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_label13_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-15 14:25:06,456 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-15 14:25:06,461 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-15 14:25:06,482 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-15 14:25:06,482 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-15 14:25:06,484 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-15 14:25:06,486 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-15 14:25:06,490 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-15 14:25:06,499 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-15 14:25:06,501 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-15 14:25:06,502 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-15 14:25:06,502 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-15 14:25:06,507 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-15 14:25:06,510 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-15 14:25:06,511 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-15 14:25:06,512 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-15 14:25:06,515 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-15 14:25:06,517 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-15 14:25:06,519 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-15 14:25:06,524 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-15 14:25:06,525 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-15 14:25:06,528 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-15 14:25:06,532 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-15 14:25:06,534 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-15 14:25:06,534 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-15 14:25:06,535 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-15 14:25:06,536 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-15 14:25:06,537 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-15 14:25:06,538 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-15 14:25:06,539 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-15 14:25:06,542 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-15 14:25:06,543 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-15 14:25:06,543 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-15 14:25:06,543 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-15 14:25:06,544 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-15 14:25:06,545 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-15 14:25:06,545 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 14:25:06,564 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-15 14:25:06,565 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-15 14:25:06,566 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-15 14:25:06,566 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-15 14:25:06,566 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-15 14:25:06,566 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-15 14:25:06,566 INFO L133 SettingsManager]: * Congruence Domain=false [2018-09-15 14:25:06,567 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-15 14:25:06,567 INFO L133 SettingsManager]: * Octagon Domain=false [2018-09-15 14:25:06,567 INFO L133 SettingsManager]: * Abstract domain=IntervalDomain [2018-09-15 14:25:06,567 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-15 14:25:06,567 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-15 14:25:06,568 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-15 14:25:06,568 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-15 14:25:06,568 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-15 14:25:06,569 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-15 14:25:06,569 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-15 14:25:06,569 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-15 14:25:06,569 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-15 14:25:06,569 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-15 14:25:06,570 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-15 14:25:06,570 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-15 14:25:06,570 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-15 14:25:06,570 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-15 14:25:06,570 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-15 14:25:06,570 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-15 14:25:06,571 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-15 14:25:06,571 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-15 14:25:06,571 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-15 14:25:06,571 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-15 14:25:06,571 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-15 14:25:06,572 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-15 14:25:06,572 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-15 14:25:06,572 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-15 14:25:06,625 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-15 14:25:06,639 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-15 14:25:06,643 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-15 14:25:06,645 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-15 14:25:06,646 INFO L276 PluginConnector]: CDTParser initialized [2018-09-15 14:25:06,646 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label13_true-unreach-call.c [2018-09-15 14:25:07,028 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71e840d09/2d911d239016486080e15fb9215b859d/FLAG3065a6bb9 [2018-09-15 14:25:07,432 INFO L277 CDTParser]: Found 1 translation units. [2018-09-15 14:25:07,437 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label13_true-unreach-call.c [2018-09-15 14:25:07,469 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71e840d09/2d911d239016486080e15fb9215b859d/FLAG3065a6bb9 [2018-09-15 14:25:07,509 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71e840d09/2d911d239016486080e15fb9215b859d [2018-09-15 14:25:07,527 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-15 14:25:07,537 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-15 14:25:07,539 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-15 14:25:07,539 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-15 14:25:07,549 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-15 14:25:07,553 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 02:25:07" (1/1) ... [2018-09-15 14:25:07,559 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24cfa716 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:25:07, skipping insertion in model container [2018-09-15 14:25:07,560 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 02:25:07" (1/1) ... [2018-09-15 14:25:07,576 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-15 14:25:08,249 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-15 14:25:08,269 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-15 14:25:08,495 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-15 14:25:08,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:25:08 WrapperNode [2018-09-15 14:25:08,594 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-15 14:25:08,595 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-15 14:25:08,596 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-15 14:25:08,596 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-15 14:25:08,608 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:25:08" (1/1) ... [2018-09-15 14:25:08,675 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:25:08" (1/1) ... [2018-09-15 14:25:08,800 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-15 14:25:08,801 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-15 14:25:08,801 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-15 14:25:08,802 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-15 14:25:09,077 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:25:08" (1/1) ... [2018-09-15 14:25:09,078 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:25:08" (1/1) ... [2018-09-15 14:25:09,090 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:25:08" (1/1) ... [2018-09-15 14:25:09,091 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:25:08" (1/1) ... [2018-09-15 14:25:09,165 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:25:08" (1/1) ... [2018-09-15 14:25:09,200 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:25:08" (1/1) ... [2018-09-15 14:25:09,227 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:25:08" (1/1) ... [2018-09-15 14:25:09,250 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-15 14:25:09,251 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-15 14:25:09,251 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-15 14:25:09,251 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-15 14:25:09,254 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:25:08" (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 14:25:09,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-15 14:25:09,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-15 14:25:09,341 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-15 14:25:09,342 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-15 14:25:09,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-15 14:25:09,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-15 14:25:09,342 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-15 14:25:09,343 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-15 14:25:14,381 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-15 14:25:14,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 02:25:14 BoogieIcfgContainer [2018-09-15 14:25:14,382 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-15 14:25:14,384 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-15 14:25:14,384 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-15 14:25:14,388 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-15 14:25:14,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 02:25:07" (1/3) ... [2018-09-15 14:25:14,390 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64ddcbb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 02:25:14, skipping insertion in model container [2018-09-15 14:25:14,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:25:08" (2/3) ... [2018-09-15 14:25:14,392 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64ddcbb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 02:25:14, skipping insertion in model container [2018-09-15 14:25:14,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 02:25:14" (3/3) ... [2018-09-15 14:25:14,395 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label13_true-unreach-call.c [2018-09-15 14:25:14,409 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-15 14:25:14,423 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-15 14:25:14,487 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-15 14:25:14,488 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-15 14:25:14,488 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-15 14:25:14,488 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-15 14:25:14,488 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-15 14:25:14,489 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-15 14:25:14,489 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-15 14:25:14,489 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-15 14:25:14,489 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-15 14:25:14,522 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-09-15 14:25:14,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-09-15 14:25:14,532 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 14:25:14,533 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] [2018-09-15 14:25:14,535 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 14:25:14,541 INFO L82 PathProgramCache]: Analyzing trace with hash -739085812, now seen corresponding path program 1 times [2018-09-15 14:25:14,544 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 14:25:14,546 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 41 with the following transitions: [2018-09-15 14:25:14,549 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], [221], [223], [1088], [1092], [1098], [1102], [1109], [1110], [1111], [1113] [2018-09-15 14:25:14,597 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2018-09-15 14:25:14,598 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 14:25:25,981 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 14:25:25,983 INFO L272 AbstractInterpreter]: Visited 39 different actions 39 times. Never merged. Never widened. Never found a fixpoint. Largest state had 27 variables. [2018-09-15 14:25:25,999 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 14:25:32,959 INFO L232 lantSequenceWeakener]: Weakened 37 states. On average, predicates are now at 74.3% of their original sizes. [2018-09-15 14:25:32,960 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 14:25:33,192 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 14:25:33,194 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 14:25:33,197 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-15 14:25:33,197 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 14:25:33,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-15 14:25:33,214 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-15 14:25:33,215 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-15 14:25:33,218 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 6 states. [2018-09-15 14:25:36,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 14:25:36,594 INFO L93 Difference]: Finished difference Result 776 states and 1363 transitions. [2018-09-15 14:25:36,595 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-15 14:25:36,596 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2018-09-15 14:25:36,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 14:25:36,615 INFO L225 Difference]: With dead ends: 776 [2018-09-15 14:25:36,616 INFO L226 Difference]: Without dead ends: 481 [2018-09-15 14:25:36,623 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 39 GetRequests, 35 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 14:25:36,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2018-09-15 14:25:36,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 479. [2018-09-15 14:25:36,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479 states. [2018-09-15 14:25:36,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 682 transitions. [2018-09-15 14:25:36,697 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 682 transitions. Word has length 40 [2018-09-15 14:25:36,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 14:25:36,698 INFO L480 AbstractCegarLoop]: Abstraction has 479 states and 682 transitions. [2018-09-15 14:25:36,698 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-15 14:25:36,698 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 682 transitions. [2018-09-15 14:25:36,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-09-15 14:25:36,706 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 14:25:36,707 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:25:36,707 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 14:25:36,707 INFO L82 PathProgramCache]: Analyzing trace with hash 1799637621, now seen corresponding path program 1 times [2018-09-15 14:25:36,707 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 14:25:36,708 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 158 with the following transitions: [2018-09-15 14:25:36,708 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], [221], [223], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [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 14:25:36,718 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2018-09-15 14:25:36,718 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2)