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-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label15_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 11:41:25,671 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 11:41:25,673 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 11:41:25,686 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 11:41:25,686 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 11:41:25,687 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 11:41:25,688 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 11:41:25,690 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 11:41:25,692 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 11:41:25,693 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 11:41:25,693 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 11:41:25,694 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 11:41:25,695 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 11:41:25,696 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 11:41:25,697 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 11:41:25,697 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 11:41:25,698 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 11:41:25,700 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 11:41:25,702 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 11:41:25,704 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 11:41:25,705 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 11:41:25,706 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 11:41:25,708 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 11:41:25,708 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 11:41:25,709 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 11:41:25,710 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 11:41:25,711 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 11:41:25,711 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 11:41:25,712 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 11:41:25,713 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 11:41:25,714 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 11:41:25,714 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-11-07 11:41:25,717 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-11-07 11:41:25,742 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 11:41:25,742 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 11:41:25,743 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 11:41:25,743 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 11:41:25,744 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 11:41:25,744 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 11:41:25,744 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 11:41:25,746 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 11:41:25,746 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 11:41:25,746 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 11:41:25,746 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 11:41:25,746 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 11:41:25,747 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 11:41:25,747 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 11:41:25,747 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 11:41:25,749 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 11:41:25,749 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 11:41:25,749 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 11:41:25,749 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 11:41:25,749 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 11:41:25,751 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 11:41:25,751 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 11:41:25,751 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 11:41:25,751 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 11:41:25,752 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 11:41:25,752 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 11:41:25,752 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 11:41:25,752 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 11:41:25,752 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 11:41:25,753 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 11:41:25,753 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 11:41:25,753 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 11:41:25,753 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 11:41:25,754 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 11:41:25,808 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 11:41:25,826 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 11:41:25,831 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 11:41:25,833 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 11:41:25,833 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 11:41:25,834 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label15_false-unreach-call.c [2018-11-07 11:41:25,900 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4ae9fbdd/7c1a7f1b4e44448d8b8918ddc3d717a0/FLAGb899953c2 [2018-11-07 11:41:26,477 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 11:41:26,481 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label15_false-unreach-call.c [2018-11-07 11:41:26,508 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4ae9fbdd/7c1a7f1b4e44448d8b8918ddc3d717a0/FLAGb899953c2 [2018-11-07 11:41:26,530 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4ae9fbdd/7c1a7f1b4e44448d8b8918ddc3d717a0 [2018-11-07 11:41:26,542 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 11:41:26,544 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 11:41:26,545 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 11:41:26,545 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 11:41:26,552 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 11:41:26,553 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:41:26" (1/1) ... [2018-11-07 11:41:26,556 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17182b52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:41:26, skipping insertion in model container [2018-11-07 11:41:26,556 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:41:26" (1/1) ... [2018-11-07 11:41:26,567 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 11:41:26,656 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 11:41:27,282 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 11:41:27,288 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 11:41:27,457 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 11:41:27,476 INFO L193 MainTranslator]: Completed translation [2018-11-07 11:41:27,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:41:27 WrapperNode [2018-11-07 11:41:27,477 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 11:41:27,478 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 11:41:27,478 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 11:41:27,478 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 11:41:27,488 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:41:27" (1/1) ... [2018-11-07 11:41:27,663 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:41:27" (1/1) ... [2018-11-07 11:41:27,671 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 11:41:27,671 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 11:41:27,672 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 11:41:27,672 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 11:41:27,685 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:41:27" (1/1) ... [2018-11-07 11:41:27,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:41:27" (1/1) ... [2018-11-07 11:41:27,697 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:41:27" (1/1) ... [2018-11-07 11:41:27,697 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:41:27" (1/1) ... [2018-11-07 11:41:27,759 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:41:27" (1/1) ... [2018-11-07 11:41:27,786 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:41:27" (1/1) ... [2018-11-07 11:41:27,798 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:41:27" (1/1) ... [2018-11-07 11:41:27,811 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 11:41:27,812 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 11:41:27,812 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 11:41:27,812 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 11:41:27,813 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:41:27" (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 11:41:27,878 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 11:41:27,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 11:41:27,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 11:41:27,879 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 11:41:27,879 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 11:41:27,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 11:41:27,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 11:41:27,880 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 11:41:27,880 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 11:41:32,064 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 11:41:32,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:41:32 BoogieIcfgContainer [2018-11-07 11:41:32,065 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 11:41:32,067 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 11:41:32,067 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 11:41:32,071 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 11:41:32,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 11:41:26" (1/3) ... [2018-11-07 11:41:32,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c9d3f9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:41:32, skipping insertion in model container [2018-11-07 11:41:32,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:41:27" (2/3) ... [2018-11-07 11:41:32,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c9d3f9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:41:32, skipping insertion in model container [2018-11-07 11:41:32,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:41:32" (3/3) ... [2018-11-07 11:41:32,075 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label15_false-unreach-call.c [2018-11-07 11:41:32,084 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 11:41:32,093 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 11:41:32,109 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 11:41:32,158 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 11:41:32,159 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 11:41:32,159 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 11:41:32,159 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 11:41:32,159 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 11:41:32,159 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 11:41:32,160 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 11:41:32,160 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 11:41:32,190 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-11-07 11:41:32,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-07 11:41:32,197 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 11:41:32,198 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] [2018-11-07 11:41:32,201 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 11:41:32,207 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 11:41:32,207 INFO L82 PathProgramCache]: Analyzing trace with hash 90592777, now seen corresponding path program 1 times [2018-11-07 11:41:32,210 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 11:41:32,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:41:32,263 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 11:41:32,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:41:32,263 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 11:41:32,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 11:41:32,640 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 11:41:32,643 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 11:41:32,643 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 11:41:32,643 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 11:41:32,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 11:41:32,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 11:41:32,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 11:41:32,670 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-11-07 11:41:35,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 11:41:35,708 INFO L93 Difference]: Finished difference Result 985 states and 1761 transitions. [2018-11-07 11:41:35,716 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 11:41:35,717 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2018-11-07 11:41:35,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 11:41:35,740 INFO L225 Difference]: With dead ends: 985 [2018-11-07 11:41:35,740 INFO L226 Difference]: Without dead ends: 686 [2018-11-07 11:41:35,751 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 11:41:35,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2018-11-07 11:41:35,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 686. [2018-11-07 11:41:35,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 686 states. [2018-11-07 11:41:35,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 1046 transitions. [2018-11-07 11:41:35,856 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 1046 transitions. Word has length 21 [2018-11-07 11:41:35,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 11:41:35,857 INFO L480 AbstractCegarLoop]: Abstraction has 686 states and 1046 transitions. [2018-11-07 11:41:35,857 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 11:41:35,857 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 1046 transitions. [2018-11-07 11:41:35,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-11-07 11:41:35,863 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 11:41:35,863 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 11:41:35,864 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 11:41:35,864 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 11:41:35,864 INFO L82 PathProgramCache]: Analyzing trace with hash 2082581707, now seen corresponding path program 1 times [2018-11-07 11:41:35,865 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 11:41:35,866 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:41:35,866 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 11:41:35,866 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:41:35,867 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 11:41:35,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 11:41:36,334 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 11:41:36,334 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 11:41:36,334 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 11:41:36,335 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 11:41:36,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 11:41:36,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 11:41:36,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-07 11:41:36,337 INFO L87 Difference]: Start difference. First operand 686 states and 1046 transitions. Second operand 6 states. [2018-11-07 11:41:41,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 11:41:41,510 INFO L93 Difference]: Finished difference Result 2338 states and 3732 transitions. [2018-11-07 11:41:41,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 11:41:41,512 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2018-11-07 11:41:41,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 11:41:41,526 INFO L225 Difference]: With dead ends: 2338 [2018-11-07 11:41:41,526 INFO L226 Difference]: Without dead ends: 1658 [2018-11-07 11:41:41,531 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-07 11:41:41,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1658 states. [2018-11-07 11:41:41,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1658 to 1641. [2018-11-07 11:41:41,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1641 states. [2018-11-07 11:41:41,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1641 states to 1641 states and 2352 transitions. [2018-11-07 11:41:41,619 INFO L78 Accepts]: Start accepts. Automaton has 1641 states and 2352 transitions. Word has length 102 [2018-11-07 11:41:41,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 11:41:41,620 INFO L480 AbstractCegarLoop]: Abstraction has 1641 states and 2352 transitions. [2018-11-07 11:41:41,620 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 11:41:41,620 INFO L276 IsEmpty]: Start isEmpty. Operand 1641 states and 2352 transitions. [2018-11-07 11:41:41,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-11-07 11:41:41,633 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 11:41:41,634 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 11:41:41,634 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 11:41:41,635 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 11:41:41,635 INFO L82 PathProgramCache]: Analyzing trace with hash 712970381, now seen corresponding path program 1 times [2018-11-07 11:41:41,635 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 11:41:41,636 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:41:41,636 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 11:41:41,636 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:41:41,637 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 11:41:41,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 11:41:41,839 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 11:41:41,839 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 11:41:41,840 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 11:41:41,840 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 11:41:41,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 11:41:41,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 11:41:41,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 11:41:41,841 INFO L87 Difference]: Start difference. First operand 1641 states and 2352 transitions. Second operand 4 states. [2018-11-07 11:41:44,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 11:41:44,703 INFO L93 Difference]: Finished difference Result 6228 states and 9280 transitions. [2018-11-07 11:41:44,704 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 11:41:44,704 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 153 [2018-11-07 11:41:44,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 11:41:44,745 INFO L225 Difference]: With dead ends: 6228 [2018-11-07 11:41:44,745 INFO L226 Difference]: Without dead ends: 4593 [2018-11-07 11:41:44,764 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 11:41:44,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4593 states. [2018-11-07 11:41:44,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4593 to 4563. [2018-11-07 11:41:44,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4563 states. [2018-11-07 11:41:44,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4563 states to 4563 states and 6338 transitions. [2018-11-07 11:41:44,932 INFO L78 Accepts]: Start accepts. Automaton has 4563 states and 6338 transitions. Word has length 153 [2018-11-07 11:41:44,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 11:41:44,933 INFO L480 AbstractCegarLoop]: Abstraction has 4563 states and 6338 transitions. [2018-11-07 11:41:44,933 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 11:41:44,933 INFO L276 IsEmpty]: Start isEmpty. Operand 4563 states and 6338 transitions. [2018-11-07 11:41:44,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2018-11-07 11:41:44,941 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 11:41:44,941 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:41:44,946 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 11:41:44,946 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 11:41:44,946 INFO L82 PathProgramCache]: Analyzing trace with hash -657545899, now seen corresponding path program 1 times [2018-11-07 11:41:44,946 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 11:41:44,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:41:44,947 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 11:41:44,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:41:44,948 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 11:41:44,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 11:41:45,198 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 28 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 11:41:45,198 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 11:41:45,198 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 11:41:45,199 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 190 with the following transitions: [2018-11-07 11:41:45,202 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [69], [71], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [506], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [594], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 11:41:45,253 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 11:41:45,253 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 11:41:45,850 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 11:41:46,214 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 11:41:46,222 INFO L272 AbstractInterpreter]: Visited 100 different actions 100 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-11-07 11:41:46,275 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 11:41:46,276 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 11:41:47,168 INFO L227 lantSequenceWeakener]: Weakened 180 states. On average, predicates are now at 72.97% of their original sizes. [2018-11-07 11:41:47,169 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 11:41:47,511 INFO L415 sIntCurrentIteration]: We unified 188 AI predicates to 188 [2018-11-07 11:41:47,512 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 11:41:47,513 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 11:41:47,513 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-07 11:41:47,513 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 11:41:47,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 11:41:47,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 11:41:47,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 11:41:47,515 INFO L87 Difference]: Start difference. First operand 4563 states and 6338 transitions. Second operand 7 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown