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_INT-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label40_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-15 14:29:02,777 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-15 14:29:02,781 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-15 14:29:02,800 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-15 14:29:02,801 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-15 14:29:02,802 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-15 14:29:02,805 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-15 14:29:02,809 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-15 14:29:02,820 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-15 14:29:02,822 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-15 14:29:02,823 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-15 14:29:02,824 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-15 14:29:02,825 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-15 14:29:02,827 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-15 14:29:02,828 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-15 14:29:02,829 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-15 14:29:02,830 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-15 14:29:02,833 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-15 14:29:02,836 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-15 14:29:02,838 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-15 14:29:02,839 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-15 14:29:02,841 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-15 14:29:02,844 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-15 14:29:02,845 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-15 14:29:02,845 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-15 14:29:02,846 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-15 14:29:02,848 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-15 14:29:02,849 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-15 14:29:02,850 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-15 14:29:02,851 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-15 14:29:02,852 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-15 14:29:02,853 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-15 14:29:02,853 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-15 14:29:02,853 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-15 14:29:02,855 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-15 14:29:02,856 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-15 14:29:02,856 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_INT-OldIcfg.epf [2018-09-15 14:29:02,889 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-15 14:29:02,890 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-15 14:29:02,892 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-15 14:29:02,892 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-15 14:29:02,892 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-15 14:29:02,893 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-15 14:29:02,893 INFO L133 SettingsManager]: * Congruence Domain=false [2018-09-15 14:29:02,893 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-15 14:29:02,893 INFO L133 SettingsManager]: * Octagon Domain=false [2018-09-15 14:29:02,894 INFO L133 SettingsManager]: * Abstract domain=IntervalDomain [2018-09-15 14:29:02,894 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-15 14:29:02,894 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-15 14:29:02,895 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-15 14:29:02,895 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-15 14:29:02,896 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-15 14:29:02,896 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-15 14:29:02,897 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-15 14:29:02,897 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-15 14:29:02,897 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-15 14:29:02,897 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-15 14:29:02,898 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-15 14:29:02,898 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-15 14:29:02,898 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-15 14:29:02,898 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-15 14:29:02,900 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-15 14:29:02,900 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-15 14:29:02,901 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-15 14:29:02,901 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-15 14:29:02,901 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-15 14:29:02,901 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-15 14:29:02,901 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-15 14:29:02,902 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-15 14:29:02,902 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-15 14:29:02,902 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-15 14:29:02,975 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-15 14:29:02,992 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-15 14:29:02,997 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-15 14:29:02,998 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-15 14:29:02,999 INFO L276 PluginConnector]: CDTParser initialized [2018-09-15 14:29:02,999 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label40_true-unreach-call.c [2018-09-15 14:29:03,475 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3faf0d4cb/244176dbcd9447d4a0e5469cb878bfba/FLAG0780dfc60 [2018-09-15 14:29:04,143 INFO L277 CDTParser]: Found 1 translation units. [2018-09-15 14:29:04,145 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label40_true-unreach-call.c [2018-09-15 14:29:04,179 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3faf0d4cb/244176dbcd9447d4a0e5469cb878bfba/FLAG0780dfc60 [2018-09-15 14:29:04,202 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3faf0d4cb/244176dbcd9447d4a0e5469cb878bfba [2018-09-15 14:29:04,214 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-15 14:29:04,218 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-15 14:29:04,219 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-15 14:29:04,219 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-15 14:29:04,226 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-15 14:29:04,227 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 02:29:04" (1/1) ... [2018-09-15 14:29:04,231 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24f42403 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:29:04, skipping insertion in model container [2018-09-15 14:29:04,231 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 02:29:04" (1/1) ... [2018-09-15 14:29:04,246 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-15 14:29:04,892 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-15 14:29:04,911 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-15 14:29:05,091 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-15 14:29:05,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:29:05 WrapperNode [2018-09-15 14:29:05,160 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-15 14:29:05,161 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-15 14:29:05,161 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-15 14:29:05,161 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-15 14:29:05,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:29:05" (1/1) ... [2018-09-15 14:29:05,218 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:29:05" (1/1) ... [2018-09-15 14:29:05,353 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-15 14:29:05,353 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-15 14:29:05,354 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-15 14:29:05,354 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-15 14:29:05,643 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:29:05" (1/1) ... [2018-09-15 14:29:05,644 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:29:05" (1/1) ... [2018-09-15 14:29:05,694 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:29:05" (1/1) ... [2018-09-15 14:29:05,698 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:29:05" (1/1) ... [2018-09-15 14:29:05,804 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:29:05" (1/1) ... [2018-09-15 14:29:05,823 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:29:05" (1/1) ... [2018-09-15 14:29:05,847 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:29:05" (1/1) ... [2018-09-15 14:29:05,868 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-15 14:29:05,869 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-15 14:29:05,869 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-15 14:29:05,869 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-15 14:29:05,870 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:29:05" (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 14:29:05,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-15 14:29:05,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-15 14:29:05,944 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-15 14:29:05,944 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-15 14:29:05,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-15 14:29:05,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-15 14:29:05,945 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-15 14:29:05,945 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-15 14:29:10,664 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-15 14:29:10,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 02:29:10 BoogieIcfgContainer [2018-09-15 14:29:10,666 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-15 14:29:10,668 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-15 14:29:10,669 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-15 14:29:10,678 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-15 14:29:10,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 02:29:04" (1/3) ... [2018-09-15 14:29:10,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d4c2dc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 02:29:10, skipping insertion in model container [2018-09-15 14:29:10,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:29:05" (2/3) ... [2018-09-15 14:29:10,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d4c2dc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 02:29:10, skipping insertion in model container [2018-09-15 14:29:10,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 02:29:10" (3/3) ... [2018-09-15 14:29:10,688 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label40_true-unreach-call.c [2018-09-15 14:29:10,704 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-15 14:29:10,723 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-15 14:29:10,818 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-15 14:29:10,820 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-15 14:29:10,821 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-15 14:29:10,821 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-15 14:29:10,821 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-15 14:29:10,821 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-15 14:29:10,822 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-15 14:29:10,822 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-15 14:29:10,822 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-15 14:29:10,884 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-09-15 14:29:10,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-09-15 14:29:10,900 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 14:29:10,902 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 14:29:10,905 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 14:29:10,913 INFO L82 PathProgramCache]: Analyzing trace with hash -1597771487, now seen corresponding path program 1 times [2018-09-15 14:29:10,917 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 14:29:10,919 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 52 with the following transitions: [2018-09-15 14:29:10,926 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [309], [311], [1088], [1092], [1098], [1102], [1109], [1110], [1111], [1113] [2018-09-15 14:29:11,013 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2018-09-15 14:29:11,013 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 14:29:23,218 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 14:29:23,220 INFO L272 AbstractInterpreter]: Visited 50 different actions 50 times. Never merged. Never widened. Never found a fixpoint. Largest state had 27 variables. [2018-09-15 14:29:23,274 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 14:29:32,237 INFO L232 lantSequenceWeakener]: Weakened 48 states. On average, predicates are now at 74.9% of their original sizes. [2018-09-15 14:29:32,238 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 14:29:32,417 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 14:29:32,419 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 14:29:32,420 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-15 14:29:32,420 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 14:29:32,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-15 14:29:32,436 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-15 14:29:32,437 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-15 14:29:32,441 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 6 states. [2018-09-15 14:29:35,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 14:29:35,999 INFO L93 Difference]: Finished difference Result 776 states and 1363 transitions. [2018-09-15 14:29:36,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-15 14:29:36,003 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 51 [2018-09-15 14:29:36,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 14:29:36,022 INFO L225 Difference]: With dead ends: 776 [2018-09-15 14:29:36,022 INFO L226 Difference]: Without dead ends: 481 [2018-09-15 14:29:36,029 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 50 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-15 14:29:36,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2018-09-15 14:29:36,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 479. [2018-09-15 14:29:36,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479 states. [2018-09-15 14:29:36,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 682 transitions. [2018-09-15 14:29:36,101 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 682 transitions. Word has length 51 [2018-09-15 14:29:36,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 14:29:36,101 INFO L480 AbstractCegarLoop]: Abstraction has 479 states and 682 transitions. [2018-09-15 14:29:36,102 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-15 14:29:36,102 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 682 transitions. [2018-09-15 14:29:36,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-09-15 14:29:36,111 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 14:29:36,111 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:29:36,112 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 14:29:36,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1775157657, now seen corresponding path program 1 times [2018-09-15 14:29:36,112 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 14:29:36,113 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 169 with the following transitions: [2018-09-15 14:29:36,113 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [309], [311], [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], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-09-15 14:29:36,120 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2018-09-15 14:29:36,120 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2)