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 --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_INTCON-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label13_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-19 12:51:03,457 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-19 12:51:03,459 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-19 12:51:03,471 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-19 12:51:03,472 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-19 12:51:03,473 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-19 12:51:03,474 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-19 12:51:03,476 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-19 12:51:03,478 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-19 12:51:03,479 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-19 12:51:03,480 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-19 12:51:03,480 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-19 12:51:03,481 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-19 12:51:03,482 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-19 12:51:03,483 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-19 12:51:03,484 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-19 12:51:03,485 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-19 12:51:03,490 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-19 12:51:03,492 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-19 12:51:03,494 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-19 12:51:03,497 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-19 12:51:03,500 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-19 12:51:03,506 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-19 12:51:03,506 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-19 12:51:03,506 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-19 12:51:03,508 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-19 12:51:03,509 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-19 12:51:03,512 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-19 12:51:03,512 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-19 12:51:03,513 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-19 12:51:03,514 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-19 12:51:03,517 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-19 12:51:03,517 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-19 12:51:03,517 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-19 12:51:03,519 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-19 12:51:03,519 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-19 12:51:03,520 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_INTCON-OldIcfg.epf [2018-09-19 12:51:03,551 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-19 12:51:03,551 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-19 12:51:03,552 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-19 12:51:03,552 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-19 12:51:03,553 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-19 12:51:03,553 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-19 12:51:03,553 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-19 12:51:03,553 INFO L133 SettingsManager]: * Octagon Domain=false [2018-09-19 12:51:03,553 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-19 12:51:03,554 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-19 12:51:03,554 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-19 12:51:03,554 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-19 12:51:03,555 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-19 12:51:03,556 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-19 12:51:03,556 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-19 12:51:03,556 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-19 12:51:03,556 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-19 12:51:03,558 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-19 12:51:03,559 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-19 12:51:03,559 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-19 12:51:03,559 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-19 12:51:03,560 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-19 12:51:03,560 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-19 12:51:03,560 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-19 12:51:03,560 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-19 12:51:03,561 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-19 12:51:03,561 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-19 12:51:03,561 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-19 12:51:03,561 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-19 12:51:03,561 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-19 12:51:03,562 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-19 12:51:03,562 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-19 12:51:03,562 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-19 12:51:03,562 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-19 12:51:03,631 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-19 12:51:03,647 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-19 12:51:03,655 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-19 12:51:03,656 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-19 12:51:03,657 INFO L276 PluginConnector]: CDTParser initialized [2018-09-19 12:51:03,657 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label13_true-unreach-call.c [2018-09-19 12:51:04,008 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/645e5650e/58237a8fd7c3458b915e8b5810a5bc9a/FLAG14e80ffe8 [2018-09-19 12:51:04,486 INFO L277 CDTParser]: Found 1 translation units. [2018-09-19 12:51:04,487 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label13_true-unreach-call.c [2018-09-19 12:51:04,527 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/645e5650e/58237a8fd7c3458b915e8b5810a5bc9a/FLAG14e80ffe8 [2018-09-19 12:51:04,548 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/645e5650e/58237a8fd7c3458b915e8b5810a5bc9a [2018-09-19 12:51:04,562 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-19 12:51:04,567 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-19 12:51:04,568 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-19 12:51:04,568 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-19 12:51:04,575 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-19 12:51:04,577 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 12:51:04" (1/1) ... [2018-09-19 12:51:04,581 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49f06a43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 12:51:04, skipping insertion in model container [2018-09-19 12:51:04,581 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 12:51:04" (1/1) ... [2018-09-19 12:51:04,595 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-19 12:51:05,997 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 12:51:06,018 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-19 12:51:07,054 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 12:51:07,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 12:51:07 WrapperNode [2018-09-19 12:51:07,459 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-19 12:51:07,460 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-19 12:51:07,460 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-19 12:51:07,460 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-19 12:51:07,470 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 12:51:07" (1/1) ... [2018-09-19 12:51:07,591 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 12:51:07" (1/1) ... [2018-09-19 12:51:07,751 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-19 12:51:07,751 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-19 12:51:07,751 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-19 12:51:07,752 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-19 12:51:08,606 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 12:51:07" (1/1) ... [2018-09-19 12:51:08,607 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 12:51:07" (1/1) ... [2018-09-19 12:51:08,649 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 12:51:07" (1/1) ... [2018-09-19 12:51:08,650 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 12:51:07" (1/1) ... [2018-09-19 12:51:08,813 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 12:51:07" (1/1) ... [2018-09-19 12:51:08,864 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 12:51:07" (1/1) ... [2018-09-19 12:51:08,938 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 12:51:07" (1/1) ... [2018-09-19 12:51:09,012 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-19 12:51:09,013 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-19 12:51:09,013 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-19 12:51:09,013 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-19 12:51:09,014 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 12:51:07" (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 [2018-09-19 12:51:09,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-19 12:51:09,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-19 12:51:09,087 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-09-19 12:51:09,087 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-09-19 12:51:09,087 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-19 12:51:09,087 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-19 12:51:09,087 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-19 12:51:09,087 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-19 12:51:09,088 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-19 12:51:09,088 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-19 12:51:09,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-19 12:51:09,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-19 12:51:09,088 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-19 12:51:09,089 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-19 12:51:21,184 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-19 12:51:21,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 12:51:21 BoogieIcfgContainer [2018-09-19 12:51:21,186 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-19 12:51:21,187 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-19 12:51:21,187 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-19 12:51:21,190 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-19 12:51:21,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.09 12:51:04" (1/3) ... [2018-09-19 12:51:21,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24f35e34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 12:51:21, skipping insertion in model container [2018-09-19 12:51:21,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 12:51:07" (2/3) ... [2018-09-19 12:51:21,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24f35e34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 12:51:21, skipping insertion in model container [2018-09-19 12:51:21,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 12:51:21" (3/3) ... [2018-09-19 12:51:21,193 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label13_true-unreach-call.c [2018-09-19 12:51:21,202 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-19 12:51:21,210 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-19 12:51:21,272 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-19 12:51:21,273 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-19 12:51:21,273 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-19 12:51:21,273 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-19 12:51:21,274 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-19 12:51:21,274 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-19 12:51:21,274 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-19 12:51:21,274 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-19 12:51:21,274 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-19 12:51:21,326 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-09-19 12:51:21,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-09-19 12:51:21,337 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 12:51:21,338 INFO L376 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] [2018-09-19 12:51:21,339 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 12:51:21,344 INFO L82 PathProgramCache]: Analyzing trace with hash -1465464788, now seen corresponding path program 1 times [2018-09-19 12:51:21,346 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 12:51:21,347 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 65 with the following transitions: [2018-09-19 12:51:21,350 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2859], [2867], [2875], [2883], [2891], [2899], [2907], [2915], [2923], [2931], [2939], [2947], [2955], [2963], [2971], [2979], [2987], [2995], [3003], [3011], [3019], [3027], [3035], [3039], [3041], [4242], [4246], [4252], [4256], [4269], [4270], [4271], [4273] [2018-09-19 12:51:21,395 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-09-19 12:51:21,395 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 12:51:21,783 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 12:51:21,785 INFO L272 AbstractInterpreter]: Visited 63 different actions 63 times. Never merged. Never widened. Never found a fixpoint. Largest state had 25 variables. [2018-09-19 12:51:21,832 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 12:51:22,081 INFO L232 lantSequenceWeakener]: Weakened 61 states. On average, predicates are now at 73.25% of their original sizes. [2018-09-19 12:51:22,081 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 12:51:22,360 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 12:51:22,362 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 12:51:22,362 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-19 12:51:22,362 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 12:51:22,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-19 12:51:22,375 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-19 12:51:22,376 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-19 12:51:22,378 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 6 states. [2018-09-19 12:51:33,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 12:51:33,813 INFO L93 Difference]: Finished difference Result 3044 states and 5648 transitions. [2018-09-19 12:51:33,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-19 12:51:33,815 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2018-09-19 12:51:33,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 12:51:33,848 INFO L225 Difference]: With dead ends: 3044 [2018-09-19 12:51:33,848 INFO L226 Difference]: Without dead ends: 1922 [2018-09-19 12:51:33,858 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 63 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-19 12:51:33,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1922 states. [2018-09-19 12:51:34,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1922 to 1920. [2018-09-19 12:51:34,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1920 states. [2018-09-19 12:51:34,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1920 states to 1920 states and 2831 transitions. [2018-09-19 12:51:34,024 INFO L78 Accepts]: Start accepts. Automaton has 1920 states and 2831 transitions. Word has length 64 [2018-09-19 12:51:34,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 12:51:34,027 INFO L480 AbstractCegarLoop]: Abstraction has 1920 states and 2831 transitions. [2018-09-19 12:51:34,027 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-19 12:51:34,028 INFO L276 IsEmpty]: Start isEmpty. Operand 1920 states and 2831 transitions. [2018-09-19 12:51:34,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2018-09-19 12:51:34,036 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 12:51:34,037 INFO L376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 12:51:34,037 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 12:51:34,038 INFO L82 PathProgramCache]: Analyzing trace with hash -2091389760, now seen corresponding path program 1 times [2018-09-19 12:51:34,038 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 12:51:34,038 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 166 with the following transitions: [2018-09-19 12:51:34,039 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2859], [2867], [2875], [2883], [2891], [2899], [2907], [2915], [2923], [2931], [2939], [2947], [2955], [2963], [2971], [2979], [2987], [2995], [3003], [3011], [3019], [3027], [3035], [3039], [3041], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3265], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-09-19 12:51:34,046 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-09-19 12:51:34,047 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 12:51:34,450 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 12:51:34,450 INFO L272 AbstractInterpreter]: Visited 108 different actions 311 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-09-19 12:51:34,482 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 12:51:34,800 INFO L232 lantSequenceWeakener]: Weakened 162 states. On average, predicates are now at 71.79% of their original sizes. [2018-09-19 12:51:34,800 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 12:51:35,402 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 12:51:35,403 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 12:51:35,403 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-19 12:51:35,403 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 12:51:35,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-19 12:51:35,405 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-19 12:51:35,406 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-09-19 12:51:35,407 INFO L87 Difference]: Start difference. First operand 1920 states and 2831 transitions. Second operand 10 states. [2018-09-19 12:51:57,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 12:51:57,983 INFO L93 Difference]: Finished difference Result 3841 states and 6447 transitions. [2018-09-19 12:51:57,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-19 12:51:57,984 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 165 [2018-09-19 12:51:57,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 12:51:58,001 INFO L225 Difference]: With dead ends: 3841 [2018-09-19 12:51:58,001 INFO L226 Difference]: Without dead ends: 2731 [2018-09-19 12:51:58,006 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 171 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2018-09-19 12:51:58,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2731 states. [2018-09-19 12:51:58,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2731 to 2726. [2018-09-19 12:51:58,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2726 states. [2018-09-19 12:51:58,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2726 states to 2726 states and 3662 transitions. [2018-09-19 12:51:58,071 INFO L78 Accepts]: Start accepts. Automaton has 2726 states and 3662 transitions. Word has length 165 [2018-09-19 12:51:58,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 12:51:58,072 INFO L480 AbstractCegarLoop]: Abstraction has 2726 states and 3662 transitions. [2018-09-19 12:51:58,072 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-19 12:51:58,072 INFO L276 IsEmpty]: Start isEmpty. Operand 2726 states and 3662 transitions. [2018-09-19 12:51:58,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-09-19 12:51:58,077 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 12:51:58,077 INFO L376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 12:51:58,077 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 12:51:58,078 INFO L82 PathProgramCache]: Analyzing trace with hash -275756727, now seen corresponding path program 1 times [2018-09-19 12:51:58,078 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 12:51:58,078 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 195 with the following transitions: [2018-09-19 12:51:58,079 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2859], [2867], [2875], [2883], [2891], [2899], [2907], [2915], [2923], [2931], [2939], [2947], [2955], [2963], [2971], [2979], [2987], [2995], [3003], [3011], [3019], [3027], [3035], [3039], [3041], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3305], [3309], [3313], [3317], [3321], [3325], [3329], [3333], [3344], [3355], [3366], [3370], [3374], [3378], [3382], [3386], [3390], [3394], [3398], [3402], [3406], [3409], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-09-19 12:51:58,085 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-09-19 12:51:58,085 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 12:51:58,241 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-19 12:51:58,497 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 12:51:58,497 INFO L272 AbstractInterpreter]: Visited 137 different actions 398 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-09-19 12:51:58,532 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 12:51:58,893 INFO L232 lantSequenceWeakener]: Weakened 191 states. On average, predicates are now at 71.65% of their original sizes. [2018-09-19 12:51:58,893 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 12:51:59,678 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 12:51:59,678 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 12:51:59,679 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-19 12:51:59,679 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 12:51:59,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-19 12:51:59,680 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-19 12:51:59,680 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-09-19 12:51:59,680 INFO L87 Difference]: Start difference. First operand 2726 states and 3662 transitions. Second operand 10 states. [2018-09-19 12:52:20,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 12:52:20,920 INFO L93 Difference]: Finished difference Result 4658 states and 7291 transitions. [2018-09-19 12:52:20,922 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-19 12:52:20,922 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 194 [2018-09-19 12:52:20,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 12:52:20,945 INFO L225 Difference]: With dead ends: 4658 [2018-09-19 12:52:20,945 INFO L226 Difference]: Without dead ends: 3548 [2018-09-19 12:52:20,949 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 200 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2018-09-19 12:52:20,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3548 states. [2018-09-19 12:52:21,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3548 to 3542. [2018-09-19 12:52:21,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3542 states. [2018-09-19 12:52:21,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3542 states to 3542 states and 4500 transitions. [2018-09-19 12:52:21,036 INFO L78 Accepts]: Start accepts. Automaton has 3542 states and 4500 transitions. Word has length 194 [2018-09-19 12:52:21,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 12:52:21,037 INFO L480 AbstractCegarLoop]: Abstraction has 3542 states and 4500 transitions. [2018-09-19 12:52:21,037 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-19 12:52:21,037 INFO L276 IsEmpty]: Start isEmpty. Operand 3542 states and 4500 transitions. [2018-09-19 12:52:21,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2018-09-19 12:52:21,045 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 12:52:21,046 INFO L376 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-19 12:52:21,046 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 12:52:21,046 INFO L82 PathProgramCache]: Analyzing trace with hash -1084648564, now seen corresponding path program 1 times [2018-09-19 12:52:21,047 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 12:52:21,047 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 260 with the following transitions: [2018-09-19 12:52:21,047 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2859], [2867], [2875], [2883], [2891], [2899], [2907], [2915], [2923], [2931], [2939], [2947], [2955], [2963], [2971], [2979], [2987], [2995], [3003], [3011], [3019], [3027], [3035], [3039], [3041], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3237], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3265], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-09-19 12:52:21,054 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-09-19 12:52:21,055 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 12:52:21,218 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-19 12:52:21,374 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 12:52:21,375 INFO L272 AbstractInterpreter]: Visited 109 different actions 423 times. Merged at 7 different actions 20 times. Never widened. Found 4 fixpoints after 1 different actions. Largest state had 26 variables. [2018-09-19 12:52:21,413 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 12:52:21,791 INFO L232 lantSequenceWeakener]: Weakened 256 states. On average, predicates are now at 71.47% of their original sizes. [2018-09-19 12:52:21,791 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 12:52:22,256 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 12:52:22,256 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 12:52:22,256 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-19 12:52:22,256 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 12:52:22,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-19 12:52:22,257 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-19 12:52:22,258 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-09-19 12:52:22,258 INFO L87 Difference]: Start difference. First operand 3542 states and 4500 transitions. Second operand 10 states. [2018-09-19 12:52:42,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 12:52:42,886 INFO L93 Difference]: Finished difference Result 6286 states and 8969 transitions. [2018-09-19 12:52:42,888 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-19 12:52:42,888 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 259 [2018-09-19 12:52:42,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 12:52:42,905 INFO L225 Difference]: With dead ends: 6286 [2018-09-19 12:52:42,906 INFO L226 Difference]: Without dead ends: 4360 [2018-09-19 12:52:42,912 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 265 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2018-09-19 12:52:42,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4360 states. [2018-09-19 12:52:43,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4360 to 4349. [2018-09-19 12:52:43,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4349 states. [2018-09-19 12:52:43,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4349 states to 4349 states and 5346 transitions. [2018-09-19 12:52:43,014 INFO L78 Accepts]: Start accepts. Automaton has 4349 states and 5346 transitions. Word has length 259 [2018-09-19 12:52:43,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 12:52:43,015 INFO L480 AbstractCegarLoop]: Abstraction has 4349 states and 5346 transitions. [2018-09-19 12:52:43,015 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-19 12:52:43,015 INFO L276 IsEmpty]: Start isEmpty. Operand 4349 states and 5346 transitions. [2018-09-19 12:52:43,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2018-09-19 12:52:43,020 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 12:52:43,020 INFO L376 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-19 12:52:43,021 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 12:52:43,021 INFO L82 PathProgramCache]: Analyzing trace with hash 109329268, now seen corresponding path program 1 times [2018-09-19 12:52:43,022 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 12:52:43,022 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 272 with the following transitions: [2018-09-19 12:52:43,022 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2859], [2867], [2875], [2883], [2891], [2899], [2907], [2915], [2923], [2931], [2939], [2947], [2955], [2963], [2971], [2979], [2987], [2995], [3003], [3011], [3019], [3027], [3035], [3039], [3041], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3265], [3266], [3270], [3274], [3278], [3282], [3285], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-09-19 12:52:43,033 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-09-19 12:52:43,033 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 12:52:43,200 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-19 12:52:43,462 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 12:52:43,462 INFO L272 AbstractInterpreter]: Visited 114 different actions 554 times. Merged at 7 different actions 28 times. Never widened. Found 5 fixpoints after 2 different actions. Largest state had 26 variables. [2018-09-19 12:52:43,501 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 12:52:43,902 INFO L232 lantSequenceWeakener]: Weakened 268 states. On average, predicates are now at 71.45% of their original sizes. [2018-09-19 12:52:43,902 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 12:52:44,061 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 12:52:44,062 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 12:52:44,062 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-19 12:52:44,062 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 12:52:44,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-19 12:52:44,063 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-19 12:52:44,063 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-09-19 12:52:44,063 INFO L87 Difference]: Start difference. First operand 4349 states and 5346 transitions. Second operand 10 states. [2018-09-19 12:53:04,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 12:53:04,934 INFO L93 Difference]: Finished difference Result 7115 states and 9845 transitions. [2018-09-19 12:53:04,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-19 12:53:04,936 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 271 [2018-09-19 12:53:04,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 12:53:04,956 INFO L225 Difference]: With dead ends: 7115 [2018-09-19 12:53:04,956 INFO L226 Difference]: Without dead ends: 5189 [2018-09-19 12:53:04,963 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 278 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2018-09-19 12:53:04,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5189 states. [2018-09-19 12:53:05,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5189 to 5167. [2018-09-19 12:53:05,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5167 states. [2018-09-19 12:53:05,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5167 states to 5167 states and 6284 transitions. [2018-09-19 12:53:05,055 INFO L78 Accepts]: Start accepts. Automaton has 5167 states and 6284 transitions. Word has length 271 [2018-09-19 12:53:05,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 12:53:05,056 INFO L480 AbstractCegarLoop]: Abstraction has 5167 states and 6284 transitions. [2018-09-19 12:53:05,056 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-19 12:53:05,056 INFO L276 IsEmpty]: Start isEmpty. Operand 5167 states and 6284 transitions. [2018-09-19 12:53:05,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2018-09-19 12:53:05,062 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 12:53:05,062 INFO L376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 12:53:05,063 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 12:53:05,063 INFO L82 PathProgramCache]: Analyzing trace with hash -1427921068, now seen corresponding path program 1 times [2018-09-19 12:53:05,063 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 12:53:05,064 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 288 with the following transitions: [2018-09-19 12:53:05,064 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2859], [2867], [2875], [2883], [2891], [2899], [2907], [2915], [2923], [2931], [2939], [2947], [2955], [2963], [2971], [2979], [2987], [2995], [3003], [3011], [3019], [3027], [3035], [3039], [3041], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3305], [3309], [3313], [3317], [3321], [3325], [3329], [3333], [3344], [3355], [3366], [3370], [3374], [3378], [3382], [3386], [3390], [3394], [3398], [3402], [3406], [3410], [3414], [3425], [3429], [3440], [3451], [3455], [3459], [3463], [3467], [3471], [3475], [3479], [3483], [3487], [3498], [3502], [3506], [3517], [3521], [3525], [3529], [3533], [3537], [3541], [3545], [3556], [3560], [3564], [3568], [3572], [3576], [3580], [3591], [3595], [3599], [3603], [3614], [3618], [3622], [3626], [3630], [3634], [3638], [3642], [3646], [3650], [3654], [3658], [3662], [3666], [3670], [3674], [3678], [3682], [3686], [3690], [3694], [3698], [3709], [3713], [3717], [3721], [3725], [3729], [3733], [3737], [3741], [3745], [3749], [3753], [3757], [3768], [3772], [3776], [3780], [3784], [3788], [3792], [3796], [3800], [3804], [3815], [3819], [3823], [3827], [3831], [3835], [3839], [3843], [3847], [3851], [3862], [3865], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-09-19 12:53:05,071 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-09-19 12:53:05,071 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 12:53:05,324 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-19 12:53:05,943 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 12:53:05,943 INFO L272 AbstractInterpreter]: Visited 230 different actions 677 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-09-19 12:53:05,979 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 12:53:06,420 INFO L232 lantSequenceWeakener]: Weakened 284 states. On average, predicates are now at 71.38% of their original sizes. [2018-09-19 12:53:06,421 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 12:53:06,635 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 12:53:06,636 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 12:53:06,636 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-19 12:53:06,636 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 12:53:06,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-19 12:53:06,637 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-19 12:53:06,637 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-09-19 12:53:06,637 INFO L87 Difference]: Start difference. First operand 5167 states and 6284 transitions. Second operand 10 states. [2018-09-19 12:53:18,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 12:53:18,336 INFO L93 Difference]: Finished difference Result 9545 states and 12511 transitions. [2018-09-19 12:53:18,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-19 12:53:18,344 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 287 [2018-09-19 12:53:18,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 12:53:18,377 INFO L225 Difference]: With dead ends: 9545 [2018-09-19 12:53:18,377 INFO L226 Difference]: Without dead ends: 6800 [2018-09-19 12:53:18,385 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 293 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2018-09-19 12:53:18,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6800 states. [2018-09-19 12:53:18,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6800 to 6794. [2018-09-19 12:53:18,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6794 states. [2018-09-19 12:53:18,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6794 states to 6794 states and 7947 transitions. [2018-09-19 12:53:18,509 INFO L78 Accepts]: Start accepts. Automaton has 6794 states and 7947 transitions. Word has length 287 [2018-09-19 12:53:18,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 12:53:18,510 INFO L480 AbstractCegarLoop]: Abstraction has 6794 states and 7947 transitions. [2018-09-19 12:53:18,510 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-19 12:53:18,510 INFO L276 IsEmpty]: Start isEmpty. Operand 6794 states and 7947 transitions. [2018-09-19 12:53:18,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2018-09-19 12:53:18,516 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 12:53:18,516 INFO L376 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-19 12:53:18,516 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 12:53:18,517 INFO L82 PathProgramCache]: Analyzing trace with hash -654485283, now seen corresponding path program 1 times [2018-09-19 12:53:18,517 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 12:53:18,517 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 296 with the following transitions: [2018-09-19 12:53:18,517 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2859], [2867], [2875], [2883], [2891], [2899], [2907], [2915], [2923], [2931], [2939], [2947], [2955], [2963], [2971], [2979], [2987], [2995], [3003], [3011], [3019], [3027], [3035], [3039], [3041], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3265], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3305], [3309], [3313], [3317], [3321], [3325], [3329], [3333], [3344], [3355], [3366], [3370], [3374], [3378], [3382], [3386], [3390], [3394], [3398], [3402], [3406], [3409], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-09-19 12:53:18,520 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-09-19 12:53:18,521 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 12:53:18,644 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-19 12:53:19,010 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 12:53:19,010 INFO L272 AbstractInterpreter]: Visited 138 different actions 675 times. Merged at 7 different actions 29 times. Never widened. Found 6 fixpoints after 1 different actions. Largest state had 26 variables. [2018-09-19 12:53:19,017 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 12:53:19,403 INFO L232 lantSequenceWeakener]: Weakened 292 states. On average, predicates are now at 71.4% of their original sizes. [2018-09-19 12:53:19,404 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 12:53:19,512 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 12:53:19,512 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 12:53:19,513 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-19 12:53:19,513 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 12:53:19,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-19 12:53:19,513 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-19 12:53:19,514 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-09-19 12:53:19,514 INFO L87 Difference]: Start difference. First operand 6794 states and 7947 transitions. Second operand 10 states. [2018-09-19 12:53:38,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 12:53:38,999 INFO L93 Difference]: Finished difference Result 13654 states and 16856 transitions. [2018-09-19 12:53:38,999 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-09-19 12:53:38,999 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 295 [2018-09-19 12:53:39,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 12:53:39,026 INFO L225 Difference]: With dead ends: 13654 [2018-09-19 12:53:39,027 INFO L226 Difference]: Without dead ends: 9279 [2018-09-19 12:53:39,039 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 302 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2018-09-19 12:53:39,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9279 states. [2018-09-19 12:53:39,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9279 to 9252. [2018-09-19 12:53:39,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9252 states. [2018-09-19 12:53:39,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9252 states to 9252 states and 10537 transitions. [2018-09-19 12:53:39,198 INFO L78 Accepts]: Start accepts. Automaton has 9252 states and 10537 transitions. Word has length 295 [2018-09-19 12:53:39,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 12:53:39,199 INFO L480 AbstractCegarLoop]: Abstraction has 9252 states and 10537 transitions. [2018-09-19 12:53:39,199 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-19 12:53:39,199 INFO L276 IsEmpty]: Start isEmpty. Operand 9252 states and 10537 transitions. [2018-09-19 12:53:39,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2018-09-19 12:53:39,207 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 12:53:39,207 INFO L376 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 12:53:39,208 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 12:53:39,208 INFO L82 PathProgramCache]: Analyzing trace with hash 85076024, now seen corresponding path program 1 times [2018-09-19 12:53:39,208 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 12:53:39,208 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 338 with the following transitions: [2018-09-19 12:53:39,209 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2859], [2867], [2875], [2883], [2891], [2899], [2907], [2915], [2923], [2931], [2939], [2947], [2955], [2963], [2971], [2979], [2987], [2995], [3003], [3011], [3019], [3027], [3035], [3039], [3041], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3152], [3156], [3159], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3237], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3265], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-09-19 12:53:39,211 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-09-19 12:53:39,212 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 12:53:39,365 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-19 12:53:40,784 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 12:53:40,784 INFO L272 AbstractInterpreter]: Visited 110 different actions 647 times. Merged at 8 different actions 42 times. Widened at 1 different actions 1 times. Found 10 fixpoints after 1 different actions. Largest state had 26 variables. [2018-09-19 12:53:40,798 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 12:53:41,354 INFO L232 lantSequenceWeakener]: Weakened 334 states. On average, predicates are now at 71.35% of their original sizes. [2018-09-19 12:53:41,354 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 12:53:41,462 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 12:53:41,463 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 12:53:41,463 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-19 12:53:41,463 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 12:53:41,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-19 12:53:41,464 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-19 12:53:41,464 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-09-19 12:53:41,464 INFO L87 Difference]: Start difference. First operand 9252 states and 10537 transitions. Second operand 10 states. [2018-09-19 12:53:53,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 12:53:53,704 INFO L93 Difference]: Finished difference Result 15294 states and 18522 transitions. [2018-09-19 12:53:53,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-19 12:53:53,705 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 337 [2018-09-19 12:53:53,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 12:53:53,727 INFO L225 Difference]: With dead ends: 15294 [2018-09-19 12:53:53,728 INFO L226 Difference]: Without dead ends: 10085 [2018-09-19 12:53:53,739 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 343 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2018-09-19 12:53:53,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10085 states. [2018-09-19 12:53:53,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10085 to 10061. [2018-09-19 12:53:53,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10061 states. [2018-09-19 12:53:53,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10061 states to 10061 states and 11413 transitions. [2018-09-19 12:53:53,886 INFO L78 Accepts]: Start accepts. Automaton has 10061 states and 11413 transitions. Word has length 337 [2018-09-19 12:53:53,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 12:53:53,887 INFO L480 AbstractCegarLoop]: Abstraction has 10061 states and 11413 transitions. [2018-09-19 12:53:53,887 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-19 12:53:53,887 INFO L276 IsEmpty]: Start isEmpty. Operand 10061 states and 11413 transitions. [2018-09-19 12:53:53,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2018-09-19 12:53:53,896 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 12:53:53,897 INFO L376 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, 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] [2018-09-19 12:53:53,897 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 12:53:53,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1891702428, now seen corresponding path program 1 times [2018-09-19 12:53:53,897 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 12:53:53,897 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 348 with the following transitions: [2018-09-19 12:53:53,898 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2859], [2867], [2875], [2883], [2891], [2899], [2907], [2915], [2923], [2931], [2939], [2947], [2955], [2963], [2971], [2979], [2987], [2995], [3003], [3011], [3019], [3027], [3035], [3039], [3041], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3151], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3265], [3266], [3270], [3274], [3278], [3282], [3285], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-09-19 12:53:53,900 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-09-19 12:53:53,900 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 12:53:54,056 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-19 12:53:54,444 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 12:53:54,444 INFO L272 AbstractInterpreter]: Visited 115 different actions 675 times. Merged at 8 different actions 40 times. Widened at 1 different actions 1 times. Found 9 fixpoints after 1 different actions. Largest state had 26 variables. [2018-09-19 12:53:54,458 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 12:53:54,831 INFO L232 lantSequenceWeakener]: Weakened 344 states. On average, predicates are now at 71.33% of their original sizes. [2018-09-19 12:53:54,832 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 12:53:54,926 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 12:53:54,926 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 12:53:54,926 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-19 12:53:54,926 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 12:53:54,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-19 12:53:54,927 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-19 12:53:54,927 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-09-19 12:53:54,927 INFO L87 Difference]: Start difference. First operand 10061 states and 11413 transitions. Second operand 10 states. [2018-09-19 12:54:10,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 12:54:10,926 INFO L93 Difference]: Finished difference Result 17756 states and 21202 transitions. [2018-09-19 12:54:10,926 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-09-19 12:54:10,927 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 347 [2018-09-19 12:54:10,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 12:54:10,959 INFO L225 Difference]: With dead ends: 17756 [2018-09-19 12:54:10,960 INFO L226 Difference]: Without dead ends: 11734 [2018-09-19 12:54:10,974 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 354 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2018-09-19 12:54:10,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11734 states. [2018-09-19 12:54:11,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11734 to 11704. [2018-09-19 12:54:11,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11704 states. [2018-09-19 12:54:11,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11704 states to 11704 states and 13240 transitions. [2018-09-19 12:54:11,173 INFO L78 Accepts]: Start accepts. Automaton has 11704 states and 13240 transitions. Word has length 347 [2018-09-19 12:54:11,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 12:54:11,174 INFO L480 AbstractCegarLoop]: Abstraction has 11704 states and 13240 transitions. [2018-09-19 12:54:11,174 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-19 12:54:11,174 INFO L276 IsEmpty]: Start isEmpty. Operand 11704 states and 13240 transitions. [2018-09-19 12:54:11,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2018-09-19 12:54:11,184 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 12:54:11,184 INFO L376 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 12:54:11,184 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 12:54:11,185 INFO L82 PathProgramCache]: Analyzing trace with hash 1205897427, now seen corresponding path program 1 times [2018-09-19 12:54:11,185 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 12:54:11,185 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 363 with the following transitions: [2018-09-19 12:54:11,185 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2859], [2867], [2875], [2883], [2891], [2899], [2907], [2915], [2923], [2931], [2939], [2947], [2955], [2963], [2971], [2979], [2987], [2995], [3003], [3011], [3019], [3027], [3035], [3039], [3041], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3210], [3213], [3217], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3265], [3266], [3270], [3274], [3278], [3282], [3285], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-09-19 12:54:11,188 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-09-19 12:54:11,188 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 12:54:11,337 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-19 12:54:11,703 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 12:54:11,703 INFO L272 AbstractInterpreter]: Visited 117 different actions 679 times. Merged at 8 different actions 40 times. Widened at 1 different actions 1 times. Found 8 fixpoints after 2 different actions. Largest state had 26 variables. [2018-09-19 12:54:11,742 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 12:54:12,491 INFO L232 lantSequenceWeakener]: Weakened 359 states. On average, predicates are now at 71.37% of their original sizes. [2018-09-19 12:54:12,492 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 12:54:13,628 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 12:54:13,629 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 12:54:13,629 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-09-19 12:54:13,629 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 12:54:13,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-19 12:54:13,630 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-19 12:54:13,630 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2018-09-19 12:54:13,630 INFO L87 Difference]: Start difference. First operand 11704 states and 13240 transitions. Second operand 12 states. [2018-09-19 12:54:50,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 12:54:50,197 INFO L93 Difference]: Finished difference Result 22751 states and 29077 transitions. [2018-09-19 12:54:50,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-09-19 12:54:50,197 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 362 [2018-09-19 12:54:50,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 12:54:50,238 INFO L225 Difference]: With dead ends: 22751 [2018-09-19 12:54:50,238 INFO L226 Difference]: Without dead ends: 15901 [2018-09-19 12:54:50,254 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 387 GetRequests, 351 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=220, Invalid=1186, Unknown=0, NotChecked=0, Total=1406 [2018-09-19 12:54:50,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15901 states. [2018-09-19 12:54:50,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15901 to 15812. [2018-09-19 12:54:50,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15812 states. [2018-09-19 12:54:50,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15812 states to 15812 states and 18058 transitions. [2018-09-19 12:54:50,470 INFO L78 Accepts]: Start accepts. Automaton has 15812 states and 18058 transitions. Word has length 362 [2018-09-19 12:54:50,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 12:54:50,471 INFO L480 AbstractCegarLoop]: Abstraction has 15812 states and 18058 transitions. [2018-09-19 12:54:50,471 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-09-19 12:54:50,471 INFO L276 IsEmpty]: Start isEmpty. Operand 15812 states and 18058 transitions. [2018-09-19 12:54:50,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2018-09-19 12:54:50,480 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 12:54:50,481 INFO L376 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 12:54:50,481 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 12:54:50,481 INFO L82 PathProgramCache]: Analyzing trace with hash -964784320, now seen corresponding path program 1 times [2018-09-19 12:54:50,481 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 12:54:50,482 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 366 with the following transitions: [2018-09-19 12:54:50,482 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2859], [2867], [2875], [2883], [2891], [2899], [2907], [2915], [2923], [2931], [2939], [2947], [2955], [2963], [2971], [2979], [2987], [2995], [3003], [3011], [3019], [3027], [3035], [3039], [3041], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3237], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3265], [3266], [3270], [3274], [3278], [3282], [3285], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-09-19 12:54:50,484 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-09-19 12:54:50,484 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 12:54:50,600 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-19 12:54:50,864 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 12:54:50,864 INFO L272 AbstractInterpreter]: Visited 115 different actions 680 times. Merged at 8 different actions 45 times. Widened at 1 different actions 1 times. Found 11 fixpoints after 2 different actions. Largest state had 26 variables. [2018-09-19 12:54:50,874 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 12:54:51,286 INFO L232 lantSequenceWeakener]: Weakened 362 states. On average, predicates are now at 71.31% of their original sizes. [2018-09-19 12:54:51,288 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 12:54:51,389 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 12:54:51,389 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 12:54:51,389 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-19 12:54:51,389 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 12:54:51,390 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-19 12:54:51,390 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-19 12:54:51,390 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-09-19 12:54:51,390 INFO L87 Difference]: Start difference. First operand 15812 states and 18058 transitions. Second operand 10 states. Received shutdown request... [2018-09-19 12:55:04,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-09-19 12:55:04,204 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-19 12:55:04,210 WARN L206 ceAbstractionStarter]: Timeout [2018-09-19 12:55:04,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.09 12:55:04 BoogieIcfgContainer [2018-09-19 12:55:04,210 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-19 12:55:04,211 INFO L168 Benchmark]: Toolchain (without parser) took 239648.28 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 2.9 GB in the end (delta: -1.5 GB). Peak memory consumption was 876.9 MB. Max. memory is 7.1 GB. [2018-09-19 12:55:04,213 INFO L168 Benchmark]: CDTParser took 0.16 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. [2018-09-19 12:55:04,214 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2891.00 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 348.8 MB). Peak memory consumption was 348.8 MB. Max. memory is 7.1 GB. [2018-09-19 12:55:04,214 INFO L168 Benchmark]: Boogie Procedure Inliner took 291.46 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-09-19 12:55:04,215 INFO L168 Benchmark]: Boogie Preprocessor took 1260.97 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 995.1 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. [2018-09-19 12:55:04,216 INFO L168 Benchmark]: RCFGBuilder took 12173.17 ms. Allocated memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: 162.5 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -22.6 MB). Peak memory consumption was 753.6 MB. Max. memory is 7.1 GB. [2018-09-19 12:55:04,217 INFO L168 Benchmark]: TraceAbstraction took 223024.01 ms. Allocated memory was 2.7 GB in the beginning and 3.9 GB in the end (delta: 1.2 GB). Free memory was 2.4 GB in the beginning and 2.9 GB in the end (delta: -554.6 MB). Peak memory consumption was 667.0 MB. Max. memory is 7.1 GB. [2018-09-19 12:55:04,223 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 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 2891.00 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 348.8 MB). Peak memory consumption was 348.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 291.46 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1260.97 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 995.1 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 12173.17 ms. Allocated memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: 162.5 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -22.6 MB). Peak memory consumption was 753.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 223024.01 ms. Allocated memory was 2.7 GB in the beginning and 3.9 GB in the end (delta: 1.2 GB). Free memory was 2.4 GB in the beginning and 2.9 GB in the end (delta: -554.6 MB). Peak memory consumption was 667.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 183]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 183). Cancelled while BasicCegarLoop was constructing difference of abstraction (15812states) and FLOYD_HOARE automaton (currently 17 states, 10 states before enhancement), while ReachableStatesComputation was computing reachable states (18150 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 222.9s OverallTime, 11 OverallIterations, 4 TraceHistogramMax, 205.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 13034 SDtfs, 30559 SDslu, 9795 SDs, 0 SdLazy, 128375 SolverSat, 9879 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 176.7s Time, PredicateUnifierStatistics: 22 DeclaredPredicates, 3028 GetRequests, 2849 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 678 ImplicationChecksByTransitivity, 5.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15812occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 6.7s AbstIntTime, 11 AbstIntIterations, 11 AbstIntStrong, 0.997514159444981 AbsIntWeakeningRatio, 0.10017035775127768 AbsIntAvgWeakeningVarsNumRemoved, 23.531516183986373 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.3s AutomataMinimizationTime, 10 MinimizatonAttempts, 222 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: No data available, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem13_label13_true-unreach-call.c_svcomp-Reach-64bit-ToothlessTaipan_INTCON-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-19_12-55-04-237.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem13_label13_true-unreach-call.c_svcomp-Reach-64bit-ToothlessTaipan_INTCON-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-19_12-55-04-237.csv Completed graceful shutdown