Benchmark]: Boogie Procedure Inliner took 148.71 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 694.2 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -782.9 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. [2018-11-07 09:02:12,816 INFO L168 Benchmark]: Boogie Preprocessor took 128.98 ms. Allocated memory is still 2.2 GB. Free memory is still 2.1 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 09:02:12,817 INFO L168 Benchmark]: RCFGBuilder took 3756.69 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 120.1 MB). Peak memory consumption was 120.1 MB. Max. memory is 7.1 GB. [2018-11-07 09:02:12,818 INFO L168 Benchmark]: TraceAbstraction took 231169.44 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 3.5 GB in the end (delta: -1.4 GB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. [2018-11-07 09:02:12,825 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 940.12 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 148.71 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 694.2 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -782.9 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 128.98 ms. Allocated memory is still 2.2 GB. Free memory is still 2.1 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3756.69 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 120.1 MB). Peak memory consumption was 120.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 231169.44 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 3.5 GB in the end (delta: -1.4 GB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 145]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 145). Cancelled while ReachableStatesComputation was computing reachable states (14455 states constructedinput type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 231.0s OverallTime, 11 OverallIterations, 7 TraceHistogramMax, 152.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1443 SDtfs, 17745 SDslu, 2382 SDs, 0 SdLazy, 23380 SolverSat, 3817 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 116.3s Time, PredicateUnifierStatistics: 8 DeclaredPredicates, 7921 GetRequests, 7689 SyntacticMatches, 2 SemanticMatches, 230 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2547 ImplicationChecksByTransitivity, 14.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11539occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 44.8s AbstIntTime, 8 AbstIntIterations, 4 AbstIntStrong, 0.9975759525501606 AbsIntWeakeningRatio, 0.07745664739884393 AbsIntAvgWeakeningVarsNumRemoved, 16.229479768786128 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.8s AutomataMinimizationTime, 11 MinimizatonAttempts, 1656 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 14.7s InterpolantComputationTime, 8060 NumberOfCodeBlocks, 8060 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 10996 ConstructedInterpolants, 0 QuantifiedInterpolants, 34111322 SizeOfPredicates, 21 NumberOfNonLiveVariables, 4215 ConjunctsInSsa, 55 ConjunctsInUnsatCore, 19 InterpolantComputations, 3 PerfectInterpolantSequences, 17269/20998 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown