java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label26_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 02:54:56,679 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 02:54:56,681 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 02:54:56,697 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 02:54:56,697 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 02:54:56,699 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 02:54:56,701 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 02:54:56,703 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 02:54:56,705 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 02:54:56,712 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 02:54:56,713 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 02:54:56,714 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 02:54:56,715 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 02:54:56,716 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 02:54:56,719 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 02:54:56,720 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 02:54:56,721 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 02:54:56,722 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 02:54:56,727 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 02:54:56,732 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 02:54:56,733 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 02:54:56,734 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 02:54:56,736 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-27 02:54:56,742 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 02:54:56,742 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 02:54:56,743 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 02:54:56,743 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 02:54:56,743 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-27 02:54:56,758 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 02:54:56,759 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 02:54:56,759 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 02:54:56,760 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 02:54:56,760 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 02:54:56,760 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 02:54:56,760 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 02:54:56,760 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 02:54:56,761 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 02:54:56,761 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 02:54:56,761 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 02:54:56,761 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 02:54:56,762 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 02:54:56,762 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 02:54:56,762 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 02:54:56,762 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 02:54:56,763 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 02:54:56,763 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 02:54:56,763 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 02:54:56,763 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 02:54:56,763 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 02:54:56,764 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 02:54:56,764 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 02:54:56,764 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 02:54:56,764 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 02:54:56,764 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 02:54:56,765 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 02:54:56,765 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 02:54:56,765 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 02:54:56,765 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 02:54:56,765 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 02:54:56,765 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 02:54:56,766 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 02:54:56,766 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 02:54:56,813 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 02:54:56,826 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 02:54:56,831 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 02:54:56,832 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 02:54:56,833 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 02:54:56,834 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label26_true-unreach-call.c [2018-10-27 02:54:56,895 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4766235b3/bb2ec3d02ea642b292c20254b2b2a041/FLAGbcbcd37fd [2018-10-27 02:54:57,708 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 02:54:57,709 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label26_true-unreach-call.c [2018-10-27 02:54:57,744 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4766235b3/bb2ec3d02ea642b292c20254b2b2a041/FLAGbcbcd37fd [2018-10-27 02:54:57,760 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4766235b3/bb2ec3d02ea642b292c20254b2b2a041 [2018-10-27 02:54:57,771 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 02:54:57,773 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 02:54:57,775 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 02:54:57,775 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 02:54:57,779 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 02:54:57,780 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:54:57" (1/1) ... [2018-10-27 02:54:57,783 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@441f49ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:54:57, skipping insertion in model container [2018-10-27 02:54:57,783 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:54:57" (1/1) ... [2018-10-27 02:54:57,795 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 02:54:58,005 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 02:54:59,550 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 02:54:59,558 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 02:55:00,291 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 02:55:00,333 INFO L193 MainTranslator]: Completed translation [2018-10-27 02:55:00,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:55:00 WrapperNode [2018-10-27 02:55:00,334 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 02:55:00,335 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 02:55:00,335 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 02:55:00,336 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 02:55:00,346 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:55:00" (1/1) ... [2018-10-27 02:55:00,424 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:55:00" (1/1) ... [2018-10-27 02:55:00,948 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 02:55:00,948 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 02:55:00,948 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 02:55:00,948 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 02:55:00,959 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:55:00" (1/1) ... [2018-10-27 02:55:00,960 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:55:00" (1/1) ... [2018-10-27 02:55:00,984 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:55:00" (1/1) ... [2018-10-27 02:55:00,985 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:55:00" (1/1) ... [2018-10-27 02:55:01,118 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:55:00" (1/1) ... [2018-10-27 02:55:01,154 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:55:00" (1/1) ... [2018-10-27 02:55:01,193 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:55:00" (1/1) ... [2018-10-27 02:55:01,234 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 02:55:01,235 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 02:55:01,235 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 02:55:01,235 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 02:55:01,236 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:55:00" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 02:55:01,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 02:55:01,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 02:55:01,308 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-27 02:55:01,309 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-27 02:55:01,310 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-27 02:55:01,310 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-27 02:55:01,310 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 02:55:01,310 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 02:55:01,310 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 02:55:01,310 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 02:55:01,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 02:55:01,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 02:55:01,311 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 02:55:01,312 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 02:55:12,530 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 02:55:12,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:55:12 BoogieIcfgContainer [2018-10-27 02:55:12,531 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 02:55:12,533 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 02:55:12,533 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 02:55:12,536 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 02:55:12,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:54:57" (1/3) ... [2018-10-27 02:55:12,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4756ed02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:55:12, skipping insertion in model container [2018-10-27 02:55:12,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:55:00" (2/3) ... [2018-10-27 02:55:12,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4756ed02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:55:12, skipping insertion in model container [2018-10-27 02:55:12,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:55:12" (3/3) ... [2018-10-27 02:55:12,540 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label26_true-unreach-call.c [2018-10-27 02:55:12,550 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 02:55:12,560 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 02:55:12,578 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 02:55:12,627 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 02:55:12,627 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 02:55:12,628 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 02:55:12,628 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 02:55:12,628 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 02:55:12,628 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 02:55:12,628 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 02:55:12,628 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 02:55:12,673 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-10-27 02:55:12,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-27 02:55:12,682 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 02:55:12,683 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] [2018-10-27 02:55:12,686 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 02:55:12,692 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:55:12,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1543659883, now seen corresponding path program 1 times [2018-10-27 02:55:12,695 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 02:55:12,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:55:12,754 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 02:55:12,754 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:55:12,754 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 02:55:12,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 02:55:13,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 02:55:13,224 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 02:55:13,225 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 02:55:13,225 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 02:55:13,241 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 02:55:13,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 02:55:13,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 02:55:13,282 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 4 states. [2018-10-27 02:55:27,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 02:55:27,172 INFO L93 Difference]: Finished difference Result 3968 states and 7392 transitions. [2018-10-27 02:55:27,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 02:55:27,174 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2018-10-27 02:55:27,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 02:55:27,227 INFO L225 Difference]: With dead ends: 3968 [2018-10-27 02:55:27,227 INFO L226 Difference]: Without dead ends: 2842 [2018-10-27 02:55:27,239 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 02:55:27,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2842 states. [2018-10-27 02:55:27,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2842 to 1981. [2018-10-27 02:55:27,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1981 states. [2018-10-27 02:55:27,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1981 states to 1981 states and 3456 transitions. [2018-10-27 02:55:27,440 INFO L78 Accepts]: Start accepts. Automaton has 1981 states and 3456 transitions. Word has length 45 [2018-10-27 02:55:27,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 02:55:27,441 INFO L481 AbstractCegarLoop]: Abstraction has 1981 states and 3456 transitions. [2018-10-27 02:55:27,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 02:55:27,442 INFO L276 IsEmpty]: Start isEmpty. Operand 1981 states and 3456 transitions. [2018-10-27 02:55:27,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-10-27 02:55:27,454 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 02:55:27,455 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 02:55:27,455 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 02:55:27,455 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:55:27,456 INFO L82 PathProgramCache]: Analyzing trace with hash 369865390, now seen corresponding path program 1 times [2018-10-27 02:55:27,456 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 02:55:27,457 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:55:27,458 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 02:55:27,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:55:27,458 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 02:55:27,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 02:55:27,829 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 02:55:27,830 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 02:55:27,830 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 02:55:27,830 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 02:55:27,832 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 02:55:27,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 02:55:27,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 02:55:27,833 INFO L87 Difference]: Start difference. First operand 1981 states and 3456 transitions. Second operand 5 states. [2018-10-27 02:55:47,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 02:55:47,596 INFO L93 Difference]: Finished difference Result 5673 states and 10081 transitions. [2018-10-27 02:55:47,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 02:55:47,597 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 115 [2018-10-27 02:55:47,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 02:55:47,624 INFO L225 Difference]: With dead ends: 5673 [2018-10-27 02:55:47,624 INFO L226 Difference]: Without dead ends: 3698 [2018-10-27 02:55:47,632 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-27 02:55:47,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3698 states. [2018-10-27 02:55:47,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3698 to 3687. [2018-10-27 02:55:47,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3687 states. [2018-10-27 02:55:47,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3687 states to 3687 states and 5871 transitions. [2018-10-27 02:55:47,752 INFO L78 Accepts]: Start accepts. Automaton has 3687 states and 5871 transitions. Word has length 115 [2018-10-27 02:55:47,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 02:55:47,753 INFO L481 AbstractCegarLoop]: Abstraction has 3687 states and 5871 transitions. [2018-10-27 02:55:47,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 02:55:47,753 INFO L276 IsEmpty]: Start isEmpty. Operand 3687 states and 5871 transitions. [2018-10-27 02:55:47,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-10-27 02:55:47,769 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 02:55:47,770 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 02:55:47,770 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 02:55:47,770 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:55:47,770 INFO L82 PathProgramCache]: Analyzing trace with hash 241566930, now seen corresponding path program 1 times [2018-10-27 02:55:47,771 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 02:55:47,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:55:47,775 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 02:55:47,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:55:47,775 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 02:55:47,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 02:55:48,027 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 02:55:48,027 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 02:55:48,028 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 02:55:48,028 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 02:55:48,028 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 02:55:48,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 02:55:48,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 02:55:48,029 INFO L87 Difference]: Start difference. First operand 3687 states and 5871 transitions. Second operand 5 states. [2018-10-27 02:56:02,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 02:56:02,347 INFO L93 Difference]: Finished difference Result 10963 states and 17868 transitions. [2018-10-27 02:56:02,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 02:56:02,348 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2018-10-27 02:56:02,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 02:56:02,398 INFO L225 Difference]: With dead ends: 10963 [2018-10-27 02:56:02,398 INFO L226 Difference]: Without dead ends: 7282 [2018-10-27 02:56:02,414 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-27 02:56:02,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7282 states. [2018-10-27 02:56:02,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7282 to 7175. [2018-10-27 02:56:02,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7175 states. [2018-10-27 02:56:02,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7175 states to 7175 states and 10522 transitions. [2018-10-27 02:56:02,602 INFO L78 Accepts]: Start accepts. Automaton has 7175 states and 10522 transitions. Word has length 117 [2018-10-27 02:56:02,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 02:56:02,603 INFO L481 AbstractCegarLoop]: Abstraction has 7175 states and 10522 transitions. [2018-10-27 02:56:02,603 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 02:56:02,603 INFO L276 IsEmpty]: Start isEmpty. Operand 7175 states and 10522 transitions. [2018-10-27 02:56:02,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-10-27 02:56:02,606 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 02:56:02,607 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 02:56:02,607 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 02:56:02,607 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:56:02,608 INFO L82 PathProgramCache]: Analyzing trace with hash 572519882, now seen corresponding path program 1 times [2018-10-27 02:56:02,608 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 02:56:02,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:56:02,609 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 02:56:02,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:56:02,609 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 02:56:02,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 02:56:02,777 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 02:56:02,778 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 02:56:02,778 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 02:56:02,778 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 02:56:02,779 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 02:56:02,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 02:56:02,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 02:56:02,779 INFO L87 Difference]: Start difference. First operand 7175 states and 10522 transitions. Second operand 4 states. [2018-10-27 02:56:12,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 02:56:12,646 INFO L93 Difference]: Finished difference Result 27675 states and 43307 transitions. [2018-10-27 02:56:12,652 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 02:56:12,652 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 161 [2018-10-27 02:56:12,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 02:56:12,761 INFO L225 Difference]: With dead ends: 27675 [2018-10-27 02:56:12,761 INFO L226 Difference]: Without dead ends: 20506 [2018-10-27 02:56:12,813 INFO L605 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 [2018-10-27 02:56:12,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20506 states. [2018-10-27 02:56:13,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20506 to 20467. [2018-10-27 02:56:13,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20467 states. [2018-10-27 02:56:13,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20467 states to 20467 states and 29135 transitions. [2018-10-27 02:56:13,419 INFO L78 Accepts]: Start accepts. Automaton has 20467 states and 29135 transitions. Word has length 161 [2018-10-27 02:56:13,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 02:56:13,420 INFO L481 AbstractCegarLoop]: Abstraction has 20467 states and 29135 transitions. [2018-10-27 02:56:13,420 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 02:56:13,420 INFO L276 IsEmpty]: Start isEmpty. Operand 20467 states and 29135 transitions. [2018-10-27 02:56:13,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-10-27 02:56:13,426 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 02:56:13,427 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 02:56:13,427 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 02:56:13,427 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:56:13,428 INFO L82 PathProgramCache]: Analyzing trace with hash 499433324, now seen corresponding path program 1 times [2018-10-27 02:56:13,428 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 02:56:13,429 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:56:13,429 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 02:56:13,429 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:56:13,430 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 02:56:13,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 02:56:13,698 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 02:56:13,699 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 02:56:13,699 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 02:56:13,699 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 02:56:13,700 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 02:56:13,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 02:56:13,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 02:56:13,701 INFO L87 Difference]: Start difference. First operand 20467 states and 29135 transitions. Second operand 4 states. [2018-10-27 02:56:25,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 02:56:25,984 INFO L93 Difference]: Finished difference Result 47396 states and 67722 transitions. [2018-10-27 02:56:25,992 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 02:56:25,992 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 166 [2018-10-27 02:56:25,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 02:56:26,095 INFO L225 Difference]: With dead ends: 47396 [2018-10-27 02:56:26,095 INFO L226 Difference]: Without dead ends: 26935 [2018-10-27 02:56:26,170 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 02:56:26,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26935 states. [2018-10-27 02:56:26,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26935 to 26934. [2018-10-27 02:56:26,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26934 states. [2018-10-27 02:56:26,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26934 states to 26934 states and 34386 transitions. [2018-10-27 02:56:26,720 INFO L78 Accepts]: Start accepts. Automaton has 26934 states and 34386 transitions. Word has length 166 [2018-10-27 02:56:26,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 02:56:26,721 INFO L481 AbstractCegarLoop]: Abstraction has 26934 states and 34386 transitions. [2018-10-27 02:56:26,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 02:56:26,721 INFO L276 IsEmpty]: Start isEmpty. Operand 26934 states and 34386 transitions. [2018-10-27 02:56:26,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2018-10-27 02:56:26,738 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 02:56:26,739 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 02:56:26,739 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 02:56:26,739 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:56:26,740 INFO L82 PathProgramCache]: Analyzing trace with hash 2012871233, now seen corresponding path program 1 times [2018-10-27 02:56:26,740 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 02:56:26,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:56:26,741 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 02:56:26,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:56:26,741 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 02:56:26,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 02:56:27,533 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 193 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 02:56:27,534 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 02:56:27,534 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 02:56:27,536 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 332 with the following transitions: [2018-10-27 02:56:27,538 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2859], [2867], [2875], [2883], [2887], [2889], [2892], [2900], [2908], [2916], [2924], [2932], [2940], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3305], [3309], [3313], [3317], [3321], [3325], [3329], [3333], [3344], [3355], [3358], [3363], [3365], [3366], [3370], [3374], [3378], [3382], [3386], [3390], [3394], [3398], [3402], [3406], [3410], [3414], [3425], [3429], [3440], [3451], [3455], [3459], [3463], [3467], [3471], [3475], [3479], [3483], [3487], [3498], [3502], [3506], [3517], [3521], [3525], [3529], [3533], [3537], [3541], [3545], [3556], [3560], [3564], [3568], [3572], [3576], [3580], [3591], [3595], [3598], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-10-27 02:56:27,621 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 02:56:27,622 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 02:56:37,800 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 02:56:38,335 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 02:56:38,337 INFO L272 AbstractInterpreter]: Visited 170 different actions 170 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-27 02:56:38,380 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:56:38,381 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 02:56:45,809 INFO L227 lantSequenceWeakener]: Weakened 308 states. On average, predicates are now at 71.36% of their original sizes. [2018-10-27 02:56:45,810 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 02:56:47,466 INFO L415 sIntCurrentIteration]: We unified 330 AI predicates to 330 [2018-10-27 02:56:47,467 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 02:56:47,468 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 02:56:47,468 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [6] total 16 [2018-10-27 02:56:47,468 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 02:56:47,469 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-27 02:56:47,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-27 02:56:47,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2018-10-27 02:56:47,469 INFO L87 Difference]: Start difference. First operand 26934 states and 34386 transitions. Second operand 12 states. Received shutdown request... [2018-10-27 02:58:34,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-27 02:58:34,917 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 02:58:34,922 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 02:58:34,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 02:58:34 BoogieIcfgContainer [2018-10-27 02:58:34,923 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 02:58:34,924 INFO L168 Benchmark]: Toolchain (without parser) took 217152.05 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 3.7 GB in the end (delta: -2.3 GB). Peak memory consumption was 414.9 MB. Max. memory is 7.1 GB. [2018-10-27 02:58:34,926 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 02:58:34,927 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2560.00 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-10-27 02:58:34,928 INFO L168 Benchmark]: Boogie Procedure Inliner took 612.69 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 824.2 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 73.1 MB. Max. memory is 7.1 GB. [2018-10-27 02:58:34,929 INFO L168 Benchmark]: Boogie Preprocessor took 286.20 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 37.1 MB). Peak memory consumption was 37.1 MB. Max. memory is 7.1 GB. [2018-10-27 02:58:34,930 INFO L168 Benchmark]: RCFGBuilder took 11296.41 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 187.2 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 17.7 MB). Peak memory consumption was 664.2 MB. Max. memory is 7.1 GB. [2018-10-27 02:58:34,931 INFO L168 Benchmark]: TraceAbstraction took 202390.61 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.2 GB in the beginning and 3.7 GB in the end (delta: -1.5 GB). Peak memory consumption was 193.1 MB. Max. memory is 7.1 GB. [2018-10-27 02:58:34,937 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 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2560.00 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 612.69 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 824.2 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 73.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 286.20 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 37.1 MB). Peak memory consumption was 37.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11296.41 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 187.2 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 17.7 MB). Peak memory consumption was 664.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 202390.61 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.2 GB in the beginning and 3.7 GB in the end (delta: -1.5 GB). Peak memory consumption was 193.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 126]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 126). Cancelled while BasicCegarLoop was constructing difference of abstraction (26934states) and FLOYD_HOARE automaton (currently 11 states, 12 states before enhancement),while ReachableStatesComputation was computing reachable states (3639 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 202.3s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 178.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3914 SDtfs, 15257 SDslu, 2264 SDs, 0 SdLazy, 23592 SolverSat, 6815 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 132.1s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 369 GetRequests, 335 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26934occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 10.8s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9971841491841489 AbsIntWeakeningRatio, 0.09090909090909091 AbsIntAvgWeakeningVarsNumRemoved, 24.69090909090909 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.6s AutomataMinimizationTime, 5 MinimizatonAttempts, 1019 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 935 NumberOfCodeBlocks, 935 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 929 ConstructedInterpolants, 0 QuantifiedInterpolants, 627665 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 345/347 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown