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/Problem12_label57_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-15 14:39:57,167 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-15 14:39:57,169 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-15 14:39:57,188 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-15 14:39:57,188 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-15 14:39:57,190 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-15 14:39:57,191 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-15 14:39:57,194 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-15 14:39:57,196 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-15 14:39:57,198 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-15 14:39:57,199 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-15 14:39:57,199 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-15 14:39:57,202 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-15 14:39:57,203 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-15 14:39:57,206 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-15 14:39:57,207 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-15 14:39:57,208 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-15 14:39:57,210 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-15 14:39:57,212 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-15 14:39:57,213 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-15 14:39:57,214 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-15 14:39:57,216 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-15 14:39:57,218 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-15 14:39:57,218 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-15 14:39:57,219 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-15 14:39:57,219 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-15 14:39:57,220 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-15 14:39:57,221 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-15 14:39:57,224 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-15 14:39:57,225 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-15 14:39:57,226 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-15 14:39:57,227 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-15 14:39:57,227 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-15 14:39:57,228 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-15 14:39:57,230 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-15 14:39:57,231 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-15 14:39:57,231 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 14:39:57,262 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-15 14:39:57,262 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-15 14:39:57,264 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-15 14:39:57,264 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-15 14:39:57,264 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-15 14:39:57,264 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-15 14:39:57,267 INFO L133 SettingsManager]: * Congruence Domain=false [2018-09-15 14:39:57,267 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-15 14:39:57,267 INFO L133 SettingsManager]: * Octagon Domain=false [2018-09-15 14:39:57,268 INFO L133 SettingsManager]: * Abstract domain=IntervalDomain [2018-09-15 14:39:57,268 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-15 14:39:57,268 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-15 14:39:57,269 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-15 14:39:57,269 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-15 14:39:57,269 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-15 14:39:57,269 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-15 14:39:57,270 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-15 14:39:57,270 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-15 14:39:57,270 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-15 14:39:57,270 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-15 14:39:57,272 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-15 14:39:57,272 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-15 14:39:57,273 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-15 14:39:57,273 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-15 14:39:57,273 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-15 14:39:57,273 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-15 14:39:57,273 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-15 14:39:57,274 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-15 14:39:57,274 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-15 14:39:57,274 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-15 14:39:57,274 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-15 14:39:57,274 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-15 14:39:57,275 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-15 14:39:57,275 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-15 14:39:57,340 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-15 14:39:57,357 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-15 14:39:57,363 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-15 14:39:57,365 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-15 14:39:57,366 INFO L276 PluginConnector]: CDTParser initialized [2018-09-15 14:39:57,366 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label57_true-unreach-call.c [2018-09-15 14:39:57,727 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/195e04f83/434f4ec85e454d5896fcf0cf8066bd53/FLAG3cb3f275d [2018-09-15 14:39:58,194 INFO L277 CDTParser]: Found 1 translation units. [2018-09-15 14:39:58,195 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label57_true-unreach-call.c [2018-09-15 14:39:58,222 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/195e04f83/434f4ec85e454d5896fcf0cf8066bd53/FLAG3cb3f275d [2018-09-15 14:39:58,239 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/195e04f83/434f4ec85e454d5896fcf0cf8066bd53 [2018-09-15 14:39:58,251 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-15 14:39:58,256 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-15 14:39:58,257 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-15 14:39:58,257 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-15 14:39:58,265 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-15 14:39:58,266 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 02:39:58" (1/1) ... [2018-09-15 14:39:58,270 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40c5c827 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:39:58, skipping insertion in model container [2018-09-15 14:39:58,270 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 02:39:58" (1/1) ... [2018-09-15 14:39:58,283 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-15 14:39:59,545 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-15 14:39:59,566 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-15 14:40:00,218 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-15 14:40:00,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:40:00 WrapperNode [2018-09-15 14:40:00,510 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-15 14:40:00,511 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-15 14:40:00,512 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-15 14:40:00,512 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-15 14:40:00,523 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:40:00" (1/1) ... [2018-09-15 14:40:00,629 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:40:00" (1/1) ... [2018-09-15 14:40:00,766 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-15 14:40:00,766 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-15 14:40:00,767 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-15 14:40:00,767 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-15 14:40:01,333 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:40:00" (1/1) ... [2018-09-15 14:40:01,333 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:40:00" (1/1) ... [2018-09-15 14:40:01,373 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:40:00" (1/1) ... [2018-09-15 14:40:01,374 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:40:00" (1/1) ... [2018-09-15 14:40:01,510 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:40:00" (1/1) ... [2018-09-15 14:40:01,546 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:40:00" (1/1) ... [2018-09-15 14:40:01,598 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:40:00" (1/1) ... [2018-09-15 14:40:01,648 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-15 14:40:01,649 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-15 14:40:01,649 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-15 14:40:01,649 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-15 14:40:01,650 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:40:00" (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 14:40:01,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-15 14:40:01,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-15 14:40:01,724 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-09-15 14:40:01,724 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-09-15 14:40:01,725 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-15 14:40:01,725 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-15 14:40:01,725 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-15 14:40:01,725 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-15 14:40:01,725 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-15 14:40:01,726 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-15 14:40:01,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-15 14:40:01,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-15 14:40:01,726 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-15 14:40:01,726 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-15 14:40:13,308 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-15 14:40:13,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 02:40:13 BoogieIcfgContainer [2018-09-15 14:40:13,310 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-15 14:40:13,311 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-15 14:40:13,311 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-15 14:40:13,314 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-15 14:40:13,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 02:39:58" (1/3) ... [2018-09-15 14:40:13,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19b10810 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 02:40:13, skipping insertion in model container [2018-09-15 14:40:13,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:40:00" (2/3) ... [2018-09-15 14:40:13,316 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19b10810 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 02:40:13, skipping insertion in model container [2018-09-15 14:40:13,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 02:40:13" (3/3) ... [2018-09-15 14:40:13,318 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label57_true-unreach-call.c [2018-09-15 14:40:13,328 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-15 14:40:13,337 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-15 14:40:13,397 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-15 14:40:13,398 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-15 14:40:13,398 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-15 14:40:13,398 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-15 14:40:13,398 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-15 14:40:13,399 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-15 14:40:13,399 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-15 14:40:13,399 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-15 14:40:13,399 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-15 14:40:13,443 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-09-15 14:40:13,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-09-15 14:40:13,451 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 14:40:13,453 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 14:40:13,454 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 14:40:13,460 INFO L82 PathProgramCache]: Analyzing trace with hash -937997924, now seen corresponding path program 1 times [2018-09-15 14:40:13,463 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 14:40:13,464 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 45 with the following transitions: [2018-09-15 14:40:13,466 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2059], [2067], [2075], [2083], [2091], [2099], [2107], [2115], [2119], [2121], [3244], [3248], [3254], [3258], [3271], [3272], [3273], [3275] [2018-09-15 14:40:13,507 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2018-09-15 14:40:13,507 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 14:40:15,566 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 14:40:15,570 INFO L272 AbstractInterpreter]: Visited 43 different actions 43 times. Never merged. Never widened. Never found a fixpoint. Largest state had 25 variables. [2018-09-15 14:40:15,629 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 14:40:16,620 INFO L232 lantSequenceWeakener]: Weakened 41 states. On average, predicates are now at 76.94% of their original sizes. [2018-09-15 14:40:16,620 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 14:40:16,857 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 14:40:16,860 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 14:40:16,860 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-15 14:40:16,860 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 14:40:16,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-15 14:40:16,873 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-15 14:40:16,874 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-15 14:40:16,877 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 6 states. [2018-09-15 14:40:27,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 14:40:27,986 INFO L93 Difference]: Finished difference Result 2448 states and 4699 transitions. [2018-09-15 14:40:27,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-15 14:40:27,988 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 44 [2018-09-15 14:40:27,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 14:40:28,031 INFO L225 Difference]: With dead ends: 2448 [2018-09-15 14:40:28,031 INFO L226 Difference]: Without dead ends: 1606 [2018-09-15 14:40:28,044 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 43 GetRequests, 39 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 14:40:28,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1606 states. [2018-09-15 14:40:28,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1606 to 1604. [2018-09-15 14:40:28,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-09-15 14:40:28,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2357 transitions. [2018-09-15 14:40:28,218 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2357 transitions. Word has length 44 [2018-09-15 14:40:28,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 14:40:28,218 INFO L480 AbstractCegarLoop]: Abstraction has 1604 states and 2357 transitions. [2018-09-15 14:40:28,219 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-15 14:40:28,219 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2357 transitions. [2018-09-15 14:40:28,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-09-15 14:40:28,225 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 14:40:28,225 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] [2018-09-15 14:40:28,226 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 14:40:28,226 INFO L82 PathProgramCache]: Analyzing trace with hash -1265468546, now seen corresponding path program 1 times [2018-09-15 14:40:28,226 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 14:40:28,227 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 121 with the following transitions: [2018-09-15 14:40:28,227 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2059], [2067], [2075], [2083], [2091], [2099], [2107], [2115], [2119], [2121], [2124], [2132], [2140], [2148], [2156], [2164], [2172], [2180], [2188], [2196], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2384], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-09-15 14:40:28,232 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2018-09-15 14:40:28,233 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 14:41:45,625 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 14:41:45,625 INFO L272 AbstractInterpreter]: Visited 83 different actions 159 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-09-15 14:41:45,634 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 14:42:23,550 INFO L232 lantSequenceWeakener]: Weakened 117 states. On average, predicates are now at 75.78% of their original sizes. [2018-09-15 14:42:23,550 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 14:42:24,263 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 14:42:24,263 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 14:42:24,263 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-09-15 14:42:24,264 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 14:42:24,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-15 14:42:24,265 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-15 14:42:24,265 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2018-09-15 14:42:24,266 INFO L87 Difference]: Start difference. First operand 1604 states and 2357 transitions. Second operand 11 states. [2018-09-15 14:42:39,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 14:42:39,946 INFO L93 Difference]: Finished difference Result 3976 states and 6980 transitions. [2018-09-15 14:42:39,947 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-15 14:42:39,947 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 120 [2018-09-15 14:42:39,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 14:42:39,962 INFO L225 Difference]: With dead ends: 3976 [2018-09-15 14:42:39,962 INFO L226 Difference]: Without dead ends: 3146 [2018-09-15 14:42:39,967 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 126 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2018-09-15 14:42:39,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3146 states. [2018-09-15 14:42:40,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3146 to 3143. [2018-09-15 14:42:40,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3143 states. [2018-09-15 14:42:40,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3143 states to 3143 states and 3918 transitions. [2018-09-15 14:42:40,051 INFO L78 Accepts]: Start accepts. Automaton has 3143 states and 3918 transitions. Word has length 120 [2018-09-15 14:42:40,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 14:42:40,052 INFO L480 AbstractCegarLoop]: Abstraction has 3143 states and 3918 transitions. [2018-09-15 14:42:40,052 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-15 14:42:40,052 INFO L276 IsEmpty]: Start isEmpty. Operand 3143 states and 3918 transitions. [2018-09-15 14:42:40,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-09-15 14:42:40,057 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 14:42:40,057 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, 1, 1, 1, 1, 1, 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 14:42:40,058 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 14:42:40,058 INFO L82 PathProgramCache]: Analyzing trace with hash 1131498194, now seen corresponding path program 1 times [2018-09-15 14:42:40,058 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 14:42:40,059 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 191 with the following transitions: [2018-09-15 14:42:40,059 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2059], [2067], [2075], [2083], [2091], [2099], [2107], [2115], [2119], [2121], [2124], [2132], [2140], [2148], [2156], [2164], [2172], [2180], [2188], [2196], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2664], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-09-15 14:42:40,065 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2018-09-15 14:42:40,065 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2)