java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label40_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 08:23:55,789 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 08:23:55,792 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 08:23:55,806 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 08:23:55,806 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 08:23:55,807 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 08:23:55,809 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 08:23:55,810 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 08:23:55,812 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 08:23:55,813 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 08:23:55,814 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 08:23:55,814 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 08:23:55,815 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 08:23:55,816 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 08:23:55,818 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 08:23:55,818 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 08:23:55,819 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 08:23:55,821 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 08:23:55,823 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 08:23:55,825 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 08:23:55,826 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 08:23:55,827 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 08:23:55,830 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-27 08:23:55,839 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-27 08:23:55,855 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 08:23:55,855 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 08:23:55,856 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 08:23:55,856 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 08:23:55,857 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 08:23:55,857 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 08:23:55,857 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-27 08:23:55,857 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 08:23:55,858 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 08:23:55,858 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 08:23:55,858 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 08:23:55,858 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 08:23:55,858 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 08:23:55,858 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 08:23:55,859 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 08:23:55,860 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 08:23:55,860 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 08:23:55,860 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 08:23:55,860 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 08:23:55,860 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 08:23:55,860 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 08:23:55,861 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 08:23:55,861 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 08:23:55,861 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 08:23:55,861 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 08:23:55,861 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 08:23:55,862 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 08:23:55,862 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 08:23:55,862 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 08:23:55,862 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 08:23:55,863 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 08:23:55,863 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 08:23:55,863 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 08:23:55,863 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 08:23:55,863 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 08:23:55,863 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 08:23:55,909 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 08:23:55,924 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 08:23:55,929 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 08:23:55,931 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 08:23:55,931 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 08:23:55,934 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label40_true-unreach-call.c [2018-10-27 08:23:56,011 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/86a1fd247/d25ab69d816745fba4341d1cc5313a2c/FLAGed7d37fe6 [2018-10-27 08:23:56,749 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 08:23:56,750 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label40_true-unreach-call.c [2018-10-27 08:23:56,774 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/86a1fd247/d25ab69d816745fba4341d1cc5313a2c/FLAGed7d37fe6 [2018-10-27 08:23:56,796 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/86a1fd247/d25ab69d816745fba4341d1cc5313a2c [2018-10-27 08:23:56,810 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 08:23:56,812 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 08:23:56,813 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 08:23:56,813 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 08:23:56,822 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 08:23:56,824 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:23:56" (1/1) ... [2018-10-27 08:23:56,828 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fa98528 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:23:56, skipping insertion in model container [2018-10-27 08:23:56,828 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:23:56" (1/1) ... [2018-10-27 08:23:56,841 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 08:23:56,938 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 08:23:57,706 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 08:23:57,711 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 08:23:57,979 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 08:23:58,003 INFO L193 MainTranslator]: Completed translation [2018-10-27 08:23:58,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:23:58 WrapperNode [2018-10-27 08:23:58,004 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 08:23:58,005 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 08:23:58,006 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 08:23:58,006 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 08:23:58,017 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:23:58" (1/1) ... [2018-10-27 08:23:58,071 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:23:58" (1/1) ... [2018-10-27 08:23:58,350 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 08:23:58,350 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 08:23:58,351 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 08:23:58,351 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 08:23:58,361 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:23:58" (1/1) ... [2018-10-27 08:23:58,362 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:23:58" (1/1) ... [2018-10-27 08:23:58,375 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:23:58" (1/1) ... [2018-10-27 08:23:58,375 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:23:58" (1/1) ... [2018-10-27 08:23:58,433 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:23:58" (1/1) ... [2018-10-27 08:23:58,455 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:23:58" (1/1) ... [2018-10-27 08:23:58,486 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:23:58" (1/1) ... [2018-10-27 08:23:58,510 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 08:23:58,511 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 08:23:58,511 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 08:23:58,511 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 08:23:58,512 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:23:58" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 08:23:58,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 08:23:58,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 08:23:58,580 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 08:23:58,580 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 08:23:58,580 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 08:23:58,580 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 08:23:58,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 08:23:58,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 08:23:58,581 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 08:23:58,581 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 08:24:04,572 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 08:24:04,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:24:04 BoogieIcfgContainer [2018-10-27 08:24:04,573 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 08:24:04,575 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 08:24:04,575 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 08:24:04,579 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 08:24:04,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 08:23:56" (1/3) ... [2018-10-27 08:24:04,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68f095bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:24:04, skipping insertion in model container [2018-10-27 08:24:04,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:23:58" (2/3) ... [2018-10-27 08:24:04,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68f095bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:24:04, skipping insertion in model container [2018-10-27 08:24:04,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:24:04" (3/3) ... [2018-10-27 08:24:04,583 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label40_true-unreach-call.c [2018-10-27 08:24:04,593 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 08:24:04,603 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 08:24:04,621 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 08:24:04,666 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 08:24:04,666 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 08:24:04,666 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 08:24:04,666 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 08:24:04,666 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 08:24:04,667 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 08:24:04,667 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 08:24:04,667 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 08:24:04,704 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-10-27 08:24:04,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-10-27 08:24:04,715 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:24:04,716 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:24:04,719 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:24:04,726 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:24:04,726 INFO L82 PathProgramCache]: Analyzing trace with hash 2071799652, now seen corresponding path program 1 times [2018-10-27 08:24:04,728 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:24:04,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:24:04,775 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:24:04,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:24:04,775 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:24:04,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:24:05,287 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 08:24:05,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:24:05,427 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:24:05,428 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 08:24:05,428 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:24:05,437 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 08:24:05,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 08:24:05,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 08:24:05,460 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-10-27 08:24:09,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:24:09,857 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-10-27 08:24:09,861 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 08:24:09,863 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 70 [2018-10-27 08:24:09,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:24:09,891 INFO L225 Difference]: With dead ends: 1156 [2018-10-27 08:24:09,892 INFO L226 Difference]: Without dead ends: 744 [2018-10-27 08:24:09,904 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 08:24:09,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-10-27 08:24:10,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-10-27 08:24:10,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-10-27 08:24:10,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1353 transitions. [2018-10-27 08:24:10,023 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1353 transitions. Word has length 70 [2018-10-27 08:24:10,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:24:10,024 INFO L481 AbstractCegarLoop]: Abstraction has 744 states and 1353 transitions. [2018-10-27 08:24:10,024 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 08:24:10,025 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1353 transitions. [2018-10-27 08:24:10,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2018-10-27 08:24:10,036 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:24:10,036 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 08:24:10,037 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:24:10,037 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:24:10,037 INFO L82 PathProgramCache]: Analyzing trace with hash -3052801, now seen corresponding path program 1 times [2018-10-27 08:24:10,037 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:24:10,039 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:24:10,039 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:24:10,039 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:24:10,039 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:24:10,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:24:10,688 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:24:10,689 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:24:10,689 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 08:24:10,689 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:24:10,692 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 08:24:10,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 08:24:10,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 08:24:10,693 INFO L87 Difference]: Start difference. First operand 744 states and 1353 transitions. Second operand 6 states. [2018-10-27 08:24:19,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:24:19,040 INFO L93 Difference]: Finished difference Result 2184 states and 3997 transitions. [2018-10-27 08:24:19,045 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 08:24:19,045 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 163 [2018-10-27 08:24:19,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:24:19,064 INFO L225 Difference]: With dead ends: 2184 [2018-10-27 08:24:19,064 INFO L226 Difference]: Without dead ends: 1446 [2018-10-27 08:24:19,077 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 08:24:19,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1446 states. [2018-10-27 08:24:19,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1446 to 1425. [2018-10-27 08:24:19,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1425 states. [2018-10-27 08:24:19,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 2267 transitions. [2018-10-27 08:24:19,173 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 2267 transitions. Word has length 163 [2018-10-27 08:24:19,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:24:19,174 INFO L481 AbstractCegarLoop]: Abstraction has 1425 states and 2267 transitions. [2018-10-27 08:24:19,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 08:24:19,174 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 2267 transitions. [2018-10-27 08:24:19,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2018-10-27 08:24:19,189 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:24:19,189 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:24:19,189 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:24:19,190 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:24:19,190 INFO L82 PathProgramCache]: Analyzing trace with hash 277532168, now seen corresponding path program 1 times [2018-10-27 08:24:19,191 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:24:19,193 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:24:19,193 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:24:19,193 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:24:19,193 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:24:19,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:24:19,815 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 126 proven. 88 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 08:24:19,815 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:24:19,817 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:24:19,819 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 275 with the following transitions: [2018-10-27 08:24:19,821 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [579], [587], [595], [603], [611], [619], [627], [635], [639], [641], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [764], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-27 08:24:19,905 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:24:19,905 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:24:20,513 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 08:24:20,516 INFO L272 AbstractInterpreter]: Visited 116 different actions 116 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 08:24:20,548 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:24:20,549 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 08:24:21,291 INFO L227 lantSequenceWeakener]: Weakened 265 states. On average, predicates are now at 78.2% of their original sizes. [2018-10-27 08:24:21,292 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 08:24:21,555 INFO L415 sIntCurrentIteration]: We unified 273 AI predicates to 273 [2018-10-27 08:24:21,555 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 08:24:21,556 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 08:24:21,556 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-10-27 08:24:21,557 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:24:21,558 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 08:24:21,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 08:24:21,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 08:24:21,559 INFO L87 Difference]: Start difference. First operand 1425 states and 2267 transitions. Second operand 6 states. [2018-10-27 08:25:55,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:25:55,809 INFO L93 Difference]: Finished difference Result 3184 states and 5088 transitions. [2018-10-27 08:25:55,809 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 08:25:55,809 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 274 [2018-10-27 08:25:55,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:25:55,819 INFO L225 Difference]: With dead ends: 3184 [2018-10-27 08:25:55,819 INFO L226 Difference]: Without dead ends: 1765 [2018-10-27 08:25:55,824 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 274 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-27 08:25:55,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1765 states. [2018-10-27 08:25:55,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1765 to 1763. [2018-10-27 08:25:55,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1763 states. [2018-10-27 08:25:55,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1763 states to 1763 states and 2612 transitions. [2018-10-27 08:25:55,873 INFO L78 Accepts]: Start accepts. Automaton has 1763 states and 2612 transitions. Word has length 274 [2018-10-27 08:25:55,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:25:55,873 INFO L481 AbstractCegarLoop]: Abstraction has 1763 states and 2612 transitions. [2018-10-27 08:25:55,874 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 08:25:55,874 INFO L276 IsEmpty]: Start isEmpty. Operand 1763 states and 2612 transitions. [2018-10-27 08:25:55,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2018-10-27 08:25:55,881 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:25:55,882 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-27 08:25:55,882 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:25:55,883 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:25:55,883 INFO L82 PathProgramCache]: Analyzing trace with hash -1833325270, now seen corresponding path program 1 times [2018-10-27 08:25:55,883 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:25:55,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:25:55,884 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:25:55,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:25:55,885 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:25:55,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:25:56,230 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 08:25:56,753 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 195 proven. 197 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-10-27 08:25:56,754 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:25:56,754 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:25:56,754 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 367 with the following transitions: [2018-10-27 08:25:56,755 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [579], [587], [595], [603], [611], [619], [627], [635], [639], [641], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [761], [764], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-27 08:25:56,764 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:25:56,764 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:25:57,002 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 08:25:57,002 INFO L272 AbstractInterpreter]: Visited 121 different actions 349 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 08:25:57,039 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:25:57,041 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 08:25:57,041 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:25:57,041 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 08:25:57,059 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:25:57,060 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 08:25:57,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:25:57,203 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 08:25:57,515 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 400 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-10-27 08:25:57,516 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 08:25:58,021 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 284 proven. 92 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2018-10-27 08:25:58,057 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 08:25:58,058 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-10-27 08:25:58,058 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 08:25:58,059 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 08:25:58,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 08:25:58,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-10-27 08:25:58,061 INFO L87 Difference]: Start difference. First operand 1763 states and 2612 transitions. Second operand 9 states. [2018-10-27 08:26:03,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:26:03,758 INFO L93 Difference]: Finished difference Result 4237 states and 6745 transitions. [2018-10-27 08:26:03,759 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 08:26:03,759 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 366 [2018-10-27 08:26:03,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:26:03,777 INFO L225 Difference]: With dead ends: 4237 [2018-10-27 08:26:03,777 INFO L226 Difference]: Without dead ends: 2818 [2018-10-27 08:26:03,782 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 746 GetRequests, 731 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2018-10-27 08:26:03,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2818 states. [2018-10-27 08:26:03,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2818 to 2811. [2018-10-27 08:26:03,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2811 states. [2018-10-27 08:26:03,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2811 states to 2811 states and 4086 transitions. [2018-10-27 08:26:03,864 INFO L78 Accepts]: Start accepts. Automaton has 2811 states and 4086 transitions. Word has length 366 [2018-10-27 08:26:03,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:26:03,865 INFO L481 AbstractCegarLoop]: Abstraction has 2811 states and 4086 transitions. [2018-10-27 08:26:03,865 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 08:26:03,865 INFO L276 IsEmpty]: Start isEmpty. Operand 2811 states and 4086 transitions. [2018-10-27 08:26:03,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2018-10-27 08:26:03,878 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:26:03,878 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2018-10-27 08:26:03,879 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:26:03,879 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:26:03,879 INFO L82 PathProgramCache]: Analyzing trace with hash -1771475300, now seen corresponding path program 1 times [2018-10-27 08:26:03,879 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:26:03,880 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:26:03,880 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:26:03,880 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:26:03,881 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:26:03,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:26:04,615 INFO L134 CoverageAnalysis]: Checked inductivity of 825 backedges. 352 proven. 200 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2018-10-27 08:26:04,615 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:26:04,616 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:26:04,616 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 483 with the following transitions: [2018-10-27 08:26:04,616 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [579], [587], [595], [603], [611], [619], [627], [635], [639], [641], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [761], [764], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-27 08:26:04,621 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:26:04,621 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:26:04,879 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 08:26:04,880 INFO L272 AbstractInterpreter]: Visited 127 different actions 367 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 08:26:04,917 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:26:04,918 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 08:26:04,918 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:26:04,918 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 08:26:04,934 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:26:04,934 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 08:26:05,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:26:05,080 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 08:26:05,652 INFO L134 CoverageAnalysis]: Checked inductivity of 825 backedges. 602 proven. 2 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2018-10-27 08:26:05,653 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 08:26:06,150 INFO L134 CoverageAnalysis]: Checked inductivity of 825 backedges. 352 proven. 200 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2018-10-27 08:26:06,173 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 08:26:06,174 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-10-27 08:26:06,174 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 08:26:06,175 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 08:26:06,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 08:26:06,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-10-27 08:26:06,176 INFO L87 Difference]: Start difference. First operand 2811 states and 4086 transitions. Second operand 9 states. [2018-10-27 08:26:20,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:26:20,301 INFO L93 Difference]: Finished difference Result 11140 states and 16845 transitions. [2018-10-27 08:26:20,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-10-27 08:26:20,302 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 482 [2018-10-27 08:26:20,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:26:20,356 INFO L225 Difference]: With dead ends: 11140 [2018-10-27 08:26:20,356 INFO L226 Difference]: Without dead ends: 7326 [2018-10-27 08:26:20,419 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1045 GetRequests, 997 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 708 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=515, Invalid=1837, Unknown=0, NotChecked=0, Total=2352 [2018-10-27 08:26:20,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7326 states. [2018-10-27 08:26:20,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7326 to 7029. [2018-10-27 08:26:20,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7029 states. [2018-10-27 08:26:20,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7029 states to 7029 states and 7964 transitions. [2018-10-27 08:26:20,630 INFO L78 Accepts]: Start accepts. Automaton has 7029 states and 7964 transitions. Word has length 482 [2018-10-27 08:26:20,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:26:20,631 INFO L481 AbstractCegarLoop]: Abstraction has 7029 states and 7964 transitions. [2018-10-27 08:26:20,631 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 08:26:20,631 INFO L276 IsEmpty]: Start isEmpty. Operand 7029 states and 7964 transitions. [2018-10-27 08:26:20,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 754 [2018-10-27 08:26:20,671 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:26:20,672 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-10-27 08:26:20,672 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:26:20,673 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:26:20,673 INFO L82 PathProgramCache]: Analyzing trace with hash -343805575, now seen corresponding path program 1 times [2018-10-27 08:26:20,673 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:26:20,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:26:20,674 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:26:20,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:26:20,674 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:26:20,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:26:21,975 INFO L134 CoverageAnalysis]: Checked inductivity of 1033 backedges. 367 proven. 345 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2018-10-27 08:26:21,975 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:26:21,975 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:26:21,975 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 754 with the following transitions: [2018-10-27 08:26:21,976 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [579], [587], [595], [603], [611], [619], [627], [635], [639], [641], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1256], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1352], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-27 08:26:21,983 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:26:21,983 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:26:22,445 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 08:26:22,445 INFO L272 AbstractInterpreter]: Visited 250 different actions 494 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 08:26:22,472 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:26:22,472 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 08:26:23,286 INFO L227 lantSequenceWeakener]: Weakened 750 states. On average, predicates are now at 77.65% of their original sizes. [2018-10-27 08:26:23,286 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 08:26:24,225 INFO L415 sIntCurrentIteration]: We unified 752 AI predicates to 752 [2018-10-27 08:26:24,225 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 08:26:24,225 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 08:26:24,226 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [8] total 16 [2018-10-27 08:26:24,226 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:26:24,227 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-27 08:26:24,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-27 08:26:24,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-10-27 08:26:24,228 INFO L87 Difference]: Start difference. First operand 7029 states and 7964 transitions. Second operand 10 states. [2018-10-27 08:27:41,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:27:41,423 INFO L93 Difference]: Finished difference Result 14057 states and 15971 transitions. [2018-10-27 08:27:41,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-27 08:27:41,423 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 753 [2018-10-27 08:27:41,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:27:41,456 INFO L225 Difference]: With dead ends: 14057 [2018-10-27 08:27:41,457 INFO L226 Difference]: Without dead ends: 7372 [2018-10-27 08:27:41,477 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 760 GetRequests, 744 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2018-10-27 08:27:41,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7372 states. [2018-10-27 08:27:41,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7372 to 7369. [2018-10-27 08:27:41,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7369 states. [2018-10-27 08:27:41,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7369 states to 7369 states and 8310 transitions. [2018-10-27 08:27:41,648 INFO L78 Accepts]: Start accepts. Automaton has 7369 states and 8310 transitions. Word has length 753 [2018-10-27 08:27:41,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:27:41,649 INFO L481 AbstractCegarLoop]: Abstraction has 7369 states and 8310 transitions. [2018-10-27 08:27:41,649 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-27 08:27:41,649 INFO L276 IsEmpty]: Start isEmpty. Operand 7369 states and 8310 transitions. [2018-10-27 08:27:41,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 863 [2018-10-27 08:27:41,676 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:27:41,677 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-10-27 08:27:41,678 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:27:41,678 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:27:41,678 INFO L82 PathProgramCache]: Analyzing trace with hash -1865090894, now seen corresponding path program 1 times [2018-10-27 08:27:41,678 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:27:41,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:27:41,679 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:27:41,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:27:41,680 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:27:41,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:27:42,194 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 08:27:42,829 INFO L134 CoverageAnalysis]: Checked inductivity of 1500 backedges. 337 proven. 807 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2018-10-27 08:27:42,830 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:27:42,830 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:27:42,830 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 863 with the following transitions: [2018-10-27 08:27:42,830 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [579], [587], [595], [603], [611], [619], [627], [635], [639], [641], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [796], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1256], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-27 08:27:42,836 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:27:42,836 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:27:43,448 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 08:27:43,448 INFO L272 AbstractInterpreter]: Visited 259 different actions 772 times. Merged at 7 different actions 17 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 24 variables. [2018-10-27 08:27:43,456 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:27:43,456 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 08:27:44,102 INFO L227 lantSequenceWeakener]: Weakened 859 states. On average, predicates are now at 80.39% of their original sizes. [2018-10-27 08:27:44,103 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 08:27:44,178 INFO L415 sIntCurrentIteration]: We unified 861 AI predicates to 861 [2018-10-27 08:27:44,178 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 08:27:44,178 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 08:27:44,178 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [6] total 13 [2018-10-27 08:27:44,178 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:27:44,179 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 08:27:44,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 08:27:44,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-10-27 08:27:44,180 INFO L87 Difference]: Start difference. First operand 7369 states and 8310 transitions. Second operand 9 states. Received shutdown request... [2018-10-27 08:27:54,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-27 08:27:54,846 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 08:27:54,851 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 08:27:54,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 08:27:54 BoogieIcfgContainer [2018-10-27 08:27:54,852 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 08:27:54,853 INFO L168 Benchmark]: Toolchain (without parser) took 238042.16 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 2.0 GB in the end (delta: -530.6 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-10-27 08:27:54,855 INFO L168 Benchmark]: CDTParser took 0.32 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 08:27:54,856 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1191.57 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-10-27 08:27:54,857 INFO L168 Benchmark]: Boogie Procedure Inliner took 344.75 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 747.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -860.1 MB). Peak memory consumption was 28.7 MB. Max. memory is 7.1 GB. [2018-10-27 08:27:54,858 INFO L168 Benchmark]: Boogie Preprocessor took 159.78 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2018-10-27 08:27:54,858 INFO L168 Benchmark]: RCFGBuilder took 6063.09 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 243.1 MB). Peak memory consumption was 243.1 MB. Max. memory is 7.1 GB. [2018-10-27 08:27:54,859 INFO L168 Benchmark]: TraceAbstraction took 230277.27 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 2.0 GB in the end (delta: -11.9 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-10-27 08:27:54,864 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 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 1191.57 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 344.75 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 747.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -860.1 MB). Peak memory consumption was 28.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 159.78 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6063.09 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 243.1 MB). Peak memory consumption was 243.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 230277.27 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 2.0 GB in the end (delta: -11.9 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 196]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 196). Cancelled while BasicCegarLoop was constructing difference of abstraction (7369states) and FLOYD_HOARE automaton (currently 15 states, 9 states before enhancement),while ReachableStatesComputation was computing reachable states (3504 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 230.1s OverallTime, 7 OverallIterations, 6 TraceHistogramMax, 214.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1179 SDtfs, 12481 SDslu, 1620 SDs, 0 SdLazy, 20194 SolverSat, 5103 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 179.0s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 3708 GetRequests, 3599 SyntacticMatches, 7 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 799 ImplicationChecksByTransitivity, 4.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7369occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 2.4s AbstIntTime, 5 AbstIntIterations, 3 AbstIntStrong, 0.998143083934694 AbsIntWeakeningRatio, 0.05726405090137858 AbsIntAvgWeakeningVarsNumRemoved, 16.225874867444325 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 6 MinimizatonAttempts, 330 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 5.6s InterpolantComputationTime, 3818 NumberOfCodeBlocks, 3818 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 4655 ConstructedInterpolants, 0 QuantifiedInterpolants, 8506251 SizeOfPredicates, 2 NumberOfNonLiveVariables, 1349 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 11 InterpolantComputations, 2 PerfectInterpolantSequences, 4755/6688 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown