java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label07_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 03:39:14,331 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 03:39:14,333 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 03:39:14,345 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 03:39:14,345 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 03:39:14,347 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 03:39:14,348 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 03:39:14,350 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 03:39:14,351 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 03:39:14,352 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 03:39:14,353 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 03:39:14,353 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 03:39:14,354 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 03:39:14,355 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 03:39:14,356 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 03:39:14,357 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 03:39:14,358 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 03:39:14,360 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 03:39:14,362 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 03:39:14,364 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 03:39:14,365 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 03:39:14,366 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 03:39:14,368 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-27 03:39:14,374 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 03:39:14,375 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 03:39:14,376 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 03:39:14,376 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 03:39:14,377 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-27 03:39:14,395 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 03:39:14,396 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 03:39:14,396 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 03:39:14,397 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 03:39:14,397 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 03:39:14,397 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 03:39:14,397 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 03:39:14,397 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 03:39:14,398 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 03:39:14,398 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 03:39:14,398 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 03:39:14,398 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 03:39:14,400 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 03:39:14,400 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 03:39:14,400 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 03:39:14,400 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 03:39:14,400 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 03:39:14,403 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 03:39:14,404 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 03:39:14,404 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 03:39:14,404 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 03:39:14,404 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 03:39:14,404 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 03:39:14,405 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 03:39:14,405 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 03:39:14,405 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 03:39:14,405 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 03:39:14,405 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 03:39:14,406 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 03:39:14,406 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 03:39:14,406 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 03:39:14,407 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 03:39:14,407 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 03:39:14,407 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 03:39:14,460 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 03:39:14,473 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 03:39:14,477 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 03:39:14,479 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 03:39:14,479 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 03:39:14,480 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label07_true-unreach-call.c [2018-10-27 03:39:14,541 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/276e293d1/dbff22a76f2a47ef9d504858dceff75d/FLAG8ad0b2612 [2018-10-27 03:39:15,209 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 03:39:15,210 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label07_true-unreach-call.c [2018-10-27 03:39:15,235 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/276e293d1/dbff22a76f2a47ef9d504858dceff75d/FLAG8ad0b2612 [2018-10-27 03:39:15,259 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/276e293d1/dbff22a76f2a47ef9d504858dceff75d [2018-10-27 03:39:15,273 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 03:39:15,276 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 03:39:15,277 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 03:39:15,277 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 03:39:15,285 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 03:39:15,286 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:39:15" (1/1) ... [2018-10-27 03:39:15,289 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63d79500 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:39:15, skipping insertion in model container [2018-10-27 03:39:15,289 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:39:15" (1/1) ... [2018-10-27 03:39:15,302 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 03:39:15,447 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 03:39:16,551 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 03:39:16,556 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 03:39:17,056 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 03:39:17,087 INFO L193 MainTranslator]: Completed translation [2018-10-27 03:39:17,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:39:17 WrapperNode [2018-10-27 03:39:17,088 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 03:39:17,089 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 03:39:17,089 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 03:39:17,090 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 03:39:17,100 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:39:17" (1/1) ... [2018-10-27 03:39:17,154 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:39:17" (1/1) ... [2018-10-27 03:39:17,552 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 03:39:17,553 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 03:39:17,553 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 03:39:17,553 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 03:39:17,565 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:39:17" (1/1) ... [2018-10-27 03:39:17,565 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:39:17" (1/1) ... [2018-10-27 03:39:17,583 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:39:17" (1/1) ... [2018-10-27 03:39:17,584 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:39:17" (1/1) ... [2018-10-27 03:39:17,667 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:39:17" (1/1) ... [2018-10-27 03:39:17,697 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:39:17" (1/1) ... [2018-10-27 03:39:17,720 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:39:17" (1/1) ... [2018-10-27 03:39:17,746 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 03:39:17,747 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 03:39:17,747 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 03:39:17,747 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 03:39:17,748 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:39:17" (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 03:39:17,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 03:39:17,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 03:39:17,826 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-27 03:39:17,826 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-27 03:39:17,826 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 03:39:17,827 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 03:39:17,827 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 03:39:17,827 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 03:39:17,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 03:39:17,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 03:39:17,828 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 03:39:17,828 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 03:39:25,556 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 03:39:25,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:39:25 BoogieIcfgContainer [2018-10-27 03:39:25,560 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 03:39:25,561 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 03:39:25,562 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 03:39:25,566 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 03:39:25,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 03:39:15" (1/3) ... [2018-10-27 03:39:25,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3358bfa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:39:25, skipping insertion in model container [2018-10-27 03:39:25,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:39:17" (2/3) ... [2018-10-27 03:39:25,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3358bfa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:39:25, skipping insertion in model container [2018-10-27 03:39:25,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:39:25" (3/3) ... [2018-10-27 03:39:25,570 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label07_true-unreach-call.c [2018-10-27 03:39:25,580 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 03:39:25,589 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 03:39:25,607 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 03:39:25,654 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 03:39:25,654 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 03:39:25,654 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 03:39:25,654 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 03:39:25,654 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 03:39:25,655 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 03:39:25,655 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 03:39:25,655 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 03:39:25,700 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-10-27 03:39:25,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-10-27 03:39:25,710 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:39:25,711 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] [2018-10-27 03:39:25,713 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:39:25,720 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:39:25,720 INFO L82 PathProgramCache]: Analyzing trace with hash 1715798052, now seen corresponding path program 1 times [2018-10-27 03:39:25,723 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:39:25,784 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:39:25,784 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:39:25,784 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:39:25,785 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:39:25,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:39:26,188 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 03:39:26,329 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 03:39:26,332 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:39:26,332 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 03:39:26,332 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:39:26,340 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 03:39:26,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 03:39:26,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 03:39:26,360 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-10-27 03:39:32,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:39:32,669 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-10-27 03:39:32,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 03:39:32,671 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 54 [2018-10-27 03:39:32,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:39:32,723 INFO L225 Difference]: With dead ends: 2251 [2018-10-27 03:39:32,723 INFO L226 Difference]: Without dead ends: 1474 [2018-10-27 03:39:32,741 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 03:39:32,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-10-27 03:39:32,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-10-27 03:39:32,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-10-27 03:39:32,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2715 transitions. [2018-10-27 03:39:32,911 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2715 transitions. Word has length 54 [2018-10-27 03:39:32,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:39:32,911 INFO L481 AbstractCegarLoop]: Abstraction has 1474 states and 2715 transitions. [2018-10-27 03:39:32,913 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 03:39:32,913 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2715 transitions. [2018-10-27 03:39:32,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-10-27 03:39:32,925 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:39:32,926 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:39:32,926 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:39:32,926 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:39:32,926 INFO L82 PathProgramCache]: Analyzing trace with hash -487278161, now seen corresponding path program 1 times [2018-10-27 03:39:32,927 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:39:32,929 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:39:32,929 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:39:32,930 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:39:32,930 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:39:32,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:39:33,279 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 03:39:33,499 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:39:33,500 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:39:33,500 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 03:39:33,500 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:39:33,502 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 03:39:33,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 03:39:33,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 03:39:33,503 INFO L87 Difference]: Start difference. First operand 1474 states and 2715 transitions. Second operand 5 states. [2018-10-27 03:39:43,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:39:43,025 INFO L93 Difference]: Finished difference Result 4419 states and 8226 transitions. [2018-10-27 03:39:43,028 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 03:39:43,028 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2018-10-27 03:39:43,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:39:43,056 INFO L225 Difference]: With dead ends: 4419 [2018-10-27 03:39:43,056 INFO L226 Difference]: Without dead ends: 2951 [2018-10-27 03:39:43,062 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-27 03:39:43,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2018-10-27 03:39:43,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 2925. [2018-10-27 03:39:43,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2925 states. [2018-10-27 03:39:43,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2925 states to 2925 states and 4901 transitions. [2018-10-27 03:39:43,182 INFO L78 Accepts]: Start accepts. Automaton has 2925 states and 4901 transitions. Word has length 125 [2018-10-27 03:39:43,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:39:43,183 INFO L481 AbstractCegarLoop]: Abstraction has 2925 states and 4901 transitions. [2018-10-27 03:39:43,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 03:39:43,183 INFO L276 IsEmpty]: Start isEmpty. Operand 2925 states and 4901 transitions. [2018-10-27 03:39:43,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-10-27 03:39:43,196 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:39:43,196 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:39:43,196 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:39:43,200 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:39:43,200 INFO L82 PathProgramCache]: Analyzing trace with hash 1895018150, now seen corresponding path program 1 times [2018-10-27 03:39:43,200 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:39:43,201 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:39:43,201 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:39:43,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:39:43,202 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:39:43,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:39:43,433 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:39:43,434 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:39:43,434 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 03:39:43,434 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:39:43,435 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 03:39:43,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 03:39:43,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-27 03:39:43,436 INFO L87 Difference]: Start difference. First operand 2925 states and 4901 transitions. Second operand 6 states. [2018-10-27 03:39:56,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:39:56,850 INFO L93 Difference]: Finished difference Result 11199 states and 19606 transitions. [2018-10-27 03:39:56,852 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-27 03:39:56,852 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 130 [2018-10-27 03:39:56,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:39:56,921 INFO L225 Difference]: With dead ends: 11199 [2018-10-27 03:39:56,922 INFO L226 Difference]: Without dead ends: 8280 [2018-10-27 03:39:56,952 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-27 03:39:56,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8280 states. [2018-10-27 03:39:57,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8280 to 8202. [2018-10-27 03:39:57,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8202 states. [2018-10-27 03:39:57,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8202 states to 8202 states and 12123 transitions. [2018-10-27 03:39:57,236 INFO L78 Accepts]: Start accepts. Automaton has 8202 states and 12123 transitions. Word has length 130 [2018-10-27 03:39:57,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:39:57,237 INFO L481 AbstractCegarLoop]: Abstraction has 8202 states and 12123 transitions. [2018-10-27 03:39:57,237 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 03:39:57,237 INFO L276 IsEmpty]: Start isEmpty. Operand 8202 states and 12123 transitions. [2018-10-27 03:39:57,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-10-27 03:39:57,240 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:39:57,241 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:39:57,241 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:39:57,241 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:39:57,241 INFO L82 PathProgramCache]: Analyzing trace with hash -703578010, now seen corresponding path program 1 times [2018-10-27 03:39:57,242 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:39:57,244 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:39:57,244 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:39:57,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:39:57,245 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:39:57,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:39:57,548 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 03:39:57,959 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:39:57,959 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:39:57,959 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 03:39:57,960 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:39:57,960 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 03:39:57,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 03:39:57,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 03:39:57,962 INFO L87 Difference]: Start difference. First operand 8202 states and 12123 transitions. Second operand 6 states. [2018-10-27 03:40:03,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:40:03,973 INFO L93 Difference]: Finished difference Result 20964 states and 31521 transitions. [2018-10-27 03:40:03,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 03:40:03,973 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 162 [2018-10-27 03:40:03,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:40:04,047 INFO L225 Difference]: With dead ends: 20964 [2018-10-27 03:40:04,051 INFO L226 Difference]: Without dead ends: 12768 [2018-10-27 03:40:04,085 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 03:40:04,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12768 states. [2018-10-27 03:40:04,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12768 to 12710. [2018-10-27 03:40:04,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12710 states. [2018-10-27 03:40:04,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12710 states to 12710 states and 17130 transitions. [2018-10-27 03:40:04,396 INFO L78 Accepts]: Start accepts. Automaton has 12710 states and 17130 transitions. Word has length 162 [2018-10-27 03:40:04,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:40:04,397 INFO L481 AbstractCegarLoop]: Abstraction has 12710 states and 17130 transitions. [2018-10-27 03:40:04,397 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 03:40:04,397 INFO L276 IsEmpty]: Start isEmpty. Operand 12710 states and 17130 transitions. [2018-10-27 03:40:04,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2018-10-27 03:40:04,403 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:40:04,404 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 03:40:04,404 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:40:04,404 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:40:04,404 INFO L82 PathProgramCache]: Analyzing trace with hash 371580129, now seen corresponding path program 1 times [2018-10-27 03:40:04,405 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:40:04,405 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:40:04,406 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:40:04,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:40:04,406 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:40:04,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:40:04,954 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 172 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:40:04,954 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 03:40:04,954 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 03:40:04,955 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 242 with the following transitions: [2018-10-27 03:40:04,959 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1955], [1957], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2156], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2264], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-27 03:40:05,038 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 03:40:05,038 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 03:40:07,737 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 03:40:07,739 INFO L272 AbstractInterpreter]: Visited 112 different actions 112 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 03:40:07,782 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:40:07,782 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 03:40:09,699 INFO L227 lantSequenceWeakener]: Weakened 233 states. On average, predicates are now at 78.06% of their original sizes. [2018-10-27 03:40:09,700 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 03:40:10,001 INFO L415 sIntCurrentIteration]: We unified 240 AI predicates to 240 [2018-10-27 03:40:10,001 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 03:40:10,002 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 03:40:10,002 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-27 03:40:10,003 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:40:10,003 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-27 03:40:10,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-27 03:40:10,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-27 03:40:10,004 INFO L87 Difference]: Start difference. First operand 12710 states and 17130 transitions. Second operand 7 states. [2018-10-27 03:40:17,279 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 03:42:04,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:42:04,354 INFO L93 Difference]: Finished difference Result 26119 states and 35031 transitions. [2018-10-27 03:42:04,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 03:42:04,355 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 241 [2018-10-27 03:42:04,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:42:04,399 INFO L225 Difference]: With dead ends: 26119 [2018-10-27 03:42:04,400 INFO L226 Difference]: Without dead ends: 13415 [2018-10-27 03:42:04,431 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 241 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-27 03:42:04,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13415 states. [2018-10-27 03:42:04,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13415 to 13413. [2018-10-27 03:42:04,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13413 states. [2018-10-27 03:42:04,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13413 states to 13413 states and 17845 transitions. [2018-10-27 03:42:04,718 INFO L78 Accepts]: Start accepts. Automaton has 13413 states and 17845 transitions. Word has length 241 [2018-10-27 03:42:04,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:42:04,719 INFO L481 AbstractCegarLoop]: Abstraction has 13413 states and 17845 transitions. [2018-10-27 03:42:04,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-27 03:42:04,719 INFO L276 IsEmpty]: Start isEmpty. Operand 13413 states and 17845 transitions. [2018-10-27 03:42:04,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2018-10-27 03:42:04,731 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:42:04,732 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:42:04,732 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:42:04,732 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:42:04,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1681609374, now seen corresponding path program 1 times [2018-10-27 03:42:04,733 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:42:04,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:42:04,734 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:42:04,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:42:04,734 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:42:04,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:42:05,554 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 200 proven. 203 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 03:42:05,554 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 03:42:05,554 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 03:42:05,555 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 429 with the following transitions: [2018-10-27 03:42:05,555 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1955], [1957], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2156], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2264], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2584], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-27 03:42:05,570 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 03:42:05,570 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 03:42:17,227 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 03:42:17,228 INFO L272 AbstractInterpreter]: Visited 196 different actions 385 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 03:42:17,234 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:42:17,234 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 03:42:22,218 INFO L227 lantSequenceWeakener]: Weakened 170 states. On average, predicates are now at 77.67% of their original sizes. [2018-10-27 03:42:22,218 INFO L413 sIntCurrentIteration]: Unifying AI predicates Received shutdown request... [2018-10-27 03:42:48,579 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 03:42:48,583 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 03:42:48,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 03:42:48 BoogieIcfgContainer [2018-10-27 03:42:48,584 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 03:42:48,585 INFO L168 Benchmark]: Toolchain (without parser) took 213310.99 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -344.2 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-10-27 03:42:48,586 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 03:42:48,587 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1811.32 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: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-10-27 03:42:48,588 INFO L168 Benchmark]: Boogie Procedure Inliner took 463.54 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 806.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -982.5 MB). Peak memory consumption was 45.0 MB. Max. memory is 7.1 GB. [2018-10-27 03:42:48,589 INFO L168 Benchmark]: Boogie Preprocessor took 193.46 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: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. [2018-10-27 03:42:48,590 INFO L168 Benchmark]: RCFGBuilder took 7813.41 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 515.3 MB). Peak memory consumption was 515.3 MB. Max. memory is 7.1 GB. [2018-10-27 03:42:48,590 INFO L168 Benchmark]: TraceAbstraction took 203022.78 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.7 GB in the beginning and 1.8 GB in the end (delta: -39.3 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-10-27 03:42:48,596 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1811.32 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: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 463.54 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 806.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -982.5 MB). Peak memory consumption was 45.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 193.46 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: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7813.41 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 515.3 MB). Peak memory consumption was 515.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 203022.78 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.7 GB in the beginning and 1.8 GB in the end (delta: -39.3 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 150]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 150). Cancelled while BasicCegarLoop was analyzing trace of length 429 with TraceHistMax 4,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 15 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 202.9s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 150.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1343 SDtfs, 10358 SDslu, 862 SDs, 0 SdLazy, 19614 SolverSat, 4456 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 95.5s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 276 GetRequests, 244 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13413occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 14.5s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9963360710948872 AbsIntWeakeningRatio, 0.08695652173913043 AbsIntAvgWeakeningVarsNumRemoved, 337.62068965517244 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 164 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 712 NumberOfCodeBlocks, 712 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 707 ConstructedInterpolants, 0 QuantifiedInterpolants, 388470 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 313/315 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown