java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label04_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 19:09:22,366 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 19:09:22,368 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 19:09:22,380 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 19:09:22,381 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 19:09:22,382 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 19:09:22,383 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 19:09:22,385 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 19:09:22,387 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 19:09:22,387 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 19:09:22,388 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 19:09:22,389 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 19:09:22,390 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 19:09:22,391 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 19:09:22,392 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 19:09:22,393 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 19:09:22,394 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 19:09:22,396 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 19:09:22,398 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 19:09:22,400 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 19:09:22,401 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 19:09:22,402 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 19:09:22,405 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 19:09:22,405 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 19:09:22,405 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 19:09:22,406 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 19:09:22,407 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 19:09:22,408 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 19:09:22,409 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 19:09:22,410 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 19:09:22,410 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 19:09:22,411 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 19:09:22,411 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 19:09:22,411 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 19:09:22,412 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 19:09:22,413 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 19:09:22,413 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-12 19:09:22,434 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 19:09:22,434 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 19:09:22,435 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 19:09:22,435 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 19:09:22,436 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 19:09:22,436 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 19:09:22,436 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 19:09:22,436 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 19:09:22,436 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 19:09:22,436 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 19:09:22,437 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 19:09:22,437 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 19:09:22,437 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 19:09:22,438 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 19:09:22,438 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 19:09:22,438 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 19:09:22,438 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 19:09:22,438 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 19:09:22,439 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 19:09:22,439 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 19:09:22,439 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 19:09:22,439 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 19:09:22,439 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 19:09:22,440 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 19:09:22,440 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 19:09:22,440 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 19:09:22,440 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 19:09:22,440 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 19:09:22,441 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 19:09:22,441 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 19:09:22,441 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 19:09:22,441 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 19:09:22,441 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 19:09:22,442 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 19:09:22,442 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 19:09:22,496 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 19:09:22,508 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 19:09:22,511 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 19:09:22,512 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 19:09:22,512 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 19:09:22,513 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label04_true-unreach-call.c [2018-11-12 19:09:22,577 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17c231932/67c4bb6234374bada28d84b9bd0730de/FLAGe2f0ded7b [2018-11-12 19:09:23,217 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 19:09:23,218 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label04_true-unreach-call.c [2018-11-12 19:09:23,243 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17c231932/67c4bb6234374bada28d84b9bd0730de/FLAGe2f0ded7b [2018-11-12 19:09:23,264 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17c231932/67c4bb6234374bada28d84b9bd0730de [2018-11-12 19:09:23,277 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 19:09:23,278 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 19:09:23,280 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 19:09:23,280 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 19:09:23,284 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 19:09:23,285 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 07:09:23" (1/1) ... [2018-11-12 19:09:23,288 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57d0c9b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:09:23, skipping insertion in model container [2018-11-12 19:09:23,288 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 07:09:23" (1/1) ... [2018-11-12 19:09:23,300 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 19:09:23,403 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 19:09:24,331 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 19:09:24,336 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 19:09:24,618 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 19:09:24,639 INFO L193 MainTranslator]: Completed translation [2018-11-12 19:09:24,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:09:24 WrapperNode [2018-11-12 19:09:24,640 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 19:09:24,641 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 19:09:24,641 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 19:09:24,641 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 19:09:24,797 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:09:24" (1/1) ... [2018-11-12 19:09:24,833 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:09:24" (1/1) ... [2018-11-12 19:09:24,841 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 19:09:24,841 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 19:09:24,841 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 19:09:24,841 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 19:09:24,857 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:09:24" (1/1) ... [2018-11-12 19:09:24,858 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:09:24" (1/1) ... [2018-11-12 19:09:24,867 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:09:24" (1/1) ... [2018-11-12 19:09:24,868 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:09:24" (1/1) ... [2018-11-12 19:09:24,940 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:09:24" (1/1) ... [2018-11-12 19:09:24,959 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:09:24" (1/1) ... [2018-11-12 19:09:24,985 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:09:24" (1/1) ... [2018-11-12 19:09:25,011 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 19:09:25,011 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 19:09:25,012 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 19:09:25,012 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 19:09:25,013 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:09:24" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-12 19:09:25,084 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 19:09:25,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 19:09:25,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 19:09:25,085 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-12 19:09:25,085 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-12 19:09:25,085 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 19:09:25,085 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 19:09:25,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 19:09:25,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 19:09:25,086 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 19:09:25,086 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 19:09:32,100 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 19:09:32,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 07:09:32 BoogieIcfgContainer [2018-11-12 19:09:32,101 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 19:09:32,102 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 19:09:32,102 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 19:09:32,105 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 19:09:32,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 07:09:23" (1/3) ... [2018-11-12 19:09:32,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@655d032 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 07:09:32, skipping insertion in model container [2018-11-12 19:09:32,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:09:24" (2/3) ... [2018-11-12 19:09:32,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@655d032 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 07:09:32, skipping insertion in model container [2018-11-12 19:09:32,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 07:09:32" (3/3) ... [2018-11-12 19:09:32,109 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label04_true-unreach-call.c [2018-11-12 19:09:32,117 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 19:09:32,126 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 19:09:32,145 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 19:09:32,189 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 19:09:32,189 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 19:09:32,189 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 19:09:32,190 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 19:09:32,190 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 19:09:32,190 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 19:09:32,190 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 19:09:32,190 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 19:09:32,229 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-11-12 19:09:32,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-11-12 19:09:32,237 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:09:32,238 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] [2018-11-12 19:09:32,241 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:09:32,247 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:09:32,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1812068772, now seen corresponding path program 1 times [2018-11-12 19:09:32,250 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:09:32,304 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:09:32,304 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:09:32,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:09:32,305 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:09:32,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:09:32,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:09:32,754 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:09:32,755 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 19:09:32,755 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:09:32,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 19:09:32,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 19:09:32,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 19:09:32,781 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-11-12 19:09:38,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:09:38,969 INFO L93 Difference]: Finished difference Result 1514 states and 2777 transitions. [2018-11-12 19:09:38,969 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 19:09:38,970 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2018-11-12 19:09:38,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:09:38,997 INFO L225 Difference]: With dead ends: 1514 [2018-11-12 19:09:38,997 INFO L226 Difference]: Without dead ends: 1070 [2018-11-12 19:09:39,006 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 19:09:39,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1070 states. [2018-11-12 19:09:39,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1070 to 1068. [2018-11-12 19:09:39,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2018-11-12 19:09:39,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1675 transitions. [2018-11-12 19:09:39,142 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1675 transitions. Word has length 38 [2018-11-12 19:09:39,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:09:39,142 INFO L480 AbstractCegarLoop]: Abstraction has 1068 states and 1675 transitions. [2018-11-12 19:09:39,143 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 19:09:39,143 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1675 transitions. [2018-11-12 19:09:39,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-11-12 19:09:39,149 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:09:39,149 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:09:39,150 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:09:39,150 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:09:39,150 INFO L82 PathProgramCache]: Analyzing trace with hash 1548201903, now seen corresponding path program 1 times [2018-11-12 19:09:39,150 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:09:39,152 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:09:39,152 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:09:39,152 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:09:39,152 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:09:39,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:09:39,474 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:09:39,474 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:09:39,474 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 19:09:39,474 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:09:39,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 19:09:39,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 19:09:39,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 19:09:39,480 INFO L87 Difference]: Start difference. First operand 1068 states and 1675 transitions. Second operand 4 states. [2018-11-12 19:09:45,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:09:45,027 INFO L93 Difference]: Finished difference Result 3988 states and 6459 transitions. [2018-11-12 19:09:45,029 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 19:09:45,029 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 108 [2018-11-12 19:09:45,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:09:45,056 INFO L225 Difference]: With dead ends: 3988 [2018-11-12 19:09:45,057 INFO L226 Difference]: Without dead ends: 2926 [2018-11-12 19:09:45,068 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 19:09:45,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2926 states. [2018-11-12 19:09:45,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2926 to 2613. [2018-11-12 19:09:45,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2613 states. [2018-11-12 19:09:45,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2613 states to 2613 states and 3832 transitions. [2018-11-12 19:09:45,173 INFO L78 Accepts]: Start accepts. Automaton has 2613 states and 3832 transitions. Word has length 108 [2018-11-12 19:09:45,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:09:45,174 INFO L480 AbstractCegarLoop]: Abstraction has 2613 states and 3832 transitions. [2018-11-12 19:09:45,174 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 19:09:45,174 INFO L276 IsEmpty]: Start isEmpty. Operand 2613 states and 3832 transitions. [2018-11-12 19:09:45,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2018-11-12 19:09:45,188 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:09:45,189 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:09:45,189 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:09:45,189 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:09:45,190 INFO L82 PathProgramCache]: Analyzing trace with hash 1266247063, now seen corresponding path program 1 times [2018-11-12 19:09:45,190 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:09:45,191 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:09:45,191 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:09:45,191 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:09:45,191 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:09:45,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:09:45,653 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 101 proven. 237 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-11-12 19:09:45,653 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:09:45,653 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:09:45,654 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 315 with the following transitions: [2018-11-12 19:09:45,657 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [277], [279], [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], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [613], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [714], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-12 19:09:45,761 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:09:45,762 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:09:46,307 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:09:48,143 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:09:48,146 INFO L272 AbstractInterpreter]: Visited 109 different actions 726 times. Merged at 5 different actions 29 times. Widened at 1 different actions 2 times. Performed 12707 root evaluator evaluations with a maximum evaluation depth of 6. Performed 12707 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 19:09:48,194 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:09:48,194 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:09:50,047 INFO L227 lantSequenceWeakener]: Weakened 60 states. On average, predicates are now at 77.73% of their original sizes. [2018-11-12 19:09:50,047 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:09:54,695 INFO L415 sIntCurrentIteration]: We unified 313 AI predicates to 313 [2018-11-12 19:09:54,696 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:09:54,697 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:09:54,697 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [6] total 23 [2018-11-12 19:09:54,697 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:09:54,698 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-12 19:09:54,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-12 19:09:54,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2018-11-12 19:09:54,699 INFO L87 Difference]: Start difference. First operand 2613 states and 3832 transitions. Second operand 19 states. [2018-11-12 19:10:59,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:10:59,706 INFO L93 Difference]: Finished difference Result 8276 states and 11248 transitions. [2018-11-12 19:10:59,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-11-12 19:10:59,706 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 314 [2018-11-12 19:10:59,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:10:59,738 INFO L225 Difference]: With dead ends: 8276 [2018-11-12 19:10:59,739 INFO L226 Difference]: Without dead ends: 5669 [2018-11-12 19:10:59,754 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 328 GetRequests, 225 SyntacticMatches, 72 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 996 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=246, Invalid=810, Unknown=0, NotChecked=0, Total=1056 [2018-11-12 19:10:59,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5669 states. [2018-11-12 19:10:59,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5669 to 4477. [2018-11-12 19:10:59,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4477 states. [2018-11-12 19:10:59,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4477 states to 4477 states and 5771 transitions. [2018-11-12 19:10:59,892 INFO L78 Accepts]: Start accepts. Automaton has 4477 states and 5771 transitions. Word has length 314 [2018-11-12 19:10:59,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:10:59,898 INFO L480 AbstractCegarLoop]: Abstraction has 4477 states and 5771 transitions. [2018-11-12 19:10:59,898 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-12 19:10:59,898 INFO L276 IsEmpty]: Start isEmpty. Operand 4477 states and 5771 transitions. [2018-11-12 19:10:59,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2018-11-12 19:10:59,911 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:10:59,912 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:10:59,912 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:10:59,913 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:10:59,913 INFO L82 PathProgramCache]: Analyzing trace with hash 2097836364, now seen corresponding path program 1 times [2018-11-12 19:10:59,913 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:10:59,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:10:59,914 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:10:59,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:10:59,914 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:11:00,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:11:00,794 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 160 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:11:00,794 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:11:00,794 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:11:00,795 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 414 with the following transitions: [2018-11-12 19:11:00,797 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [277], [279], [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], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [714], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-12 19:11:00,822 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:11:00,822 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:11:01,078 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:11:02,105 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:11:02,105 INFO L272 AbstractInterpreter]: Visited 283 different actions 560 times. Merged at 5 different actions 5 times. Never widened. Performed 7633 root evaluator evaluations with a maximum evaluation depth of 6. Performed 7633 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 19:11:02,113 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:11:02,113 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:11:02,755 INFO L227 lantSequenceWeakener]: Weakened 77 states. On average, predicates are now at 80.96% of their original sizes. [2018-11-12 19:11:02,755 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:11:03,275 INFO L415 sIntCurrentIteration]: We unified 412 AI predicates to 412 [2018-11-12 19:11:03,276 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:11:03,276 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:11:03,276 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [6] total 25 [2018-11-12 19:11:03,276 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:11:03,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-12 19:11:03,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-12 19:11:03,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2018-11-12 19:11:03,279 INFO L87 Difference]: Start difference. First operand 4477 states and 5771 transitions. Second operand 21 states. [2018-11-12 19:11:55,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:11:55,833 INFO L93 Difference]: Finished difference Result 8548 states and 11299 transitions. [2018-11-12 19:11:55,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-11-12 19:11:55,833 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 413 [2018-11-12 19:11:55,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:11:55,863 INFO L225 Difference]: With dead ends: 8548 [2018-11-12 19:11:55,863 INFO L226 Difference]: Without dead ends: 5941 [2018-11-12 19:11:55,878 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 430 GetRequests, 393 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=279, Invalid=1203, Unknown=0, NotChecked=0, Total=1482 [2018-11-12 19:11:55,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5941 states. [2018-11-12 19:11:55,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5941 to 5701. [2018-11-12 19:11:55,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5701 states. [2018-11-12 19:11:56,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5701 states to 5701 states and 7082 transitions. [2018-11-12 19:11:56,013 INFO L78 Accepts]: Start accepts. Automaton has 5701 states and 7082 transitions. Word has length 413 [2018-11-12 19:11:56,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:11:56,014 INFO L480 AbstractCegarLoop]: Abstraction has 5701 states and 7082 transitions. [2018-11-12 19:11:56,015 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-11-12 19:11:56,015 INFO L276 IsEmpty]: Start isEmpty. Operand 5701 states and 7082 transitions. [2018-11-12 19:11:56,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2018-11-12 19:11:56,033 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:11:56,034 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:11:56,034 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:11:56,035 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:11:56,035 INFO L82 PathProgramCache]: Analyzing trace with hash -1284891549, now seen corresponding path program 1 times [2018-11-12 19:11:56,035 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:11:56,037 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:11:56,037 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:11:56,037 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:11:56,037 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:11:56,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:11:57,235 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 290 proven. 2 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-11-12 19:11:57,236 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:11:57,236 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:11:57,236 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 510 with the following transitions: [2018-11-12 19:11:57,237 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [277], [279], [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], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [714], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-12 19:11:57,242 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:11:57,243 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:11:57,292 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:11:58,693 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 19:11:58,694 INFO L272 AbstractInterpreter]: Visited 285 different actions 1415 times. Merged at 7 different actions 37 times. Widened at 1 different actions 1 times. Performed 24876 root evaluator evaluations with a maximum evaluation depth of 6. Performed 24876 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 6 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-12 19:11:58,702 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:11:58,703 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 19:11:58,703 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:11:58,703 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-12 19:11:58,712 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:11:58,712 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 19:11:58,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:11:58,878 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 19:11:59,645 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-11-12 19:12:00,472 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 262 proven. 41 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-11-12 19:12:00,473 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 19:12:02,629 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 103 proven. 277 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 19:12:02,650 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 19:12:02,650 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 9] total 17 [2018-11-12 19:12:02,650 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 19:12:02,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-12 19:12:02,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-12 19:12:02,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2018-11-12 19:12:02,653 INFO L87 Difference]: Start difference. First operand 5701 states and 7082 transitions. Second operand 12 states. [2018-11-12 19:12:35,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:12:35,761 INFO L93 Difference]: Finished difference Result 26718 states and 40778 transitions. [2018-11-12 19:12:35,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-11-12 19:12:35,761 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 509 [2018-11-12 19:12:35,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:12:35,922 INFO L225 Difference]: With dead ends: 26718 [2018-11-12 19:12:35,922 INFO L226 Difference]: Without dead ends: 19158 [2018-11-12 19:12:36,019 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1178 GetRequests, 1079 SyntacticMatches, 1 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3449 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1928, Invalid=7972, Unknown=0, NotChecked=0, Total=9900 [2018-11-12 19:12:36,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19158 states. [2018-11-12 19:12:36,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19158 to 17005. [2018-11-12 19:12:36,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17005 states. [2018-11-12 19:12:36,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17005 states to 17005 states and 22665 transitions. [2018-11-12 19:12:36,649 INFO L78 Accepts]: Start accepts. Automaton has 17005 states and 22665 transitions. Word has length 509 [2018-11-12 19:12:36,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:12:36,649 INFO L480 AbstractCegarLoop]: Abstraction has 17005 states and 22665 transitions. [2018-11-12 19:12:36,649 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-12 19:12:36,654 INFO L276 IsEmpty]: Start isEmpty. Operand 17005 states and 22665 transitions. [2018-11-12 19:12:36,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 538 [2018-11-12 19:12:36,691 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:12:36,692 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, 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, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:12:36,692 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:12:36,693 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:12:36,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1257303286, now seen corresponding path program 1 times [2018-11-12 19:12:36,693 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:12:36,694 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:12:36,694 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:12:36,694 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:12:36,694 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:12:36,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:12:37,479 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 294 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-11-12 19:12:37,479 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:12:37,479 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:12:37,480 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 538 with the following transitions: [2018-11-12 19:12:37,480 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [277], [279], [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], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [714], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1562], [1566], [1570], [1581], [1585], [1589], [1593], [1597], [1601], [1612], [1616], [1620], [1623], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-12 19:12:37,485 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:12:37,485 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:12:37,918 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:12:38,722 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:12:38,722 INFO L272 AbstractInterpreter]: Visited 296 different actions 1175 times. Merged at 7 different actions 24 times. Never widened. Performed 22508 root evaluator evaluations with a maximum evaluation depth of 6. Performed 22508 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 4 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-12 19:12:38,731 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:12:38,731 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:12:39,290 INFO L227 lantSequenceWeakener]: Weakened 534 states. On average, predicates are now at 80.24% of their original sizes. [2018-11-12 19:12:39,291 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:12:39,532 INFO L415 sIntCurrentIteration]: We unified 536 AI predicates to 536 [2018-11-12 19:12:39,532 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:12:39,532 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:12:39,533 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2018-11-12 19:12:39,533 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:12:39,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-12 19:12:39,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-12 19:12:39,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-12 19:12:39,534 INFO L87 Difference]: Start difference. First operand 17005 states and 22665 transitions. Second operand 11 states. Received shutdown request... [2018-11-12 19:12:59,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-11-12 19:12:59,114 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 19:12:59,120 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 19:12:59,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 07:12:59 BoogieIcfgContainer [2018-11-12 19:12:59,120 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 19:12:59,121 INFO L168 Benchmark]: Toolchain (without parser) took 215843.53 ms. Allocated memory was 1.5 GB in the beginning and 5.1 GB in the end (delta: 3.5 GB). Free memory was 1.4 GB in the beginning and 2.7 GB in the end (delta: -1.3 GB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-11-12 19:12:59,122 INFO L168 Benchmark]: CDTParser took 0.26 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. [2018-11-12 19:12:59,123 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1360.76 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: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. [2018-11-12 19:12:59,124 INFO L168 Benchmark]: Boogie Procedure Inliner took 199.86 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 755.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -901.2 MB). Peak memory consumption was 31.3 MB. Max. memory is 7.1 GB. [2018-11-12 19:12:59,125 INFO L168 Benchmark]: Boogie Preprocessor took 169.96 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2018-11-12 19:12:59,126 INFO L168 Benchmark]: RCFGBuilder took 7089.46 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 301.8 MB). Peak memory consumption was 301.8 MB. Max. memory is 7.1 GB. [2018-11-12 19:12:59,127 INFO L168 Benchmark]: TraceAbstraction took 207018.54 ms. Allocated memory was 2.3 GB in the beginning and 5.1 GB in the end (delta: 2.8 GB). Free memory was 1.9 GB in the beginning and 2.7 GB in the end (delta: -827.5 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-11-12 19:12:59,132 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 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 1360.76 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: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 199.86 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 755.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -901.2 MB). Peak memory consumption was 31.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 169.96 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7089.46 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 301.8 MB). Peak memory consumption was 301.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 207018.54 ms. Allocated memory was 2.3 GB in the beginning and 5.1 GB in the end (delta: 2.8 GB). Free memory was 1.9 GB in the beginning and 2.7 GB in the end (delta: -827.5 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 100]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 100). Cancelled while BasicCegarLoop was constructing difference of abstraction (17005states) and FLOYD_HOARE automaton (currently 21 states, 11 states before enhancement),while ReachableStatesComputation was computing reachable states (13277 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 206.9s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 182.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2182 SDtfs, 21596 SDslu, 3301 SDs, 0 SdLazy, 44181 SolverSat, 4991 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 90.3s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 2495 GetRequests, 2231 SyntacticMatches, 73 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4846 ImplicationChecksByTransitivity, 9.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17005occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 6.5s AbstIntTime, 4 AbstIntIterations, 3 AbstIntStrong, 0.9977433113647703 AbsIntWeakeningRatio, 0.07137192704203013 AbsIntAvgWeakeningVarsNumRemoved, 15.84932593180016 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 3900 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 6.0s InterpolantComputationTime, 2428 NumberOfCodeBlocks, 2428 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 2929 ConstructedInterpolants, 0 QuantifiedInterpolants, 7461595 SizeOfPredicates, 7 NumberOfNonLiveVariables, 728 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 1541/2102 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown