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/Problem11_label02_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 07:30:43,292 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 07:30:43,294 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 07:30:43,310 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 07:30:43,310 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 07:30:43,312 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 07:30:43,313 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 07:30:43,315 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 07:30:43,317 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 07:30:43,324 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 07:30:43,326 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 07:30:43,326 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 07:30:43,327 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 07:30:43,328 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 07:30:43,331 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 07:30:43,332 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 07:30:43,332 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 07:30:43,335 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 07:30:43,340 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 07:30:43,343 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 07:30:43,345 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 07:30:43,346 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 07:30:43,348 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 07:30:43,349 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 07:30:43,349 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 07:30:43,350 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 07:30:43,350 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 07:30:43,352 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 07:30:43,353 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 07:30:43,354 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 07:30:43,355 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 07:30:43,356 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-27 07:30:43,359 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-27 07:30:43,387 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 07:30:43,387 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 07:30:43,388 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 07:30:43,388 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 07:30:43,388 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 07:30:43,389 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 07:30:43,389 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-27 07:30:43,389 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 07:30:43,389 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 07:30:43,389 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 07:30:43,390 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 07:30:43,390 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 07:30:43,390 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 07:30:43,390 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 07:30:43,391 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 07:30:43,391 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 07:30:43,391 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 07:30:43,391 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 07:30:43,392 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 07:30:43,392 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 07:30:43,392 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 07:30:43,392 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 07:30:43,392 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 07:30:43,393 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 07:30:43,393 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 07:30:43,393 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 07:30:43,393 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 07:30:43,393 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 07:30:43,394 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 07:30:43,394 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 07:30:43,394 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 07:30:43,394 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 07:30:43,394 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 07:30:43,395 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 07:30:43,395 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 07:30:43,395 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 07:30:43,437 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 07:30:43,450 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 07:30:43,453 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 07:30:43,455 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 07:30:43,455 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 07:30:43,456 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label02_true-unreach-call.c [2018-10-27 07:30:43,512 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d02794ec7/4a52aecd1d2d45ca81426cd68e238072/FLAG12a8a96dd [2018-10-27 07:30:44,094 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 07:30:44,095 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label02_true-unreach-call.c [2018-10-27 07:30:44,112 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d02794ec7/4a52aecd1d2d45ca81426cd68e238072/FLAG12a8a96dd [2018-10-27 07:30:44,135 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d02794ec7/4a52aecd1d2d45ca81426cd68e238072 [2018-10-27 07:30:44,144 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 07:30:44,145 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 07:30:44,146 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 07:30:44,147 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 07:30:44,151 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 07:30:44,153 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:30:44" (1/1) ... [2018-10-27 07:30:44,156 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a443da6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:30:44, skipping insertion in model container [2018-10-27 07:30:44,156 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:30:44" (1/1) ... [2018-10-27 07:30:44,167 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 07:30:44,254 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 07:30:44,859 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 07:30:44,863 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 07:30:45,019 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 07:30:45,038 INFO L193 MainTranslator]: Completed translation [2018-10-27 07:30:45,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:30:45 WrapperNode [2018-10-27 07:30:45,038 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 07:30:45,039 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 07:30:45,040 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 07:30:45,040 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 07:30:45,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:30:45" (1/1) ... [2018-10-27 07:30:45,087 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:30:45" (1/1) ... [2018-10-27 07:30:45,323 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 07:30:45,324 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 07:30:45,324 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 07:30:45,324 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 07:30:45,335 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:30:45" (1/1) ... [2018-10-27 07:30:45,335 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:30:45" (1/1) ... [2018-10-27 07:30:45,345 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:30:45" (1/1) ... [2018-10-27 07:30:45,346 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:30:45" (1/1) ... [2018-10-27 07:30:45,397 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:30:45" (1/1) ... [2018-10-27 07:30:45,422 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:30:45" (1/1) ... [2018-10-27 07:30:45,437 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:30:45" (1/1) ... [2018-10-27 07:30:45,449 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 07:30:45,450 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 07:30:45,450 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 07:30:45,450 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 07:30:45,451 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:30:45" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 07:30:45,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 07:30:45,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 07:30:45,519 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 07:30:45,519 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 07:30:45,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 07:30:45,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 07:30:45,520 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 07:30:45,520 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 07:30:49,645 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 07:30:49,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:30:49 BoogieIcfgContainer [2018-10-27 07:30:49,646 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 07:30:49,647 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 07:30:49,647 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 07:30:49,650 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 07:30:49,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 07:30:44" (1/3) ... [2018-10-27 07:30:49,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a4c5c94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:30:49, skipping insertion in model container [2018-10-27 07:30:49,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:30:45" (2/3) ... [2018-10-27 07:30:49,655 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a4c5c94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:30:49, skipping insertion in model container [2018-10-27 07:30:49,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:30:49" (3/3) ... [2018-10-27 07:30:49,657 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label02_true-unreach-call.c [2018-10-27 07:30:49,667 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 07:30:49,677 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 07:30:49,699 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 07:30:49,748 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 07:30:49,748 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 07:30:49,748 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 07:30:49,748 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 07:30:49,748 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 07:30:49,749 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 07:30:49,749 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 07:30:49,749 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 07:30:49,784 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-10-27 07:30:49,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-10-27 07:30:49,796 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:30:49,798 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] [2018-10-27 07:30:49,800 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:30:49,806 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:30:49,806 INFO L82 PathProgramCache]: Analyzing trace with hash -1008235991, now seen corresponding path program 1 times [2018-10-27 07:30:49,808 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:30:49,861 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:30:49,861 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:30:49,861 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:30:49,862 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:30:50,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:30:50,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:30:50,352 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 07:30:50,353 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 07:30:50,353 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:30:50,359 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 07:30:50,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 07:30:50,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 07:30:50,379 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-10-27 07:30:53,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:30:53,388 INFO L93 Difference]: Finished difference Result 985 states and 1761 transitions. [2018-10-27 07:30:53,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 07:30:53,389 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2018-10-27 07:30:53,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:30:53,413 INFO L225 Difference]: With dead ends: 985 [2018-10-27 07:30:53,413 INFO L226 Difference]: Without dead ends: 686 [2018-10-27 07:30:53,424 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 07:30:53,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2018-10-27 07:30:53,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 686. [2018-10-27 07:30:53,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 686 states. [2018-10-27 07:30:53,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 1046 transitions. [2018-10-27 07:30:53,571 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 1046 transitions. Word has length 61 [2018-10-27 07:30:53,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:30:53,572 INFO L481 AbstractCegarLoop]: Abstraction has 686 states and 1046 transitions. [2018-10-27 07:30:53,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 07:30:53,572 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 1046 transitions. [2018-10-27 07:30:53,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-10-27 07:30:53,583 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:30:53,584 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 07:30:53,584 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:30:53,584 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:30:53,585 INFO L82 PathProgramCache]: Analyzing trace with hash 512006507, now seen corresponding path program 1 times [2018-10-27 07:30:53,585 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:30:53,586 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:30:53,586 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:30:53,587 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:30:53,587 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:30:53,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:30:53,945 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:30:53,945 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 07:30:53,945 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 07:30:53,946 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:30:53,948 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 07:30:53,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 07:30:53,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-27 07:30:53,949 INFO L87 Difference]: Start difference. First operand 686 states and 1046 transitions. Second operand 6 states. [2018-10-27 07:31:00,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:31:00,353 INFO L93 Difference]: Finished difference Result 2340 states and 3736 transitions. [2018-10-27 07:31:00,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 07:31:00,354 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 142 [2018-10-27 07:31:00,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:31:00,368 INFO L225 Difference]: With dead ends: 2340 [2018-10-27 07:31:00,368 INFO L226 Difference]: Without dead ends: 1660 [2018-10-27 07:31:00,373 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-27 07:31:00,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1660 states. [2018-10-27 07:31:00,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1660 to 1641. [2018-10-27 07:31:00,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1641 states. [2018-10-27 07:31:00,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1641 states to 1641 states and 2355 transitions. [2018-10-27 07:31:00,454 INFO L78 Accepts]: Start accepts. Automaton has 1641 states and 2355 transitions. Word has length 142 [2018-10-27 07:31:00,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:31:00,455 INFO L481 AbstractCegarLoop]: Abstraction has 1641 states and 2355 transitions. [2018-10-27 07:31:00,455 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 07:31:00,455 INFO L276 IsEmpty]: Start isEmpty. Operand 1641 states and 2355 transitions. [2018-10-27 07:31:00,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-10-27 07:31:00,467 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:31:00,467 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 07:31:00,467 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:31:00,467 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:31:00,468 INFO L82 PathProgramCache]: Analyzing trace with hash -1402056089, now seen corresponding path program 1 times [2018-10-27 07:31:00,468 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:31:00,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:31:00,469 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:31:00,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:31:00,469 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:31:00,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:31:00,694 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:31:00,695 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 07:31:00,695 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 07:31:00,695 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:31:00,696 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 07:31:00,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 07:31:00,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 07:31:00,697 INFO L87 Difference]: Start difference. First operand 1641 states and 2355 transitions. Second operand 4 states. [2018-10-27 07:31:03,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:31:03,369 INFO L93 Difference]: Finished difference Result 6235 states and 9307 transitions. [2018-10-27 07:31:03,373 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 07:31:03,374 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 156 [2018-10-27 07:31:03,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:31:03,406 INFO L225 Difference]: With dead ends: 6235 [2018-10-27 07:31:03,407 INFO L226 Difference]: Without dead ends: 4600 [2018-10-27 07:31:03,423 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 07:31:03,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4600 states. [2018-10-27 07:31:03,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4600 to 4575. [2018-10-27 07:31:03,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4575 states. [2018-10-27 07:31:03,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4575 states to 4575 states and 6360 transitions. [2018-10-27 07:31:03,559 INFO L78 Accepts]: Start accepts. Automaton has 4575 states and 6360 transitions. Word has length 156 [2018-10-27 07:31:03,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:31:03,560 INFO L481 AbstractCegarLoop]: Abstraction has 4575 states and 6360 transitions. [2018-10-27 07:31:03,560 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 07:31:03,560 INFO L276 IsEmpty]: Start isEmpty. Operand 4575 states and 6360 transitions. [2018-10-27 07:31:03,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2018-10-27 07:31:03,564 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:31:03,565 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 07:31:03,565 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:31:03,565 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:31:03,565 INFO L82 PathProgramCache]: Analyzing trace with hash -1808581075, now seen corresponding path program 1 times [2018-10-27 07:31:03,566 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:31:03,566 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:31:03,567 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:31:03,567 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:31:03,567 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:31:03,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:31:03,866 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 48 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:31:03,866 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:31:03,866 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 07:31:03,868 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 194 with the following transitions: [2018-10-27 07:31:03,870 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [389], [391], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-27 07:31:03,921 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 07:31:03,922 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 07:31:05,301 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 07:31:05,303 INFO L272 AbstractInterpreter]: Visited 140 different actions 406 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-10-27 07:31:05,346 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:31:05,348 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 07:31:05,348 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:31:05,348 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 07:31:05,369 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:31:05,369 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 07:31:05,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:31:05,484 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 07:31:05,668 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:31:05,668 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 07:31:06,187 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:31:06,220 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-27 07:31:06,220 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2018-10-27 07:31:06,221 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:31:06,221 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 07:31:06,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 07:31:06,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-10-27 07:31:06,222 INFO L87 Difference]: Start difference. First operand 4575 states and 6360 transitions. Second operand 3 states. [2018-10-27 07:31:08,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:31:08,388 INFO L93 Difference]: Finished difference Result 11273 states and 16210 transitions. [2018-10-27 07:31:08,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 07:31:08,391 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 193 [2018-10-27 07:31:08,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:31:08,439 INFO L225 Difference]: With dead ends: 11273 [2018-10-27 07:31:08,439 INFO L226 Difference]: Without dead ends: 6893 [2018-10-27 07:31:08,471 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 386 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-10-27 07:31:08,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6893 states. [2018-10-27 07:31:08,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6893 to 6699. [2018-10-27 07:31:08,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6699 states. [2018-10-27 07:31:08,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6699 states to 6699 states and 9059 transitions. [2018-10-27 07:31:08,656 INFO L78 Accepts]: Start accepts. Automaton has 6699 states and 9059 transitions. Word has length 193 [2018-10-27 07:31:08,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:31:08,657 INFO L481 AbstractCegarLoop]: Abstraction has 6699 states and 9059 transitions. [2018-10-27 07:31:08,657 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 07:31:08,657 INFO L276 IsEmpty]: Start isEmpty. Operand 6699 states and 9059 transitions. [2018-10-27 07:31:08,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2018-10-27 07:31:08,670 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:31:08,672 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 07:31:08,673 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:31:08,673 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:31:08,673 INFO L82 PathProgramCache]: Analyzing trace with hash 1389847326, now seen corresponding path program 1 times [2018-10-27 07:31:08,673 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:31:08,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:31:08,674 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:31:08,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:31:08,675 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:31:08,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:31:09,828 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 158 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:31:09,829 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:31:09,829 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 07:31:09,829 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 299 with the following transitions: [2018-10-27 07:31:09,830 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [389], [391], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [641], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-27 07:31:09,836 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 07:31:09,836 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 07:31:10,634 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 07:31:10,634 INFO L272 AbstractInterpreter]: Visited 141 different actions 418 times. Merged at 7 different actions 18 times. Never widened. Found 3 fixpoints after 3 different actions. Largest state had 28 variables. [2018-10-27 07:31:10,669 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:31:10,670 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 07:31:10,670 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:31:10,670 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 07:31:10,681 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:31:10,681 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 07:31:10,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:31:10,800 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 07:31:12,211 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 113 proven. 2 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2018-10-27 07:31:12,212 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 07:31:12,457 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-27 07:31:13,048 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 113 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:31:13,079 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 07:31:13,080 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 7, 8] total 24 [2018-10-27 07:31:13,080 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 07:31:13,081 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-27 07:31:13,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-27 07:31:13,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=470, Unknown=0, NotChecked=0, Total=552 [2018-10-27 07:31:13,082 INFO L87 Difference]: Start difference. First operand 6699 states and 9059 transitions. Second operand 19 states. [2018-10-27 07:31:13,668 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 28 [2018-10-27 07:31:18,411 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 32 [2018-10-27 07:31:41,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:31:41,515 INFO L93 Difference]: Finished difference Result 25193 states and 41301 transitions. [2018-10-27 07:31:41,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-10-27 07:31:41,516 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 298 [2018-10-27 07:31:41,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:31:41,629 INFO L225 Difference]: With dead ends: 25193 [2018-10-27 07:31:41,629 INFO L226 Difference]: Without dead ends: 17939 [2018-10-27 07:31:41,723 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 741 GetRequests, 607 SyntacticMatches, 3 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6383 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=2544, Invalid=15012, Unknown=0, NotChecked=0, Total=17556 [2018-10-27 07:31:41,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17939 states. [2018-10-27 07:31:42,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17939 to 16836. [2018-10-27 07:31:42,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16836 states. [2018-10-27 07:31:42,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16836 states to 16836 states and 21723 transitions. [2018-10-27 07:31:42,280 INFO L78 Accepts]: Start accepts. Automaton has 16836 states and 21723 transitions. Word has length 298 [2018-10-27 07:31:42,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:31:42,281 INFO L481 AbstractCegarLoop]: Abstraction has 16836 states and 21723 transitions. [2018-10-27 07:31:42,281 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-27 07:31:42,281 INFO L276 IsEmpty]: Start isEmpty. Operand 16836 states and 21723 transitions. [2018-10-27 07:31:42,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2018-10-27 07:31:42,322 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:31:42,323 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 07:31:42,323 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:31:42,323 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:31:42,324 INFO L82 PathProgramCache]: Analyzing trace with hash 391462463, now seen corresponding path program 1 times [2018-10-27 07:31:42,324 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:31:42,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:31:42,325 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:31:42,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:31:42,325 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:31:42,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:31:42,949 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 168 proven. 206 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2018-10-27 07:31:42,950 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:31:42,950 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 07:31:42,950 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 407 with the following transitions: [2018-10-27 07:31:42,951 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [389], [391], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [641], [642], [646], [650], [653], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-27 07:31:42,956 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 07:31:42,956 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 07:31:43,757 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 07:31:43,757 INFO L272 AbstractInterpreter]: Visited 142 different actions 564 times. Merged at 8 different actions 30 times. Never widened. Found 7 fixpoints after 2 different actions. Largest state had 28 variables. [2018-10-27 07:31:43,792 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:31:43,792 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 07:31:43,792 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:31:43,792 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 [2018-10-27 07:31:43,805 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:31:43,805 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 07:31:43,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:31:43,929 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 07:31:46,020 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 13 [2018-10-27 07:31:46,381 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 318 proven. 107 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2018-10-27 07:31:46,381 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 07:31:46,837 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 273 proven. 104 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2018-10-27 07:31:46,858 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 07:31:46,858 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 5] total 12 [2018-10-27 07:31:46,858 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 07:31:46,859 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-27 07:31:46,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-27 07:31:46,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=96, Unknown=2, NotChecked=0, Total=132 [2018-10-27 07:31:46,860 INFO L87 Difference]: Start difference. First operand 16836 states and 21723 transitions. Second operand 10 states. [2018-10-27 07:31:51,849 WARN L179 SmtUtils]: Spent 523.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-10-27 07:33:54,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:33:54,547 INFO L93 Difference]: Finished difference Result 49521 states and 72776 transitions. [2018-10-27 07:33:54,547 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-27 07:33:54,547 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 406 [2018-10-27 07:33:54,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:33:54,735 INFO L225 Difference]: With dead ends: 49521 [2018-10-27 07:33:54,735 INFO L226 Difference]: Without dead ends: 33072 [2018-10-27 07:33:54,816 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 854 GetRequests, 823 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 13.7s TimeCoverageRelationStatistics Valid=210, Invalid=589, Unknown=13, NotChecked=0, Total=812 [2018-10-27 07:33:54,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33072 states. [2018-10-27 07:33:55,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33072 to 32401. [2018-10-27 07:33:55,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32401 states. [2018-10-27 07:33:56,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32401 states to 32401 states and 43792 transitions. [2018-10-27 07:33:56,189 INFO L78 Accepts]: Start accepts. Automaton has 32401 states and 43792 transitions. Word has length 406 [2018-10-27 07:33:56,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:33:56,190 INFO L481 AbstractCegarLoop]: Abstraction has 32401 states and 43792 transitions. [2018-10-27 07:33:56,190 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-27 07:33:56,190 INFO L276 IsEmpty]: Start isEmpty. Operand 32401 states and 43792 transitions. [2018-10-27 07:33:56,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2018-10-27 07:33:56,314 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:33:56,315 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 07:33:56,315 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:33:56,316 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:33:56,316 INFO L82 PathProgramCache]: Analyzing trace with hash -1251224200, now seen corresponding path program 1 times [2018-10-27 07:33:56,316 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:33:56,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:33:56,317 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:33:56,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:33:56,317 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:33:56,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:33:57,297 INFO L134 CoverageAnalysis]: Checked inductivity of 804 backedges. 227 proven. 382 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2018-10-27 07:33:57,297 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:33:57,298 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 07:33:57,299 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 508 with the following transitions: [2018-10-27 07:33:57,299 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [389], [391], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [641], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [777], [781], [785], [789], [793], [797], [808], [811], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-27 07:33:57,308 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 07:33:57,309 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 07:33:58,159 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 07:33:58,159 INFO L272 AbstractInterpreter]: Visited 148 different actions 592 times. Merged at 9 different actions 35 times. Never widened. Found 8 fixpoints after 3 different actions. Largest state had 28 variables. [2018-10-27 07:33:58,189 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:33:58,189 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 07:33:58,189 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:33:58,189 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 [2018-10-27 07:33:58,203 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:33:58,204 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 07:33:58,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:33:58,358 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 07:33:59,160 WARN L179 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-27 07:33:59,330 INFO L134 CoverageAnalysis]: Checked inductivity of 804 backedges. 517 proven. 2 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2018-10-27 07:33:59,330 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 07:33:59,508 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 24 [2018-10-27 07:33:59,731 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2018-10-27 07:34:00,787 INFO L134 CoverageAnalysis]: Checked inductivity of 804 backedges. 517 proven. 2 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2018-10-27 07:34:00,808 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 07:34:00,808 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2018-10-27 07:34:00,808 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 07:34:00,809 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-27 07:34:00,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-27 07:34:00,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2018-10-27 07:34:00,810 INFO L87 Difference]: Start difference. First operand 32401 states and 43792 transitions. Second operand 10 states. [2018-10-27 07:34:10,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:34:10,454 INFO L93 Difference]: Finished difference Result 73735 states and 103291 transitions. [2018-10-27 07:34:10,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-10-27 07:34:10,455 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 507 [2018-10-27 07:34:10,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:34:10,629 INFO L225 Difference]: With dead ends: 73735 [2018-10-27 07:34:10,629 INFO L226 Difference]: Without dead ends: 41723 [2018-10-27 07:34:10,748 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1089 GetRequests, 1043 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 600 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=396, Invalid=1766, Unknown=0, NotChecked=0, Total=2162 [2018-10-27 07:34:10,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41723 states. [2018-10-27 07:34:11,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41723 to 41504. [2018-10-27 07:34:11,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41504 states. [2018-10-27 07:34:12,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41504 states to 41504 states and 55518 transitions. [2018-10-27 07:34:12,050 INFO L78 Accepts]: Start accepts. Automaton has 41504 states and 55518 transitions. Word has length 507 [2018-10-27 07:34:12,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:34:12,051 INFO L481 AbstractCegarLoop]: Abstraction has 41504 states and 55518 transitions. [2018-10-27 07:34:12,051 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-27 07:34:12,051 INFO L276 IsEmpty]: Start isEmpty. Operand 41504 states and 55518 transitions. [2018-10-27 07:34:12,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 519 [2018-10-27 07:34:12,181 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:34:12,181 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-27 07:34:12,182 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:34:12,182 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:34:12,182 INFO L82 PathProgramCache]: Analyzing trace with hash -635554679, now seen corresponding path program 1 times [2018-10-27 07:34:12,182 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:34:12,183 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:34:12,183 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:34:12,183 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:34:12,183 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:34:12,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:34:13,419 INFO L134 CoverageAnalysis]: Checked inductivity of 814 backedges. 394 proven. 294 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2018-10-27 07:34:13,419 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:34:13,419 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 07:34:13,419 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 519 with the following transitions: [2018-10-27 07:34:13,420 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [389], [391], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [641], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [750], [751], [762], [766], [777], [781], [785], [789], [793], [797], [800], [803], [807], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-27 07:34:13,424 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 07:34:13,424 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 07:34:14,238 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 07:34:14,238 INFO L272 AbstractInterpreter]: Visited 149 different actions 743 times. Merged at 9 different actions 48 times. Widened at 1 different actions 2 times. Found 11 fixpoints after 3 different actions. Largest state had 28 variables. [2018-10-27 07:34:14,275 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:34:14,276 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 07:34:14,276 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:34:14,276 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 [2018-10-27 07:34:14,288 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:34:14,288 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 07:34:14,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:34:14,439 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 07:34:14,798 INFO L134 CoverageAnalysis]: Checked inductivity of 814 backedges. 517 proven. 2 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2018-10-27 07:34:14,799 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 07:34:15,976 INFO L134 CoverageAnalysis]: Checked inductivity of 814 backedges. 517 proven. 2 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2018-10-27 07:34:15,998 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 07:34:15,998 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 6, 6] total 21 [2018-10-27 07:34:15,998 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 07:34:15,999 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-27 07:34:16,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-27 07:34:16,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2018-10-27 07:34:16,000 INFO L87 Difference]: Start difference. First operand 41504 states and 55518 transitions. Second operand 19 states. [2018-10-27 07:34:18,609 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 28 [2018-10-27 07:34:26,360 WARN L179 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-27 07:34:39,018 WARN L179 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-10-27 07:34:42,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:34:42,000 INFO L93 Difference]: Finished difference Result 97855 states and 149460 transitions. [2018-10-27 07:34:42,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-10-27 07:34:42,001 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 518 [2018-10-27 07:34:42,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:34:42,406 INFO L225 Difference]: With dead ends: 97855 [2018-10-27 07:34:42,406 INFO L226 Difference]: Without dead ends: 56546 [2018-10-27 07:34:42,628 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1192 GetRequests, 1092 SyntacticMatches, 2 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3425 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1673, Invalid=8227, Unknown=0, NotChecked=0, Total=9900 [2018-10-27 07:34:42,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56546 states. [2018-10-27 07:34:44,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56546 to 53978. [2018-10-27 07:34:44,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53978 states. [2018-10-27 07:34:44,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53978 states to 53978 states and 67922 transitions. [2018-10-27 07:34:44,917 INFO L78 Accepts]: Start accepts. Automaton has 53978 states and 67922 transitions. Word has length 518 [2018-10-27 07:34:44,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:34:44,918 INFO L481 AbstractCegarLoop]: Abstraction has 53978 states and 67922 transitions. [2018-10-27 07:34:44,918 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-27 07:34:44,918 INFO L276 IsEmpty]: Start isEmpty. Operand 53978 states and 67922 transitions. [2018-10-27 07:34:45,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 519 [2018-10-27 07:34:45,019 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:34:45,019 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-27 07:34:45,020 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:34:45,020 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:34:45,021 INFO L82 PathProgramCache]: Analyzing trace with hash 1736162187, now seen corresponding path program 1 times [2018-10-27 07:34:45,021 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:34:45,021 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:34:45,022 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:34:45,022 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:34:45,022 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:34:45,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:34:45,481 INFO L134 CoverageAnalysis]: Checked inductivity of 814 backedges. 232 proven. 2 refuted. 0 times theorem prover too weak. 580 trivial. 0 not checked. [2018-10-27 07:34:45,481 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:34:45,481 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 07:34:45,482 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 519 with the following transitions: [2018-10-27 07:34:45,482 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [389], [391], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [641], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [750], [751], [762], [766], [777], [781], [785], [789], [793], [797], [800], [805], [807], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-27 07:34:45,485 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 07:34:45,486 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 07:34:46,456 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 07:34:46,457 INFO L272 AbstractInterpreter]: Visited 149 different actions 742 times. Merged at 9 different actions 47 times. Widened at 1 different actions 2 times. Found 11 fixpoints after 2 different actions. Largest state had 28 variables. [2018-10-27 07:34:46,496 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:34:46,496 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 07:34:46,496 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:34:46,496 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 [2018-10-27 07:34:46,506 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:34:46,507 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 07:34:46,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:34:46,649 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 07:34:46,760 INFO L134 CoverageAnalysis]: Checked inductivity of 814 backedges. 462 proven. 0 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2018-10-27 07:34:46,760 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 07:34:46,881 INFO L134 CoverageAnalysis]: Checked inductivity of 814 backedges. 232 proven. 2 refuted. 0 times theorem prover too weak. 580 trivial. 0 not checked. [2018-10-27 07:34:46,902 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-27 07:34:46,902 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 3 [2018-10-27 07:34:46,902 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:34:46,903 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 07:34:46,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 07:34:46,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 07:34:46,903 INFO L87 Difference]: Start difference. First operand 53978 states and 67922 transitions. Second operand 3 states. [2018-10-27 07:34:48,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:34:48,718 INFO L93 Difference]: Finished difference Result 118052 states and 151275 transitions. [2018-10-27 07:34:48,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 07:34:48,719 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 518 [2018-10-27 07:34:48,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:34:49,578 INFO L225 Difference]: With dead ends: 118052 [2018-10-27 07:34:49,579 INFO L226 Difference]: Without dead ends: 53431 [2018-10-27 07:34:49,695 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1038 GetRequests, 1037 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 07:34:49,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53431 states. Received shutdown request... [2018-10-27 07:34:50,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53431 to 53429. [2018-10-27 07:34:50,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53429 states. [2018-10-27 07:34:50,543 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 07:34:50,550 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 07:34:50,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 07:34:50 BoogieIcfgContainer [2018-10-27 07:34:50,550 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 07:34:50,551 INFO L168 Benchmark]: Toolchain (without parser) took 246406.33 ms. Allocated memory was 1.5 GB in the beginning and 3.7 GB in the end (delta: 2.2 GB). Free memory was 1.4 GB in the beginning and 2.4 GB in the end (delta: -924.9 MB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. [2018-10-27 07:34:50,552 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 07:34:50,553 INFO L168 Benchmark]: CACSL2BoogieTranslator took 892.49 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 66.1 MB). Peak memory consumption was 66.1 MB. Max. memory is 7.1 GB. [2018-10-27 07:34:50,553 INFO L168 Benchmark]: Boogie Procedure Inliner took 284.04 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 735.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -827.9 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2018-10-27 07:34:50,554 INFO L168 Benchmark]: Boogie Preprocessor took 125.98 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 07:34:50,555 INFO L168 Benchmark]: RCFGBuilder took 4195.97 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 190.3 MB). Peak memory consumption was 190.3 MB. Max. memory is 7.1 GB. [2018-10-27 07:34:50,556 INFO L168 Benchmark]: TraceAbstraction took 240903.35 ms. Allocated memory was 2.3 GB in the beginning and 3.7 GB in the end (delta: 1.4 GB). Free memory was 2.0 GB in the beginning and 2.4 GB in the end (delta: -353.5 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2018-10-27 07:34:50,561 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 892.49 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 66.1 MB). Peak memory consumption was 66.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 284.04 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 735.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -827.9 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 125.98 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 4195.97 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 190.3 MB). Peak memory consumption was 190.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 240903.35 ms. Allocated memory was 2.3 GB in the beginning and 3.7 GB in the end (delta: 1.4 GB). Free memory was 2.0 GB in the beginning and 2.4 GB in the end (delta: -353.5 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 168]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 168). Cancelled while ReachableStatesComputation was computing reachable states (1 states constructedinput type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 240.8s OverallTime, 9 OverallIterations, 5 TraceHistogramMax, 210.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2238 SDtfs, 33385 SDslu, 3666 SDs, 0 SdLazy, 42707 SolverSat, 13428 SolverUnsat, 78 SolverUnknown, 0 SolverNotchecked, 170.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5328 GetRequests, 4998 SyntacticMatches, 12 SemanticMatches, 318 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10562 ImplicationChecksByTransitivity, 28.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=53978occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 5.9s AbstIntTime, 6 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 6.8s AutomataMinimizationTime, 9 MinimizatonAttempts, 4799 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 14.1s InterpolantComputationTime, 5239 NumberOfCodeBlocks, 5239 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 7658 ConstructedInterpolants, 3 QuantifiedInterpolants, 13264434 SizeOfPredicates, 5 NumberOfNonLiveVariables, 3938 ConjunctsInSsa, 42 ConjunctsInUnsatCore, 21 InterpolantComputations, 6 PerfectInterpolantSequences, 8377/9645 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown