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/Problem10_label28_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 23:25:23,280 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 23:25:23,282 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 23:25:23,297 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 23:25:23,297 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 23:25:23,299 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 23:25:23,300 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 23:25:23,303 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 23:25:23,306 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 23:25:23,307 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 23:25:23,308 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 23:25:23,308 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 23:25:23,310 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 23:25:23,317 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 23:25:23,319 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 23:25:23,320 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 23:25:23,321 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 23:25:23,323 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 23:25:23,326 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 23:25:23,328 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 23:25:23,329 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 23:25:23,331 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 23:25:23,335 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 23:25:23,336 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 23:25:23,336 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 23:25:23,337 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 23:25:23,337 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 23:25:23,341 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 23:25:23,341 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 23:25:23,343 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 23:25:23,343 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 23:25:23,344 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-24 23:25:23,348 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 [2018-10-24 23:25:23,379 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 23:25:23,379 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 23:25:23,381 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 23:25:23,381 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 23:25:23,381 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 23:25:23,381 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 23:25:23,382 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-24 23:25:23,382 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 23:25:23,382 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-24 23:25:23,382 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 23:25:23,382 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 23:25:23,382 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 23:25:23,383 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 23:25:23,383 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 23:25:23,383 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 23:25:23,384 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 23:25:23,384 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 23:25:23,384 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 23:25:23,384 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 23:25:23,384 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 23:25:23,385 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 23:25:23,385 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 23:25:23,385 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 23:25:23,385 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 23:25:23,385 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 23:25:23,386 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 23:25:23,386 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 23:25:23,386 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 23:25:23,386 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 23:25:23,386 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 23:25:23,387 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 23:25:23,387 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 23:25:23,387 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 23:25:23,387 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 23:25:23,387 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 23:25:23,387 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 23:25:23,435 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 23:25:23,447 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 23:25:23,451 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 23:25:23,453 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 23:25:23,453 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 23:25:23,454 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label28_false-unreach-call.c [2018-10-24 23:25:23,513 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c5ef0686e/14ee8bfbdb5849cea9368f1cede96b89/FLAGac794bd0f [2018-10-24 23:25:24,065 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 23:25:24,066 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label28_false-unreach-call.c [2018-10-24 23:25:24,082 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c5ef0686e/14ee8bfbdb5849cea9368f1cede96b89/FLAGac794bd0f [2018-10-24 23:25:24,099 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c5ef0686e/14ee8bfbdb5849cea9368f1cede96b89 [2018-10-24 23:25:24,114 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 23:25:24,118 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 23:25:24,119 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 23:25:24,119 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 23:25:24,123 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 23:25:24,125 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:25:24" (1/1) ... [2018-10-24 23:25:24,128 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3880cdf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:25:24, skipping insertion in model container [2018-10-24 23:25:24,128 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:25:24" (1/1) ... [2018-10-24 23:25:24,141 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 23:25:24,206 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 23:25:24,766 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 23:25:24,771 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 23:25:24,907 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 23:25:24,926 INFO L193 MainTranslator]: Completed translation [2018-10-24 23:25:24,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:25:24 WrapperNode [2018-10-24 23:25:24,926 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 23:25:24,927 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 23:25:24,928 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 23:25:24,928 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 23:25:24,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:25:24" (1/1) ... [2018-10-24 23:25:24,959 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:25:24" (1/1) ... [2018-10-24 23:25:25,136 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 23:25:25,137 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 23:25:25,137 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 23:25:25,137 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 23:25:25,148 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:25:24" (1/1) ... [2018-10-24 23:25:25,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:25:24" (1/1) ... [2018-10-24 23:25:25,155 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:25:24" (1/1) ... [2018-10-24 23:25:25,156 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:25:24" (1/1) ... [2018-10-24 23:25:25,180 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:25:24" (1/1) ... [2018-10-24 23:25:25,193 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:25:24" (1/1) ... [2018-10-24 23:25:25,212 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:25:24" (1/1) ... [2018-10-24 23:25:25,227 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 23:25:25,228 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 23:25:25,228 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 23:25:25,228 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 23:25:25,229 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:25:24" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 23:25:25,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 23:25:25,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 23:25:25,306 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 23:25:25,306 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 23:25:25,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 23:25:25,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 23:25:25,307 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 23:25:25,307 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 23:25:28,571 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 23:25:28,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:25:28 BoogieIcfgContainer [2018-10-24 23:25:28,572 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 23:25:28,574 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 23:25:28,575 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 23:25:28,578 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 23:25:28,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:25:24" (1/3) ... [2018-10-24 23:25:28,579 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c68c1d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:25:28, skipping insertion in model container [2018-10-24 23:25:28,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:25:24" (2/3) ... [2018-10-24 23:25:28,579 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c68c1d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:25:28, skipping insertion in model container [2018-10-24 23:25:28,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:25:28" (3/3) ... [2018-10-24 23:25:28,582 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label28_false-unreach-call.c [2018-10-24 23:25:28,590 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 23:25:28,597 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 23:25:28,615 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 23:25:28,659 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 23:25:28,659 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 23:25:28,659 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 23:25:28,660 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 23:25:28,660 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 23:25:28,660 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 23:25:28,660 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 23:25:28,661 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 23:25:28,688 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2018-10-24 23:25:28,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-24 23:25:28,696 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:25:28,697 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 23:25:28,700 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:25:28,706 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:25:28,707 INFO L82 PathProgramCache]: Analyzing trace with hash 1764811988, now seen corresponding path program 1 times [2018-10-24 23:25:28,709 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:25:28,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:25:28,756 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:25:28,756 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:25:28,756 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:25:28,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:25:29,090 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 23:25:29,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:25:29,200 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:25:29,201 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 23:25:29,202 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:25:29,209 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 23:25:29,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 23:25:29,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 23:25:29,230 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 3 states. [2018-10-24 23:25:31,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:25:31,133 INFO L93 Difference]: Finished difference Result 574 states and 992 transitions. [2018-10-24 23:25:31,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 23:25:31,138 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2018-10-24 23:25:31,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:25:31,159 INFO L225 Difference]: With dead ends: 574 [2018-10-24 23:25:31,160 INFO L226 Difference]: Without dead ends: 356 [2018-10-24 23:25:31,168 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 [2018-10-24 23:25:31,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2018-10-24 23:25:31,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2018-10-24 23:25:31,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2018-10-24 23:25:31,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 609 transitions. [2018-10-24 23:25:31,257 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 609 transitions. Word has length 18 [2018-10-24 23:25:31,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:25:31,257 INFO L481 AbstractCegarLoop]: Abstraction has 356 states and 609 transitions. [2018-10-24 23:25:31,258 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 23:25:31,258 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 609 transitions. [2018-10-24 23:25:31,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-10-24 23:25:31,263 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:25:31,264 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 23:25:31,264 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:25:31,265 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:25:31,265 INFO L82 PathProgramCache]: Analyzing trace with hash 498515883, now seen corresponding path program 1 times [2018-10-24 23:25:31,265 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:25:31,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:25:31,267 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:25:31,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:25:31,267 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:25:31,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:25:31,674 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:25:31,674 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:25:31,675 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 23:25:31,675 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:25:31,677 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 23:25:31,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 23:25:31,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 23:25:31,678 INFO L87 Difference]: Start difference. First operand 356 states and 609 transitions. Second operand 5 states. [2018-10-24 23:25:34,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:25:34,563 INFO L93 Difference]: Finished difference Result 1290 states and 2315 transitions. [2018-10-24 23:25:34,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 23:25:34,564 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2018-10-24 23:25:34,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:25:34,573 INFO L225 Difference]: With dead ends: 1290 [2018-10-24 23:25:34,573 INFO L226 Difference]: Without dead ends: 940 [2018-10-24 23:25:34,578 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 23:25:34,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 940 states. [2018-10-24 23:25:34,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 940 to 925. [2018-10-24 23:25:34,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 925 states. [2018-10-24 23:25:34,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 925 states to 925 states and 1443 transitions. [2018-10-24 23:25:34,643 INFO L78 Accepts]: Start accepts. Automaton has 925 states and 1443 transitions. Word has length 101 [2018-10-24 23:25:34,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:25:34,644 INFO L481 AbstractCegarLoop]: Abstraction has 925 states and 1443 transitions. [2018-10-24 23:25:34,644 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 23:25:34,644 INFO L276 IsEmpty]: Start isEmpty. Operand 925 states and 1443 transitions. [2018-10-24 23:25:34,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-10-24 23:25:34,649 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:25:34,650 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 23:25:34,650 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:25:34,650 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:25:34,650 INFO L82 PathProgramCache]: Analyzing trace with hash 1789374603, now seen corresponding path program 1 times [2018-10-24 23:25:34,651 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:25:34,652 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:25:34,652 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:25:34,652 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:25:34,652 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:25:34,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:25:34,962 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:25:34,962 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:25:34,963 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 23:25:34,963 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:25:34,963 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 23:25:34,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 23:25:34,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 23:25:34,964 INFO L87 Difference]: Start difference. First operand 925 states and 1443 transitions. Second operand 6 states. [2018-10-24 23:25:39,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:25:39,512 INFO L93 Difference]: Finished difference Result 2535 states and 4089 transitions. [2018-10-24 23:25:39,515 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 23:25:39,515 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 117 [2018-10-24 23:25:39,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:25:39,533 INFO L225 Difference]: With dead ends: 2535 [2018-10-24 23:25:39,533 INFO L226 Difference]: Without dead ends: 1616 [2018-10-24 23:25:39,541 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 23:25:39,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1616 states. [2018-10-24 23:25:39,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1616 to 1585. [2018-10-24 23:25:39,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1585 states. [2018-10-24 23:25:39,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 2320 transitions. [2018-10-24 23:25:39,618 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 2320 transitions. Word has length 117 [2018-10-24 23:25:39,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:25:39,619 INFO L481 AbstractCegarLoop]: Abstraction has 1585 states and 2320 transitions. [2018-10-24 23:25:39,619 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 23:25:39,619 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 2320 transitions. [2018-10-24 23:25:39,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-10-24 23:25:39,631 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:25:39,632 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 23:25:39,632 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:25:39,632 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:25:39,633 INFO L82 PathProgramCache]: Analyzing trace with hash 674683355, now seen corresponding path program 1 times [2018-10-24 23:25:39,633 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:25:39,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:25:39,634 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:25:39,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:25:39,635 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:25:39,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:25:40,007 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 23:25:40,409 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:25:40,409 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:25:40,409 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 23:25:40,410 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:25:40,412 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 23:25:40,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 23:25:40,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 23:25:40,414 INFO L87 Difference]: Start difference. First operand 1585 states and 2320 transitions. Second operand 6 states. [2018-10-24 23:25:41,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:25:41,819 INFO L93 Difference]: Finished difference Result 3506 states and 5314 transitions. [2018-10-24 23:25:41,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 23:25:41,826 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 141 [2018-10-24 23:25:41,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:25:41,845 INFO L225 Difference]: With dead ends: 3506 [2018-10-24 23:25:41,845 INFO L226 Difference]: Without dead ends: 1927 [2018-10-24 23:25:41,852 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 23:25:41,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1927 states. [2018-10-24 23:25:41,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1927 to 1888. [2018-10-24 23:25:41,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1888 states. [2018-10-24 23:25:41,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1888 states to 1888 states and 2674 transitions. [2018-10-24 23:25:41,926 INFO L78 Accepts]: Start accepts. Automaton has 1888 states and 2674 transitions. Word has length 141 [2018-10-24 23:25:41,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:25:41,926 INFO L481 AbstractCegarLoop]: Abstraction has 1888 states and 2674 transitions. [2018-10-24 23:25:41,926 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 23:25:41,927 INFO L276 IsEmpty]: Start isEmpty. Operand 1888 states and 2674 transitions. [2018-10-24 23:25:41,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-10-24 23:25:41,934 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:25:41,935 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 23:25:41,935 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:25:41,935 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:25:41,935 INFO L82 PathProgramCache]: Analyzing trace with hash 307682743, now seen corresponding path program 1 times [2018-10-24 23:25:41,936 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:25:41,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:25:41,937 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:25:41,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:25:41,937 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:25:41,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:25:42,388 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-24 23:25:42,797 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 100 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:25:42,797 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:25:42,797 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 23:25:42,799 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 182 with the following transitions: [2018-10-24 23:25:42,800 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [45], [47], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [534], [535], [539], [543], [546], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-24 23:25:42,851 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 23:25:42,851 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 23:25:43,899 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 23:25:43,900 INFO L272 AbstractInterpreter]: Visited 92 different actions 182 times. Merged at 7 different actions 10 times. Never widened. Found 2 fixpoints after 2 different actions. Largest state had 24 variables. [2018-10-24 23:25:43,944 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:25:43,946 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 23:25:43,946 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:25:43,947 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 [2018-10-24 23:25:43,958 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:25:43,959 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 23:25:44,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:25:44,064 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 23:25:44,816 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 100 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:25:44,816 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 23:25:45,325 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 100 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:25:45,349 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 23:25:45,350 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 5] total 17 [2018-10-24 23:25:45,350 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 23:25:45,351 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-24 23:25:45,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-24 23:25:45,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2018-10-24 23:25:45,351 INFO L87 Difference]: Start difference. First operand 1888 states and 2674 transitions. Second operand 15 states. [2018-10-24 23:25:46,130 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-24 23:25:47,686 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 32 [2018-10-24 23:25:54,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:25:54,162 INFO L93 Difference]: Finished difference Result 7075 states and 11059 transitions. [2018-10-24 23:25:54,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-10-24 23:25:54,163 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 181 [2018-10-24 23:25:54,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:25:54,201 INFO L225 Difference]: With dead ends: 7075 [2018-10-24 23:25:54,201 INFO L226 Difference]: Without dead ends: 4729 [2018-10-24 23:25:54,242 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 377 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=567, Invalid=1689, Unknown=0, NotChecked=0, Total=2256 [2018-10-24 23:25:54,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4729 states. [2018-10-24 23:25:54,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4729 to 4309. [2018-10-24 23:25:54,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4309 states. [2018-10-24 23:25:54,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4309 states to 4309 states and 5606 transitions. [2018-10-24 23:25:54,417 INFO L78 Accepts]: Start accepts. Automaton has 4309 states and 5606 transitions. Word has length 181 [2018-10-24 23:25:54,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:25:54,418 INFO L481 AbstractCegarLoop]: Abstraction has 4309 states and 5606 transitions. [2018-10-24 23:25:54,418 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-24 23:25:54,418 INFO L276 IsEmpty]: Start isEmpty. Operand 4309 states and 5606 transitions. [2018-10-24 23:25:54,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-10-24 23:25:54,428 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:25:54,428 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 23:25:54,429 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:25:54,429 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:25:54,429 INFO L82 PathProgramCache]: Analyzing trace with hash -1498956685, now seen corresponding path program 1 times [2018-10-24 23:25:54,429 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:25:54,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:25:54,432 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:25:54,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:25:54,433 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:25:54,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:25:55,043 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 22 proven. 73 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 23:25:55,044 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:25:55,044 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 23:25:55,044 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 196 with the following transitions: [2018-10-24 23:25:55,048 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [45], [47], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [526], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [610], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-24 23:25:55,057 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 23:25:55,057 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 23:25:55,474 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 23:25:55,475 INFO L272 AbstractInterpreter]: Visited 104 different actions 104 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 23:25:55,509 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:25:55,509 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 23:25:56,136 INFO L232 lantSequenceWeakener]: Weakened 186 states. On average, predicates are now at 72.67% of their original sizes. [2018-10-24 23:25:56,136 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 23:25:56,414 INFO L413 sIntCurrentIteration]: We have 194 unified AI predicates [2018-10-24 23:25:56,414 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 23:25:56,415 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 23:25:56,415 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2018-10-24 23:25:56,415 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:25:56,416 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 23:25:56,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 23:25:56,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 23:25:56,418 INFO L87 Difference]: Start difference. First operand 4309 states and 5606 transitions. Second operand 6 states. [2018-10-24 23:26:33,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:26:33,861 INFO L93 Difference]: Finished difference Result 8748 states and 11357 transitions. [2018-10-24 23:26:33,861 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 23:26:33,861 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 195 [2018-10-24 23:26:33,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:26:33,883 INFO L225 Difference]: With dead ends: 8748 [2018-10-24 23:26:33,883 INFO L226 Difference]: Without dead ends: 4450 [2018-10-24 23:26:33,900 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 195 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-24 23:26:33,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4450 states. [2018-10-24 23:26:33,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4450 to 4448. [2018-10-24 23:26:33,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4448 states. [2018-10-24 23:26:34,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4448 states to 4448 states and 5744 transitions. [2018-10-24 23:26:34,007 INFO L78 Accepts]: Start accepts. Automaton has 4448 states and 5744 transitions. Word has length 195 [2018-10-24 23:26:34,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:26:34,008 INFO L481 AbstractCegarLoop]: Abstraction has 4448 states and 5744 transitions. [2018-10-24 23:26:34,008 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 23:26:34,008 INFO L276 IsEmpty]: Start isEmpty. Operand 4448 states and 5744 transitions. [2018-10-24 23:26:34,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2018-10-24 23:26:34,021 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:26:34,022 INFO L375 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 23:26:34,022 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:26:34,023 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:26:34,023 INFO L82 PathProgramCache]: Analyzing trace with hash 187954724, now seen corresponding path program 1 times [2018-10-24 23:26:34,023 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:26:34,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:26:34,024 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:26:34,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:26:34,024 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:26:34,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:26:35,091 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 99 proven. 145 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-10-24 23:26:35,092 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:26:35,092 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 23:26:35,092 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 267 with the following transitions: [2018-10-24 23:26:35,092 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [45], [47], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [498], [499], [503], [507], [511], [515], [519], [523], [526], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [610], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-24 23:26:35,097 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 23:26:35,097 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 23:26:36,172 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 23:26:36,173 INFO L272 AbstractInterpreter]: Visited 109 different actions 539 times. Merged at 8 different actions 42 times. Widened at 1 different actions 2 times. Found 7 fixpoints after 3 different actions. Largest state had 24 variables. [2018-10-24 23:26:36,209 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:26:36,210 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 23:26:36,210 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:26:36,210 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 [2018-10-24 23:26:36,218 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:26:36,218 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 23:26:36,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:26:36,305 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 23:26:36,424 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 239 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-10-24 23:26:36,424 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 23:26:36,806 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 107 proven. 77 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-10-24 23:26:36,831 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 23:26:36,832 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 13 [2018-10-24 23:26:36,832 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 23:26:36,832 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-24 23:26:36,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-24 23:26:36,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-10-24 23:26:36,833 INFO L87 Difference]: Start difference. First operand 4448 states and 5744 transitions. Second operand 12 states. [2018-10-24 23:26:41,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:26:41,772 INFO L93 Difference]: Finished difference Result 9366 states and 12559 transitions. [2018-10-24 23:26:41,773 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-24 23:26:41,773 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 266 [2018-10-24 23:26:41,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:26:41,797 INFO L225 Difference]: With dead ends: 9366 [2018-10-24 23:26:41,798 INFO L226 Difference]: Without dead ends: 5098 [2018-10-24 23:26:41,823 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 566 GetRequests, 540 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=169, Invalid=431, Unknown=0, NotChecked=0, Total=600 [2018-10-24 23:26:41,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5098 states. [2018-10-24 23:26:41,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5098 to 4322. [2018-10-24 23:26:41,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4322 states. [2018-10-24 23:26:41,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4322 states to 4322 states and 5114 transitions. [2018-10-24 23:26:41,944 INFO L78 Accepts]: Start accepts. Automaton has 4322 states and 5114 transitions. Word has length 266 [2018-10-24 23:26:41,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:26:41,945 INFO L481 AbstractCegarLoop]: Abstraction has 4322 states and 5114 transitions. [2018-10-24 23:26:41,945 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-24 23:26:41,945 INFO L276 IsEmpty]: Start isEmpty. Operand 4322 states and 5114 transitions. [2018-10-24 23:26:41,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2018-10-24 23:26:41,959 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:26:41,960 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 23:26:41,960 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:26:41,960 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:26:41,960 INFO L82 PathProgramCache]: Analyzing trace with hash 1680817671, now seen corresponding path program 1 times [2018-10-24 23:26:41,961 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:26:41,962 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:26:41,962 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:26:41,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:26:41,963 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:26:42,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:26:42,471 WARN L179 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 8 [2018-10-24 23:26:42,773 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 39 proven. 241 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-10-24 23:26:42,774 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:26:42,774 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 23:26:42,774 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 312 with the following transitions: [2018-10-24 23:26:42,774 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [45], [47], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [526], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [610], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [678], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-24 23:26:42,779 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 23:26:42,779 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 23:26:43,488 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 23:26:43,488 INFO L272 AbstractInterpreter]: Visited 126 different actions 381 times. Merged at 8 different actions 27 times. Never widened. Found 5 fixpoints after 3 different actions. Largest state had 24 variables. [2018-10-24 23:26:43,496 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:26:43,496 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 23:26:43,496 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:26:43,496 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 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 [2018-10-24 23:26:43,504 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:26:43,505 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 23:26:43,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:26:43,593 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 23:26:44,211 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 35 [2018-10-24 23:26:44,485 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 274 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-10-24 23:26:44,486 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 23:26:45,525 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2018-10-24 23:26:45,530 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:45,990 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 304 [2018-10-24 23:27:32,508 WARN L177 XnfTransformerHelper]: Simplifying conjuction of 22859 disjunctions. This might take some time... [2018-10-24 23:27:32,711 INFO L193 XnfTransformerHelper]: Simplified to conjuction of 22 disjunctions. [2018-10-24 23:27:33,015 WARN L179 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 50 [2018-10-24 23:27:33,020 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,024 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,028 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,032 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,036 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,040 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,044 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,051 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,055 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,059 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,066 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,070 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,073 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,077 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,082 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,085 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,089 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,092 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,096 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,099 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,103 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,106 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,110 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,113 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,117 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,120 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,124 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,127 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,130 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,134 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,137 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,141 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,145 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,148 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,152 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,156 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,160 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,164 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,168 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,171 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,175 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,179 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,182 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,186 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,189 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,193 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,196 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,200 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,204 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,208 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,212 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,216 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,219 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,223 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,227 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,231 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,234 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,238 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,242 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,245 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,249 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,253 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,257 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,260 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,264 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,268 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,272 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,276 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,280 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,284 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,288 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,292 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,296 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,299 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,303 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,307 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,311 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,315 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,319 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,322 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,326 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,330 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,334 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,337 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,341 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,345 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,349 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,353 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,357 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,361 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,364 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,368 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,372 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,376 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,380 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,384 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,387 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,391 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,395 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,399 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,403 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,407 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,411 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,415 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,419 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,422 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,426 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:33,430 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:27:34,615 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 39 proven. 244 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 23:27:34,635 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 23:27:34,636 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 21 [2018-10-24 23:27:34,636 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 23:27:34,637 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-24 23:27:34,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-24 23:27:34,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2018-10-24 23:27:34,637 INFO L87 Difference]: Start difference. First operand 4322 states and 5114 transitions. Second operand 16 states. [2018-10-24 23:27:42,109 WARN L179 SmtUtils]: Spent 4.13 s on a formula simplification. DAG size of input: 52 DAG size of output: 29 [2018-10-24 23:27:53,469 WARN L179 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 14 [2018-10-24 23:28:24,777 WARN L179 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 39 [2018-10-24 23:28:54,936 WARN L179 SmtUtils]: Spent 2.07 s on a formula simplification. DAG size of input: 44 DAG size of output: 30 Received shutdown request... [2018-10-24 23:29:13,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-10-24 23:29:13,734 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 23:29:13,739 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 23:29:13,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 11:29:13 BoogieIcfgContainer [2018-10-24 23:29:13,740 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 23:29:13,740 INFO L168 Benchmark]: Toolchain (without parser) took 229625.38 ms. Allocated memory was 1.5 GB in the beginning and 5.0 GB in the end (delta: 3.4 GB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -540.2 MB). Peak memory consumption was 2.9 GB. Max. memory is 7.1 GB. [2018-10-24 23:29:13,742 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 23:29:13,742 INFO L168 Benchmark]: CACSL2BoogieTranslator took 808.32 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-10-24 23:29:13,743 INFO L168 Benchmark]: Boogie Procedure Inliner took 209.03 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 748.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -821.8 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. [2018-10-24 23:29:13,744 INFO L168 Benchmark]: Boogie Preprocessor took 90.65 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 23:29:13,748 INFO L168 Benchmark]: RCFGBuilder took 3344.65 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 119.2 MB). Peak memory consumption was 119.2 MB. Max. memory is 7.1 GB. [2018-10-24 23:29:13,749 INFO L168 Benchmark]: TraceAbstraction took 225165.35 ms. Allocated memory was 2.3 GB in the beginning and 5.0 GB in the end (delta: 2.7 GB). Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 120.1 MB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. [2018-10-24 23:29:13,759 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 808.32 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 209.03 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 748.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -821.8 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 90.65 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 3344.65 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 119.2 MB). Peak memory consumption was 119.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 225165.35 ms. Allocated memory was 2.3 GB in the beginning and 5.0 GB in the end (delta: 2.7 GB). Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 120.1 MB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 37]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 37). Cancelled while BasicCegarLoop was constructing difference of abstraction (4322states) and FLOYD_HOARE automaton (currently 43 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (9114 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 216 locations, 1 error locations. TIMEOUT Result, 225.0s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 161.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 866 SDtfs, 8457 SDslu, 1809 SDs, 0 SdLazy, 17268 SolverSat, 3016 SolverUnsat, 36 SolverUnknown, 0 SolverNotchecked, 135.1s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 1921 GetRequests, 1759 SyntacticMatches, 12 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1402 ImplicationChecksByTransitivity, 16.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4448occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 3.4s AbstIntTime, 4 AbstIntIterations, 1 AbstIntStrong, 0.9970980050876959 AbsIntWeakeningRatio, 0.13402061855670103 AbsIntAvgWeakeningVarsNumRemoved, 15.18041237113402 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 7 MinimizatonAttempts, 1283 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 57.1s InterpolantComputationTime, 2088 NumberOfCodeBlocks, 2088 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 2832 ConstructedInterpolants, 126 QuantifiedInterpolants, 6899107 SizeOfPredicates, 2 NumberOfNonLiveVariables, 1358 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 14 InterpolantComputations, 4 PerfectInterpolantSequences, 1272/2062 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown