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_label54_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-15 14:31:04,888 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-15 14:31:04,890 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-15 14:31:04,903 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-15 14:31:04,903 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-15 14:31:04,904 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-15 14:31:04,906 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-15 14:31:04,908 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-15 14:31:04,911 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-15 14:31:04,912 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-15 14:31:04,913 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-15 14:31:04,913 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-15 14:31:04,914 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-15 14:31:04,917 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-15 14:31:04,921 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-15 14:31:04,922 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-15 14:31:04,923 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-15 14:31:04,925 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-15 14:31:04,935 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-15 14:31:04,941 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-15 14:31:04,942 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-15 14:31:04,946 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-15 14:31:04,954 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-15 14:31:04,954 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-15 14:31:04,954 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-15 14:31:04,956 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-15 14:31:04,960 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-15 14:31:04,961 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-15 14:31:04,965 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-15 14:31:04,968 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-15 14:31:04,969 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-15 14:31:04,969 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-15 14:31:04,970 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-15 14:31:04,970 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-15 14:31:04,973 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-15 14:31:04,976 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-15 14:31:04,977 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 14:31:05,019 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-15 14:31:05,019 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-15 14:31:05,022 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-15 14:31:05,022 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-15 14:31:05,022 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-15 14:31:05,022 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-15 14:31:05,023 INFO L133 SettingsManager]: * Congruence Domain=false [2018-09-15 14:31:05,023 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-15 14:31:05,023 INFO L133 SettingsManager]: * Octagon Domain=false [2018-09-15 14:31:05,023 INFO L133 SettingsManager]: * Abstract domain=IntervalDomain [2018-09-15 14:31:05,024 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-15 14:31:05,024 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-15 14:31:05,025 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-15 14:31:05,030 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-15 14:31:05,030 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-15 14:31:05,030 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-15 14:31:05,030 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-15 14:31:05,031 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-15 14:31:05,031 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-15 14:31:05,031 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-15 14:31:05,031 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-15 14:31:05,031 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-15 14:31:05,032 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-15 14:31:05,032 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-15 14:31:05,032 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-15 14:31:05,032 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-15 14:31:05,034 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-15 14:31:05,035 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-15 14:31:05,035 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-15 14:31:05,035 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-15 14:31:05,035 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-15 14:31:05,036 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-15 14:31:05,036 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-15 14:31:05,036 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-15 14:31:05,131 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-15 14:31:05,146 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-15 14:31:05,151 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-15 14:31:05,153 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-15 14:31:05,153 INFO L276 PluginConnector]: CDTParser initialized [2018-09-15 14:31:05,154 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label54_true-unreach-call.c [2018-09-15 14:31:05,553 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81cbcf670/02533d8c232543989d2d00b643deb984/FLAG1ab19aa59 [2018-09-15 14:31:06,076 INFO L277 CDTParser]: Found 1 translation units. [2018-09-15 14:31:06,077 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label54_true-unreach-call.c [2018-09-15 14:31:06,105 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81cbcf670/02533d8c232543989d2d00b643deb984/FLAG1ab19aa59 [2018-09-15 14:31:06,144 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81cbcf670/02533d8c232543989d2d00b643deb984 [2018-09-15 14:31:06,164 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-15 14:31:06,168 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-15 14:31:06,170 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-15 14:31:06,170 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-15 14:31:06,179 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-15 14:31:06,181 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 02:31:06" (1/1) ... [2018-09-15 14:31:06,186 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14d0561 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:31:06, skipping insertion in model container [2018-09-15 14:31:06,186 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 02:31:06" (1/1) ... [2018-09-15 14:31:06,202 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-15 14:31:06,991 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-15 14:31:07,015 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-15 14:31:07,178 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-15 14:31:07,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:31:07 WrapperNode [2018-09-15 14:31:07,267 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-15 14:31:07,268 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-15 14:31:07,268 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-15 14:31:07,268 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-15 14:31:07,279 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:31:07" (1/1) ... [2018-09-15 14:31:07,321 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:31:07" (1/1) ... [2018-09-15 14:31:07,454 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-15 14:31:07,455 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-15 14:31:07,456 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-15 14:31:07,456 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-15 14:31:07,806 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:31:07" (1/1) ... [2018-09-15 14:31:07,807 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:31:07" (1/1) ... [2018-09-15 14:31:07,831 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:31:07" (1/1) ... [2018-09-15 14:31:07,832 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:31:07" (1/1) ... [2018-09-15 14:31:07,903 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:31:07" (1/1) ... [2018-09-15 14:31:07,918 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:31:07" (1/1) ... [2018-09-15 14:31:07,941 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:31:07" (1/1) ... [2018-09-15 14:31:07,954 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-15 14:31:07,955 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-15 14:31:07,955 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-15 14:31:07,955 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-15 14:31:07,956 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:31:07" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-15 14:31:08,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-15 14:31:08,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-15 14:31:08,050 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-15 14:31:08,050 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-15 14:31:08,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-15 14:31:08,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-15 14:31:08,051 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-15 14:31:08,051 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-15 14:31:13,820 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-15 14:31:13,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 02:31:13 BoogieIcfgContainer [2018-09-15 14:31:13,822 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-15 14:31:13,823 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-15 14:31:13,823 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-15 14:31:13,827 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-15 14:31:13,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 02:31:06" (1/3) ... [2018-09-15 14:31:13,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3828e62b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 02:31:13, skipping insertion in model container [2018-09-15 14:31:13,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:31:07" (2/3) ... [2018-09-15 14:31:13,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3828e62b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 02:31:13, skipping insertion in model container [2018-09-15 14:31:13,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 02:31:13" (3/3) ... [2018-09-15 14:31:13,832 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label54_true-unreach-call.c [2018-09-15 14:31:13,845 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-15 14:31:13,856 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-15 14:31:13,921 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-15 14:31:13,922 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-15 14:31:13,922 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-15 14:31:13,922 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-15 14:31:13,923 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-15 14:31:13,923 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-15 14:31:13,923 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-15 14:31:13,923 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-15 14:31:13,923 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-15 14:31:13,964 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-09-15 14:31:13,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-09-15 14:31:13,976 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 14:31:13,978 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] [2018-09-15 14:31:13,979 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 14:31:13,986 INFO L82 PathProgramCache]: Analyzing trace with hash -639357604, now seen corresponding path program 1 times [2018-09-15 14:31:13,989 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 14:31:13,991 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 45 with the following transitions: [2018-09-15 14:31:13,994 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], [253], [255], [1088], [1092], [1098], [1102], [1109], [1110], [1111], [1113] [2018-09-15 14:31:14,042 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2018-09-15 14:31:14,042 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 14:31:24,196 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 14:31:24,199 INFO L272 AbstractInterpreter]: Visited 43 different actions 43 times. Never merged. Never widened. Never found a fixpoint. Largest state had 27 variables. [2018-09-15 14:31:24,219 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 14:31:32,631 INFO L232 lantSequenceWeakener]: Weakened 41 states. On average, predicates are now at 74.55% of their original sizes. [2018-09-15 14:31:32,631 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 14:31:32,760 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 14:31:32,762 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 14:31:32,762 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-15 14:31:32,762 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 14:31:32,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-15 14:31:32,772 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-15 14:31:32,773 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-15 14:31:32,775 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 6 states. [2018-09-15 14:31:35,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 14:31:35,787 INFO L93 Difference]: Finished difference Result 776 states and 1363 transitions. [2018-09-15 14:31:35,790 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-15 14:31:35,791 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 44 [2018-09-15 14:31:35,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 14:31:35,811 INFO L225 Difference]: With dead ends: 776 [2018-09-15 14:31:35,811 INFO L226 Difference]: Without dead ends: 481 [2018-09-15 14:31:35,820 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 43 GetRequests, 39 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 14:31:35,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2018-09-15 14:31:35,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 479. [2018-09-15 14:31:35,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479 states. [2018-09-15 14:31:35,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 682 transitions. [2018-09-15 14:31:35,902 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 682 transitions. Word has length 44 [2018-09-15 14:31:35,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 14:31:35,902 INFO L480 AbstractCegarLoop]: Abstraction has 479 states and 682 transitions. [2018-09-15 14:31:35,903 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-15 14:31:35,903 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 682 transitions. [2018-09-15 14:31:35,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-09-15 14:31:35,912 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 14:31:35,912 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:31:35,912 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 14:31:35,913 INFO L82 PathProgramCache]: Analyzing trace with hash -4036219, now seen corresponding path program 1 times [2018-09-15 14:31:35,913 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 14:31:35,913 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 162 with the following transitions: [2018-09-15 14:31:35,914 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], [253], [255], [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], [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 14:31:35,926 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2018-09-15 14:31:35,927 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2)