java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label27_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-24 01:05:52,865 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 01:05:52,867 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 01:05:52,879 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 01:05:52,880 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 01:05:52,881 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 01:05:52,882 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 01:05:52,884 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 01:05:52,886 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 01:05:52,889 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 01:05:52,890 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 01:05:52,891 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 01:05:52,892 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 01:05:52,895 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 01:05:52,896 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 01:05:52,899 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 01:05:52,900 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 01:05:52,905 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 01:05:52,912 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 01:05:52,917 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 01:05:52,918 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 01:05:52,920 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 01:05:52,922 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 01:05:52,934 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 01:05:52,965 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 01:05:52,965 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 01:05:52,966 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 01:05:52,966 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 01:05:52,966 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 01:05:52,967 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 01:05:52,967 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 01:05:52,967 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 01:05:52,967 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 01:05:52,967 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 01:05:52,968 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 01:05:52,968 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 01:05:52,969 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 01:05:52,969 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 01:05:52,969 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 01:05:52,969 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 01:05:52,969 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 01:05:52,969 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 01:05:52,970 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 01:05:52,970 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 01:05:52,970 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 01:05:52,970 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 01:05:52,970 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 01:05:52,971 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 01:05:52,971 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 01:05:52,971 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 01:05:52,971 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 01:05:52,971 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 01:05:52,972 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 01:05:52,972 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 01:05:52,972 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 01:05:52,972 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 01:05:52,972 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 01:05:52,973 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 01:05:53,025 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 01:05:53,039 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 01:05:53,042 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 01:05:53,044 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 01:05:53,044 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 01:05:53,045 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label27_true-unreach-call.c [2018-10-24 01:05:53,105 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b08891260/5c6178d9c26e486c90f92b342b698bb4/FLAGa93edd717 [2018-10-24 01:05:53,755 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 01:05:53,756 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label27_true-unreach-call.c [2018-10-24 01:05:53,787 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b08891260/5c6178d9c26e486c90f92b342b698bb4/FLAGa93edd717 [2018-10-24 01:05:53,806 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b08891260/5c6178d9c26e486c90f92b342b698bb4 [2018-10-24 01:05:53,816 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 01:05:53,818 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 01:05:53,819 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 01:05:53,819 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 01:05:53,823 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 01:05:53,824 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:05:53" (1/1) ... [2018-10-24 01:05:53,827 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b4461b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:05:53, skipping insertion in model container [2018-10-24 01:05:53,827 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:05:53" (1/1) ... [2018-10-24 01:05:53,838 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 01:05:53,926 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 01:05:54,545 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 01:05:54,550 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 01:05:54,728 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 01:05:54,751 INFO L193 MainTranslator]: Completed translation [2018-10-24 01:05:54,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:05:54 WrapperNode [2018-10-24 01:05:54,751 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 01:05:54,752 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 01:05:54,753 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 01:05:54,753 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 01:05:54,764 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:05:54" (1/1) ... [2018-10-24 01:05:54,804 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:05:54" (1/1) ... [2018-10-24 01:05:55,055 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 01:05:55,056 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 01:05:55,056 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 01:05:55,056 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 01:05:55,067 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:05:54" (1/1) ... [2018-10-24 01:05:55,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:05:54" (1/1) ... [2018-10-24 01:05:55,075 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:05:54" (1/1) ... [2018-10-24 01:05:55,079 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:05:54" (1/1) ... [2018-10-24 01:05:55,138 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:05:54" (1/1) ... [2018-10-24 01:05:55,161 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:05:54" (1/1) ... [2018-10-24 01:05:55,187 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:05:54" (1/1) ... [2018-10-24 01:05:55,208 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 01:05:55,209 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 01:05:55,209 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 01:05:55,209 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 01:05:55,210 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:05:54" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 01:05:55,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 01:05:55,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 01:05:55,287 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 01:05:55,287 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 01:05:55,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 01:05:55,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 01:05:55,288 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 01:05:55,288 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 01:05:59,569 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 01:05:59,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:05:59 BoogieIcfgContainer [2018-10-24 01:05:59,570 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 01:05:59,571 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 01:05:59,571 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 01:05:59,580 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 01:05:59,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:05:53" (1/3) ... [2018-10-24 01:05:59,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@771a1288 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:05:59, skipping insertion in model container [2018-10-24 01:05:59,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:05:54" (2/3) ... [2018-10-24 01:05:59,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@771a1288 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:05:59, skipping insertion in model container [2018-10-24 01:05:59,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:05:59" (3/3) ... [2018-10-24 01:05:59,584 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label27_true-unreach-call.c [2018-10-24 01:05:59,593 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 01:05:59,602 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 01:05:59,621 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 01:05:59,662 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 01:05:59,663 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 01:05:59,663 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 01:05:59,663 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 01:05:59,664 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 01:05:59,664 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 01:05:59,664 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 01:05:59,664 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 01:05:59,694 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-10-24 01:05:59,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-10-24 01:05:59,704 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:05:59,705 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 01:05:59,707 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:05:59,714 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:05:59,714 INFO L82 PathProgramCache]: Analyzing trace with hash 266493369, now seen corresponding path program 1 times [2018-10-24 01:05:59,717 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:05:59,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:05:59,770 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:05:59,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:05:59,770 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:05:59,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:06:00,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:06:00,216 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:06:00,216 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 01:06:00,216 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:06:00,222 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 01:06:00,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 01:06:00,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 01:06:00,242 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-10-24 01:06:03,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:06:03,714 INFO L93 Difference]: Finished difference Result 996 states and 1776 transitions. [2018-10-24 01:06:03,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 01:06:03,717 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2018-10-24 01:06:03,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:06:03,742 INFO L225 Difference]: With dead ends: 996 [2018-10-24 01:06:03,742 INFO L226 Difference]: Without dead ends: 697 [2018-10-24 01:06:03,752 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 [2018-10-24 01:06:03,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2018-10-24 01:06:03,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 481. [2018-10-24 01:06:03,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 481 states. [2018-10-24 01:06:03,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 742 transitions. [2018-10-24 01:06:03,842 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 742 transitions. Word has length 49 [2018-10-24 01:06:03,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:06:03,843 INFO L481 AbstractCegarLoop]: Abstraction has 481 states and 742 transitions. [2018-10-24 01:06:03,843 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 01:06:03,843 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 742 transitions. [2018-10-24 01:06:03,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-10-24 01:06:03,851 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:06:03,851 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 01:06:03,852 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:06:03,852 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:06:03,852 INFO L82 PathProgramCache]: Analyzing trace with hash 1615287979, now seen corresponding path program 1 times [2018-10-24 01:06:03,852 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:06:03,854 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:06:03,854 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:06:03,854 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:06:03,854 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:06:03,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:06:04,197 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:06:04,197 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:06:04,197 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 01:06:04,198 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:06:04,200 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 01:06:04,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 01:06:04,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 01:06:04,202 INFO L87 Difference]: Start difference. First operand 481 states and 742 transitions. Second operand 6 states. [2018-10-24 01:06:08,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:06:08,138 INFO L93 Difference]: Finished difference Result 1725 states and 2777 transitions. [2018-10-24 01:06:08,142 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 01:06:08,142 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 122 [2018-10-24 01:06:08,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:06:08,155 INFO L225 Difference]: With dead ends: 1725 [2018-10-24 01:06:08,155 INFO L226 Difference]: Without dead ends: 1250 [2018-10-24 01:06:08,161 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 01:06:08,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2018-10-24 01:06:08,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 1231. [2018-10-24 01:06:08,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1231 states. [2018-10-24 01:06:08,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1231 states to 1231 states and 1812 transitions. [2018-10-24 01:06:08,264 INFO L78 Accepts]: Start accepts. Automaton has 1231 states and 1812 transitions. Word has length 122 [2018-10-24 01:06:08,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:06:08,265 INFO L481 AbstractCegarLoop]: Abstraction has 1231 states and 1812 transitions. [2018-10-24 01:06:08,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 01:06:08,265 INFO L276 IsEmpty]: Start isEmpty. Operand 1231 states and 1812 transitions. [2018-10-24 01:06:08,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-10-24 01:06:08,277 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:06:08,278 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 01:06:08,278 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:06:08,278 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:06:08,279 INFO L82 PathProgramCache]: Analyzing trace with hash 1254054036, now seen corresponding path program 1 times [2018-10-24 01:06:08,279 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:06:08,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:06:08,280 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:06:08,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:06:08,281 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:06:08,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:06:08,544 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:06:08,545 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:06:08,545 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 01:06:08,545 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:06:08,546 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 01:06:08,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 01:06:08,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 01:06:08,547 INFO L87 Difference]: Start difference. First operand 1231 states and 1812 transitions. Second operand 4 states. [2018-10-24 01:06:11,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:06:11,484 INFO L93 Difference]: Finished difference Result 3241 states and 4920 transitions. [2018-10-24 01:06:11,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 01:06:11,492 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 123 [2018-10-24 01:06:11,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:06:11,511 INFO L225 Difference]: With dead ends: 3241 [2018-10-24 01:06:11,511 INFO L226 Difference]: Without dead ends: 2016 [2018-10-24 01:06:11,520 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 01:06:11,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2016 states. [2018-10-24 01:06:11,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2016 to 2001. [2018-10-24 01:06:11,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2001 states. [2018-10-24 01:06:11,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2001 states to 2001 states and 2887 transitions. [2018-10-24 01:06:11,600 INFO L78 Accepts]: Start accepts. Automaton has 2001 states and 2887 transitions. Word has length 123 [2018-10-24 01:06:11,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:06:11,601 INFO L481 AbstractCegarLoop]: Abstraction has 2001 states and 2887 transitions. [2018-10-24 01:06:11,601 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 01:06:11,601 INFO L276 IsEmpty]: Start isEmpty. Operand 2001 states and 2887 transitions. [2018-10-24 01:06:11,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-10-24 01:06:11,609 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:06:11,609 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 01:06:11,609 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:06:11,610 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:06:11,610 INFO L82 PathProgramCache]: Analyzing trace with hash 1858238712, now seen corresponding path program 1 times [2018-10-24 01:06:11,610 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:06:11,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:06:11,612 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:06:11,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:06:11,612 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:06:11,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:06:11,893 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:06:11,893 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:06:11,893 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 01:06:11,893 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:06:11,894 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 01:06:11,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 01:06:11,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 01:06:11,895 INFO L87 Difference]: Start difference. First operand 2001 states and 2887 transitions. Second operand 5 states. [2018-10-24 01:06:16,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:06:16,657 INFO L93 Difference]: Finished difference Result 6980 states and 10605 transitions. [2018-10-24 01:06:16,664 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 01:06:16,664 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2018-10-24 01:06:16,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:06:16,701 INFO L225 Difference]: With dead ends: 6980 [2018-10-24 01:06:16,701 INFO L226 Difference]: Without dead ends: 4985 [2018-10-24 01:06:16,731 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 [2018-10-24 01:06:16,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4985 states. [2018-10-24 01:06:16,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4985 to 4692. [2018-10-24 01:06:16,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4692 states. [2018-10-24 01:06:16,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4692 states to 4692 states and 6361 transitions. [2018-10-24 01:06:16,899 INFO L78 Accepts]: Start accepts. Automaton has 4692 states and 6361 transitions. Word has length 125 [2018-10-24 01:06:16,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:06:16,899 INFO L481 AbstractCegarLoop]: Abstraction has 4692 states and 6361 transitions. [2018-10-24 01:06:16,900 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 01:06:16,900 INFO L276 IsEmpty]: Start isEmpty. Operand 4692 states and 6361 transitions. [2018-10-24 01:06:16,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-10-24 01:06:16,916 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:06:16,916 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 01:06:16,916 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:06:16,916 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:06:16,917 INFO L82 PathProgramCache]: Analyzing trace with hash 1707184253, now seen corresponding path program 1 times [2018-10-24 01:06:16,917 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:06:16,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:06:16,918 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:06:16,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:06:16,919 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:06:16,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:06:17,854 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 36 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:06:17,855 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 01:06:17,855 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 01:06:17,856 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 182 with the following transitions: [2018-10-24 01:06:17,861 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [293], [295], [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], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-24 01:06:17,977 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 01:06:17,977 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 01:06:22,673 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 01:06:40,253 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 01:06:40,256 INFO L272 AbstractInterpreter]: Visited 139 different actions 404 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-10-24 01:06:40,302 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:06:40,302 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 01:06:43,861 INFO L232 lantSequenceWeakener]: Weakened 21 states. On average, predicates are now at 78.02% of their original sizes. [2018-10-24 01:06:43,862 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 01:07:44,872 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 01:07:44,873 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 01:07:44,873 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [8] total 23 [2018-10-24 01:07:44,873 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:07:44,874 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-24 01:07:44,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-24 01:07:44,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2018-10-24 01:07:44,875 INFO L87 Difference]: Start difference. First operand 4692 states and 6361 transitions. Second operand 17 states. Received shutdown request... [2018-10-24 01:10:01,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-24 01:10:01,080 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 01:10:01,085 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 01:10:01,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 01:10:01 BoogieIcfgContainer [2018-10-24 01:10:01,086 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 01:10:01,087 INFO L168 Benchmark]: Toolchain (without parser) took 247270.14 ms. Allocated memory was 1.5 GB in the beginning and 3.7 GB in the end (delta: 2.1 GB). Free memory was 1.4 GB in the beginning and 2.8 GB in the end (delta: -1.4 GB). Peak memory consumption was 724.7 MB. Max. memory is 7.1 GB. [2018-10-24 01:10:01,089 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 01:10:01,089 INFO L168 Benchmark]: CACSL2BoogieTranslator took 933.42 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. [2018-10-24 01:10:01,090 INFO L168 Benchmark]: Boogie Procedure Inliner took 303.14 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 747.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -838.8 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2018-10-24 01:10:01,091 INFO L168 Benchmark]: Boogie Preprocessor took 152.79 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 01:10:01,092 INFO L168 Benchmark]: RCFGBuilder took 4361.04 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 175.2 MB). Peak memory consumption was 175.2 MB. Max. memory is 7.1 GB. [2018-10-24 01:10:01,093 INFO L168 Benchmark]: TraceAbstraction took 241515.01 ms. Allocated memory was 2.3 GB in the beginning and 3.7 GB in the end (delta: 1.4 GB). Free memory was 2.0 GB in the beginning and 2.8 GB in the end (delta: -791.7 MB). Peak memory consumption was 577.2 MB. Max. memory is 7.1 GB. [2018-10-24 01:10:01,098 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 933.42 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 303.14 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 747.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -838.8 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 152.79 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 4361.04 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 175.2 MB). Peak memory consumption was 175.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 241515.01 ms. Allocated memory was 2.3 GB in the beginning and 3.7 GB in the end (delta: 1.4 GB). Free memory was 2.0 GB in the beginning and 2.8 GB in the end (delta: -791.7 MB). Peak memory consumption was 577.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 132]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 132). Cancelled while BasicCegarLoop was constructing difference of abstraction (4692states) and FLOYD_HOARE automaton (currently 17 states, 17 states before enhancement),while ReachableStatesComputation was computing reachable states (956 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 241.4s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 151.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 688 SDtfs, 3762 SDslu, 671 SDs, 0 SdLazy, 6727 SolverSat, 1612 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 49.1s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 218 GetRequests, 127 SyntacticMatches, 51 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 67.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4692occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 22.4s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9950029394473839 AbsIntWeakeningRatio, 0.12777777777777777 AbsIntAvgWeakeningVarsNumRemoved, 1055.2333333333333 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 4 MinimizatonAttempts, 543 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 600 NumberOfCodeBlocks, 600 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 595 ConstructedInterpolants, 0 QuantifiedInterpolants, 354973 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 162/168 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown