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/Problem14_label49_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 20:38:25,461 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 20:38:25,463 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 20:38:25,479 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 20:38:25,479 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 20:38:25,482 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 20:38:25,484 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 20:38:25,487 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 20:38:25,488 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 20:38:25,491 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 20:38:25,494 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 20:38:25,494 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 20:38:25,495 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 20:38:25,496 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 20:38:25,503 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 20:38:25,503 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 20:38:25,507 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 20:38:25,509 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 20:38:25,511 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 20:38:25,513 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 20:38:25,514 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 20:38:25,515 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 20:38:25,518 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 20:38:25,518 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 20:38:25,518 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 20:38:25,519 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 20:38:25,520 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 20:38:25,521 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 20:38:25,521 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 20:38:25,522 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 20:38:25,522 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 20:38:25,523 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-11-07 20:38:25,525 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 [2018-11-07 20:38:25,551 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 20:38:25,551 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 20:38:25,552 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 20:38:25,552 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 20:38:25,555 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 20:38:25,556 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 20:38:25,556 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 20:38:25,556 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 20:38:25,556 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 20:38:25,556 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 20:38:25,556 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 20:38:25,557 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 20:38:25,557 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 20:38:25,560 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 20:38:25,560 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 20:38:25,560 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 20:38:25,560 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 20:38:25,561 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 20:38:25,561 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 20:38:25,561 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 20:38:25,561 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 20:38:25,561 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 20:38:25,562 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 20:38:25,562 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 20:38:25,562 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 20:38:25,562 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 20:38:25,562 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 20:38:25,563 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 20:38:25,565 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 20:38:25,565 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 20:38:25,565 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 20:38:25,568 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 20:38:25,568 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 20:38:25,568 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 20:38:25,569 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 20:38:25,616 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 20:38:25,634 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 20:38:25,640 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 20:38:25,642 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 20:38:25,642 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 20:38:25,644 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label49_true-unreach-call_false-termination.c [2018-11-07 20:38:25,713 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88217cc1a/bb336354c6524d10b5473ea91f1936fb/FLAG5036357a9 [2018-11-07 20:38:26,362 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 20:38:26,362 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label49_true-unreach-call_false-termination.c [2018-11-07 20:38:26,379 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88217cc1a/bb336354c6524d10b5473ea91f1936fb/FLAG5036357a9 [2018-11-07 20:38:26,398 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88217cc1a/bb336354c6524d10b5473ea91f1936fb [2018-11-07 20:38:26,409 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 20:38:26,410 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 20:38:26,411 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 20:38:26,411 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 20:38:26,415 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 20:38:26,416 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:38:26" (1/1) ... [2018-11-07 20:38:26,419 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35b0efbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:38:26, skipping insertion in model container [2018-11-07 20:38:26,419 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:38:26" (1/1) ... [2018-11-07 20:38:26,430 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 20:38:26,498 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 20:38:27,021 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 20:38:27,026 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 20:38:27,176 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 20:38:27,194 INFO L193 MainTranslator]: Completed translation [2018-11-07 20:38:27,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:38:27 WrapperNode [2018-11-07 20:38:27,195 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 20:38:27,196 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 20:38:27,196 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 20:38:27,196 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 20:38:27,206 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:38:27" (1/1) ... [2018-11-07 20:38:27,341 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:38:27" (1/1) ... [2018-11-07 20:38:27,358 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 20:38:27,358 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 20:38:27,361 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 20:38:27,361 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 20:38:27,378 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:38:27" (1/1) ... [2018-11-07 20:38:27,379 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:38:27" (1/1) ... [2018-11-07 20:38:27,385 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:38:27" (1/1) ... [2018-11-07 20:38:27,385 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:38:27" (1/1) ... [2018-11-07 20:38:27,431 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:38:27" (1/1) ... [2018-11-07 20:38:27,454 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:38:27" (1/1) ... [2018-11-07 20:38:27,462 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:38:27" (1/1) ... [2018-11-07 20:38:27,480 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 20:38:27,482 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 20:38:27,482 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 20:38:27,482 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 20:38:27,483 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:38:27" (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 [2018-11-07 20:38:27,553 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 20:38:27,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 20:38:27,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 20:38:27,554 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 20:38:27,554 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 20:38:27,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 20:38:27,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 20:38:27,555 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 20:38:27,556 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 20:38:30,988 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 20:38:30,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:38:30 BoogieIcfgContainer [2018-11-07 20:38:30,988 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 20:38:30,989 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 20:38:30,989 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 20:38:30,992 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 20:38:30,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:38:26" (1/3) ... [2018-11-07 20:38:30,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38045993 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:38:30, skipping insertion in model container [2018-11-07 20:38:30,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:38:27" (2/3) ... [2018-11-07 20:38:30,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38045993 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:38:30, skipping insertion in model container [2018-11-07 20:38:30,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:38:30" (3/3) ... [2018-11-07 20:38:30,996 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label49_true-unreach-call_false-termination.c [2018-11-07 20:38:31,006 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 20:38:31,013 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 20:38:31,028 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 20:38:31,066 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 20:38:31,067 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 20:38:31,067 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 20:38:31,067 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 20:38:31,067 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 20:38:31,068 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 20:38:31,068 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 20:38:31,068 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 20:38:31,095 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-11-07 20:38:31,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-11-07 20:38:31,106 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:38:31,108 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:38:31,112 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:38:31,117 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:38:31,117 INFO L82 PathProgramCache]: Analyzing trace with hash -825405036, now seen corresponding path program 1 times [2018-11-07 20:38:31,119 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:38:31,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:38:31,167 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:38:31,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:38:31,168 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:38:31,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:38:31,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:38:31,674 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:38:31,674 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 20:38:31,674 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:38:31,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 20:38:31,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 20:38:31,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 20:38:31,704 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 4 states. [2018-11-07 20:38:34,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:38:34,559 INFO L93 Difference]: Finished difference Result 894 states and 1611 transitions. [2018-11-07 20:38:34,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 20:38:34,561 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 66 [2018-11-07 20:38:34,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:38:34,589 INFO L225 Difference]: With dead ends: 894 [2018-11-07 20:38:34,589 INFO L226 Difference]: Without dead ends: 633 [2018-11-07 20:38:34,603 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 [2018-11-07 20:38:34,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2018-11-07 20:38:34,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 633. [2018-11-07 20:38:34,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 633 states. [2018-11-07 20:38:34,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 962 transitions. [2018-11-07 20:38:34,750 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 962 transitions. Word has length 66 [2018-11-07 20:38:34,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:38:34,751 INFO L480 AbstractCegarLoop]: Abstraction has 633 states and 962 transitions. [2018-11-07 20:38:34,751 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 20:38:34,752 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 962 transitions. [2018-11-07 20:38:34,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2018-11-07 20:38:34,770 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:38:34,771 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 20:38:34,771 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:38:34,771 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:38:34,773 INFO L82 PathProgramCache]: Analyzing trace with hash 965459243, now seen corresponding path program 1 times [2018-11-07 20:38:34,773 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:38:34,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:38:34,775 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:38:34,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:38:34,776 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:38:34,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:38:35,138 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:38:35,138 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:38:35,139 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 20:38:35,139 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:38:35,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 20:38:35,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 20:38:35,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 20:38:35,142 INFO L87 Difference]: Start difference. First operand 633 states and 962 transitions. Second operand 4 states. [2018-11-07 20:38:38,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:38:38,422 INFO L93 Difference]: Finished difference Result 2358 states and 3743 transitions. [2018-11-07 20:38:38,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 20:38:38,423 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 179 [2018-11-07 20:38:38,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:38:38,438 INFO L225 Difference]: With dead ends: 2358 [2018-11-07 20:38:38,439 INFO L226 Difference]: Without dead ends: 1731 [2018-11-07 20:38:38,448 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 [2018-11-07 20:38:38,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1731 states. [2018-11-07 20:38:38,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1731 to 1731. [2018-11-07 20:38:38,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1731 states. [2018-11-07 20:38:38,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1731 states to 1731 states and 2521 transitions. [2018-11-07 20:38:38,522 INFO L78 Accepts]: Start accepts. Automaton has 1731 states and 2521 transitions. Word has length 179 [2018-11-07 20:38:38,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:38:38,523 INFO L480 AbstractCegarLoop]: Abstraction has 1731 states and 2521 transitions. [2018-11-07 20:38:38,523 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 20:38:38,523 INFO L276 IsEmpty]: Start isEmpty. Operand 1731 states and 2521 transitions. [2018-11-07 20:38:38,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2018-11-07 20:38:38,535 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:38:38,535 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:38:38,535 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:38:38,538 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:38:38,538 INFO L82 PathProgramCache]: Analyzing trace with hash 747473196, now seen corresponding path program 1 times [2018-11-07 20:38:38,538 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:38:38,539 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:38:38,539 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:38:38,540 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:38:38,540 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:38:38,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:38:39,176 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 200 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:38:39,177 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:38:39,177 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:38:39,180 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 263 with the following transitions: [2018-11-07 20:38:39,183 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [429], [431], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [550], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [662], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 20:38:39,265 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:38:39,266 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:38:39,869 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:38:39,870 INFO L272 AbstractInterpreter]: Visited 117 different actions 117 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 20:38:39,901 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:38:39,902 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:38:40,421 INFO L227 lantSequenceWeakener]: Weakened 253 states. On average, predicates are now at 78.12% of their original sizes. [2018-11-07 20:38:40,422 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:38:40,783 INFO L415 sIntCurrentIteration]: We unified 261 AI predicates to 261 [2018-11-07 20:38:40,784 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:38:40,788 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:38:40,788 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-07 20:38:40,788 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:38:40,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 20:38:40,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 20:38:40,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 20:38:40,790 INFO L87 Difference]: Start difference. First operand 1731 states and 2521 transitions. Second operand 7 states. [2018-11-07 20:38:43,036 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:38:57,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:38:57,677 INFO L93 Difference]: Finished difference Result 3641 states and 5276 transitions. [2018-11-07 20:38:57,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 20:38:57,677 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 262 [2018-11-07 20:38:57,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:38:57,688 INFO L225 Difference]: With dead ends: 3641 [2018-11-07 20:38:57,689 INFO L226 Difference]: Without dead ends: 1916 [2018-11-07 20:38:57,695 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 262 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-07 20:38:57,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1916 states. [2018-11-07 20:38:57,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1916 to 1914. [2018-11-07 20:38:57,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1914 states. [2018-11-07 20:38:57,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1914 states to 1914 states and 2711 transitions. [2018-11-07 20:38:57,747 INFO L78 Accepts]: Start accepts. Automaton has 1914 states and 2711 transitions. Word has length 262 [2018-11-07 20:38:57,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:38:57,748 INFO L480 AbstractCegarLoop]: Abstraction has 1914 states and 2711 transitions. [2018-11-07 20:38:57,748 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 20:38:57,748 INFO L276 IsEmpty]: Start isEmpty. Operand 1914 states and 2711 transitions. [2018-11-07 20:38:57,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2018-11-07 20:38:57,759 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:38:57,759 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:38:57,760 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:38:57,760 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:38:57,760 INFO L82 PathProgramCache]: Analyzing trace with hash -178374725, now seen corresponding path program 1 times [2018-11-07 20:38:57,760 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:38:57,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:38:57,761 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:38:57,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:38:57,762 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:38:57,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:38:58,398 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2018-11-07 20:38:59,063 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 264 proven. 161 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 20:38:59,064 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:38:59,064 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:38:59,064 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 348 with the following transitions: [2018-11-07 20:38:59,064 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [429], [431], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [550], [551], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [662], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 20:38:59,071 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:38:59,071 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:38:59,305 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:38:59,306 INFO L272 AbstractInterpreter]: Visited 121 different actions 235 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 20:38:59,344 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:38:59,344 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:38:59,901 INFO L227 lantSequenceWeakener]: Weakened 156 states. On average, predicates are now at 78.09% of their original sizes. [2018-11-07 20:38:59,901 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:39:01,492 INFO L415 sIntCurrentIteration]: We unified 346 AI predicates to 346 [2018-11-07 20:39:01,493 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:39:01,493 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:39:01,494 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [24] imperfect sequences [12] total 34 [2018-11-07 20:39:01,494 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:39:01,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-11-07 20:39:01,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-11-07 20:39:01,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2018-11-07 20:39:01,497 INFO L87 Difference]: Start difference. First operand 1914 states and 2711 transitions. Second operand 24 states. [2018-11-07 20:39:08,957 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:39:23,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:39:23,684 INFO L93 Difference]: Finished difference Result 5233 states and 7249 transitions. [2018-11-07 20:39:23,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-11-07 20:39:23,684 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 347 [2018-11-07 20:39:23,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:39:23,702 INFO L225 Difference]: With dead ends: 5233 [2018-11-07 20:39:23,702 INFO L226 Difference]: Without dead ends: 3508 [2018-11-07 20:39:23,709 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 357 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=231, Invalid=959, Unknown=0, NotChecked=0, Total=1190 [2018-11-07 20:39:23,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3508 states. [2018-11-07 20:39:23,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3508 to 3261. [2018-11-07 20:39:23,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3261 states. [2018-11-07 20:39:23,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3261 states to 3261 states and 4136 transitions. [2018-11-07 20:39:23,791 INFO L78 Accepts]: Start accepts. Automaton has 3261 states and 4136 transitions. Word has length 347 [2018-11-07 20:39:23,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:39:23,792 INFO L480 AbstractCegarLoop]: Abstraction has 3261 states and 4136 transitions. [2018-11-07 20:39:23,792 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-11-07 20:39:23,792 INFO L276 IsEmpty]: Start isEmpty. Operand 3261 states and 4136 transitions. [2018-11-07 20:39:23,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2018-11-07 20:39:23,804 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:39:23,804 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 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] [2018-11-07 20:39:23,805 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:39:23,805 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:39:23,805 INFO L82 PathProgramCache]: Analyzing trace with hash 896568615, now seen corresponding path program 1 times [2018-11-07 20:39:23,805 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:39:23,806 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:39:23,806 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:39:23,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:39:23,807 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:39:23,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:39:24,109 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-11-07 20:39:24,371 WARN L179 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2018-11-07 20:39:24,853 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 236 proven. 166 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2018-11-07 20:39:24,853 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:39:24,853 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:39:24,854 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 374 with the following transitions: [2018-11-07 20:39:24,854 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [429], [431], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [550], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [658], [659], [662], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 20:39:24,859 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:39:24,859 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:39:24,994 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:39:24,994 INFO L272 AbstractInterpreter]: Visited 121 different actions 236 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 20:39:25,001 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:39:25,001 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:39:25,900 INFO L227 lantSequenceWeakener]: Weakened 149 states. On average, predicates are now at 79.07% of their original sizes. [2018-11-07 20:39:25,901 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:39:26,379 INFO L415 sIntCurrentIteration]: We unified 372 AI predicates to 372 [2018-11-07 20:39:26,380 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:39:26,380 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:39:26,380 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [8] total 26 [2018-11-07 20:39:26,381 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:39:26,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-07 20:39:26,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-07 20:39:26,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2018-11-07 20:39:26,382 INFO L87 Difference]: Start difference. First operand 3261 states and 4136 transitions. Second operand 20 states. [2018-11-07 20:39:32,140 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:39:39,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:39:39,510 INFO L93 Difference]: Finished difference Result 5359 states and 7137 transitions. [2018-11-07 20:39:39,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-11-07 20:39:39,510 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 373 [2018-11-07 20:39:39,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:39:39,526 INFO L225 Difference]: With dead ends: 5359 [2018-11-07 20:39:39,526 INFO L226 Difference]: Without dead ends: 3634 [2018-11-07 20:39:39,534 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 390 GetRequests, 354 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=269, Invalid=1137, Unknown=0, NotChecked=0, Total=1406 [2018-11-07 20:39:39,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3634 states. [2018-11-07 20:39:39,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3634 to 3629. [2018-11-07 20:39:39,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3629 states. [2018-11-07 20:39:39,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3629 states to 3629 states and 4533 transitions. [2018-11-07 20:39:39,616 INFO L78 Accepts]: Start accepts. Automaton has 3629 states and 4533 transitions. Word has length 373 [2018-11-07 20:39:39,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:39:39,617 INFO L480 AbstractCegarLoop]: Abstraction has 3629 states and 4533 transitions. [2018-11-07 20:39:39,617 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-07 20:39:39,617 INFO L276 IsEmpty]: Start isEmpty. Operand 3629 states and 4533 transitions. [2018-11-07 20:39:39,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2018-11-07 20:39:39,630 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:39:39,631 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 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] [2018-11-07 20:39:39,631 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:39:39,631 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:39:39,631 INFO L82 PathProgramCache]: Analyzing trace with hash 1453582771, now seen corresponding path program 1 times [2018-11-07 20:39:39,632 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:39:39,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:39:39,633 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:39:39,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:39:39,633 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:39:39,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:39:40,105 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 20:39:40,311 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-07 20:39:40,549 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 20:39:41,071 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 190 proven. 262 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 20:39:41,072 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:39:41,072 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:39:41,072 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 384 with the following transitions: [2018-11-07 20:39:41,073 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [429], [431], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [550], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [662], [663], [667], [671], [675], [679], [683], [687], [691], [695], [698], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 20:39:41,077 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:39:41,077 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:39:41,276 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:39:41,276 INFO L272 AbstractInterpreter]: Visited 130 different actions 256 times. Merged at 5 different actions 7 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 20:39:41,284 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:39:41,284 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:39:42,206 INFO L227 lantSequenceWeakener]: Weakened 98 states. On average, predicates are now at 78.57% of their original sizes. [2018-11-07 20:39:42,206 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:39:42,694 INFO L415 sIntCurrentIteration]: We unified 382 AI predicates to 382 [2018-11-07 20:39:42,694 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:39:42,694 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:39:42,695 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [12] total 30 [2018-11-07 20:39:42,695 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:39:42,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-07 20:39:42,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-07 20:39:42,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2018-11-07 20:39:42,697 INFO L87 Difference]: Start difference. First operand 3629 states and 4533 transitions. Second operand 20 states. [2018-11-07 20:39:50,443 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:40:05,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:40:05,759 INFO L93 Difference]: Finished difference Result 6653 states and 8729 transitions. [2018-11-07 20:40:05,759 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-11-07 20:40:05,759 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 383 [2018-11-07 20:40:05,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:40:05,777 INFO L225 Difference]: With dead ends: 6653 [2018-11-07 20:40:05,777 INFO L226 Difference]: Without dead ends: 4928 [2018-11-07 20:40:05,785 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 391 GetRequests, 362 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=168, Invalid=644, Unknown=0, NotChecked=0, Total=812 [2018-11-07 20:40:05,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4928 states. [2018-11-07 20:40:05,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4928 to 4249. [2018-11-07 20:40:05,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4249 states. [2018-11-07 20:40:05,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4249 states to 4249 states and 5190 transitions. [2018-11-07 20:40:05,881 INFO L78 Accepts]: Start accepts. Automaton has 4249 states and 5190 transitions. Word has length 383 [2018-11-07 20:40:05,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:40:05,881 INFO L480 AbstractCegarLoop]: Abstraction has 4249 states and 5190 transitions. [2018-11-07 20:40:05,882 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-07 20:40:05,882 INFO L276 IsEmpty]: Start isEmpty. Operand 4249 states and 5190 transitions. [2018-11-07 20:40:05,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2018-11-07 20:40:05,897 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:40:05,897 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:40:05,898 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:40:05,898 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:40:05,898 INFO L82 PathProgramCache]: Analyzing trace with hash -734433773, now seen corresponding path program 1 times [2018-11-07 20:40:05,898 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:40:05,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:40:05,899 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:40:05,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:40:05,899 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:40:05,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:40:06,235 WARN L179 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-11-07 20:40:06,429 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 315 proven. 124 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-11-07 20:40:06,430 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:40:06,430 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:40:06,430 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 400 with the following transitions: [2018-11-07 20:40:06,430 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [429], [431], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [662], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 20:40:06,433 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:40:06,434 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:40:06,590 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:40:06,728 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:40:06,728 INFO L272 AbstractInterpreter]: Visited 121 different actions 360 times. Merged at 7 different actions 19 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-07 20:40:06,764 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:40:06,764 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:40:07,159 INFO L227 lantSequenceWeakener]: Weakened 396 states. On average, predicates are now at 80.61% of their original sizes. [2018-11-07 20:40:07,159 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:40:07,267 INFO L415 sIntCurrentIteration]: We unified 398 AI predicates to 398 [2018-11-07 20:40:07,268 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:40:07,268 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:40:07,268 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [7] total 15 [2018-11-07 20:40:07,268 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:40:07,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 20:40:07,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 20:40:07,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-11-07 20:40:07,270 INFO L87 Difference]: Start difference. First operand 4249 states and 5190 transitions. Second operand 10 states. [2018-11-07 20:40:11,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:40:11,526 INFO L93 Difference]: Finished difference Result 6550 states and 8621 transitions. [2018-11-07 20:40:11,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-07 20:40:11,526 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 399 [2018-11-07 20:40:11,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:40:11,544 INFO L225 Difference]: With dead ends: 6550 [2018-11-07 20:40:11,545 INFO L226 Difference]: Without dead ends: 4825 [2018-11-07 20:40:11,552 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 406 GetRequests, 390 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2018-11-07 20:40:11,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4825 states. [2018-11-07 20:40:11,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4825 to 4808. [2018-11-07 20:40:11,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4808 states. [2018-11-07 20:40:11,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4808 states to 4808 states and 5892 transitions. [2018-11-07 20:40:11,664 INFO L78 Accepts]: Start accepts. Automaton has 4808 states and 5892 transitions. Word has length 399 [2018-11-07 20:40:11,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:40:11,665 INFO L480 AbstractCegarLoop]: Abstraction has 4808 states and 5892 transitions. [2018-11-07 20:40:11,665 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 20:40:11,665 INFO L276 IsEmpty]: Start isEmpty. Operand 4808 states and 5892 transitions. [2018-11-07 20:40:11,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2018-11-07 20:40:11,689 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:40:11,691 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 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] [2018-11-07 20:40:11,691 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:40:11,691 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:40:11,692 INFO L82 PathProgramCache]: Analyzing trace with hash 483390360, now seen corresponding path program 1 times [2018-11-07 20:40:11,692 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:40:11,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:40:11,693 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:40:11,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:40:11,693 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:40:11,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:40:12,239 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 20:40:12,627 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 20:40:13,077 WARN L179 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2018-11-07 20:40:13,527 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 190 proven. 262 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 20:40:13,527 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:40:13,527 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:40:13,528 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 409 with the following transitions: [2018-11-07 20:40:13,528 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [429], [431], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [550], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [662], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [798], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 20:40:13,531 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:40:13,531 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:40:13,732 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:40:13,733 INFO L272 AbstractInterpreter]: Visited 155 different actions 303 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 20:40:13,741 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:40:13,741 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:40:14,238 INFO L227 lantSequenceWeakener]: Weakened 98 states. On average, predicates are now at 78.57% of their original sizes. [2018-11-07 20:40:14,239 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:40:14,739 INFO L415 sIntCurrentIteration]: We unified 407 AI predicates to 407 [2018-11-07 20:40:14,739 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:40:14,740 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:40:14,740 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [12] total 30 [2018-11-07 20:40:14,740 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:40:14,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-07 20:40:14,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-07 20:40:14,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2018-11-07 20:40:14,742 INFO L87 Difference]: Start difference. First operand 4808 states and 5892 transitions. Second operand 20 states. [2018-11-07 20:40:22,532 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:40:35,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:40:35,649 INFO L93 Difference]: Finished difference Result 8388 states and 10797 transitions. [2018-11-07 20:40:35,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-11-07 20:40:35,649 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 408 [2018-11-07 20:40:35,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:40:35,670 INFO L225 Difference]: With dead ends: 8388 [2018-11-07 20:40:35,671 INFO L226 Difference]: Without dead ends: 6104 [2018-11-07 20:40:35,678 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 417 GetRequests, 387 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=174, Invalid=696, Unknown=0, NotChecked=0, Total=870 [2018-11-07 20:40:35,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6104 states. [2018-11-07 20:40:35,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6104 to 5424. [2018-11-07 20:40:35,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5424 states. [2018-11-07 20:40:35,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5424 states to 5424 states and 6545 transitions. [2018-11-07 20:40:35,786 INFO L78 Accepts]: Start accepts. Automaton has 5424 states and 6545 transitions. Word has length 408 [2018-11-07 20:40:35,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:40:35,787 INFO L480 AbstractCegarLoop]: Abstraction has 5424 states and 6545 transitions. [2018-11-07 20:40:35,787 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-07 20:40:35,787 INFO L276 IsEmpty]: Start isEmpty. Operand 5424 states and 6545 transitions. [2018-11-07 20:40:35,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2018-11-07 20:40:35,801 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:40:35,802 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 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] [2018-11-07 20:40:35,802 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:40:35,802 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:40:35,802 INFO L82 PathProgramCache]: Analyzing trace with hash -183054393, now seen corresponding path program 1 times [2018-11-07 20:40:35,802 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:40:35,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:40:35,803 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:40:35,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:40:35,804 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:40:35,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:40:37,178 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 264 proven. 188 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 20:40:37,178 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:40:37,178 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:40:37,178 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 422 with the following transitions: [2018-11-07 20:40:37,178 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [429], [431], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [550], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [662], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [850], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 20:40:37,181 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:40:37,181 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:40:37,465 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:40:37,466 INFO L272 AbstractInterpreter]: Visited 168 different actions 332 times. Merged at 5 different actions 7 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 20:40:37,474 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:40:37,474 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:40:38,011 INFO L227 lantSequenceWeakener]: Weakened 94 states. On average, predicates are now at 78.63% of their original sizes. [2018-11-07 20:40:38,012 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:40:38,677 INFO L415 sIntCurrentIteration]: We unified 420 AI predicates to 420 [2018-11-07 20:40:38,677 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:40:38,677 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:40:38,678 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [12] total 30 [2018-11-07 20:40:38,678 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:40:38,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-07 20:40:38,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-07 20:40:38,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2018-11-07 20:40:38,679 INFO L87 Difference]: Start difference. First operand 5424 states and 6545 transitions. Second operand 20 states. [2018-11-07 20:40:45,387 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:40:58,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:40:58,439 INFO L93 Difference]: Finished difference Result 9005 states and 11451 transitions. [2018-11-07 20:40:58,439 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-11-07 20:40:58,439 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 421 [2018-11-07 20:40:58,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:40:58,458 INFO L225 Difference]: With dead ends: 9005 [2018-11-07 20:40:58,458 INFO L226 Difference]: Without dead ends: 6721 [2018-11-07 20:40:58,465 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 430 GetRequests, 396 SyntacticMatches, 6 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=176, Invalid=694, Unknown=0, NotChecked=0, Total=870 [2018-11-07 20:40:58,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6721 states. [2018-11-07 20:40:58,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6721 to 6040. [2018-11-07 20:40:58,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6040 states. [2018-11-07 20:40:58,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6040 states to 6040 states and 7198 transitions. [2018-11-07 20:40:58,568 INFO L78 Accepts]: Start accepts. Automaton has 6040 states and 7198 transitions. Word has length 421 [2018-11-07 20:40:58,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:40:58,568 INFO L480 AbstractCegarLoop]: Abstraction has 6040 states and 7198 transitions. [2018-11-07 20:40:58,569 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-07 20:40:58,569 INFO L276 IsEmpty]: Start isEmpty. Operand 6040 states and 7198 transitions. [2018-11-07 20:40:58,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2018-11-07 20:40:58,585 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:40:58,585 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:40:58,585 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:40:58,586 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:40:58,586 INFO L82 PathProgramCache]: Analyzing trace with hash -924536721, now seen corresponding path program 1 times [2018-11-07 20:40:58,586 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:40:58,587 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:40:58,587 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:40:58,587 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:40:58,587 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:40:58,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:40:59,623 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 252 proven. 200 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 20:40:59,624 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:40:59,624 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:40:59,624 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 434 with the following transitions: [2018-11-07 20:40:59,624 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [429], [431], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [550], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [662], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [898], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 20:40:59,627 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:40:59,628 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:41:00,004 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:41:00,005 INFO L272 AbstractInterpreter]: Visited 180 different actions 356 times. Merged at 5 different actions 7 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 20:41:00,013 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:41:00,013 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:41:00,536 INFO L227 lantSequenceWeakener]: Weakened 94 states. On average, predicates are now at 78.63% of their original sizes. [2018-11-07 20:41:00,537 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:41:01,217 INFO L415 sIntCurrentIteration]: We unified 432 AI predicates to 432 [2018-11-07 20:41:01,217 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:41:01,217 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:41:01,218 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [14] total 32 [2018-11-07 20:41:01,218 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:41:01,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-07 20:41:01,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-07 20:41:01,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2018-11-07 20:41:01,219 INFO L87 Difference]: Start difference. First operand 6040 states and 7198 transitions. Second operand 20 states. [2018-11-07 20:41:08,327 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:41:22,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:41:22,162 INFO L93 Difference]: Finished difference Result 9620 states and 12103 transitions. [2018-11-07 20:41:22,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-11-07 20:41:22,162 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 433 [2018-11-07 20:41:22,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:41:22,177 INFO L225 Difference]: With dead ends: 9620 [2018-11-07 20:41:22,178 INFO L226 Difference]: Without dead ends: 7336 [2018-11-07 20:41:22,185 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 441 GetRequests, 408 SyntacticMatches, 6 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=168, Invalid=644, Unknown=0, NotChecked=0, Total=812 [2018-11-07 20:41:22,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7336 states. [2018-11-07 20:41:22,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7336 to 6654. [2018-11-07 20:41:22,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6654 states. [2018-11-07 20:41:22,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6654 states to 6654 states and 7850 transitions. [2018-11-07 20:41:22,294 INFO L78 Accepts]: Start accepts. Automaton has 6654 states and 7850 transitions. Word has length 433 [2018-11-07 20:41:22,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:41:22,295 INFO L480 AbstractCegarLoop]: Abstraction has 6654 states and 7850 transitions. [2018-11-07 20:41:22,295 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-07 20:41:22,296 INFO L276 IsEmpty]: Start isEmpty. Operand 6654 states and 7850 transitions. [2018-11-07 20:41:22,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2018-11-07 20:41:22,312 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:41:22,313 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:41:22,313 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:41:22,313 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:41:22,313 INFO L82 PathProgramCache]: Analyzing trace with hash 692020896, now seen corresponding path program 1 times [2018-11-07 20:41:22,313 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:41:22,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:41:22,314 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:41:22,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:41:22,315 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:41:22,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:41:22,845 INFO L134 CoverageAnalysis]: Checked inductivity of 769 backedges. 329 proven. 165 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2018-11-07 20:41:22,845 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:41:22,845 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:41:22,845 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 459 with the following transitions: [2018-11-07 20:41:22,846 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [429], [431], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [550], [551], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [658], [659], [662], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 20:41:22,848 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:41:22,848 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:41:23,108 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:41:23,108 INFO L272 AbstractInterpreter]: Visited 122 different actions 364 times. Merged at 7 different actions 20 times. Never widened. Found 4 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 20:41:23,116 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:41:23,116 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:41:23,717 INFO L227 lantSequenceWeakener]: Weakened 83 states. On average, predicates are now at 77.6% of their original sizes. [2018-11-07 20:41:23,718 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:41:24,727 INFO L415 sIntCurrentIteration]: We unified 457 AI predicates to 457 [2018-11-07 20:41:24,727 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:41:24,727 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:41:24,727 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [23] imperfect sequences [6] total 27 [2018-11-07 20:41:24,727 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:41:24,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-11-07 20:41:24,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-11-07 20:41:24,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=413, Unknown=0, NotChecked=0, Total=506 [2018-11-07 20:41:24,729 INFO L87 Difference]: Start difference. First operand 6654 states and 7850 transitions. Second operand 23 states. [2018-11-07 20:41:36,725 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:41:49,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:41:49,851 INFO L93 Difference]: Finished difference Result 12477 states and 15156 transitions. [2018-11-07 20:41:49,851 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-11-07 20:41:49,851 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 458 [2018-11-07 20:41:49,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:41:49,869 INFO L225 Difference]: With dead ends: 12477 [2018-11-07 20:41:49,870 INFO L226 Difference]: Without dead ends: 9028 [2018-11-07 20:41:49,879 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 477 GetRequests, 436 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=336, Invalid=1470, Unknown=0, NotChecked=0, Total=1806 [2018-11-07 20:41:49,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9028 states. [2018-11-07 20:41:49,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9028 to 8433. [2018-11-07 20:41:49,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8433 states. [2018-11-07 20:41:50,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8433 states to 8433 states and 9802 transitions. [2018-11-07 20:41:50,005 INFO L78 Accepts]: Start accepts. Automaton has 8433 states and 9802 transitions. Word has length 458 [2018-11-07 20:41:50,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:41:50,005 INFO L480 AbstractCegarLoop]: Abstraction has 8433 states and 9802 transitions. [2018-11-07 20:41:50,005 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-11-07 20:41:50,006 INFO L276 IsEmpty]: Start isEmpty. Operand 8433 states and 9802 transitions. [2018-11-07 20:41:50,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2018-11-07 20:41:50,027 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:41:50,027 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:41:50,027 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:41:50,027 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:41:50,028 INFO L82 PathProgramCache]: Analyzing trace with hash 1680425511, now seen corresponding path program 1 times [2018-11-07 20:41:50,028 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:41:50,028 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:41:50,029 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:41:50,029 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:41:50,029 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:41:50,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:41:51,228 INFO L134 CoverageAnalysis]: Checked inductivity of 775 backedges. 347 proven. 423 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 20:41:51,228 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:41:51,228 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:41:51,228 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 462 with the following transitions: [2018-11-07 20:41:51,228 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [429], [431], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [550], [551], [555], [559], [563], [566], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [658], [659], [662], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 20:41:51,230 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:41:51,230 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:41:51,460 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:41:51,461 INFO L272 AbstractInterpreter]: Visited 122 different actions 361 times. Merged at 7 different actions 17 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-07 20:41:51,465 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:41:51,465 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:41:52,044 INFO L227 lantSequenceWeakener]: Weakened 74 states. On average, predicates are now at 77.76% of their original sizes. [2018-11-07 20:41:52,045 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:41:52,548 INFO L415 sIntCurrentIteration]: We unified 460 AI predicates to 460 [2018-11-07 20:41:52,548 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:41:52,548 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:41:52,548 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [15] total 34 [2018-11-07 20:41:52,548 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:41:52,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-07 20:41:52,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-07 20:41:52,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2018-11-07 20:41:52,549 INFO L87 Difference]: Start difference. First operand 8433 states and 9802 transitions. Second operand 21 states. [2018-11-07 20:42:01,423 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-11-07 20:42:17,556 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-11-07 20:42:17,556 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 20:42:17,561 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 20:42:17,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 08:42:17 BoogieIcfgContainer [2018-11-07 20:42:17,561 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 20:42:17,562 INFO L168 Benchmark]: Toolchain (without parser) took 231152.24 ms. Allocated memory was 1.5 GB in the beginning and 4.6 GB in the end (delta: 3.1 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 1.8 GB. Max. memory is 7.1 GB. [2018-11-07 20:42:17,563 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. [2018-11-07 20:42:17,563 INFO L168 Benchmark]: CACSL2BoogieTranslator took 784.06 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: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-11-07 20:42:17,564 INFO L168 Benchmark]: Boogie Procedure Inliner took 162.60 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 720.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -819.4 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. [2018-11-07 20:42:17,565 INFO L168 Benchmark]: Boogie Preprocessor took 123.14 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. [2018-11-07 20:42:17,566 INFO L168 Benchmark]: RCFGBuilder took 3506.57 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: 120.0 MB). Peak memory consumption was 120.0 MB. Max. memory is 7.1 GB. [2018-11-07 20:42:17,566 INFO L168 Benchmark]: TraceAbstraction took 226571.90 ms. Allocated memory was 2.3 GB in the beginning and 4.6 GB in the end (delta: 2.3 GB). Free memory was 2.1 GB in the beginning and 2.7 GB in the end (delta: -631.9 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-11-07 20:42:17,571 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 784.06 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: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 162.60 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 720.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -819.4 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 123.14 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 3506.57 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: 120.0 MB). Peak memory consumption was 120.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 226571.90 ms. Allocated memory was 2.3 GB in the beginning and 4.6 GB in the end (delta: 2.3 GB). Free memory was 2.1 GB in the beginning and 2.7 GB in the end (delta: -631.9 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 181]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 181). Cancelled while BasicCegarLoop was constructing difference of abstraction (8433states) and FLOYD_HOARE automaton (currently 39 states, 21 states before enhancement),while ReachableStatesComputation was computing reachable states (11448 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 226.5s OverallTime, 12 OverallIterations, 5 TraceHistogramMax, 197.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2709 SDtfs, 41404 SDslu, 2611 SDs, 0 SdLazy, 32693 SolverSat, 4097 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 59.8s Time, PredicateUnifierStatistics: 20 DeclaredPredicates, 4066 GetRequests, 3761 SyntacticMatches, 16 SemanticMatches, 289 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2330 ImplicationChecksByTransitivity, 9.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8433occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 3.1s AbstIntTime, 10 AbstIntIterations, 10 AbstIntStrong, 0.9974105816393977 AbsIntWeakeningRatio, 0.08284625158831004 AbsIntAvgWeakeningVarsNumRemoved, 11.262261753494283 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 3588 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 7.9s InterpolantComputationTime, 4190 NumberOfCodeBlocks, 4190 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 4178 ConstructedInterpolants, 0 QuantifiedInterpolants, 12016399 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 2 PerfectInterpolantSequences, 3074/5027 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown