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_label31_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-19 12:52:32,674 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-19 12:52:32,676 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-19 12:52:32,688 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-19 12:52:32,689 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-19 12:52:32,690 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-19 12:52:32,691 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-19 12:52:32,693 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-19 12:52:32,694 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-19 12:52:32,695 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-19 12:52:32,696 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-19 12:52:32,696 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-19 12:52:32,697 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-19 12:52:32,698 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-19 12:52:32,699 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-19 12:52:32,700 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-19 12:52:32,701 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-19 12:52:32,702 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-19 12:52:32,704 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-19 12:52:32,706 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-19 12:52:32,707 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-19 12:52:32,708 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-19 12:52:32,711 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-19 12:52:32,711 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-19 12:52:32,711 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-19 12:52:32,712 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-19 12:52:32,713 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-19 12:52:32,714 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-19 12:52:32,715 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-19 12:52:32,716 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-19 12:52:32,716 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-19 12:52:32,717 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-19 12:52:32,717 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-19 12:52:32,718 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-19 12:52:32,719 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-19 12:52:32,719 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-19 12:52:32,720 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 12:52:32,746 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-19 12:52:32,746 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-19 12:52:32,748 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-19 12:52:32,748 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-19 12:52:32,748 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-19 12:52:32,748 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-19 12:52:32,749 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-19 12:52:32,749 INFO L133 SettingsManager]: * Octagon Domain=false [2018-09-19 12:52:32,749 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-19 12:52:32,749 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-19 12:52:32,750 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-19 12:52:32,750 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-19 12:52:32,751 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-19 12:52:32,751 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-19 12:52:32,751 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-19 12:52:32,751 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-19 12:52:32,751 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-19 12:52:32,752 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-19 12:52:32,752 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-19 12:52:32,752 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-19 12:52:32,752 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-19 12:52:32,754 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-19 12:52:32,754 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-19 12:52:32,754 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-19 12:52:32,754 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-19 12:52:32,755 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-19 12:52:32,755 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-19 12:52:32,755 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-19 12:52:32,755 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-19 12:52:32,755 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-19 12:52:32,755 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-19 12:52:32,756 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-19 12:52:32,756 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-19 12:52:32,756 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-19 12:52:32,811 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-19 12:52:32,827 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-19 12:52:32,834 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-19 12:52:32,835 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-19 12:52:32,836 INFO L276 PluginConnector]: CDTParser initialized [2018-09-19 12:52:32,836 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label31_true-unreach-call.c [2018-09-19 12:52:33,172 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3627bb5c/4c00bbe8e4ab44f8a5f70a565aab6b85/FLAGdfc1296a4 [2018-09-19 12:52:33,716 INFO L277 CDTParser]: Found 1 translation units. [2018-09-19 12:52:33,717 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label31_true-unreach-call.c [2018-09-19 12:52:33,758 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3627bb5c/4c00bbe8e4ab44f8a5f70a565aab6b85/FLAGdfc1296a4 [2018-09-19 12:52:33,779 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3627bb5c/4c00bbe8e4ab44f8a5f70a565aab6b85 [2018-09-19 12:52:33,792 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-19 12:52:33,795 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-19 12:52:33,796 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-19 12:52:33,797 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-19 12:52:33,805 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-19 12:52:33,806 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 12:52:33" (1/1) ... [2018-09-19 12:52:33,809 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@612a6518 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 12:52:33, skipping insertion in model container [2018-09-19 12:52:33,810 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 12:52:33" (1/1) ... [2018-09-19 12:52:33,822 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-19 12:52:35,319 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 12:52:35,339 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-19 12:52:36,216 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 12:52:36,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 12:52:36 WrapperNode [2018-09-19 12:52:36,625 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-19 12:52:36,626 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-19 12:52:36,626 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-19 12:52:36,627 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-19 12:52:36,636 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 12:52:36" (1/1) ... [2018-09-19 12:52:36,766 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 12:52:36" (1/1) ... [2018-09-19 12:52:36,946 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-19 12:52:36,947 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-19 12:52:36,947 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-19 12:52:36,947 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-19 12:52:37,731 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 12:52:36" (1/1) ... [2018-09-19 12:52:37,732 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 12:52:36" (1/1) ... [2018-09-19 12:52:37,773 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 12:52:36" (1/1) ... [2018-09-19 12:52:37,774 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 12:52:36" (1/1) ... [2018-09-19 12:52:38,014 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 12:52:36" (1/1) ... [2018-09-19 12:52:38,052 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 12:52:36" (1/1) ... [2018-09-19 12:52:38,122 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 12:52:36" (1/1) ... [2018-09-19 12:52:38,182 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-19 12:52:38,182 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-19 12:52:38,183 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-19 12:52:38,183 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-19 12:52:38,185 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 12:52:36" (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 12:52:38,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-19 12:52:38,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-19 12:52:38,261 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-09-19 12:52:38,261 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-09-19 12:52:38,261 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-19 12:52:38,262 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-19 12:52:38,262 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-19 12:52:38,262 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-19 12:52:38,262 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-19 12:52:38,262 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-19 12:52:38,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-19 12:52:38,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-19 12:52:38,263 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-19 12:52:38,263 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-19 12:52:48,763 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-19 12:52:48,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 12:52:48 BoogieIcfgContainer [2018-09-19 12:52:48,764 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-19 12:52:48,765 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-19 12:52:48,765 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-19 12:52:48,768 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-19 12:52:48,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.09 12:52:33" (1/3) ... [2018-09-19 12:52:48,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55e2147 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 12:52:48, skipping insertion in model container [2018-09-19 12:52:48,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 12:52:36" (2/3) ... [2018-09-19 12:52:48,770 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55e2147 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 12:52:48, skipping insertion in model container [2018-09-19 12:52:48,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 12:52:48" (3/3) ... [2018-09-19 12:52:48,772 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label31_true-unreach-call.c [2018-09-19 12:52:48,782 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-19 12:52:48,791 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-19 12:52:48,861 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-19 12:52:48,861 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-19 12:52:48,862 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-19 12:52:48,862 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-19 12:52:48,862 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-19 12:52:48,862 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-19 12:52:48,862 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-19 12:52:48,862 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-19 12:52:48,863 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-19 12:52:48,905 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-09-19 12:52:48,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-09-19 12:52:48,915 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 12:52:48,916 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] [2018-09-19 12:52:48,917 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 12:52:48,923 INFO L82 PathProgramCache]: Analyzing trace with hash 1693652115, now seen corresponding path program 1 times [2018-09-19 12:52:48,926 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 12:52:48,927 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 48 with the following transitions: [2018-09-19 12:52:48,930 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], [2903], [2905], [4242], [4246], [4252], [4256], [4269], [4270], [4271], [4273] [2018-09-19 12:52:48,975 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-09-19 12:52:48,975 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 12:52:49,267 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 12:52:49,269 INFO L272 AbstractInterpreter]: Visited 46 different actions 46 times. Never merged. Never widened. Never found a fixpoint. Largest state had 25 variables. [2018-09-19 12:52:49,318 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 12:52:49,501 INFO L232 lantSequenceWeakener]: Weakened 44 states. On average, predicates are now at 72.57% of their original sizes. [2018-09-19 12:52:49,501 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 12:52:49,726 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 12:52:49,729 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 12:52:49,729 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-19 12:52:49,729 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 12:52:49,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-19 12:52:49,743 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-19 12:52:49,744 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-19 12:52:49,747 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 6 states. [2018-09-19 12:53:03,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 12:53:03,630 INFO L93 Difference]: Finished difference Result 3044 states and 5648 transitions. [2018-09-19 12:53:03,635 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-19 12:53:03,637 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 47 [2018-09-19 12:53:03,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 12:53:03,675 INFO L225 Difference]: With dead ends: 3044 [2018-09-19 12:53:03,675 INFO L226 Difference]: Without dead ends: 1922 [2018-09-19 12:53:03,687 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 46 GetRequests, 42 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 12:53:03,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1922 states. [2018-09-19 12:53:03,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1922 to 1920. [2018-09-19 12:53:03,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1920 states. [2018-09-19 12:53:03,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1920 states to 1920 states and 2831 transitions. [2018-09-19 12:53:03,851 INFO L78 Accepts]: Start accepts. Automaton has 1920 states and 2831 transitions. Word has length 47 [2018-09-19 12:53:03,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 12:53:03,852 INFO L480 AbstractCegarLoop]: Abstraction has 1920 states and 2831 transitions. [2018-09-19 12:53:03,852 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-19 12:53:03,853 INFO L276 IsEmpty]: Start isEmpty. Operand 1920 states and 2831 transitions. [2018-09-19 12:53:03,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-09-19 12:53:03,862 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 12:53:03,862 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:53:03,863 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 12:53:03,863 INFO L82 PathProgramCache]: Analyzing trace with hash 1818572224, now seen corresponding path program 1 times [2018-09-19 12:53:03,863 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 12:53:03,864 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 149 with the following transitions: [2018-09-19 12:53:03,864 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], [2903], [2905], [2908], [2916], [2924], [2932], [2940], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [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 12:53:03,872 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-09-19 12:53:03,872 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 12:53:04,290 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 12:53:04,291 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 12:53:04,330 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 12:53:04,616 INFO L232 lantSequenceWeakener]: Weakened 145 states. On average, predicates are now at 71.42% of their original sizes. [2018-09-19 12:53:04,617 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 12:53:05,232 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 12:53:05,232 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 12:53:05,232 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-19 12:53:05,232 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 12:53:05,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-19 12:53:05,235 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-19 12:53:05,235 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-09-19 12:53:05,235 INFO L87 Difference]: Start difference. First operand 1920 states and 2831 transitions. Second operand 10 states. [2018-09-19 12:53:27,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 12:53:27,908 INFO L93 Difference]: Finished difference Result 3841 states and 6447 transitions. [2018-09-19 12:53:27,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-19 12:53:27,909 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 148 [2018-09-19 12:53:27,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 12:53:27,922 INFO L225 Difference]: With dead ends: 3841 [2018-09-19 12:53:27,923 INFO L226 Difference]: Without dead ends: 2731 [2018-09-19 12:53:27,928 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 154 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2018-09-19 12:53:27,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2731 states. [2018-09-19 12:53:27,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2731 to 2726. [2018-09-19 12:53:27,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2726 states. [2018-09-19 12:53:27,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2726 states to 2726 states and 3662 transitions. [2018-09-19 12:53:27,991 INFO L78 Accepts]: Start accepts. Automaton has 2726 states and 3662 transitions. Word has length 148 [2018-09-19 12:53:27,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 12:53:27,992 INFO L480 AbstractCegarLoop]: Abstraction has 2726 states and 3662 transitions. [2018-09-19 12:53:27,992 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-19 12:53:27,992 INFO L276 IsEmpty]: Start isEmpty. Operand 2726 states and 3662 transitions. [2018-09-19 12:53:27,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-09-19 12:53:27,997 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 12:53:27,997 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:53:27,998 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 12:53:27,998 INFO L82 PathProgramCache]: Analyzing trace with hash 648553781, now seen corresponding path program 1 times [2018-09-19 12:53:27,998 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 12:53:27,998 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 178 with the following transitions: [2018-09-19 12:53:27,999 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], [2903], [2905], [2908], [2916], [2924], [2932], [2940], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [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 12:53:28,004 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-09-19 12:53:28,005 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 12:53:28,179 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-19 12:53:28,523 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 12:53:28,524 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 12:53:28,566 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 12:53:28,945 INFO L232 lantSequenceWeakener]: Weakened 174 states. On average, predicates are now at 71.32% of their original sizes. [2018-09-19 12:53:28,945 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 12:53:29,691 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 12:53:29,691 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 12:53:29,691 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-19 12:53:29,692 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 12:53:29,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-19 12:53:29,692 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-19 12:53:29,693 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-09-19 12:53:29,693 INFO L87 Difference]: Start difference. First operand 2726 states and 3662 transitions. Second operand 10 states. [2018-09-19 12:53:42,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 12:53:42,836 INFO L93 Difference]: Finished difference Result 4658 states and 7291 transitions. [2018-09-19 12:53:42,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-19 12:53:42,841 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 177 [2018-09-19 12:53:42,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 12:53:42,859 INFO L225 Difference]: With dead ends: 4658 [2018-09-19 12:53:42,860 INFO L226 Difference]: Without dead ends: 3548 [2018-09-19 12:53:42,864 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 183 GetRequests, 168 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 12:53:42,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3548 states. [2018-09-19 12:53:42,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3548 to 3542. [2018-09-19 12:53:42,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3542 states. [2018-09-19 12:53:42,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3542 states to 3542 states and 4500 transitions. [2018-09-19 12:53:42,946 INFO L78 Accepts]: Start accepts. Automaton has 3542 states and 4500 transitions. Word has length 177 [2018-09-19 12:53:42,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 12:53:42,947 INFO L480 AbstractCegarLoop]: Abstraction has 3542 states and 4500 transitions. [2018-09-19 12:53:42,947 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-19 12:53:42,947 INFO L276 IsEmpty]: Start isEmpty. Operand 3542 states and 4500 transitions. [2018-09-19 12:53:42,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-09-19 12:53:42,953 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 12:53:42,954 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 12:53:42,954 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 12:53:42,954 INFO L82 PathProgramCache]: Analyzing trace with hash -606321517, now seen corresponding path program 1 times [2018-09-19 12:53:42,955 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 12:53:42,955 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 243 with the following transitions: [2018-09-19 12:53:42,955 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], [2903], [2905], [2908], [2916], [2924], [2932], [2940], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [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 12:53:42,959 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-09-19 12:53:42,960 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 12:53:43,129 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-19 12:53:43,296 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 12:53:43,296 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 12:53:43,334 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 12:53:43,803 INFO L232 lantSequenceWeakener]: Weakened 239 states. On average, predicates are now at 71.22% of their original sizes. [2018-09-19 12:53:43,804 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 12:53:44,227 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 12:53:44,227 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 12:53:44,229 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-19 12:53:44,230 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 12:53:44,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-19 12:53:44,233 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-19 12:53:44,233 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-09-19 12:53:44,233 INFO L87 Difference]: Start difference. First operand 3542 states and 4500 transitions. Second operand 10 states. [2018-09-19 12:54:02,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 12:54:02,596 INFO L93 Difference]: Finished difference Result 6286 states and 8969 transitions. [2018-09-19 12:54:02,601 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-19 12:54:02,602 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 242 [2018-09-19 12:54:02,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 12:54:02,623 INFO L225 Difference]: With dead ends: 6286 [2018-09-19 12:54:02,623 INFO L226 Difference]: Without dead ends: 4360 [2018-09-19 12:54:02,630 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 248 GetRequests, 233 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 12:54:02,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4360 states. [2018-09-19 12:54:02,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4360 to 4349. [2018-09-19 12:54:02,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4349 states. [2018-09-19 12:54:02,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4349 states to 4349 states and 5346 transitions. [2018-09-19 12:54:02,739 INFO L78 Accepts]: Start accepts. Automaton has 4349 states and 5346 transitions. Word has length 242 [2018-09-19 12:54:02,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 12:54:02,739 INFO L480 AbstractCegarLoop]: Abstraction has 4349 states and 5346 transitions. [2018-09-19 12:54:02,740 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-19 12:54:02,740 INFO L276 IsEmpty]: Start isEmpty. Operand 4349 states and 5346 transitions. [2018-09-19 12:54:02,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2018-09-19 12:54:02,745 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 12:54:02,745 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 12:54:02,746 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 12:54:02,746 INFO L82 PathProgramCache]: Analyzing trace with hash -596500565, now seen corresponding path program 1 times [2018-09-19 12:54:02,746 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 12:54:02,747 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 255 with the following transitions: [2018-09-19 12:54:02,747 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], [2903], [2905], [2908], [2916], [2924], [2932], [2940], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [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 12:54:02,753 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-09-19 12:54:02,753 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 12:54:02,924 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-19 12:54:03,210 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 12:54:03,210 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 12:54:03,241 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 12:54:03,614 INFO L232 lantSequenceWeakener]: Weakened 251 states. On average, predicates are now at 71.2% of their original sizes. [2018-09-19 12:54:03,615 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 12:54:03,763 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 12:54:03,764 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 12:54:03,764 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-19 12:54:03,764 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 12:54:03,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-19 12:54:03,765 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-19 12:54:03,765 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-09-19 12:54:03,766 INFO L87 Difference]: Start difference. First operand 4349 states and 5346 transitions. Second operand 10 states. [2018-09-19 12:54:19,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 12:54:19,173 INFO L93 Difference]: Finished difference Result 7115 states and 9845 transitions. [2018-09-19 12:54:19,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-19 12:54:19,178 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 254 [2018-09-19 12:54:19,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 12:54:19,200 INFO L225 Difference]: With dead ends: 7115 [2018-09-19 12:54:19,200 INFO L226 Difference]: Without dead ends: 5189 [2018-09-19 12:54:19,207 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 261 GetRequests, 245 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 12:54:19,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5189 states. [2018-09-19 12:54:19,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5189 to 5167. [2018-09-19 12:54:19,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5167 states. [2018-09-19 12:54:19,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5167 states to 5167 states and 6284 transitions. [2018-09-19 12:54:19,313 INFO L78 Accepts]: Start accepts. Automaton has 5167 states and 6284 transitions. Word has length 254 [2018-09-19 12:54:19,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 12:54:19,314 INFO L480 AbstractCegarLoop]: Abstraction has 5167 states and 6284 transitions. [2018-09-19 12:54:19,314 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-19 12:54:19,314 INFO L276 IsEmpty]: Start isEmpty. Operand 5167 states and 6284 transitions. [2018-09-19 12:54:19,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2018-09-19 12:54:19,319 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 12:54:19,320 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:54:19,320 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 12:54:19,320 INFO L82 PathProgramCache]: Analyzing trace with hash 2128979308, now seen corresponding path program 1 times [2018-09-19 12:54:19,321 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 12:54:19,321 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 271 with the following transitions: [2018-09-19 12:54:19,321 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], [2903], [2905], [2908], [2916], [2924], [2932], [2940], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [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 12:54:19,329 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-09-19 12:54:19,330 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 12:54:19,556 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-19 12:54:20,152 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 12:54:20,152 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 12:54:20,177 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 12:54:20,574 INFO L232 lantSequenceWeakener]: Weakened 267 states. On average, predicates are now at 71.15% of their original sizes. [2018-09-19 12:54:20,575 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 12:54:20,828 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 12:54:20,828 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 12:54:20,828 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-19 12:54:20,829 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 12:54:20,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-19 12:54:20,829 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-19 12:54:20,829 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-09-19 12:54:20,830 INFO L87 Difference]: Start difference. First operand 5167 states and 6284 transitions. Second operand 10 states. [2018-09-19 12:54:31,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 12:54:31,782 INFO L93 Difference]: Finished difference Result 9545 states and 12511 transitions. [2018-09-19 12:54:31,783 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-19 12:54:31,783 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 270 [2018-09-19 12:54:31,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 12:54:31,806 INFO L225 Difference]: With dead ends: 9545 [2018-09-19 12:54:31,807 INFO L226 Difference]: Without dead ends: 6800 [2018-09-19 12:54:31,813 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 276 GetRequests, 261 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 12:54:31,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6800 states. [2018-09-19 12:54:31,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6800 to 6794. [2018-09-19 12:54:31,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6794 states. [2018-09-19 12:54:31,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6794 states to 6794 states and 7947 transitions. [2018-09-19 12:54:31,931 INFO L78 Accepts]: Start accepts. Automaton has 6794 states and 7947 transitions. Word has length 270 [2018-09-19 12:54:31,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 12:54:31,932 INFO L480 AbstractCegarLoop]: Abstraction has 6794 states and 7947 transitions. [2018-09-19 12:54:31,932 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-19 12:54:31,932 INFO L276 IsEmpty]: Start isEmpty. Operand 6794 states and 7947 transitions. [2018-09-19 12:54:31,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2018-09-19 12:54:31,938 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 12:54:31,938 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 12:54:31,939 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 12:54:31,939 INFO L82 PathProgramCache]: Analyzing trace with hash 1078648610, now seen corresponding path program 1 times [2018-09-19 12:54:31,939 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 12:54:31,939 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 279 with the following transitions: [2018-09-19 12:54:31,940 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], [2903], [2905], [2908], [2916], [2924], [2932], [2940], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [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 12:54:31,942 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-09-19 12:54:31,943 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 12:54:32,060 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-19 12:54:32,398 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 12:54:32,398 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 12:54:32,430 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 12:54:32,776 INFO L232 lantSequenceWeakener]: Weakened 275 states. On average, predicates are now at 71.17% of their original sizes. [2018-09-19 12:54:32,776 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 12:54:32,951 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 12:54:32,952 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 12:54:32,952 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-19 12:54:32,952 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 12:54:32,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-19 12:54:32,953 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-19 12:54:32,953 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-09-19 12:54:32,953 INFO L87 Difference]: Start difference. First operand 6794 states and 7947 transitions. Second operand 10 states. [2018-09-19 12:54:51,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 12:54:51,964 INFO L93 Difference]: Finished difference Result 13654 states and 16856 transitions. [2018-09-19 12:54:51,969 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-09-19 12:54:51,969 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 278 [2018-09-19 12:54:51,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 12:54:52,016 INFO L225 Difference]: With dead ends: 13654 [2018-09-19 12:54:52,017 INFO L226 Difference]: Without dead ends: 9279 [2018-09-19 12:54:52,028 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 285 GetRequests, 269 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 12:54:52,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9279 states. [2018-09-19 12:54:52,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9279 to 9252. [2018-09-19 12:54:52,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9252 states. [2018-09-19 12:54:52,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9252 states to 9252 states and 10537 transitions. [2018-09-19 12:54:52,181 INFO L78 Accepts]: Start accepts. Automaton has 9252 states and 10537 transitions. Word has length 278 [2018-09-19 12:54:52,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 12:54:52,182 INFO L480 AbstractCegarLoop]: Abstraction has 9252 states and 10537 transitions. [2018-09-19 12:54:52,182 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-19 12:54:52,182 INFO L276 IsEmpty]: Start isEmpty. Operand 9252 states and 10537 transitions. [2018-09-19 12:54:52,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2018-09-19 12:54:52,188 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 12:54:52,189 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 12:54:52,189 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 12:54:52,189 INFO L82 PathProgramCache]: Analyzing trace with hash -2085007546, now seen corresponding path program 1 times [2018-09-19 12:54:52,189 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 12:54:52,190 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 321 with the following transitions: [2018-09-19 12:54:52,190 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], [2903], [2905], [2908], [2916], [2924], [2932], [2940], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [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 12:54:52,192 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-09-19 12:54:52,192 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 12:54:52,346 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-19 12:54:53,783 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 12:54:53,784 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 12:54:53,831 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 12:54:54,362 INFO L232 lantSequenceWeakener]: Weakened 317 states. On average, predicates are now at 71.15% of their original sizes. [2018-09-19 12:54:54,363 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 12:54:54,457 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 12:54:54,457 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 12:54:54,458 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-19 12:54:54,458 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 12:54:54,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-19 12:54:54,458 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-19 12:54:54,458 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-09-19 12:54:54,459 INFO L87 Difference]: Start difference. First operand 9252 states and 10537 transitions. Second operand 10 states. [2018-09-19 12:55:16,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 12:55:16,789 INFO L93 Difference]: Finished difference Result 15294 states and 18522 transitions. [2018-09-19 12:55:16,790 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-19 12:55:16,790 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 320 [2018-09-19 12:55:16,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 12:55:16,814 INFO L225 Difference]: With dead ends: 15294 [2018-09-19 12:55:16,814 INFO L226 Difference]: Without dead ends: 10085 [2018-09-19 12:55:16,825 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 326 GetRequests, 311 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 12:55:16,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10085 states. [2018-09-19 12:55:16,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10085 to 10061. [2018-09-19 12:55:16,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10061 states. [2018-09-19 12:55:16,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10061 states to 10061 states and 11413 transitions. [2018-09-19 12:55:16,977 INFO L78 Accepts]: Start accepts. Automaton has 10061 states and 11413 transitions. Word has length 320 [2018-09-19 12:55:16,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 12:55:16,978 INFO L480 AbstractCegarLoop]: Abstraction has 10061 states and 11413 transitions. [2018-09-19 12:55:16,978 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-19 12:55:16,978 INFO L276 IsEmpty]: Start isEmpty. Operand 10061 states and 11413 transitions. [2018-09-19 12:55:16,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2018-09-19 12:55:16,985 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 12:55:16,986 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 12:55:16,986 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 12:55:16,986 INFO L82 PathProgramCache]: Analyzing trace with hash -1726950310, now seen corresponding path program 1 times [2018-09-19 12:55:16,987 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 12:55:16,987 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 331 with the following transitions: [2018-09-19 12:55:16,987 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], [2903], [2905], [2908], [2916], [2924], [2932], [2940], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [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 12:55:16,990 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-09-19 12:55:16,990 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 12:55:17,143 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-19 12:55:17,714 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 12:55:17,714 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 12:55:17,728 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 12:55:18,104 INFO L232 lantSequenceWeakener]: Weakened 327 states. On average, predicates are now at 71.14% of their original sizes. [2018-09-19 12:55:18,105 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 12:55:18,214 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 12:55:18,214 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 12:55:18,214 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-19 12:55:18,214 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 12:55:18,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-19 12:55:18,215 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-19 12:55:18,215 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-09-19 12:55:18,216 INFO L87 Difference]: Start difference. First operand 10061 states and 11413 transitions. Second operand 10 states. [2018-09-19 12:55:39,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 12:55:39,512 INFO L93 Difference]: Finished difference Result 17756 states and 21202 transitions. [2018-09-19 12:55:39,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-09-19 12:55:39,514 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 330 [2018-09-19 12:55:39,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 12:55:39,545 INFO L225 Difference]: With dead ends: 17756 [2018-09-19 12:55:39,545 INFO L226 Difference]: Without dead ends: 11734 [2018-09-19 12:55:39,558 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 337 GetRequests, 321 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 12:55:39,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11734 states. [2018-09-19 12:55:39,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11734 to 11704. [2018-09-19 12:55:39,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11704 states. [2018-09-19 12:55:39,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11704 states to 11704 states and 13240 transitions. [2018-09-19 12:55:39,750 INFO L78 Accepts]: Start accepts. Automaton has 11704 states and 13240 transitions. Word has length 330 [2018-09-19 12:55:39,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 12:55:39,750 INFO L480 AbstractCegarLoop]: Abstraction has 11704 states and 13240 transitions. [2018-09-19 12:55:39,751 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-19 12:55:39,751 INFO L276 IsEmpty]: Start isEmpty. Operand 11704 states and 13240 transitions. [2018-09-19 12:55:39,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2018-09-19 12:55:39,759 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 12:55:39,759 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 12:55:39,759 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 12:55:39,760 INFO L82 PathProgramCache]: Analyzing trace with hash -2017329363, now seen corresponding path program 1 times [2018-09-19 12:55:39,760 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 12:55:39,760 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 346 with the following transitions: [2018-09-19 12:55:39,761 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], [2903], [2905], [2908], [2916], [2924], [2932], [2940], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [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 12:55:39,763 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-09-19 12:55:39,763 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 12:55:39,906 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-19 12:55:40,246 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 12:55:40,247 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 12:55:40,278 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 12:55:40,795 INFO L232 lantSequenceWeakener]: Weakened 342 states. On average, predicates are now at 71.19% of their original sizes. [2018-09-19 12:55:40,796 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 12:55:41,269 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 12:55:41,269 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 12:55:41,270 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-09-19 12:55:41,270 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 12:55:41,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-19 12:55:41,270 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-19 12:55:41,271 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2018-09-19 12:55:41,271 INFO L87 Difference]: Start difference. First operand 11704 states and 13240 transitions. Second operand 12 states. [2018-09-19 12:56:21,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 12:56:21,619 INFO L93 Difference]: Finished difference Result 22751 states and 29077 transitions. [2018-09-19 12:56:21,619 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-09-19 12:56:21,620 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 345 [2018-09-19 12:56:21,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 12:56:21,656 INFO L225 Difference]: With dead ends: 22751 [2018-09-19 12:56:21,656 INFO L226 Difference]: Without dead ends: 15901 [2018-09-19 12:56:21,672 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 370 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=220, Invalid=1186, Unknown=0, NotChecked=0, Total=1406 [2018-09-19 12:56:21,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15901 states. [2018-09-19 12:56:21,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15901 to 15812. [2018-09-19 12:56:21,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15812 states. [2018-09-19 12:56:21,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15812 states to 15812 states and 18058 transitions. [2018-09-19 12:56:21,904 INFO L78 Accepts]: Start accepts. Automaton has 15812 states and 18058 transitions. Word has length 345 [2018-09-19 12:56:21,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 12:56:21,905 INFO L480 AbstractCegarLoop]: Abstraction has 15812 states and 18058 transitions. [2018-09-19 12:56:21,905 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-09-19 12:56:21,905 INFO L276 IsEmpty]: Start isEmpty. Operand 15812 states and 18058 transitions. [2018-09-19 12:56:21,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2018-09-19 12:56:21,915 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 12:56:21,915 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 12:56:21,915 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 12:56:21,916 INFO L82 PathProgramCache]: Analyzing trace with hash 937453886, now seen corresponding path program 1 times [2018-09-19 12:56:21,916 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 12:56:21,916 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 349 with the following transitions: [2018-09-19 12:56:21,916 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], [2903], [2905], [2908], [2916], [2924], [2932], [2940], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [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 12:56:21,918 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-09-19 12:56:21,919 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 12:56:22,037 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-19 12:56:22,288 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 12:56:22,288 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 12:56:22,300 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 12:56:23,011 INFO L232 lantSequenceWeakener]: Weakened 345 states. On average, predicates are now at 71.13% of their original sizes. [2018-09-19 12:56:23,011 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 12:56:23,389 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 12:56:23,389 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 12:56:23,389 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-19 12:56:23,389 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 12:56:23,390 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-19 12:56:23,390 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-19 12:56:23,390 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-09-19 12:56:23,390 INFO L87 Difference]: Start difference. First operand 15812 states and 18058 transitions. Second operand 10 states. Received shutdown request... [2018-09-19 12:56:36,993 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-09-19 12:56:36,994 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-19 12:56:37,001 WARN L206 ceAbstractionStarter]: Timeout [2018-09-19 12:56:37,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.09 12:56:37 BoogieIcfgContainer [2018-09-19 12:56:37,001 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-19 12:56:37,002 INFO L168 Benchmark]: Toolchain (without parser) took 243209.63 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -658.4 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-09-19 12:56:37,004 INFO L168 Benchmark]: CDTParser took 0.19 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 12:56:37,004 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2829.18 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: 339.3 MB). Peak memory consumption was 339.3 MB. Max. memory is 7.1 GB. [2018-09-19 12:56:37,005 INFO L168 Benchmark]: Boogie Procedure Inliner took 320.68 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: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-09-19 12:56:37,006 INFO L168 Benchmark]: Boogie Preprocessor took 1234.97 ms. Allocated memory was 1.5 GB in the beginning and 2.6 GB in the end (delta: 1.0 GB). Free memory was 1.0 GB in the beginning and 2.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. [2018-09-19 12:56:37,007 INFO L168 Benchmark]: RCFGBuilder took 10581.75 ms. Allocated memory was 2.6 GB in the beginning and 2.7 GB in the end (delta: 157.3 MB). Free memory was 2.4 GB in the beginning and 2.4 GB in the end (delta: 1.6 MB). Peak memory consumption was 740.6 MB. Max. memory is 7.1 GB. [2018-09-19 12:56:37,008 INFO L168 Benchmark]: TraceAbstraction took 228236.32 ms. Allocated memory was 2.7 GB in the beginning and 4.1 GB in the end (delta: 1.4 GB). Free memory was 2.4 GB in the beginning and 2.1 GB in the end (delta: 279.4 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-09-19 12:56:37,016 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 2829.18 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: 339.3 MB). Peak memory consumption was 339.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 320.68 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: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1234.97 ms. Allocated memory was 1.5 GB in the beginning and 2.6 GB in the end (delta: 1.0 GB). Free memory was 1.0 GB in the beginning and 2.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10581.75 ms. Allocated memory was 2.6 GB in the beginning and 2.7 GB in the end (delta: 157.3 MB). Free memory was 2.4 GB in the beginning and 2.4 GB in the end (delta: 1.6 MB). Peak memory consumption was 740.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 228236.32 ms. Allocated memory was 2.7 GB in the beginning and 4.1 GB in the end (delta: 1.4 GB). Free memory was 2.4 GB in the beginning and 2.1 GB in the end (delta: 279.4 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 132]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 132). 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 (17941 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 228.1s OverallTime, 11 OverallIterations, 4 TraceHistogramMax, 211.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 13020 SDtfs, 30741 SDslu, 9750 SDs, 0 SdLazy, 127461 SolverSat, 9877 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 183.0s Time, PredicateUnifierStatistics: 22 DeclaredPredicates, 2841 GetRequests, 2662 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 678 ImplicationChecksByTransitivity, 4.4s 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, 6.9s AbstIntTime, 11 AbstIntIterations, 11 AbstIntStrong, 0.9973449992616517 AbsIntWeakeningRatio, 0.10698689956331878 AbsIntAvgWeakeningVarsNumRemoved, 23.357350800582243 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_label31_true-unreach-call.c_svcomp-Reach-64bit-ToothlessTaipan_INTCON-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-19_12-56-37-042.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem13_label31_true-unreach-call.c_svcomp-Reach-64bit-ToothlessTaipan_INTCON-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-19_12-56-37-042.csv Completed graceful shutdown