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_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label56_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-19 03:32:33,685 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-19 03:32:33,687 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-19 03:32:33,702 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-19 03:32:33,702 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-19 03:32:33,704 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-19 03:32:33,705 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-19 03:32:33,708 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-19 03:32:33,710 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-19 03:32:33,711 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-19 03:32:33,717 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-19 03:32:33,717 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-19 03:32:33,718 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-19 03:32:33,719 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-19 03:32:33,720 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-19 03:32:33,721 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-19 03:32:33,722 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-19 03:32:33,724 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-19 03:32:33,725 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-19 03:32:33,728 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-19 03:32:33,729 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-19 03:32:33,730 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-19 03:32:33,735 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-19 03:32:33,735 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-19 03:32:33,735 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-19 03:32:33,736 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-19 03:32:33,739 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-19 03:32:33,740 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-19 03:32:33,740 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-19 03:32:33,744 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-19 03:32:33,745 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-19 03:32:33,745 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-09-19 03:32:33,750 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_Default-OldIcfg.epf [2018-09-19 03:32:33,778 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-19 03:32:33,778 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-19 03:32:33,779 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-19 03:32:33,780 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-19 03:32:33,780 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-19 03:32:33,780 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-19 03:32:33,781 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-19 03:32:33,781 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-19 03:32:33,781 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-19 03:32:33,781 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-19 03:32:33,781 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-19 03:32:33,782 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-19 03:32:33,783 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-19 03:32:33,783 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-19 03:32:33,783 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-19 03:32:33,783 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-19 03:32:33,783 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-19 03:32:33,784 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-19 03:32:33,784 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-19 03:32:33,784 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-19 03:32:33,784 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-19 03:32:33,784 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-19 03:32:33,785 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-19 03:32:33,785 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-19 03:32:33,785 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-19 03:32:33,785 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-19 03:32:33,786 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-19 03:32:33,786 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-19 03:32:33,786 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-19 03:32:33,786 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-19 03:32:33,786 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-19 03:32:33,787 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-19 03:32:33,787 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-19 03:32:33,787 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-19 03:32:33,843 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-19 03:32:33,860 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-19 03:32:33,866 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-19 03:32:33,868 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-19 03:32:33,868 INFO L276 PluginConnector]: CDTParser initialized [2018-09-19 03:32:33,869 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label56_true-unreach-call.c [2018-09-19 03:32:34,220 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c89f2891/3ed3f5895d1d4028893b549b968d6adb/FLAG2d2cf62bd [2018-09-19 03:32:34,495 INFO L277 CDTParser]: Found 1 translation units. [2018-09-19 03:32:34,496 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label56_true-unreach-call.c [2018-09-19 03:32:34,516 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c89f2891/3ed3f5895d1d4028893b549b968d6adb/FLAG2d2cf62bd [2018-09-19 03:32:34,539 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c89f2891/3ed3f5895d1d4028893b549b968d6adb [2018-09-19 03:32:34,551 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-19 03:32:34,555 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-19 03:32:34,556 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-19 03:32:34,557 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-19 03:32:34,564 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-19 03:32:34,565 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 03:32:34" (1/1) ... [2018-09-19 03:32:34,568 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64024991 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:32:34, skipping insertion in model container [2018-09-19 03:32:34,568 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 03:32:34" (1/1) ... [2018-09-19 03:32:34,580 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-19 03:32:35,070 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 03:32:35,087 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-19 03:32:35,228 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 03:32:35,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:32:35 WrapperNode [2018-09-19 03:32:35,289 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-19 03:32:35,289 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-19 03:32:35,290 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-19 03:32:35,290 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-19 03:32:35,300 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:32:35" (1/1) ... [2018-09-19 03:32:35,334 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:32:35" (1/1) ... [2018-09-19 03:32:35,421 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-19 03:32:35,422 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-19 03:32:35,422 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-19 03:32:35,422 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-19 03:32:35,586 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:32:35" (1/1) ... [2018-09-19 03:32:35,587 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:32:35" (1/1) ... [2018-09-19 03:32:35,591 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:32:35" (1/1) ... [2018-09-19 03:32:35,591 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:32:35" (1/1) ... [2018-09-19 03:32:35,637 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:32:35" (1/1) ... [2018-09-19 03:32:35,652 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:32:35" (1/1) ... [2018-09-19 03:32:35,663 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:32:35" (1/1) ... [2018-09-19 03:32:35,675 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-19 03:32:35,676 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-19 03:32:35,676 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-19 03:32:35,676 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-19 03:32:35,677 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:32:35" (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 03:32:35,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-19 03:32:35,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-19 03:32:35,745 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-19 03:32:35,745 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-19 03:32:35,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-19 03:32:35,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-19 03:32:35,747 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-19 03:32:35,747 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-19 03:32:38,733 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-19 03:32:38,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 03:32:38 BoogieIcfgContainer [2018-09-19 03:32:38,734 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-19 03:32:38,735 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-19 03:32:38,736 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-19 03:32:38,739 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-19 03:32:38,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.09 03:32:34" (1/3) ... [2018-09-19 03:32:38,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f6becd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 03:32:38, skipping insertion in model container [2018-09-19 03:32:38,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:32:35" (2/3) ... [2018-09-19 03:32:38,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f6becd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 03:32:38, skipping insertion in model container [2018-09-19 03:32:38,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 03:32:38" (3/3) ... [2018-09-19 03:32:38,744 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label56_true-unreach-call.c [2018-09-19 03:32:38,754 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-19 03:32:38,765 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-19 03:32:38,819 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-19 03:32:38,820 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-19 03:32:38,820 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-19 03:32:38,820 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-19 03:32:38,821 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-19 03:32:38,821 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-19 03:32:38,821 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-19 03:32:38,821 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-19 03:32:38,821 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-19 03:32:38,848 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2018-09-19 03:32:38,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-09-19 03:32:38,857 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 03:32:38,858 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] [2018-09-19 03:32:38,859 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 03:32:38,863 INFO L82 PathProgramCache]: Analyzing trace with hash 1189398212, now seen corresponding path program 1 times [2018-09-19 03:32:38,865 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 03:32:38,866 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 31 with the following transitions: [2018-09-19 03:32:38,869 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [141], [143], [796], [800], [806], [810], [817], [818], [819], [821] [2018-09-19 03:32:38,928 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-09-19 03:32:38,928 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 03:32:39,948 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 03:32:39,950 INFO L272 AbstractInterpreter]: Visited 29 different actions 29 times. Never merged. Never widened. Never found a fixpoint. Largest state had 23 variables. [2018-09-19 03:32:39,965 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 03:32:40,476 INFO L232 lantSequenceWeakener]: Weakened 28 states. On average, predicates are now at 74.47% of their original sizes. [2018-09-19 03:32:40,476 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 03:32:40,802 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 03:32:40,804 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 03:32:40,804 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-19 03:32:40,804 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 03:32:40,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-19 03:32:40,820 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-19 03:32:40,821 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-19 03:32:40,823 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 6 states. [2018-09-19 03:32:45,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 03:32:45,744 INFO L93 Difference]: Finished difference Result 576 states and 995 transitions. [2018-09-19 03:32:45,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-19 03:32:45,746 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2018-09-19 03:32:45,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 03:32:45,761 INFO L225 Difference]: With dead ends: 576 [2018-09-19 03:32:45,762 INFO L226 Difference]: Without dead ends: 358 [2018-09-19 03:32:45,769 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-19 03:32:45,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2018-09-19 03:32:45,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 356. [2018-09-19 03:32:45,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2018-09-19 03:32:45,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 497 transitions. [2018-09-19 03:32:45,854 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 497 transitions. Word has length 30 [2018-09-19 03:32:45,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 03:32:45,855 INFO L480 AbstractCegarLoop]: Abstraction has 356 states and 497 transitions. [2018-09-19 03:32:45,855 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-19 03:32:45,855 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 497 transitions. [2018-09-19 03:32:45,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-09-19 03:32:45,862 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 03:32:45,863 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:32:45,863 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 03:32:45,867 INFO L82 PathProgramCache]: Analyzing trace with hash 160243507, now seen corresponding path program 1 times [2018-09-19 03:32:45,867 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 03:32:45,868 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 102 with the following transitions: [2018-09-19 03:32:45,868 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [141], [143], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [498], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-09-19 03:32:45,882 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-09-19 03:32:45,882 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 03:32:47,363 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-19 03:32:50,421 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 03:32:50,421 INFO L272 AbstractInterpreter]: Visited 78 different actions 221 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-09-19 03:32:50,438 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 03:32:51,401 INFO L232 lantSequenceWeakener]: Weakened 99 states. On average, predicates are now at 73.31% of their original sizes. [2018-09-19 03:32:51,402 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 03:32:52,009 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 03:32:52,010 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 03:32:52,010 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-19 03:32:52,010 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 03:32:52,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-19 03:32:52,011 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-19 03:32:52,012 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-09-19 03:32:52,012 INFO L87 Difference]: Start difference. First operand 356 states and 497 transitions. Second operand 10 states. [2018-09-19 03:32:57,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 03:32:57,201 INFO L93 Difference]: Finished difference Result 717 states and 1132 transitions. [2018-09-19 03:32:57,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-19 03:32:57,206 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 101 [2018-09-19 03:32:57,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 03:32:57,211 INFO L225 Difference]: With dead ends: 717 [2018-09-19 03:32:57,211 INFO L226 Difference]: Without dead ends: 511 [2018-09-19 03:32:57,215 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 107 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2018-09-19 03:32:57,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2018-09-19 03:32:57,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 505. [2018-09-19 03:32:57,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 505 states. [2018-09-19 03:32:57,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 659 transitions. [2018-09-19 03:32:57,255 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 659 transitions. Word has length 101 [2018-09-19 03:32:57,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 03:32:57,256 INFO L480 AbstractCegarLoop]: Abstraction has 505 states and 659 transitions. [2018-09-19 03:32:57,256 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-19 03:32:57,256 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 659 transitions. [2018-09-19 03:32:57,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-09-19 03:32:57,259 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 03:32:57,259 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:32:57,260 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 03:32:57,260 INFO L82 PathProgramCache]: Analyzing trace with hash -1268619912, now seen corresponding path program 1 times [2018-09-19 03:32:57,260 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 03:32:57,261 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 111 with the following transitions: [2018-09-19 03:32:57,261 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [141], [143], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [534], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-09-19 03:32:57,266 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-09-19 03:32:57,266 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 03:33:02,043 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-19 03:33:03,892 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 03:33:03,892 INFO L272 AbstractInterpreter]: Visited 87 different actions 248 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-09-19 03:33:03,896 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 03:33:04,782 INFO L232 lantSequenceWeakener]: Weakened 108 states. On average, predicates are now at 73.26% of their original sizes. [2018-09-19 03:33:04,782 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 03:33:05,696 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 03:33:05,696 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 03:33:05,697 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2018-09-19 03:33:05,697 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 03:33:05,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-19 03:33:05,698 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-19 03:33:05,698 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2018-09-19 03:33:05,698 INFO L87 Difference]: Start difference. First operand 505 states and 659 transitions. Second operand 13 states. [2018-09-19 03:33:16,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 03:33:16,794 INFO L93 Difference]: Finished difference Result 1333 states and 2076 transitions. [2018-09-19 03:33:16,794 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-09-19 03:33:16,795 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 110 [2018-09-19 03:33:16,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 03:33:16,801 INFO L225 Difference]: With dead ends: 1333 [2018-09-19 03:33:16,802 INFO L226 Difference]: Without dead ends: 978 [2018-09-19 03:33:16,804 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 124 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=164, Invalid=592, Unknown=0, NotChecked=0, Total=756 [2018-09-19 03:33:16,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 978 states. [2018-09-19 03:33:16,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 978 to 762. [2018-09-19 03:33:16,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 762 states. [2018-09-19 03:33:16,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 943 transitions. [2018-09-19 03:33:16,847 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 943 transitions. Word has length 110 [2018-09-19 03:33:16,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 03:33:16,848 INFO L480 AbstractCegarLoop]: Abstraction has 762 states and 943 transitions. [2018-09-19 03:33:16,848 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-19 03:33:16,848 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 943 transitions. [2018-09-19 03:33:16,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-09-19 03:33:16,853 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 03:33:16,853 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:33:16,853 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 03:33:16,854 INFO L82 PathProgramCache]: Analyzing trace with hash 862588912, now seen corresponding path program 1 times [2018-09-19 03:33:16,854 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 03:33:16,854 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 147 with the following transitions: [2018-09-19 03:33:16,854 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [141], [143], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [678], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-09-19 03:33:16,860 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-09-19 03:33:16,860 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 03:33:19,872 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-19 03:33:26,445 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 03:33:26,446 INFO L272 AbstractInterpreter]: Visited 123 different actions 356 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-09-19 03:33:26,453 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 03:33:27,394 INFO L232 lantSequenceWeakener]: Weakened 144 states. On average, predicates are now at 73.13% of their original sizes. [2018-09-19 03:33:27,394 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 03:33:27,815 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 03:33:27,815 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 03:33:27,815 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-09-19 03:33:27,815 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 03:33:27,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-19 03:33:27,816 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-19 03:33:27,816 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2018-09-19 03:33:27,817 INFO L87 Difference]: Start difference. First operand 762 states and 943 transitions. Second operand 12 states. [2018-09-19 03:33:33,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 03:33:33,366 INFO L93 Difference]: Finished difference Result 1677 states and 2200 transitions. [2018-09-19 03:33:33,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-09-19 03:33:33,367 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 146 [2018-09-19 03:33:33,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 03:33:33,374 INFO L225 Difference]: With dead ends: 1677 [2018-09-19 03:33:33,374 INFO L226 Difference]: Without dead ends: 1067 [2018-09-19 03:33:33,379 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 154 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2018-09-19 03:33:33,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1067 states. [2018-09-19 03:33:33,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1067 to 1056. [2018-09-19 03:33:33,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1056 states. [2018-09-19 03:33:33,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1056 states to 1056 states and 1277 transitions. [2018-09-19 03:33:33,418 INFO L78 Accepts]: Start accepts. Automaton has 1056 states and 1277 transitions. Word has length 146 [2018-09-19 03:33:33,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 03:33:33,419 INFO L480 AbstractCegarLoop]: Abstraction has 1056 states and 1277 transitions. [2018-09-19 03:33:33,419 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-09-19 03:33:33,419 INFO L276 IsEmpty]: Start isEmpty. Operand 1056 states and 1277 transitions. [2018-09-19 03:33:33,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2018-09-19 03:33:33,423 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 03:33:33,424 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:33:33,424 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 03:33:33,424 INFO L82 PathProgramCache]: Analyzing trace with hash -1128815949, now seen corresponding path program 1 times [2018-09-19 03:33:33,424 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 03:33:33,425 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 166 with the following transitions: [2018-09-19 03:33:33,425 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [141], [143], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [754], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-09-19 03:33:33,430 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-09-19 03:33:33,431 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 03:33:42,904 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 03:33:42,904 INFO L272 AbstractInterpreter]: Visited 142 different actions 413 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-09-19 03:33:42,915 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 03:33:43,901 INFO L232 lantSequenceWeakener]: Weakened 163 states. On average, predicates are now at 73.08% of their original sizes. [2018-09-19 03:33:43,901 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 03:33:44,299 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 03:33:44,299 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 03:33:44,299 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-09-19 03:33:44,299 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 03:33:44,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-19 03:33:44,300 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-19 03:33:44,300 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2018-09-19 03:33:44,300 INFO L87 Difference]: Start difference. First operand 1056 states and 1277 transitions. Second operand 12 states. [2018-09-19 03:33:51,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 03:33:51,633 INFO L93 Difference]: Finished difference Result 2268 states and 2879 transitions. [2018-09-19 03:33:51,639 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-09-19 03:33:51,640 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 165 [2018-09-19 03:33:51,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 03:33:51,647 INFO L225 Difference]: With dead ends: 2268 [2018-09-19 03:33:51,647 INFO L226 Difference]: Without dead ends: 1364 [2018-09-19 03:33:51,651 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 174 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=111, Invalid=351, Unknown=0, NotChecked=0, Total=462 [2018-09-19 03:33:51,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1364 states. [2018-09-19 03:33:51,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1364 to 1352. [2018-09-19 03:33:51,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1352 states. [2018-09-19 03:33:51,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 1605 transitions. [2018-09-19 03:33:51,703 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 1605 transitions. Word has length 165 [2018-09-19 03:33:51,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 03:33:51,704 INFO L480 AbstractCegarLoop]: Abstraction has 1352 states and 1605 transitions. [2018-09-19 03:33:51,704 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-09-19 03:33:51,704 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 1605 transitions. [2018-09-19 03:33:51,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-09-19 03:33:51,710 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 03:33:51,710 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 03:33:51,711 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 03:33:51,711 INFO L82 PathProgramCache]: Analyzing trace with hash 713847471, now seen corresponding path program 1 times [2018-09-19 03:33:51,711 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 03:33:51,711 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 178 with the following transitions: [2018-09-19 03:33:51,712 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [141], [143], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [498], [499], [503], [507], [511], [515], [518], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-09-19 03:33:51,722 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-09-19 03:33:51,722 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 03:33:53,176 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-19 03:33:58,141 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 03:33:58,141 INFO L272 AbstractInterpreter]: Visited 84 different actions 323 times. Merged at 7 different actions 20 times. Never widened. Found 4 fixpoints after 1 different actions. Largest state had 24 variables. [2018-09-19 03:33:58,147 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 03:33:59,254 INFO L232 lantSequenceWeakener]: Weakened 175 states. On average, predicates are now at 73.11% of their original sizes. [2018-09-19 03:33:59,254 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 03:33:59,568 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 03:33:59,569 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 03:33:59,569 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-19 03:33:59,569 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 03:33:59,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-19 03:33:59,570 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-19 03:33:59,570 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-09-19 03:33:59,570 INFO L87 Difference]: Start difference. First operand 1352 states and 1605 transitions. Second operand 10 states. [2018-09-19 03:34:06,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 03:34:06,605 INFO L93 Difference]: Finished difference Result 2719 states and 3368 transitions. [2018-09-19 03:34:06,606 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-09-19 03:34:06,606 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 177 [2018-09-19 03:34:06,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 03:34:06,618 INFO L225 Difference]: With dead ends: 2719 [2018-09-19 03:34:06,618 INFO L226 Difference]: Without dead ends: 1521 [2018-09-19 03:34:06,622 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 184 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2018-09-19 03:34:06,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1521 states. [2018-09-19 03:34:06,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1521 to 1503. [2018-09-19 03:34:06,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1503 states. [2018-09-19 03:34:06,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1503 states to 1503 states and 1772 transitions. [2018-09-19 03:34:06,696 INFO L78 Accepts]: Start accepts. Automaton has 1503 states and 1772 transitions. Word has length 177 [2018-09-19 03:34:06,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 03:34:06,697 INFO L480 AbstractCegarLoop]: Abstraction has 1503 states and 1772 transitions. [2018-09-19 03:34:06,697 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-19 03:34:06,698 INFO L276 IsEmpty]: Start isEmpty. Operand 1503 states and 1772 transitions. [2018-09-19 03:34:06,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-09-19 03:34:06,701 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 03:34:06,701 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 03:34:06,702 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 03:34:06,702 INFO L82 PathProgramCache]: Analyzing trace with hash -833656112, now seen corresponding path program 1 times [2018-09-19 03:34:06,702 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 03:34:06,702 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 189 with the following transitions: [2018-09-19 03:34:06,703 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [141], [143], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [526], [527], [531], [534], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-09-19 03:34:06,705 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-09-19 03:34:06,706 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 03:34:09,881 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-19 03:34:13,728 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 03:34:13,728 INFO L272 AbstractInterpreter]: Visited 88 different actions 341 times. Merged at 7 different actions 22 times. Never widened. Found 4 fixpoints after 2 different actions. Largest state had 24 variables. [2018-09-19 03:34:13,733 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 03:34:14,733 INFO L232 lantSequenceWeakener]: Weakened 186 states. On average, predicates are now at 73.09% of their original sizes. [2018-09-19 03:34:14,734 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 03:34:15,201 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 03:34:15,201 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 03:34:15,202 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2018-09-19 03:34:15,202 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 03:34:15,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-19 03:34:15,203 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-19 03:34:15,203 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2018-09-19 03:34:15,203 INFO L87 Difference]: Start difference. First operand 1503 states and 1772 transitions. Second operand 13 states. [2018-09-19 03:34:21,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 03:34:21,768 INFO L93 Difference]: Finished difference Result 3686 states and 4637 transitions. [2018-09-19 03:34:21,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-09-19 03:34:21,770 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 188 [2018-09-19 03:34:21,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 03:34:21,782 INFO L225 Difference]: With dead ends: 3686 [2018-09-19 03:34:21,782 INFO L226 Difference]: Without dead ends: 2337 [2018-09-19 03:34:21,787 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 200 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=148, Invalid=502, Unknown=0, NotChecked=0, Total=650 [2018-09-19 03:34:21,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2337 states. [2018-09-19 03:34:21,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2337 to 2189. [2018-09-19 03:34:21,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2189 states. [2018-09-19 03:34:21,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2189 states to 2189 states and 2615 transitions. [2018-09-19 03:34:21,872 INFO L78 Accepts]: Start accepts. Automaton has 2189 states and 2615 transitions. Word has length 188 [2018-09-19 03:34:21,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 03:34:21,872 INFO L480 AbstractCegarLoop]: Abstraction has 2189 states and 2615 transitions. [2018-09-19 03:34:21,872 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-19 03:34:21,873 INFO L276 IsEmpty]: Start isEmpty. Operand 2189 states and 2615 transitions. [2018-09-19 03:34:21,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-09-19 03:34:21,877 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 03:34:21,877 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-19 03:34:21,877 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 03:34:21,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1669427612, now seen corresponding path program 1 times [2018-09-19 03:34:21,878 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 03:34:21,878 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 199 with the following transitions: [2018-09-19 03:34:21,878 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [141], [143], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [534], [535], [539], [543], [547], [551], [555], [559], [563], [566], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-09-19 03:34:21,886 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-09-19 03:34:21,886 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 03:34:25,367 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-19 03:34:39,029 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 03:34:39,030 INFO L272 AbstractInterpreter]: Visited 96 different actions 555 times. Merged at 7 different actions 34 times. Widened at 1 different actions 1 times. Found 6 fixpoints after 1 different actions. Largest state had 24 variables. [2018-09-19 03:34:39,036 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 03:34:40,294 INFO L232 lantSequenceWeakener]: Weakened 196 states. On average, predicates are now at 73.07% of their original sizes. [2018-09-19 03:34:40,295 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 03:34:40,774 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 03:34:40,774 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 03:34:40,774 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2018-09-19 03:34:40,775 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 03:34:40,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-19 03:34:40,776 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-19 03:34:40,776 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2018-09-19 03:34:40,776 INFO L87 Difference]: Start difference. First operand 2189 states and 2615 transitions. Second operand 13 states. [2018-09-19 03:34:51,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 03:34:51,882 INFO L93 Difference]: Finished difference Result 5360 states and 6747 transitions. [2018-09-19 03:34:51,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-09-19 03:34:51,885 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 198 [2018-09-19 03:34:51,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 03:34:51,899 INFO L225 Difference]: With dead ends: 5360 [2018-09-19 03:34:51,899 INFO L226 Difference]: Without dead ends: 3325 [2018-09-19 03:34:51,906 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 210 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=148, Invalid=502, Unknown=0, NotChecked=0, Total=650 [2018-09-19 03:34:51,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3325 states. [2018-09-19 03:34:51,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3325 to 3019. [2018-09-19 03:34:51,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3019 states. [2018-09-19 03:34:52,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3019 states to 3019 states and 3715 transitions. [2018-09-19 03:34:52,006 INFO L78 Accepts]: Start accepts. Automaton has 3019 states and 3715 transitions. Word has length 198 [2018-09-19 03:34:52,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 03:34:52,006 INFO L480 AbstractCegarLoop]: Abstraction has 3019 states and 3715 transitions. [2018-09-19 03:34:52,007 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-19 03:34:52,007 INFO L276 IsEmpty]: Start isEmpty. Operand 3019 states and 3715 transitions. [2018-09-19 03:34:52,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-09-19 03:34:52,011 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 03:34:52,011 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-19 03:34:52,011 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 03:34:52,012 INFO L82 PathProgramCache]: Analyzing trace with hash 171372784, now seen corresponding path program 1 times [2018-09-19 03:34:52,012 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 03:34:52,012 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 215 with the following transitions: [2018-09-19 03:34:52,013 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [141], [143], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [498], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [666], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-09-19 03:34:52,016 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-09-19 03:34:52,016 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 03:34:53,317 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-19 03:35:03,118 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 03:35:03,118 INFO L272 AbstractInterpreter]: Visited 121 different actions 471 times. Merged at 7 different actions 20 times. Never widened. Found 4 fixpoints after 1 different actions. Largest state had 24 variables. [2018-09-19 03:35:03,130 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 03:35:04,246 INFO L232 lantSequenceWeakener]: Weakened 212 states. On average, predicates are now at 73.04% of their original sizes. [2018-09-19 03:35:04,247 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 03:35:04,731 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 03:35:04,731 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 03:35:04,732 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2018-09-19 03:35:04,732 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 03:35:04,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-19 03:35:04,732 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-19 03:35:04,733 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2018-09-19 03:35:04,733 INFO L87 Difference]: Start difference. First operand 3019 states and 3715 transitions. Second operand 13 states. [2018-09-19 03:35:11,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 03:35:11,925 INFO L93 Difference]: Finished difference Result 6300 states and 8063 transitions. [2018-09-19 03:35:11,926 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-09-19 03:35:11,926 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 214 [2018-09-19 03:35:11,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 03:35:11,940 INFO L225 Difference]: With dead ends: 6300 [2018-09-19 03:35:11,940 INFO L226 Difference]: Without dead ends: 3435 [2018-09-19 03:35:11,948 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 226 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=148, Invalid=502, Unknown=0, NotChecked=0, Total=650 [2018-09-19 03:35:11,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3435 states. [2018-09-19 03:35:12,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3435 to 3305. [2018-09-19 03:35:12,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3305 states. [2018-09-19 03:35:12,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3305 states to 3305 states and 4062 transitions. [2018-09-19 03:35:12,059 INFO L78 Accepts]: Start accepts. Automaton has 3305 states and 4062 transitions. Word has length 214 [2018-09-19 03:35:12,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 03:35:12,060 INFO L480 AbstractCegarLoop]: Abstraction has 3305 states and 4062 transitions. [2018-09-19 03:35:12,060 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-19 03:35:12,060 INFO L276 IsEmpty]: Start isEmpty. Operand 3305 states and 4062 transitions. [2018-09-19 03:35:12,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-09-19 03:35:12,068 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 03:35:12,068 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 03:35:12,068 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 03:35:12,068 INFO L82 PathProgramCache]: Analyzing trace with hash 584875939, now seen corresponding path program 1 times [2018-09-19 03:35:12,069 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 03:35:12,069 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 220 with the following transitions: [2018-09-19 03:35:12,069 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [141], [143], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [506], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [678], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-09-19 03:35:12,072 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-09-19 03:35:12,073 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 03:35:14,838 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-19 03:35:26,426 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 03:35:26,427 INFO L272 AbstractInterpreter]: Visited 124 different actions 603 times. Merged at 7 different actions 27 times. Never widened. Found 5 fixpoints after 1 different actions. Largest state had 24 variables. [2018-09-19 03:35:26,434 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 03:35:27,587 INFO L232 lantSequenceWeakener]: Weakened 217 states. On average, predicates are now at 73.04% of their original sizes. [2018-09-19 03:35:27,588 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 03:35:27,886 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 03:35:27,886 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 03:35:27,886 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-19 03:35:27,886 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 03:35:27,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-19 03:35:27,887 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-19 03:35:27,887 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-09-19 03:35:27,887 INFO L87 Difference]: Start difference. First operand 3305 states and 4062 transitions. Second operand 10 states. [2018-09-19 03:35:33,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 03:35:33,473 INFO L93 Difference]: Finished difference Result 6634 states and 8307 transitions. [2018-09-19 03:35:33,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-09-19 03:35:33,474 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 219 [2018-09-19 03:35:33,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 03:35:33,487 INFO L225 Difference]: With dead ends: 6634 [2018-09-19 03:35:33,487 INFO L226 Difference]: Without dead ends: 3483 [2018-09-19 03:35:33,494 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 226 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2018-09-19 03:35:33,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3483 states. [2018-09-19 03:35:33,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3483 to 3457. [2018-09-19 03:35:33,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3457 states. [2018-09-19 03:35:33,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3457 states to 3457 states and 4260 transitions. [2018-09-19 03:35:33,605 INFO L78 Accepts]: Start accepts. Automaton has 3457 states and 4260 transitions. Word has length 219 [2018-09-19 03:35:33,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 03:35:33,606 INFO L480 AbstractCegarLoop]: Abstraction has 3457 states and 4260 transitions. [2018-09-19 03:35:33,606 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-19 03:35:33,606 INFO L276 IsEmpty]: Start isEmpty. Operand 3457 states and 4260 transitions. [2018-09-19 03:35:33,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-09-19 03:35:33,611 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 03:35:33,611 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-19 03:35:33,611 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 03:35:33,612 INFO L82 PathProgramCache]: Analyzing trace with hash -1141325680, now seen corresponding path program 1 times [2018-09-19 03:35:33,612 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 03:35:33,612 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 221 with the following transitions: [2018-09-19 03:35:33,612 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [141], [143], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [534], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-09-19 03:35:33,615 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-09-19 03:35:33,615 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 03:35:37,688 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-19 03:35:49,827 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 03:35:49,827 INFO L272 AbstractInterpreter]: Visited 118 different actions 687 times. Merged at 7 different actions 34 times. Widened at 1 different actions 1 times. Found 6 fixpoints after 1 different actions. Largest state had 24 variables. [2018-09-19 03:35:49,834 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 03:35:51,342 INFO L232 lantSequenceWeakener]: Weakened 218 states. On average, predicates are now at 73.04% of their original sizes. [2018-09-19 03:35:51,342 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 03:35:51,979 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 03:35:51,980 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 03:35:51,980 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2018-09-19 03:35:51,980 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 03:35:51,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-19 03:35:51,981 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-19 03:35:51,981 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2018-09-19 03:35:51,982 INFO L87 Difference]: Start difference. First operand 3457 states and 4260 transitions. Second operand 13 states. [2018-09-19 03:35:59,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 03:35:59,618 INFO L93 Difference]: Finished difference Result 8601 states and 11011 transitions. [2018-09-19 03:35:59,619 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-09-19 03:35:59,619 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 220 [2018-09-19 03:35:59,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 03:35:59,638 INFO L225 Difference]: With dead ends: 8601 [2018-09-19 03:35:59,638 INFO L226 Difference]: Without dead ends: 5298 [2018-09-19 03:35:59,647 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 232 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=148, Invalid=502, Unknown=0, NotChecked=0, Total=650 [2018-09-19 03:35:59,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5298 states. [2018-09-19 03:35:59,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5298 to 4845. [2018-09-19 03:35:59,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4845 states. [2018-09-19 03:35:59,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4845 states to 4845 states and 6065 transitions. [2018-09-19 03:35:59,788 INFO L78 Accepts]: Start accepts. Automaton has 4845 states and 6065 transitions. Word has length 220 [2018-09-19 03:35:59,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 03:35:59,789 INFO L480 AbstractCegarLoop]: Abstraction has 4845 states and 6065 transitions. [2018-09-19 03:35:59,789 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-19 03:35:59,789 INFO L276 IsEmpty]: Start isEmpty. Operand 4845 states and 6065 transitions. [2018-09-19 03:35:59,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-09-19 03:35:59,795 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 03:35:59,795 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-19 03:35:59,795 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 03:35:59,795 INFO L82 PathProgramCache]: Analyzing trace with hash 2117157376, now seen corresponding path program 1 times [2018-09-19 03:35:59,796 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 03:35:59,796 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 229 with the following transitions: [2018-09-19 03:35:59,796 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [141], [143], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [542], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [678], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-09-19 03:35:59,799 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-09-19 03:35:59,799 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 03:36:02,410 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-19 03:36:17,721 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 03:36:17,722 INFO L272 AbstractInterpreter]: Visited 124 different actions 723 times. Merged at 7 different actions 34 times. Widened at 1 different actions 1 times. Found 6 fixpoints after 1 different actions. Largest state had 24 variables. [2018-09-19 03:36:17,728 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 03:36:18,920 INFO L232 lantSequenceWeakener]: Weakened 226 states. On average, predicates are now at 73.02% of their original sizes. [2018-09-19 03:36:18,920 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 03:36:19,254 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 03:36:19,254 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 03:36:19,255 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-09-19 03:36:19,255 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 03:36:19,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-19 03:36:19,256 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-19 03:36:19,256 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-09-19 03:36:19,256 INFO L87 Difference]: Start difference. First operand 4845 states and 6065 transitions. Second operand 11 states. [2018-09-19 03:36:27,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 03:36:27,094 INFO L93 Difference]: Finished difference Result 9755 states and 12399 transitions. [2018-09-19 03:36:27,095 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-09-19 03:36:27,095 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 228 [2018-09-19 03:36:27,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 03:36:27,113 INFO L225 Difference]: With dead ends: 9755 [2018-09-19 03:36:27,114 INFO L226 Difference]: Without dead ends: 5064 [2018-09-19 03:36:27,123 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 236 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2018-09-19 03:36:27,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5064 states. [2018-09-19 03:36:27,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5064 to 5004. [2018-09-19 03:36:27,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5004 states. [2018-09-19 03:36:27,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5004 states to 5004 states and 6279 transitions. [2018-09-19 03:36:27,268 INFO L78 Accepts]: Start accepts. Automaton has 5004 states and 6279 transitions. Word has length 228 [2018-09-19 03:36:27,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 03:36:27,269 INFO L480 AbstractCegarLoop]: Abstraction has 5004 states and 6279 transitions. [2018-09-19 03:36:27,269 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-19 03:36:27,269 INFO L276 IsEmpty]: Start isEmpty. Operand 5004 states and 6279 transitions. [2018-09-19 03:36:27,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2018-09-19 03:36:27,277 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 03:36:27,277 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-19 03:36:27,278 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 03:36:27,278 INFO L82 PathProgramCache]: Analyzing trace with hash 1012514375, now seen corresponding path program 1 times [2018-09-19 03:36:27,278 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 03:36:27,278 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 250 with the following transitions: [2018-09-19 03:36:27,279 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [141], [143], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [626], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [678], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-09-19 03:36:27,282 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-09-19 03:36:27,283 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 03:36:30,202 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-19 03:36:45,514 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 03:36:45,515 INFO L272 AbstractInterpreter]: Visited 124 different actions 723 times. Merged at 7 different actions 34 times. Widened at 1 different actions 1 times. Found 6 fixpoints after 1 different actions. Largest state had 24 variables. [2018-09-19 03:36:45,523 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 03:36:46,839 INFO L232 lantSequenceWeakener]: Weakened 247 states. On average, predicates are now at 73% of their original sizes. [2018-09-19 03:36:46,839 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 03:36:47,140 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 03:36:47,140 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 03:36:47,141 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-19 03:36:47,141 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 03:36:47,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-19 03:36:47,142 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-19 03:36:47,143 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-09-19 03:36:47,143 INFO L87 Difference]: Start difference. First operand 5004 states and 6279 transitions. Second operand 10 states. Received shutdown request... [2018-09-19 03:36:52,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-09-19 03:36:52,044 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-19 03:36:52,051 WARN L206 ceAbstractionStarter]: Timeout [2018-09-19 03:36:52,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.09 03:36:52 BoogieIcfgContainer [2018-09-19 03:36:52,051 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-19 03:36:52,052 INFO L168 Benchmark]: Toolchain (without parser) took 257500.19 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 3.7 GB in the end (delta: -2.3 GB). Peak memory consumption was 381.4 MB. Max. memory is 7.1 GB. [2018-09-19 03:36:52,054 INFO L168 Benchmark]: CDTParser took 0.21 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 03:36:52,054 INFO L168 Benchmark]: CACSL2BoogieTranslator took 732.47 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-09-19 03:36:52,055 INFO L168 Benchmark]: Boogie Procedure Inliner took 131.90 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-09-19 03:36:52,056 INFO L168 Benchmark]: Boogie Preprocessor took 253.84 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 768.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -861.0 MB). Peak memory consumption was 29.1 MB. Max. memory is 7.1 GB. [2018-09-19 03:36:52,057 INFO L168 Benchmark]: RCFGBuilder took 3058.57 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 110.2 MB). Peak memory consumption was 110.2 MB. Max. memory is 7.1 GB. [2018-09-19 03:36:52,058 INFO L168 Benchmark]: TraceAbstraction took 253316.16 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 3.7 GB in the end (delta: -1.6 GB). Peak memory consumption was 310.7 MB. Max. memory is 7.1 GB. [2018-09-19 03:36:52,062 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 732.47 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 131.90 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 253.84 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 768.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -861.0 MB). Peak memory consumption was 29.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3058.57 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 110.2 MB). Peak memory consumption was 110.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 253316.16 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 3.7 GB in the end (delta: -1.6 GB). Peak memory consumption was 310.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 73]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 73). Cancelled while BasicCegarLoop was constructing difference of abstraction (5004states) and FLOYD_HOARE automaton (currently 17 states, 10 states before enhancement), while ReachableStatesComputation was computing reachable states (5779 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 216 locations, 1 error locations. TIMEOUT Result, 253.2s OverallTime, 13 OverallIterations, 3 TraceHistogramMax, 92.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2552 SDtfs, 13628 SDslu, 4238 SDs, 0 SdLazy, 25325 SolverSat, 2946 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 78.9s Time, PredicateUnifierStatistics: 26 DeclaredPredicates, 2358 GetRequests, 2112 SyntacticMatches, 0 SemanticMatches, 246 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 985 ImplicationChecksByTransitivity, 10.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5004occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 139.9s AbstIntTime, 13 AbstIntIterations, 13 AbstIntStrong, 0.9938143709181577 AbsIntWeakeningRatio, 0.13530465949820789 AbsIntAvgWeakeningVarsNumRemoved, 887.6353046594982 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 12 MinimizatonAttempts, 1388 StatesRemovedByMinimization, 12 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/Problem10_label56_true-unreach-call.c_svcomp-Reach-64bit-ToothlessTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-19_03-36-52-077.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem10_label56_true-unreach-call.c_svcomp-Reach-64bit-ToothlessTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-19_03-36-52-077.csv Completed graceful shutdown