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/Problem03_label12_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-25 00:09:54,935 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-25 00:09:54,938 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-25 00:09:54,955 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-25 00:09:54,955 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-25 00:09:54,956 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-25 00:09:54,958 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-25 00:09:54,960 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-25 00:09:54,961 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-25 00:09:54,962 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-25 00:09:54,963 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-25 00:09:54,964 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-25 00:09:54,964 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-25 00:09:54,965 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-25 00:09:54,967 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-25 00:09:54,968 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-25 00:09:54,969 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-25 00:09:54,970 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-25 00:09:54,973 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-25 00:09:54,974 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-25 00:09:54,976 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-25 00:09:54,977 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-25 00:09:54,979 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-25 00:09:54,988 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 [2018-10-25 00:09:55,009 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-25 00:09:55,009 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-25 00:09:55,010 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-25 00:09:55,010 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-25 00:09:55,011 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-25 00:09:55,011 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-25 00:09:55,011 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-25 00:09:55,011 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-25 00:09:55,011 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-25 00:09:55,012 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-25 00:09:55,012 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-25 00:09:55,012 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-25 00:09:55,012 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-25 00:09:55,012 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-25 00:09:55,013 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-25 00:09:55,013 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-25 00:09:55,014 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-25 00:09:55,014 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-25 00:09:55,014 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-25 00:09:55,014 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-25 00:09:55,014 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-25 00:09:55,015 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-25 00:09:55,015 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-25 00:09:55,015 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-25 00:09:55,015 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-25 00:09:55,015 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-25 00:09:55,015 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-25 00:09:55,016 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-25 00:09:55,016 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-25 00:09:55,016 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-25 00:09:55,016 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-25 00:09:55,016 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-25 00:09:55,017 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-25 00:09:55,017 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-25 00:09:55,017 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-25 00:09:55,017 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-25 00:09:55,062 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-25 00:09:55,076 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-25 00:09:55,080 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-25 00:09:55,082 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-25 00:09:55,082 INFO L276 PluginConnector]: CDTParser initialized [2018-10-25 00:09:55,083 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label12_true-unreach-call.c [2018-10-25 00:09:55,149 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/dfd7c6ed5/4c9fe821cc674b83bc12013e839600b4/FLAGa558ee624 [2018-10-25 00:09:55,849 INFO L298 CDTParser]: Found 1 translation units. [2018-10-25 00:09:55,850 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label12_true-unreach-call.c [2018-10-25 00:09:55,868 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/dfd7c6ed5/4c9fe821cc674b83bc12013e839600b4/FLAGa558ee624 [2018-10-25 00:09:55,886 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/dfd7c6ed5/4c9fe821cc674b83bc12013e839600b4 [2018-10-25 00:09:55,899 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-25 00:09:55,903 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-25 00:09:55,905 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-25 00:09:55,905 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-25 00:09:55,912 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-25 00:09:55,913 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 12:09:55" (1/1) ... [2018-10-25 00:09:55,917 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ae346ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:09:55, skipping insertion in model container [2018-10-25 00:09:55,917 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 12:09:55" (1/1) ... [2018-10-25 00:09:55,928 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-25 00:09:56,041 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-25 00:09:56,805 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 00:09:56,811 INFO L189 MainTranslator]: Completed pre-run [2018-10-25 00:09:57,110 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 00:09:57,134 INFO L193 MainTranslator]: Completed translation [2018-10-25 00:09:57,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:09:57 WrapperNode [2018-10-25 00:09:57,134 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-25 00:09:57,136 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-25 00:09:57,136 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-25 00:09:57,136 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-25 00:09:57,147 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:09:57" (1/1) ... [2018-10-25 00:09:57,197 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:09:57" (1/1) ... [2018-10-25 00:09:57,448 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-25 00:09:57,448 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-25 00:09:57,449 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-25 00:09:57,449 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-25 00:09:57,461 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:09:57" (1/1) ... [2018-10-25 00:09:57,461 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:09:57" (1/1) ... [2018-10-25 00:09:57,470 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:09:57" (1/1) ... [2018-10-25 00:09:57,471 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:09:57" (1/1) ... [2018-10-25 00:09:57,541 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:09:57" (1/1) ... [2018-10-25 00:09:57,576 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:09:57" (1/1) ... [2018-10-25 00:09:57,611 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:09:57" (1/1) ... [2018-10-25 00:09:57,629 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-25 00:09:57,630 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-25 00:09:57,630 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-25 00:09:57,630 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-25 00:09:57,631 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:09:57" (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 [2018-10-25 00:09:57,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-25 00:09:57,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-25 00:09:57,715 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-25 00:09:57,715 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-25 00:09:57,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-25 00:09:57,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-25 00:09:57,716 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-25 00:09:57,716 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-25 00:10:02,656 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-25 00:10:02,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 12:10:02 BoogieIcfgContainer [2018-10-25 00:10:02,661 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-25 00:10:02,662 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-25 00:10:02,662 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-25 00:10:02,665 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-25 00:10:02,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 12:09:55" (1/3) ... [2018-10-25 00:10:02,667 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21c8cf4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 12:10:02, skipping insertion in model container [2018-10-25 00:10:02,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:09:57" (2/3) ... [2018-10-25 00:10:02,668 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21c8cf4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 12:10:02, skipping insertion in model container [2018-10-25 00:10:02,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 12:10:02" (3/3) ... [2018-10-25 00:10:02,670 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label12_true-unreach-call.c [2018-10-25 00:10:02,680 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-25 00:10:02,690 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-25 00:10:02,708 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-25 00:10:02,750 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-25 00:10:02,750 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-25 00:10:02,750 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-25 00:10:02,751 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-25 00:10:02,751 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-25 00:10:02,751 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-25 00:10:02,751 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-25 00:10:02,751 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-25 00:10:02,782 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-10-25 00:10:02,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-10-25 00:10:02,800 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:10:02,802 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:10:02,804 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:10:02,811 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:10:02,811 INFO L82 PathProgramCache]: Analyzing trace with hash -927745007, now seen corresponding path program 1 times [2018-10-25 00:10:02,814 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:10:02,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:10:02,870 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:10:02,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:10:02,870 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:10:03,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:10:03,717 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 00:10:03,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:10:03,982 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 00:10:03,983 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-25 00:10:03,983 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:10:03,989 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 00:10:04,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 00:10:04,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 00:10:04,010 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 3 states. [2018-10-25 00:10:06,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:10:06,232 INFO L93 Difference]: Finished difference Result 845 states and 1487 transitions. [2018-10-25 00:10:06,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 00:10:06,234 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 170 [2018-10-25 00:10:06,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:10:06,258 INFO L225 Difference]: With dead ends: 845 [2018-10-25 00:10:06,258 INFO L226 Difference]: Without dead ends: 531 [2018-10-25 00:10:06,267 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 [2018-10-25 00:10:06,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2018-10-25 00:10:06,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 530. [2018-10-25 00:10:06,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 530 states. [2018-10-25 00:10:06,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 869 transitions. [2018-10-25 00:10:06,360 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 869 transitions. Word has length 170 [2018-10-25 00:10:06,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:10:06,362 INFO L481 AbstractCegarLoop]: Abstraction has 530 states and 869 transitions. [2018-10-25 00:10:06,362 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 00:10:06,362 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 869 transitions. [2018-10-25 00:10:06,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-10-25 00:10:06,372 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:10:06,373 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:10:06,373 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:10:06,374 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:10:06,374 INFO L82 PathProgramCache]: Analyzing trace with hash 1807947448, now seen corresponding path program 1 times [2018-10-25 00:10:06,374 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:10:06,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:10:06,376 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:10:06,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:10:06,376 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:10:06,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:10:06,668 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:10:06,668 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 00:10:06,668 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-25 00:10:06,669 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:10:06,671 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 00:10:06,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 00:10:06,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-25 00:10:06,672 INFO L87 Difference]: Start difference. First operand 530 states and 869 transitions. Second operand 6 states. [2018-10-25 00:10:10,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:10:10,311 INFO L93 Difference]: Finished difference Result 1599 states and 2688 transitions. [2018-10-25 00:10:10,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-25 00:10:10,312 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 180 [2018-10-25 00:10:10,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:10:10,324 INFO L225 Difference]: With dead ends: 1599 [2018-10-25 00:10:10,324 INFO L226 Difference]: Without dead ends: 1075 [2018-10-25 00:10:10,331 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 [2018-10-25 00:10:10,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1075 states. [2018-10-25 00:10:10,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1075 to 1034. [2018-10-25 00:10:10,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1034 states. [2018-10-25 00:10:10,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1689 transitions. [2018-10-25 00:10:10,397 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1689 transitions. Word has length 180 [2018-10-25 00:10:10,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:10:10,397 INFO L481 AbstractCegarLoop]: Abstraction has 1034 states and 1689 transitions. [2018-10-25 00:10:10,397 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 00:10:10,398 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1689 transitions. [2018-10-25 00:10:10,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-10-25 00:10:10,402 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:10:10,403 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:10:10,403 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:10:10,403 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:10:10,404 INFO L82 PathProgramCache]: Analyzing trace with hash 479453333, now seen corresponding path program 1 times [2018-10-25 00:10:10,404 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:10:10,405 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:10:10,405 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:10:10,405 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:10:10,405 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:10:10,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:10:10,786 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:10:10,786 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 00:10:10,787 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-25 00:10:10,787 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:10:10,789 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 00:10:10,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 00:10:10,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 00:10:10,790 INFO L87 Difference]: Start difference. First operand 1034 states and 1689 transitions. Second operand 3 states. [2018-10-25 00:10:13,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:10:13,187 INFO L93 Difference]: Finished difference Result 2912 states and 4936 transitions. [2018-10-25 00:10:13,194 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 00:10:13,194 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 183 [2018-10-25 00:10:13,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:10:13,213 INFO L225 Difference]: With dead ends: 2912 [2018-10-25 00:10:13,213 INFO L226 Difference]: Without dead ends: 1884 [2018-10-25 00:10:13,219 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 00:10:13,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1884 states. [2018-10-25 00:10:13,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1884 to 1881. [2018-10-25 00:10:13,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1881 states. [2018-10-25 00:10:13,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1881 states to 1881 states and 2981 transitions. [2018-10-25 00:10:13,294 INFO L78 Accepts]: Start accepts. Automaton has 1881 states and 2981 transitions. Word has length 183 [2018-10-25 00:10:13,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:10:13,296 INFO L481 AbstractCegarLoop]: Abstraction has 1881 states and 2981 transitions. [2018-10-25 00:10:13,297 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 00:10:13,297 INFO L276 IsEmpty]: Start isEmpty. Operand 1881 states and 2981 transitions. [2018-10-25 00:10:13,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2018-10-25 00:10:13,304 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:10:13,305 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:10:13,305 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:10:13,305 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:10:13,306 INFO L82 PathProgramCache]: Analyzing trace with hash 1957803305, now seen corresponding path program 1 times [2018-10-25 00:10:13,306 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:10:13,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:10:13,307 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:10:13,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:10:13,307 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:10:13,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:10:13,642 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:10:13,642 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 00:10:13,643 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-25 00:10:13,643 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:10:13,643 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-25 00:10:13,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-25 00:10:13,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-25 00:10:13,644 INFO L87 Difference]: Start difference. First operand 1881 states and 2981 transitions. Second operand 7 states. [2018-10-25 00:10:16,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:10:16,344 INFO L93 Difference]: Finished difference Result 5729 states and 9791 transitions. [2018-10-25 00:10:16,352 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-25 00:10:16,352 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 189 [2018-10-25 00:10:16,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:10:16,387 INFO L225 Difference]: With dead ends: 5729 [2018-10-25 00:10:16,387 INFO L226 Difference]: Without dead ends: 3854 [2018-10-25 00:10:16,397 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2018-10-25 00:10:16,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3854 states. [2018-10-25 00:10:16,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3854 to 3744. [2018-10-25 00:10:16,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3744 states. [2018-10-25 00:10:16,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3744 states to 3744 states and 6108 transitions. [2018-10-25 00:10:16,621 INFO L78 Accepts]: Start accepts. Automaton has 3744 states and 6108 transitions. Word has length 189 [2018-10-25 00:10:16,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:10:16,621 INFO L481 AbstractCegarLoop]: Abstraction has 3744 states and 6108 transitions. [2018-10-25 00:10:16,621 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-25 00:10:16,622 INFO L276 IsEmpty]: Start isEmpty. Operand 3744 states and 6108 transitions. [2018-10-25 00:10:16,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-10-25 00:10:16,633 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:10:16,633 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:10:16,634 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:10:16,634 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:10:16,634 INFO L82 PathProgramCache]: Analyzing trace with hash -551348028, now seen corresponding path program 1 times [2018-10-25 00:10:16,634 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:10:16,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:10:16,635 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:10:16,636 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:10:16,636 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:10:16,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:10:16,881 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 00:10:16,977 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:10:16,978 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 00:10:16,978 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-25 00:10:16,978 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:10:16,979 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 00:10:16,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 00:10:16,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-25 00:10:16,979 INFO L87 Difference]: Start difference. First operand 3744 states and 6108 transitions. Second operand 6 states. [2018-10-25 00:10:19,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:10:19,166 INFO L93 Difference]: Finished difference Result 8125 states and 13602 transitions. [2018-10-25 00:10:19,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-25 00:10:19,173 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 190 [2018-10-25 00:10:19,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:10:19,197 INFO L225 Difference]: With dead ends: 8125 [2018-10-25 00:10:19,198 INFO L226 Difference]: Without dead ends: 4387 [2018-10-25 00:10:19,215 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-25 00:10:19,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4387 states. [2018-10-25 00:10:19,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4387 to 4215. [2018-10-25 00:10:19,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4215 states. [2018-10-25 00:10:19,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4215 states to 4215 states and 6296 transitions. [2018-10-25 00:10:19,337 INFO L78 Accepts]: Start accepts. Automaton has 4215 states and 6296 transitions. Word has length 190 [2018-10-25 00:10:19,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:10:19,337 INFO L481 AbstractCegarLoop]: Abstraction has 4215 states and 6296 transitions. [2018-10-25 00:10:19,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 00:10:19,337 INFO L276 IsEmpty]: Start isEmpty. Operand 4215 states and 6296 transitions. [2018-10-25 00:10:19,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-10-25 00:10:19,349 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:10:19,349 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:10:19,350 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:10:19,350 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:10:19,350 INFO L82 PathProgramCache]: Analyzing trace with hash -1721729602, now seen corresponding path program 1 times [2018-10-25 00:10:19,350 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:10:19,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:10:19,351 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:10:19,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:10:19,352 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:10:19,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:10:19,600 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 00:10:19,783 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:10:19,784 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:10:19,784 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:10:19,785 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 195 with the following transitions: [2018-10-25 00:10:19,790 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [10], [12], [13], [17], [21], [25], [28], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [821], [823], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:10:19,877 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:10:19,877 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:10:21,202 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 00:10:21,204 INFO L272 AbstractInterpreter]: Visited 171 different actions 171 times. Never merged. Never widened. Never found a fixpoint. Largest state had 88 variables. [2018-10-25 00:10:21,244 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:10:21,245 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 00:10:22,477 INFO L232 lantSequenceWeakener]: Weakened 183 states. On average, predicates are now at 71.86% of their original sizes. [2018-10-25 00:10:22,478 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 00:10:23,354 INFO L413 sIntCurrentIteration]: We have 193 unified AI predicates [2018-10-25 00:10:23,354 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-25 00:10:23,355 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-25 00:10:23,355 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [5] total 20 [2018-10-25 00:10:23,355 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:10:23,356 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-25 00:10:23,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-25 00:10:23,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2018-10-25 00:10:23,357 INFO L87 Difference]: Start difference. First operand 4215 states and 6296 transitions. Second operand 17 states. [2018-10-25 00:10:59,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:10:59,635 INFO L93 Difference]: Finished difference Result 8634 states and 12893 transitions. [2018-10-25 00:10:59,635 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-25 00:10:59,635 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 194 [2018-10-25 00:10:59,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:10:59,653 INFO L225 Difference]: With dead ends: 8634 [2018-10-25 00:10:59,654 INFO L226 Difference]: Without dead ends: 4425 [2018-10-25 00:10:59,664 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 194 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2018-10-25 00:10:59,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4425 states. [2018-10-25 00:10:59,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4425 to 4423. [2018-10-25 00:10:59,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4423 states. [2018-10-25 00:10:59,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4423 states to 4423 states and 6513 transitions. [2018-10-25 00:10:59,779 INFO L78 Accepts]: Start accepts. Automaton has 4423 states and 6513 transitions. Word has length 194 [2018-10-25 00:10:59,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:10:59,780 INFO L481 AbstractCegarLoop]: Abstraction has 4423 states and 6513 transitions. [2018-10-25 00:10:59,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-25 00:10:59,780 INFO L276 IsEmpty]: Start isEmpty. Operand 4423 states and 6513 transitions. [2018-10-25 00:10:59,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2018-10-25 00:10:59,792 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:10:59,793 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:10:59,793 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:10:59,794 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:10:59,794 INFO L82 PathProgramCache]: Analyzing trace with hash 1815420179, now seen corresponding path program 1 times [2018-10-25 00:10:59,794 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:10:59,795 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:10:59,795 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:10:59,795 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:10:59,796 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:10:59,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:11:00,023 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:11:00,024 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:11:00,024 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:11:00,024 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 204 with the following transitions: [2018-10-25 00:11:00,025 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [10], [12], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [821], [823], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:11:00,034 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:11:00,034 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:11:02,823 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 00:11:02,824 INFO L272 AbstractInterpreter]: Visited 176 different actions 343 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-25 00:11:02,830 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:11:02,831 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 00:11:02,831 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:11:02,831 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 [2018-10-25 00:11:02,840 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:11:02,840 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 00:11:03,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:11:03,057 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 00:11:03,235 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-25 00:11:03,236 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 00:11:03,575 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-25 00:11:03,601 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-25 00:11:03,601 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [5] total 7 [2018-10-25 00:11:03,601 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:11:03,602 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 00:11:03,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 00:11:03,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-10-25 00:11:03,602 INFO L87 Difference]: Start difference. First operand 4423 states and 6513 transitions. Second operand 3 states. [2018-10-25 00:11:04,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:11:04,518 INFO L93 Difference]: Finished difference Result 8630 states and 12805 transitions. [2018-10-25 00:11:04,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 00:11:04,527 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 203 [2018-10-25 00:11:04,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:11:04,546 INFO L225 Difference]: With dead ends: 8630 [2018-10-25 00:11:04,546 INFO L226 Difference]: Without dead ends: 4421 [2018-10-25 00:11:04,557 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 405 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-10-25 00:11:04,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4421 states. [2018-10-25 00:11:04,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4421 to 4421. [2018-10-25 00:11:04,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4421 states. [2018-10-25 00:11:04,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4421 states to 4421 states and 6509 transitions. [2018-10-25 00:11:04,672 INFO L78 Accepts]: Start accepts. Automaton has 4421 states and 6509 transitions. Word has length 203 [2018-10-25 00:11:04,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:11:04,673 INFO L481 AbstractCegarLoop]: Abstraction has 4421 states and 6509 transitions. [2018-10-25 00:11:04,673 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 00:11:04,673 INFO L276 IsEmpty]: Start isEmpty. Operand 4421 states and 6509 transitions. [2018-10-25 00:11:04,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-10-25 00:11:04,686 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:11:04,686 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:11:04,687 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:11:04,687 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:11:04,687 INFO L82 PathProgramCache]: Analyzing trace with hash -1185740873, now seen corresponding path program 1 times [2018-10-25 00:11:04,687 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:11:04,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:11:04,688 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:11:04,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:11:04,689 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:11:04,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:11:05,102 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 50 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:11:05,103 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:11:05,103 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:11:05,103 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 211 with the following transitions: [2018-10-25 00:11:05,104 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [48], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [821], [823], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:11:05,111 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:11:05,112 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:11:07,650 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 00:11:07,651 INFO L272 AbstractInterpreter]: Visited 175 different actions 342 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-25 00:11:07,657 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:11:07,657 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 00:11:07,657 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:11:07,657 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 [2018-10-25 00:11:07,666 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:11:07,666 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 00:11:07,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:11:07,864 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 00:11:07,991 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-10-25 00:11:07,991 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 00:11:08,292 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-10-25 00:11:08,313 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-25 00:11:08,313 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2018-10-25 00:11:08,313 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:11:08,314 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 00:11:08,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 00:11:08,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-10-25 00:11:08,315 INFO L87 Difference]: Start difference. First operand 4421 states and 6509 transitions. Second operand 3 states. [2018-10-25 00:11:11,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:11:11,143 INFO L93 Difference]: Finished difference Result 12525 states and 19198 transitions. [2018-10-25 00:11:11,144 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 00:11:11,144 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 210 [2018-10-25 00:11:11,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:11:11,183 INFO L225 Difference]: With dead ends: 12525 [2018-10-25 00:11:11,183 INFO L226 Difference]: Without dead ends: 8318 [2018-10-25 00:11:11,199 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 425 GetRequests, 418 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-10-25 00:11:11,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8318 states. [2018-10-25 00:11:11,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8318 to 8173. [2018-10-25 00:11:11,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8173 states. [2018-10-25 00:11:11,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8173 states to 8173 states and 12228 transitions. [2018-10-25 00:11:11,422 INFO L78 Accepts]: Start accepts. Automaton has 8173 states and 12228 transitions. Word has length 210 [2018-10-25 00:11:11,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:11:11,423 INFO L481 AbstractCegarLoop]: Abstraction has 8173 states and 12228 transitions. [2018-10-25 00:11:11,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 00:11:11,423 INFO L276 IsEmpty]: Start isEmpty. Operand 8173 states and 12228 transitions. [2018-10-25 00:11:11,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-10-25 00:11:11,447 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:11:11,447 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:11:11,447 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:11:11,447 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:11:11,448 INFO L82 PathProgramCache]: Analyzing trace with hash 1505272723, now seen corresponding path program 1 times [2018-10-25 00:11:11,448 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:11:11,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:11:11,449 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:11:11,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:11:11,449 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:11:11,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:11:11,892 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 54 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:11:11,893 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:11:11,893 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:11:11,893 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 213 with the following transitions: [2018-10-25 00:11:11,893 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [56], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [821], [823], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:11:11,906 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:11:11,906 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:11:17,163 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 00:11:17,164 INFO L272 AbstractInterpreter]: Visited 175 different actions 527 times. Merged at 7 different actions 25 times. Widened at 1 different actions 1 times. Found 3 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-25 00:11:17,172 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:11:17,172 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 00:11:17,172 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:11:17,172 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 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 00:11:17,180 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:11:17,180 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 00:11:17,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:11:17,350 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 00:11:17,890 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 54 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:11:17,890 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 00:11:18,148 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 54 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:11:18,178 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 00:11:18,178 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2018-10-25 00:11:18,178 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 00:11:18,179 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-25 00:11:18,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-25 00:11:18,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2018-10-25 00:11:18,180 INFO L87 Difference]: Start difference. First operand 8173 states and 12228 transitions. Second operand 9 states. [2018-10-25 00:11:32,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:11:32,098 INFO L93 Difference]: Finished difference Result 66256 states and 136601 transitions. [2018-10-25 00:11:32,102 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-10-25 00:11:32,102 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 212 [2018-10-25 00:11:32,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:11:32,772 INFO L225 Difference]: With dead ends: 66256 [2018-10-25 00:11:32,772 INFO L226 Difference]: Without dead ends: 58297 [2018-10-25 00:11:32,901 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 485 GetRequests, 447 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=312, Invalid=1248, Unknown=0, NotChecked=0, Total=1560 [2018-10-25 00:11:32,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58297 states. [2018-10-25 00:11:35,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58297 to 55365. [2018-10-25 00:11:35,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55365 states. [2018-10-25 00:11:35,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55365 states to 55365 states and 79260 transitions. [2018-10-25 00:11:35,235 INFO L78 Accepts]: Start accepts. Automaton has 55365 states and 79260 transitions. Word has length 212 [2018-10-25 00:11:35,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:11:35,236 INFO L481 AbstractCegarLoop]: Abstraction has 55365 states and 79260 transitions. [2018-10-25 00:11:35,236 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-25 00:11:35,236 INFO L276 IsEmpty]: Start isEmpty. Operand 55365 states and 79260 transitions. [2018-10-25 00:11:35,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2018-10-25 00:11:35,372 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:11:35,372 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:11:35,372 INFO L424 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:11:35,373 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:11:35,373 INFO L82 PathProgramCache]: Analyzing trace with hash -2036604121, now seen corresponding path program 1 times [2018-10-25 00:11:35,373 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:11:35,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:11:35,374 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:11:35,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:11:35,374 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:11:35,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:11:35,880 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 77 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:11:35,880 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:11:35,880 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:11:35,881 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 234 with the following transitions: [2018-10-25 00:11:35,881 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [147], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [821], [823], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:11:35,887 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:11:35,887 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:11:38,599 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 00:11:38,600 INFO L272 AbstractInterpreter]: Visited 175 different actions 342 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-25 00:11:38,605 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:11:38,605 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 00:11:38,605 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:11:38,605 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 00:11:38,613 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:11:38,614 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 00:11:38,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:11:38,801 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 00:11:38,978 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-10-25 00:11:38,978 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 00:11:39,218 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-10-25 00:11:39,533 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-25 00:11:39,533 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 8 [2018-10-25 00:11:39,533 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:11:39,534 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 00:11:39,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 00:11:39,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-10-25 00:11:39,535 INFO L87 Difference]: Start difference. First operand 55365 states and 79260 transitions. Second operand 3 states. [2018-10-25 00:11:41,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:11:41,333 INFO L93 Difference]: Finished difference Result 107961 states and 153617 transitions. [2018-10-25 00:11:41,333 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 00:11:41,333 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 233 [2018-10-25 00:11:41,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:11:41,585 INFO L225 Difference]: With dead ends: 107961 [2018-10-25 00:11:41,585 INFO L226 Difference]: Without dead ends: 66183 [2018-10-25 00:11:41,688 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 471 GetRequests, 465 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-10-25 00:11:41,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66183 states. [2018-10-25 00:11:43,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66183 to 64658. [2018-10-25 00:11:43,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64658 states. [2018-10-25 00:11:43,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64658 states to 64658 states and 92068 transitions. [2018-10-25 00:11:43,179 INFO L78 Accepts]: Start accepts. Automaton has 64658 states and 92068 transitions. Word has length 233 [2018-10-25 00:11:43,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:11:43,180 INFO L481 AbstractCegarLoop]: Abstraction has 64658 states and 92068 transitions. [2018-10-25 00:11:43,180 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 00:11:43,180 INFO L276 IsEmpty]: Start isEmpty. Operand 64658 states and 92068 transitions. [2018-10-25 00:11:43,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-10-25 00:11:43,262 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:11:43,262 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:11:43,262 INFO L424 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:11:43,263 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:11:43,263 INFO L82 PathProgramCache]: Analyzing trace with hash 744626209, now seen corresponding path program 1 times [2018-10-25 00:11:43,263 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:11:43,264 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:11:43,264 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:11:43,264 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:11:43,264 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:11:43,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:11:43,543 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 71 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-25 00:11:43,543 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:11:43,543 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:11:43,544 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 247 with the following transitions: [2018-10-25 00:11:43,544 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [260], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [821], [823], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:11:43,550 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:11:43,550 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:11:44,491 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 00:11:44,491 INFO L272 AbstractInterpreter]: Visited 174 different actions 342 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-25 00:11:44,500 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:11:44,500 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 00:11:46,497 INFO L232 lantSequenceWeakener]: Weakened 243 states. On average, predicates are now at 71.41% of their original sizes. [2018-10-25 00:11:46,497 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 00:11:46,859 INFO L413 sIntCurrentIteration]: We have 245 unified AI predicates [2018-10-25 00:11:46,859 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-25 00:11:46,860 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-25 00:11:46,860 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [6] total 24 [2018-10-25 00:11:46,860 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:11:46,861 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-25 00:11:46,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-25 00:11:46,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2018-10-25 00:11:46,861 INFO L87 Difference]: Start difference. First operand 64658 states and 92068 transitions. Second operand 20 states. [2018-10-25 00:12:49,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:12:49,468 INFO L93 Difference]: Finished difference Result 129271 states and 183818 transitions. [2018-10-25 00:12:49,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-25 00:12:49,468 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 246 [2018-10-25 00:12:49,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:12:49,698 INFO L225 Difference]: With dead ends: 129271 [2018-10-25 00:12:49,698 INFO L226 Difference]: Without dead ends: 64832 [2018-10-25 00:12:49,822 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 254 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=182, Invalid=630, Unknown=0, NotChecked=0, Total=812 [2018-10-25 00:12:49,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64832 states. [2018-10-25 00:12:51,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64832 to 64829. [2018-10-25 00:12:51,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64829 states. [2018-10-25 00:12:51,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64829 states to 64829 states and 91927 transitions. [2018-10-25 00:12:51,278 INFO L78 Accepts]: Start accepts. Automaton has 64829 states and 91927 transitions. Word has length 246 [2018-10-25 00:12:51,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:12:51,278 INFO L481 AbstractCegarLoop]: Abstraction has 64829 states and 91927 transitions. [2018-10-25 00:12:51,278 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-25 00:12:51,279 INFO L276 IsEmpty]: Start isEmpty. Operand 64829 states and 91927 transitions. [2018-10-25 00:12:51,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-10-25 00:12:51,332 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:12:51,333 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:12:51,333 INFO L424 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:12:51,333 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:12:51,334 INFO L82 PathProgramCache]: Analyzing trace with hash 1403817372, now seen corresponding path program 1 times [2018-10-25 00:12:51,334 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:12:51,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:12:51,335 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:12:51,335 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:12:51,335 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:12:51,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:12:51,946 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-25 00:12:52,761 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 95 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:12:52,761 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:12:52,761 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:12:52,762 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 252 with the following transitions: [2018-10-25 00:12:52,762 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [240], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [821], [823], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:12:52,768 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:12:52,768 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:12:55,129 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 00:12:55,130 INFO L272 AbstractInterpreter]: Visited 175 different actions 348 times. Merged at 7 different actions 10 times. Never widened. Found 2 fixpoints after 2 different actions. Largest state had 88 variables. [2018-10-25 00:12:55,139 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:12:55,139 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 00:12:55,139 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:12:55,139 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 00:12:55,146 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:12:55,146 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 00:12:55,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:12:55,324 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 00:12:56,173 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 95 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:12:56,173 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 00:12:56,530 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 80 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:12:56,551 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 00:12:56,552 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 16 [2018-10-25 00:12:56,552 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 00:12:56,552 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-25 00:12:56,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-25 00:12:56,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2018-10-25 00:12:56,553 INFO L87 Difference]: Start difference. First operand 64829 states and 91927 transitions. Second operand 12 states. [2018-10-25 00:13:11,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:13:11,999 INFO L93 Difference]: Finished difference Result 227696 states and 342127 transitions. [2018-10-25 00:13:12,000 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-10-25 00:13:12,000 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 251 [2018-10-25 00:13:12,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:13:12,613 INFO L225 Difference]: With dead ends: 227696 [2018-10-25 00:13:12,613 INFO L226 Difference]: Without dead ends: 163290 [2018-10-25 00:13:12,805 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 615 GetRequests, 517 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3664 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1514, Invalid=8386, Unknown=0, NotChecked=0, Total=9900 [2018-10-25 00:13:12,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163290 states. [2018-10-25 00:13:16,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163290 to 160370. [2018-10-25 00:13:16,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160370 states. [2018-10-25 00:13:17,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160370 states to 160370 states and 210651 transitions. [2018-10-25 00:13:17,029 INFO L78 Accepts]: Start accepts. Automaton has 160370 states and 210651 transitions. Word has length 251 [2018-10-25 00:13:17,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:13:17,030 INFO L481 AbstractCegarLoop]: Abstraction has 160370 states and 210651 transitions. [2018-10-25 00:13:17,030 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-25 00:13:17,030 INFO L276 IsEmpty]: Start isEmpty. Operand 160370 states and 210651 transitions. [2018-10-25 00:13:17,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2018-10-25 00:13:17,164 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:13:17,165 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:13:17,165 INFO L424 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:13:17,165 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:13:17,166 INFO L82 PathProgramCache]: Analyzing trace with hash -1697646380, now seen corresponding path program 1 times [2018-10-25 00:13:17,167 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:13:17,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:13:17,168 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:13:17,168 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:13:17,168 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:13:17,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:13:17,523 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 132 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:13:17,523 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:13:17,524 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:13:17,524 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 291 with the following transitions: [2018-10-25 00:13:17,524 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [409], [412], [416], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [821], [823], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:13:17,529 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:13:17,529 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:13:23,219 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 00:13:23,220 INFO L272 AbstractInterpreter]: Visited 175 different actions 342 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-25 00:13:23,228 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:13:23,228 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 00:13:23,228 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:13:23,228 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 00:13:23,236 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:13:23,236 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 00:13:23,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:13:23,427 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 00:13:23,487 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 132 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:13:23,487 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 00:13:23,751 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 132 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:13:23,773 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 00:13:23,773 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 7 [2018-10-25 00:13:23,773 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 00:13:23,774 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 00:13:23,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 00:13:23,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-25 00:13:23,774 INFO L87 Difference]: Start difference. First operand 160370 states and 210651 transitions. Second operand 6 states. [2018-10-25 00:13:26,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:13:26,632 INFO L93 Difference]: Finished difference Result 298446 states and 392159 transitions. [2018-10-25 00:13:26,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-25 00:13:26,632 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 290 [2018-10-25 00:13:26,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:13:27,029 INFO L225 Difference]: With dead ends: 298446 [2018-10-25 00:13:27,029 INFO L226 Difference]: Without dead ends: 147886 [2018-10-25 00:13:27,686 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 587 GetRequests, 579 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-10-25 00:13:27,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147886 states. [2018-10-25 00:13:30,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147886 to 147151. [2018-10-25 00:13:30,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147151 states. [2018-10-25 00:13:30,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147151 states to 147151 states and 189582 transitions. [2018-10-25 00:13:30,384 INFO L78 Accepts]: Start accepts. Automaton has 147151 states and 189582 transitions. Word has length 290 [2018-10-25 00:13:30,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:13:30,385 INFO L481 AbstractCegarLoop]: Abstraction has 147151 states and 189582 transitions. [2018-10-25 00:13:30,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 00:13:30,385 INFO L276 IsEmpty]: Start isEmpty. Operand 147151 states and 189582 transitions. [2018-10-25 00:13:30,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2018-10-25 00:13:30,462 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:13:30,463 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1] [2018-10-25 00:13:30,463 INFO L424 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:13:30,463 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:13:30,463 INFO L82 PathProgramCache]: Analyzing trace with hash -794164287, now seen corresponding path program 1 times [2018-10-25 00:13:30,464 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:13:30,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:13:30,464 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:13:30,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:13:30,465 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:13:30,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:13:30,795 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 153 proven. 38 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-10-25 00:13:30,795 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:13:30,796 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:13:30,796 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 310 with the following transitions: [2018-10-25 00:13:30,796 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [139], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [315], [318], [322], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [821], [823], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:13:30,800 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:13:30,800 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:13:35,821 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 00:13:35,821 INFO L272 AbstractInterpreter]: Visited 176 different actions 526 times. Merged at 7 different actions 21 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 88 variables. [2018-10-25 00:13:35,834 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:13:35,834 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 00:13:35,834 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:13:35,834 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 00:13:35,843 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:13:35,843 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 00:13:36,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:13:36,068 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 00:13:36,181 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 172 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2018-10-25 00:13:36,181 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 00:13:36,369 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 153 proven. 38 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-10-25 00:13:36,391 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 00:13:36,391 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2018-10-25 00:13:36,391 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 00:13:36,392 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-25 00:13:36,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-25 00:13:36,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2018-10-25 00:13:36,393 INFO L87 Difference]: Start difference. First operand 147151 states and 189582 transitions. Second operand 10 states. Received shutdown request... [2018-10-25 00:13:36,540 WARN L187 SmtUtils]: Removed 1 from assertion stack [2018-10-25 00:13:36,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-25 00:13:36,541 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-25 00:13:36,546 WARN L205 ceAbstractionStarter]: Timeout [2018-10-25 00:13:36,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 12:13:36 BoogieIcfgContainer [2018-10-25 00:13:36,547 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-25 00:13:36,548 INFO L168 Benchmark]: Toolchain (without parser) took 220648.10 ms. Allocated memory was 1.5 GB in the beginning and 4.7 GB in the end (delta: 3.2 GB). Free memory was 1.4 GB in the beginning and 3.0 GB in the end (delta: -1.6 GB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-10-25 00:13:36,550 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-25 00:13:36,550 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1230.35 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. [2018-10-25 00:13:36,551 INFO L168 Benchmark]: Boogie Procedure Inliner took 312.55 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 736.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -858.8 MB). Peak memory consumption was 40.2 MB. Max. memory is 7.1 GB. [2018-10-25 00:13:36,552 INFO L168 Benchmark]: Boogie Preprocessor took 181.12 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: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2018-10-25 00:13:36,556 INFO L168 Benchmark]: RCFGBuilder took 5030.74 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: 249.4 MB). Peak memory consumption was 249.4 MB. Max. memory is 7.1 GB. [2018-10-25 00:13:36,557 INFO L168 Benchmark]: TraceAbstraction took 213885.30 ms. Allocated memory was 2.3 GB in the beginning and 4.7 GB in the end (delta: 2.4 GB). Free memory was 1.9 GB in the beginning and 3.0 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-10-25 00:13:36,562 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1230.35 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 312.55 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 736.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -858.8 MB). Peak memory consumption was 40.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 181.12 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: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5030.74 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: 249.4 MB). Peak memory consumption was 249.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 213885.30 ms. Allocated memory was 2.3 GB in the beginning and 4.7 GB in the end (delta: 2.4 GB). Free memory was 1.9 GB in the beginning and 3.0 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1524]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1524). Cancelled while BasicCegarLoop was constructing difference of abstraction (147151states) and FLOYD_HOARE automaton (currently 6 states, 10 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 14. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 213.8s OverallTime, 14 OverallIterations, 4 TraceHistogramMax, 153.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3466 SDtfs, 17490 SDslu, 3818 SDs, 0 SdLazy, 31295 SolverSat, 5254 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 110.2s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 4107 GetRequests, 3861 SyntacticMatches, 9 SemanticMatches, 236 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4291 ImplicationChecksByTransitivity, 8.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=160370occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 28.8s AbstIntTime, 9 AbstIntIterations, 2 AbstIntStrong, 0.9991732287749099 AbsIntWeakeningRatio, 0.2876712328767123 AbsIntAvgWeakeningVarsNumRemoved, 26.006849315068493 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 13.2s AutomataMinimizationTime, 13 MinimizatonAttempts, 8589 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.5s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 8.8s InterpolantComputationTime, 4768 NumberOfCodeBlocks, 4768 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 6448 ConstructedInterpolants, 0 QuantifiedInterpolants, 3765497 SizeOfPredicates, 31 NumberOfNonLiveVariables, 7600 ConjunctsInSsa, 52 ConjunctsInUnsatCore, 28 InterpolantComputations, 11 PerfectInterpolantSequences, 2022/2146 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown