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_OCT-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label03_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-15 19:16:16,839 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-15 19:16:16,841 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-15 19:16:16,854 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-15 19:16:16,855 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-15 19:16:16,856 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-15 19:16:16,857 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-15 19:16:16,859 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-15 19:16:16,861 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-15 19:16:16,862 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-15 19:16:16,863 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-15 19:16:16,864 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-15 19:16:16,865 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-15 19:16:16,866 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-15 19:16:16,867 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-15 19:16:16,868 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-15 19:16:16,869 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-15 19:16:16,871 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-15 19:16:16,873 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-15 19:16:16,875 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-15 19:16:16,876 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-15 19:16:16,877 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-15 19:16:16,880 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-15 19:16:16,880 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-15 19:16:16,881 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-15 19:16:16,882 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-15 19:16:16,883 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-15 19:16:16,884 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-15 19:16:16,885 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-15 19:16:16,886 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-15 19:16:16,886 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-15 19:16:16,887 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-09-15 19:16:16,893 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_OCT-OldIcfg.epf [2018-09-15 19:16:16,923 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-15 19:16:16,923 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-15 19:16:16,927 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-15 19:16:16,927 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-15 19:16:16,927 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-15 19:16:16,927 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-15 19:16:16,927 INFO L133 SettingsManager]: * Congruence Domain=false [2018-09-15 19:16:16,928 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-15 19:16:16,928 INFO L133 SettingsManager]: * Abstract domain=OctagonDomain [2018-09-15 19:16:16,928 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-15 19:16:16,928 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-15 19:16:16,932 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-15 19:16:16,933 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-15 19:16:16,933 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-15 19:16:16,933 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-15 19:16:16,933 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-15 19:16:16,934 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-15 19:16:16,934 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-15 19:16:16,934 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-15 19:16:16,934 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-15 19:16:16,935 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-15 19:16:16,935 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-15 19:16:16,935 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-15 19:16:16,935 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-15 19:16:16,935 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-15 19:16:16,936 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-15 19:16:16,936 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-15 19:16:16,936 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-15 19:16:16,936 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-15 19:16:16,936 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-15 19:16:16,937 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-15 19:16:16,937 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-15 19:16:16,937 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-15 19:16:16,937 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-15 19:16:16,992 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-15 19:16:17,007 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-15 19:16:17,011 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-15 19:16:17,013 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-15 19:16:17,013 INFO L276 PluginConnector]: CDTParser initialized [2018-09-15 19:16:17,014 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label03_true-unreach-call.c [2018-09-15 19:16:17,384 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2ce7658f/b3ea8d2d82bf4dad8043476b75e974ec/FLAG120a2fcf3 [2018-09-15 19:16:17,726 INFO L277 CDTParser]: Found 1 translation units. [2018-09-15 19:16:17,727 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label03_true-unreach-call.c [2018-09-15 19:16:17,741 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2ce7658f/b3ea8d2d82bf4dad8043476b75e974ec/FLAG120a2fcf3 [2018-09-15 19:16:17,770 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2ce7658f/b3ea8d2d82bf4dad8043476b75e974ec [2018-09-15 19:16:17,784 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-15 19:16:17,788 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-15 19:16:17,789 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-15 19:16:17,789 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-15 19:16:17,798 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-15 19:16:17,799 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 07:16:17" (1/1) ... [2018-09-15 19:16:17,803 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56aae051 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:16:17, skipping insertion in model container [2018-09-15 19:16:17,803 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 07:16:17" (1/1) ... [2018-09-15 19:16:17,818 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-15 19:16:18,361 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-15 19:16:18,385 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-15 19:16:18,565 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-15 19:16:18,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:16:18 WrapperNode [2018-09-15 19:16:18,615 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-15 19:16:18,616 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-15 19:16:18,616 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-15 19:16:18,616 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-15 19:16:18,627 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:16:18" (1/1) ... [2018-09-15 19:16:18,654 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:16:18" (1/1) ... [2018-09-15 19:16:18,742 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-15 19:16:18,742 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-15 19:16:18,743 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-15 19:16:18,743 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-15 19:16:18,900 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:16:18" (1/1) ... [2018-09-15 19:16:18,900 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:16:18" (1/1) ... [2018-09-15 19:16:18,915 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:16:18" (1/1) ... [2018-09-15 19:16:18,915 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:16:18" (1/1) ... [2018-09-15 19:16:18,950 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:16:18" (1/1) ... [2018-09-15 19:16:18,974 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:16:18" (1/1) ... [2018-09-15 19:16:18,981 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:16:18" (1/1) ... [2018-09-15 19:16:18,997 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-15 19:16:18,999 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-15 19:16:18,999 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-15 19:16:18,999 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-15 19:16:19,000 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:16:18" (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 [2018-09-15 19:16:19,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-15 19:16:19,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-15 19:16:19,083 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-15 19:16:19,083 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-15 19:16:19,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-15 19:16:19,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-15 19:16:19,084 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-15 19:16:19,084 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-15 19:16:22,677 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-15 19:16:22,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 07:16:22 BoogieIcfgContainer [2018-09-15 19:16:22,678 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-15 19:16:22,679 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-15 19:16:22,679 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-15 19:16:22,682 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-15 19:16:22,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 07:16:17" (1/3) ... [2018-09-15 19:16:22,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@292ea6f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 07:16:22, skipping insertion in model container [2018-09-15 19:16:22,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:16:18" (2/3) ... [2018-09-15 19:16:22,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@292ea6f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 07:16:22, skipping insertion in model container [2018-09-15 19:16:22,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 07:16:22" (3/3) ... [2018-09-15 19:16:22,687 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label03_true-unreach-call.c [2018-09-15 19:16:22,697 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-15 19:16:22,707 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-15 19:16:22,765 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-15 19:16:22,766 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-15 19:16:22,766 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-15 19:16:22,766 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-15 19:16:22,766 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-15 19:16:22,767 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-15 19:16:22,767 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-15 19:16:22,767 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-15 19:16:22,767 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-15 19:16:22,803 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2018-09-15 19:16:22,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-09-15 19:16:22,815 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 19:16:22,816 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 19:16:22,817 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 19:16:22,824 INFO L82 PathProgramCache]: Analyzing trace with hash 1405656705, now seen corresponding path program 1 times [2018-09-15 19:16:22,826 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 19:16:22,827 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 44 with the following transitions: [2018-09-15 19:16:22,831 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [245], [247], [796], [800], [806], [810], [817], [818], [819], [821] [2018-09-15 19:16:22,892 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-15 19:16:22,893 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 19:16:24,028 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 19:16:24,031 INFO L272 AbstractInterpreter]: Visited 42 different actions 42 times. Never merged. Never widened. Never found a fixpoint. Largest state had 23 variables. [2018-09-15 19:16:24,059 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 19:16:24,638 INFO L232 lantSequenceWeakener]: Weakened 41 states. On average, predicates are now at 75.36% of their original sizes. [2018-09-15 19:16:24,639 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 19:16:24,942 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 19:16:24,944 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 19:16:24,944 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-15 19:16:24,944 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 19:16:24,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-15 19:16:24,958 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-15 19:16:24,959 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-15 19:16:24,961 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 6 states. [2018-09-15 19:16:28,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 19:16:28,540 INFO L93 Difference]: Finished difference Result 576 states and 995 transitions. [2018-09-15 19:16:28,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-15 19:16:28,542 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 43 [2018-09-15 19:16:28,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 19:16:28,562 INFO L225 Difference]: With dead ends: 576 [2018-09-15 19:16:28,562 INFO L226 Difference]: Without dead ends: 358 [2018-09-15 19:16:28,570 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 42 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-15 19:16:28,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2018-09-15 19:16:28,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 356. [2018-09-15 19:16:28,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2018-09-15 19:16:28,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 497 transitions. [2018-09-15 19:16:28,648 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 497 transitions. Word has length 43 [2018-09-15 19:16:28,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 19:16:28,649 INFO L480 AbstractCegarLoop]: Abstraction has 356 states and 497 transitions. [2018-09-15 19:16:28,649 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-15 19:16:28,649 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 497 transitions. [2018-09-15 19:16:28,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-09-15 19:16:28,655 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 19:16:28,655 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 19:16:28,656 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 19:16:28,656 INFO L82 PathProgramCache]: Analyzing trace with hash -1018978157, now seen corresponding path program 1 times [2018-09-15 19:16:28,656 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 19:16:28,657 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 115 with the following transitions: [2018-09-15 19:16:28,657 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [245], [247], [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] [2018-09-15 19:16:28,666 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-15 19:16:28,666 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 19:16:30,127 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-15 19:16:32,710 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 19:16:32,710 INFO L272 AbstractInterpreter]: Visited 78 different actions 150 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-09-15 19:16:32,719 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 19:16:34,620 INFO L232 lantSequenceWeakener]: Weakened 112 states. On average, predicates are now at 73.81% of their original sizes. [2018-09-15 19:16:34,621 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 19:16:35,428 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 19:16:35,429 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 19:16:35,429 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-15 19:16:35,429 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 19:16:35,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-15 19:16:35,431 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-15 19:16:35,431 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-09-15 19:16:35,431 INFO L87 Difference]: Start difference. First operand 356 states and 497 transitions. Second operand 10 states. [2018-09-15 19:16:43,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 19:16:43,003 INFO L93 Difference]: Finished difference Result 711 states and 1126 transitions. [2018-09-15 19:16:43,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-15 19:16:43,006 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 114 [2018-09-15 19:16:43,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 19:16:43,019 INFO L225 Difference]: With dead ends: 711 [2018-09-15 19:16:43,020 INFO L226 Difference]: Without dead ends: 505 [2018-09-15 19:16:43,022 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 120 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2018-09-15 19:16:43,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2018-09-15 19:16:43,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 502. [2018-09-15 19:16:43,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 502 states. [2018-09-15 19:16:43,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 655 transitions. [2018-09-15 19:16:43,080 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 655 transitions. Word has length 114 [2018-09-15 19:16:43,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 19:16:43,081 INFO L480 AbstractCegarLoop]: Abstraction has 502 states and 655 transitions. [2018-09-15 19:16:43,081 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-15 19:16:43,081 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 655 transitions. [2018-09-15 19:16:43,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-09-15 19:16:43,084 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 19:16:43,085 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 19:16:43,085 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 19:16:43,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1444484276, now seen corresponding path program 1 times [2018-09-15 19:16:43,086 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 19:16:43,086 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 124 with the following transitions: [2018-09-15 19:16:43,086 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [245], [247], [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] [2018-09-15 19:16:43,092 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-15 19:16:43,092 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 19:16:48,130 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 19:16:48,130 INFO L272 AbstractInterpreter]: Visited 87 different actions 167 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-09-15 19:16:48,135 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 19:16:48,981 INFO L232 lantSequenceWeakener]: Weakened 121 states. On average, predicates are now at 73.73% of their original sizes. [2018-09-15 19:16:48,982 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 19:16:49,512 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 19:16:49,513 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 19:16:49,513 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-09-15 19:16:49,513 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 19:16:49,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-15 19:16:49,514 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-15 19:16:49,514 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2018-09-15 19:16:49,515 INFO L87 Difference]: Start difference. First operand 502 states and 655 transitions. Second operand 12 states. [2018-09-15 19:17:00,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 19:17:00,242 INFO L93 Difference]: Finished difference Result 1002 states and 1569 transitions. [2018-09-15 19:17:00,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-15 19:17:00,243 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 123 [2018-09-15 19:17:00,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 19:17:00,249 INFO L225 Difference]: With dead ends: 1002 [2018-09-15 19:17:00,249 INFO L226 Difference]: Without dead ends: 796 [2018-09-15 19:17:00,251 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 130 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2018-09-15 19:17:00,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2018-09-15 19:17:00,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 793. [2018-09-15 19:17:00,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 793 states. [2018-09-15 19:17:00,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 962 transitions. [2018-09-15 19:17:00,289 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 962 transitions. Word has length 123 [2018-09-15 19:17:00,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 19:17:00,290 INFO L480 AbstractCegarLoop]: Abstraction has 793 states and 962 transitions. [2018-09-15 19:17:00,290 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-09-15 19:17:00,290 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 962 transitions. [2018-09-15 19:17:00,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2018-09-15 19:17:00,294 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 19:17:00,295 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 19:17:00,295 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 19:17:00,295 INFO L82 PathProgramCache]: Analyzing trace with hash 1342877780, now seen corresponding path program 1 times [2018-09-15 19:17:00,295 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 19:17:00,296 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 160 with the following transitions: [2018-09-15 19:17:00,296 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [245], [247], [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] [2018-09-15 19:17:00,302 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-15 19:17:00,303 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 19:17:04,803 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-15 19:17:14,044 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 19:17:14,044 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. [2018-09-15 19:17:14,052 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 19:17:15,997 INFO L232 lantSequenceWeakener]: Weakened 157 states. On average, predicates are now at 73.5% of their original sizes. [2018-09-15 19:17:15,998 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 19:17:16,752 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 19:17:16,753 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 19:17:16,753 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2018-09-15 19:17:16,753 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 19:17:16,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-15 19:17:16,754 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-15 19:17:16,754 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2018-09-15 19:17:16,755 INFO L87 Difference]: Start difference. First operand 793 states and 962 transitions. Second operand 14 states. [2018-09-15 19:17:28,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 19:17:28,863 INFO L93 Difference]: Finished difference Result 1161 states and 1610 transitions. [2018-09-15 19:17:28,864 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-09-15 19:17:28,864 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 159 [2018-09-15 19:17:28,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 19:17:28,869 INFO L225 Difference]: With dead ends: 1161 [2018-09-15 19:17:28,870 INFO L226 Difference]: Without dead ends: 955 [2018-09-15 19:17:28,871 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 170 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=154, Invalid=496, Unknown=0, NotChecked=0, Total=650 [2018-09-15 19:17:28,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955 states. [2018-09-15 19:17:28,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955 to 943. [2018-09-15 19:17:28,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 943 states. [2018-09-15 19:17:28,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 943 states to 943 states and 1137 transitions. [2018-09-15 19:17:28,916 INFO L78 Accepts]: Start accepts. Automaton has 943 states and 1137 transitions. Word has length 159 [2018-09-15 19:17:28,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 19:17:28,917 INFO L480 AbstractCegarLoop]: Abstraction has 943 states and 1137 transitions. [2018-09-15 19:17:28,917 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-15 19:17:28,917 INFO L276 IsEmpty]: Start isEmpty. Operand 943 states and 1137 transitions. [2018-09-15 19:17:28,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-09-15 19:17:28,921 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 19:17:28,921 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 19:17:28,922 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 19:17:28,922 INFO L82 PathProgramCache]: Analyzing trace with hash -1331084013, now seen corresponding path program 1 times [2018-09-15 19:17:28,922 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 19:17:28,922 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 179 with the following transitions: [2018-09-15 19:17:28,923 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [245], [247], [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] [2018-09-15 19:17:28,928 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-15 19:17:28,929 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 19:17:42,237 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 19:17:42,237 INFO L272 AbstractInterpreter]: Visited 142 different actions 278 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-09-15 19:17:42,242 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 19:17:43,896 INFO L232 lantSequenceWeakener]: Weakened 176 states. On average, predicates are now at 73.42% of their original sizes. [2018-09-15 19:17:43,896 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 19:17:45,289 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 19:17:45,290 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 19:17:45,290 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2018-09-15 19:17:45,290 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 19:17:45,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-09-15 19:17:45,291 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-09-15 19:17:45,291 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2018-09-15 19:17:45,291 INFO L87 Difference]: Start difference. First operand 943 states and 1137 transitions. Second operand 18 states. [2018-09-15 19:17:55,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 19:17:55,051 INFO L93 Difference]: Finished difference Result 1561 states and 2167 transitions. [2018-09-15 19:17:55,052 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-09-15 19:17:55,052 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 178 [2018-09-15 19:17:55,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 19:17:55,060 INFO L225 Difference]: With dead ends: 1561 [2018-09-15 19:17:55,060 INFO L226 Difference]: Without dead ends: 1207 [2018-09-15 19:17:55,063 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 194 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=287, Invalid=903, Unknown=0, NotChecked=0, Total=1190 [2018-09-15 19:17:55,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1207 states. [2018-09-15 19:17:55,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1207 to 1205. [2018-09-15 19:17:55,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1205 states. [2018-09-15 19:17:55,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1205 states to 1205 states and 1418 transitions. [2018-09-15 19:17:55,119 INFO L78 Accepts]: Start accepts. Automaton has 1205 states and 1418 transitions. Word has length 178 [2018-09-15 19:17:55,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 19:17:55,120 INFO L480 AbstractCegarLoop]: Abstraction has 1205 states and 1418 transitions. [2018-09-15 19:17:55,120 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-09-15 19:17:55,120 INFO L276 IsEmpty]: Start isEmpty. Operand 1205 states and 1418 transitions. [2018-09-15 19:17:55,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-09-15 19:17:55,123 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 19:17:55,124 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-15 19:17:55,124 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 19:17:55,124 INFO L82 PathProgramCache]: Analyzing trace with hash -975903850, now seen corresponding path program 1 times [2018-09-15 19:17:55,124 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 19:17:55,125 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 191 with the following transitions: [2018-09-15 19:17:55,125 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [245], [247], [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] [2018-09-15 19:17:55,134 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-15 19:17:55,134 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 19:17:56,526 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-15 19:18:03,126 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 19:18:03,127 INFO L272 AbstractInterpreter]: Visited 84 different actions 244 times. Merged at 7 different actions 14 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 24 variables. [2018-09-15 19:18:03,133 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 19:18:04,786 INFO L232 lantSequenceWeakener]: Weakened 188 states. On average, predicates are now at 73.43% of their original sizes. [2018-09-15 19:18:04,786 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 19:18:05,299 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 19:18:05,299 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 19:18:05,299 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-09-15 19:18:05,299 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 19:18:05,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-15 19:18:05,300 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-15 19:18:05,300 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-09-15 19:18:05,301 INFO L87 Difference]: Start difference. First operand 1205 states and 1418 transitions. Second operand 11 states. [2018-09-15 19:18:11,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 19:18:11,870 INFO L93 Difference]: Finished difference Result 1717 states and 2233 transitions. [2018-09-15 19:18:11,871 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-09-15 19:18:11,871 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 190 [2018-09-15 19:18:11,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 19:18:11,878 INFO L225 Difference]: With dead ends: 1717 [2018-09-15 19:18:11,878 INFO L226 Difference]: Without dead ends: 1363 [2018-09-15 19:18:11,880 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 199 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2018-09-15 19:18:11,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1363 states. [2018-09-15 19:18:11,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1363 to 1353. [2018-09-15 19:18:11,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1353 states. [2018-09-15 19:18:11,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1353 states to 1353 states and 1584 transitions. [2018-09-15 19:18:11,938 INFO L78 Accepts]: Start accepts. Automaton has 1353 states and 1584 transitions. Word has length 190 [2018-09-15 19:18:11,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 19:18:11,939 INFO L480 AbstractCegarLoop]: Abstraction has 1353 states and 1584 transitions. [2018-09-15 19:18:11,939 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-15 19:18:11,939 INFO L276 IsEmpty]: Start isEmpty. Operand 1353 states and 1584 transitions. [2018-09-15 19:18:11,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-09-15 19:18:11,942 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 19:18:11,942 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-15 19:18:11,943 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 19:18:11,943 INFO L82 PathProgramCache]: Analyzing trace with hash 647362910, now seen corresponding path program 1 times [2018-09-15 19:18:11,943 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 19:18:11,943 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 195 with the following transitions: [2018-09-15 19:18:11,944 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [245], [247], [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], [534], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-09-15 19:18:11,946 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-15 19:18:11,946 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 19:18:13,234 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-15 19:18:31,046 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 19:18:31,046 INFO L272 AbstractInterpreter]: Visited 88 different actions 511 times. Merged at 7 different actions 38 times. Widened at 1 different actions 1 times. Found 7 fixpoints after 2 different actions. Largest state had 24 variables. [2018-09-15 19:18:31,053 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 19:18:32,663 INFO L232 lantSequenceWeakener]: Weakened 192 states. On average, predicates are now at 73.42% of their original sizes. [2018-09-15 19:18:32,664 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 19:18:33,581 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 19:18:33,581 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 19:18:33,581 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2018-09-15 19:18:33,581 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 19:18:33,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-15 19:18:33,582 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-15 19:18:33,582 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2018-09-15 19:18:33,583 INFO L87 Difference]: Start difference. First operand 1353 states and 1584 transitions. Second operand 15 states. [2018-09-15 19:18:45,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 19:18:45,709 INFO L93 Difference]: Finished difference Result 2559 states and 3382 transitions. [2018-09-15 19:18:45,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-09-15 19:18:45,715 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 194 [2018-09-15 19:18:45,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 19:18:45,726 INFO L225 Difference]: With dead ends: 2559 [2018-09-15 19:18:45,726 INFO L226 Difference]: Without dead ends: 2057 [2018-09-15 19:18:45,729 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 205 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=177, Invalid=525, Unknown=0, NotChecked=0, Total=702 [2018-09-15 19:18:45,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2057 states. [2018-09-15 19:18:45,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2057 to 2037. [2018-09-15 19:18:45,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2037 states. [2018-09-15 19:18:45,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2037 states to 2037 states and 2424 transitions. [2018-09-15 19:18:45,827 INFO L78 Accepts]: Start accepts. Automaton has 2037 states and 2424 transitions. Word has length 194 [2018-09-15 19:18:45,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 19:18:45,827 INFO L480 AbstractCegarLoop]: Abstraction has 2037 states and 2424 transitions. [2018-09-15 19:18:45,828 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-15 19:18:45,828 INFO L276 IsEmpty]: Start isEmpty. Operand 2037 states and 2424 transitions. [2018-09-15 19:18:45,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2018-09-15 19:18:45,833 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 19:18:45,833 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-15 19:18:45,834 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 19:18:45,834 INFO L82 PathProgramCache]: Analyzing trace with hash 652203189, now seen corresponding path program 1 times [2018-09-15 19:18:45,834 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 19:18:45,834 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 228 with the following transitions: [2018-09-15 19:18:45,835 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [245], [247], [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] [2018-09-15 19:18:45,838 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-15 19:18:45,838 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 19:18:47,222 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-15 19:19:05,347 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 19:19:05,348 INFO L272 AbstractInterpreter]: Visited 121 different actions 356 times. Merged at 7 different actions 15 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 24 variables. [2018-09-15 19:19:05,358 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 19:19:07,976 INFO L232 lantSequenceWeakener]: Weakened 225 states. On average, predicates are now at 73.32% of their original sizes. [2018-09-15 19:19:07,976 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 19:19:09,634 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 19:19:09,634 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 19:19:09,634 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2018-09-15 19:19:09,634 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 19:19:09,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-09-15 19:19:09,635 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-09-15 19:19:09,635 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2018-09-15 19:19:09,635 INFO L87 Difference]: Start difference. First operand 2037 states and 2424 transitions. Second operand 19 states. [2018-09-15 19:19:26,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 19:19:26,277 INFO L93 Difference]: Finished difference Result 4438 states and 5613 transitions. [2018-09-15 19:19:26,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-09-15 19:19:26,278 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 227 [2018-09-15 19:19:26,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 19:19:26,293 INFO L225 Difference]: With dead ends: 4438 [2018-09-15 19:19:26,293 INFO L226 Difference]: Without dead ends: 2961 [2018-09-15 19:19:26,300 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 245 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=341, Invalid=1065, Unknown=0, NotChecked=0, Total=1406 [2018-09-15 19:19:26,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2961 states. [2018-09-15 19:19:26,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2961 to 2897. [2018-09-15 19:19:26,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2897 states. [2018-09-15 19:19:26,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2897 states to 2897 states and 3445 transitions. [2018-09-15 19:19:26,469 INFO L78 Accepts]: Start accepts. Automaton has 2897 states and 3445 transitions. Word has length 227 [2018-09-15 19:19:26,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 19:19:26,470 INFO L480 AbstractCegarLoop]: Abstraction has 2897 states and 3445 transitions. [2018-09-15 19:19:26,470 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-09-15 19:19:26,470 INFO L276 IsEmpty]: Start isEmpty. Operand 2897 states and 3445 transitions. [2018-09-15 19:19:26,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-09-15 19:19:26,480 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 19:19:26,480 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-15 19:19:26,480 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 19:19:26,481 INFO L82 PathProgramCache]: Analyzing trace with hash -1611377340, now seen corresponding path program 1 times [2018-09-15 19:19:26,481 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 19:19:26,481 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 233 with the following transitions: [2018-09-15 19:19:26,481 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [245], [247], [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] [2018-09-15 19:19:26,485 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-15 19:19:26,485 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 19:19:30,606 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-15 19:19:57,525 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 19:19:57,526 INFO L272 AbstractInterpreter]: Visited 124 different actions 604 times. Merged at 7 different actions 28 times. Never widened. Found 5 fixpoints after 2 different actions. Largest state had 24 variables. [2018-09-15 19:19:57,535 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 19:20:00,268 INFO L232 lantSequenceWeakener]: Weakened 230 states. On average, predicates are now at 73.3% of their original sizes. [2018-09-15 19:20:00,269 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 19:20:03,915 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 19:20:03,916 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 19:20:03,916 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2018-09-15 19:20:03,916 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 19:20:03,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-09-15 19:20:03,917 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-09-15 19:20:03,917 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2018-09-15 19:20:03,917 INFO L87 Difference]: Start difference. First operand 2897 states and 3445 transitions. Second operand 17 states. [2018-09-15 19:20:13,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 19:20:13,191 INFO L93 Difference]: Finished difference Result 5136 states and 6327 transitions. [2018-09-15 19:20:13,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-09-15 19:20:13,198 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 232 [2018-09-15 19:20:13,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 19:20:13,211 INFO L225 Difference]: With dead ends: 5136 [2018-09-15 19:20:13,211 INFO L226 Difference]: Without dead ends: 3090 [2018-09-15 19:20:13,218 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 245 GetRequests, 205 SyntacticMatches, 11 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=236, Invalid=694, Unknown=0, NotChecked=0, Total=930 [2018-09-15 19:20:13,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3090 states. [2018-09-15 19:20:13,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3090 to 3049. [2018-09-15 19:20:13,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3049 states. [2018-09-15 19:20:13,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3049 states to 3049 states and 3644 transitions. [2018-09-15 19:20:13,381 INFO L78 Accepts]: Start accepts. Automaton has 3049 states and 3644 transitions. Word has length 232 [2018-09-15 19:20:13,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 19:20:13,382 INFO L480 AbstractCegarLoop]: Abstraction has 3049 states and 3644 transitions. [2018-09-15 19:20:13,382 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-09-15 19:20:13,382 INFO L276 IsEmpty]: Start isEmpty. Operand 3049 states and 3644 transitions. [2018-09-15 19:20:13,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2018-09-15 19:20:13,389 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 19:20:13,389 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 19:20:13,390 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 19:20:13,390 INFO L82 PathProgramCache]: Analyzing trace with hash 27354235, now seen corresponding path program 1 times [2018-09-15 19:20:13,390 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 19:20:13,390 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 238 with the following transitions: [2018-09-15 19:20:13,391 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [245], [247], [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], [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] [2018-09-15 19:20:13,394 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-15 19:20:13,395 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 19:20:17,465 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-15 19:20:39,081 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 19:20:39,081 INFO L272 AbstractInterpreter]: Visited 124 different actions 605 times. Merged at 7 different actions 29 times. Never widened. Found 5 fixpoints after 2 different actions. Largest state had 24 variables. [2018-09-15 19:20:39,092 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 19:20:41,012 INFO L232 lantSequenceWeakener]: Weakened 235 states. On average, predicates are now at 73.29% of their original sizes. [2018-09-15 19:20:41,012 INFO L412 sIntCurrentIteration]: Unifying AI predicates Received shutdown request... [2018-09-15 19:20:41,048 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-15 19:20:41,053 WARN L206 ceAbstractionStarter]: Timeout [2018-09-15 19:20:41,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.09 07:20:41 BoogieIcfgContainer [2018-09-15 19:20:41,053 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-15 19:20:41,054 INFO L168 Benchmark]: Toolchain (without parser) took 263269.59 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 2.7 GB in the end (delta: -1.3 GB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-09-15 19:20:41,056 INFO L168 Benchmark]: CDTParser took 0.22 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. [2018-09-15 19:20:41,056 INFO L168 Benchmark]: CACSL2BoogieTranslator took 825.91 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. [2018-09-15 19:20:41,057 INFO L168 Benchmark]: Boogie Procedure Inliner took 126.14 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. [2018-09-15 19:20:41,058 INFO L168 Benchmark]: Boogie Preprocessor took 255.85 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 764.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -861.3 MB). Peak memory consumption was 29.0 MB. Max. memory is 7.1 GB. [2018-09-15 19:20:41,060 INFO L168 Benchmark]: RCFGBuilder took 3679.33 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: 106.9 MB). Peak memory consumption was 106.9 MB. Max. memory is 7.1 GB. [2018-09-15 19:20:41,061 INFO L168 Benchmark]: TraceAbstraction took 258374.71 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 2.7 GB in the end (delta: -579.8 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-09-15 19:20:41,068 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 825.91 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 126.14 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 255.85 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 764.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -861.3 MB). Peak memory consumption was 29.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3679.33 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: 106.9 MB). Peak memory consumption was 106.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 258374.71 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 2.7 GB in the end (delta: -579.8 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 112]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 112). Cancelled while BasicCegarLoop was analyzing trace of length 238 with TraceHistMax 3, while AbsIntCurrentIteration was generating AI predicates, while PredicateComparison was comparing new predicate (quantifier-free) to 4 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 216 locations, 1 error locations. TIMEOUT Result, 258.2s OverallTime, 10 OverallIterations, 3 TraceHistogramMax, 88.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1800 SDtfs, 8867 SDslu, 2576 SDs, 0 SdLazy, 16288 SolverSat, 1915 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 75.3s Time, PredicateUnifierStatistics: 18 DeclaredPredicates, 1550 GetRequests, 1336 SyntacticMatches, 11 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1128 ImplicationChecksByTransitivity, 17.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3049occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 140.8s AbstIntTime, 10 AbstIntIterations, 10 AbstIntStrong, 0.9939132894887897 AbsIntWeakeningRatio, 0.13278008298755187 AbsIntAvgWeakeningVarsNumRemoved, 66.59395376407825 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 9 MinimizatonAttempts, 157 StatesRemovedByMinimization, 9 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_label03_true-unreach-call.c_svcomp-Reach-64bit-ToothlessTaipan_OCT-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-15_19-20-41-082.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem10_label03_true-unreach-call.c_svcomp-Reach-64bit-ToothlessTaipan_OCT-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-15_19-20-41-082.csv Completed graceful shutdown