java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label15_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 23:34:55,367 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 23:34:55,370 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 23:34:55,385 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 23:34:55,385 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 23:34:55,388 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 23:34:55,389 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 23:34:55,392 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 23:34:55,394 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 23:34:55,397 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 23:34:55,401 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 23:34:55,401 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 23:34:55,402 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 23:34:55,406 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 23:34:55,411 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 23:34:55,412 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 23:34:55,417 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 23:34:55,421 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 23:34:55,426 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 23:34:55,433 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 23:34:55,435 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 23:34:55,439 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 23:34:55,443 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-23 23:34:55,444 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-23 23:34:55,445 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-23 23:34:55,446 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-23 23:34:55,447 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-23 23:34:55,451 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-23 23:34:55,452 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-23 23:34:55,456 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-23 23:34:55,457 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-23 23:34:55,458 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-23 23:34:55,458 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-23 23:34:55,458 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-23 23:34:55,463 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-23 23:34:55,465 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-23 23:34:55,465 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-23 23:34:55,487 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 23:34:55,487 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 23:34:55,488 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 23:34:55,489 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-23 23:34:55,489 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-23 23:34:55,489 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-23 23:34:55,489 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-23 23:34:55,490 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-23 23:34:55,490 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-23 23:34:55,490 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-23 23:34:55,490 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-23 23:34:55,490 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-23 23:34:55,492 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 23:34:55,492 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 23:34:55,492 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 23:34:55,492 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 23:34:55,492 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 23:34:55,493 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 23:34:55,493 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 23:34:55,493 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 23:34:55,493 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 23:34:55,493 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 23:34:55,493 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 23:34:55,495 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 23:34:55,496 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 23:34:55,496 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 23:34:55,496 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 23:34:55,496 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 23:34:55,496 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-23 23:34:55,497 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 23:34:55,497 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 23:34:55,497 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 23:34:55,497 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 23:34:55,497 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-23 23:34:55,572 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 23:34:55,590 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 23:34:55,594 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 23:34:55,596 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 23:34:55,597 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 23:34:55,598 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label15_true-unreach-call.c [2018-10-23 23:34:55,670 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ea71ccc34/3d785099a5cb4d20b13e209fae4ae74d/FLAG145cd5e5f [2018-10-23 23:34:56,343 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 23:34:56,344 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label15_true-unreach-call.c [2018-10-23 23:34:56,372 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ea71ccc34/3d785099a5cb4d20b13e209fae4ae74d/FLAG145cd5e5f [2018-10-23 23:34:56,398 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ea71ccc34/3d785099a5cb4d20b13e209fae4ae74d [2018-10-23 23:34:56,412 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 23:34:56,415 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 23:34:56,416 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 23:34:56,417 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 23:34:56,422 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 23:34:56,423 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 11:34:56" (1/1) ... [2018-10-23 23:34:56,426 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b7e4d8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:34:56, skipping insertion in model container [2018-10-23 23:34:56,427 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 11:34:56" (1/1) ... [2018-10-23 23:34:56,441 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 23:34:56,544 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 23:34:57,374 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 23:34:57,382 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 23:34:57,653 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 23:34:57,683 INFO L193 MainTranslator]: Completed translation [2018-10-23 23:34:57,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:34:57 WrapperNode [2018-10-23 23:34:57,684 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 23:34:57,686 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 23:34:57,686 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 23:34:57,686 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 23:34:57,698 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:34:57" (1/1) ... [2018-10-23 23:34:57,758 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:34:57" (1/1) ... [2018-10-23 23:34:58,033 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 23:34:58,034 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 23:34:58,034 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 23:34:58,035 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 23:34:58,047 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:34:57" (1/1) ... [2018-10-23 23:34:58,048 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:34:57" (1/1) ... [2018-10-23 23:34:58,060 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:34:57" (1/1) ... [2018-10-23 23:34:58,060 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:34:57" (1/1) ... [2018-10-23 23:34:58,117 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:34:57" (1/1) ... [2018-10-23 23:34:58,136 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:34:57" (1/1) ... [2018-10-23 23:34:58,158 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:34:57" (1/1) ... [2018-10-23 23:34:58,177 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 23:34:58,178 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 23:34:58,178 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 23:34:58,178 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 23:34:58,179 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:34:57" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-23 23:34:58,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-23 23:34:58,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-23 23:34:58,262 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-23 23:34:58,262 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-23 23:34:58,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 23:34:58,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 23:34:58,262 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-23 23:34:58,265 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-23 23:35:03,254 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 23:35:03,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 11:35:03 BoogieIcfgContainer [2018-10-23 23:35:03,256 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 23:35:03,257 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 23:35:03,257 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 23:35:03,264 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 23:35:03,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 11:34:56" (1/3) ... [2018-10-23 23:35:03,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d6d8695 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 11:35:03, skipping insertion in model container [2018-10-23 23:35:03,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:34:57" (2/3) ... [2018-10-23 23:35:03,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d6d8695 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 11:35:03, skipping insertion in model container [2018-10-23 23:35:03,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 11:35:03" (3/3) ... [2018-10-23 23:35:03,270 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label15_true-unreach-call.c [2018-10-23 23:35:03,285 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 23:35:03,306 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 23:35:03,331 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 23:35:03,389 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 23:35:03,390 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 23:35:03,390 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 23:35:03,390 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 23:35:03,390 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 23:35:03,390 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 23:35:03,391 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 23:35:03,391 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 23:35:03,427 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-10-23 23:35:03,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2018-10-23 23:35:03,459 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:35:03,461 INFO L375 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 23:35:03,464 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:35:03,470 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:35:03,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1930807004, now seen corresponding path program 1 times [2018-10-23 23:35:03,473 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:35:03,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:35:03,522 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:35:03,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:35:03,523 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:35:03,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:35:04,576 WARN L179 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 23:35:04,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:35:04,791 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:35:04,791 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 23:35:04,792 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:35:04,799 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 23:35:04,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 23:35:04,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 23:35:04,816 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 3 states. [2018-10-23 23:35:06,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:35:06,749 INFO L93 Difference]: Finished difference Result 838 states and 1479 transitions. [2018-10-23 23:35:06,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 23:35:06,751 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 207 [2018-10-23 23:35:06,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:35:06,774 INFO L225 Difference]: With dead ends: 838 [2018-10-23 23:35:06,774 INFO L226 Difference]: Without dead ends: 524 [2018-10-23 23:35:06,782 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 23:35:06,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2018-10-23 23:35:06,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 522. [2018-10-23 23:35:06,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 522 states. [2018-10-23 23:35:06,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 890 transitions. [2018-10-23 23:35:06,876 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 890 transitions. Word has length 207 [2018-10-23 23:35:06,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:35:06,877 INFO L481 AbstractCegarLoop]: Abstraction has 522 states and 890 transitions. [2018-10-23 23:35:06,877 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 23:35:06,878 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 890 transitions. [2018-10-23 23:35:06,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2018-10-23 23:35:06,887 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:35:06,887 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 23:35:06,888 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:35:06,888 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:35:06,889 INFO L82 PathProgramCache]: Analyzing trace with hash 1700452501, now seen corresponding path program 1 times [2018-10-23 23:35:06,889 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:35:06,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:35:06,890 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:35:06,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:35:06,891 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:35:06,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:35:07,233 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-10-23 23:35:07,404 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:35:07,404 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:35:07,405 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 23:35:07,405 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:35:07,407 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 23:35:07,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 23:35:07,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 23:35:07,408 INFO L87 Difference]: Start difference. First operand 522 states and 890 transitions. Second operand 6 states. [2018-10-23 23:35:11,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:35:11,465 INFO L93 Difference]: Finished difference Result 1581 states and 2759 transitions. [2018-10-23 23:35:11,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-23 23:35:11,469 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 217 [2018-10-23 23:35:11,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:35:11,484 INFO L225 Difference]: With dead ends: 1581 [2018-10-23 23:35:11,484 INFO L226 Difference]: Without dead ends: 1065 [2018-10-23 23:35:11,490 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-23 23:35:11,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2018-10-23 23:35:11,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 1023. [2018-10-23 23:35:11,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1023 states. [2018-10-23 23:35:11,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 1733 transitions. [2018-10-23 23:35:11,569 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 1733 transitions. Word has length 217 [2018-10-23 23:35:11,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:35:11,569 INFO L481 AbstractCegarLoop]: Abstraction has 1023 states and 1733 transitions. [2018-10-23 23:35:11,569 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 23:35:11,569 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 1733 transitions. [2018-10-23 23:35:11,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-10-23 23:35:11,577 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:35:11,577 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 23:35:11,578 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:35:11,578 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:35:11,578 INFO L82 PathProgramCache]: Analyzing trace with hash -673913640, now seen corresponding path program 1 times [2018-10-23 23:35:11,579 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:35:11,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:35:11,580 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:35:11,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:35:11,581 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:35:11,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:35:11,972 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:35:11,973 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:35:11,973 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 23:35:11,973 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:35:11,974 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 23:35:11,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 23:35:11,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 23:35:11,975 INFO L87 Difference]: Start difference. First operand 1023 states and 1733 transitions. Second operand 3 states. [2018-10-23 23:35:14,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:35:14,692 INFO L93 Difference]: Finished difference Result 2887 states and 5065 transitions. [2018-10-23 23:35:14,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 23:35:14,699 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 220 [2018-10-23 23:35:14,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:35:14,715 INFO L225 Difference]: With dead ends: 2887 [2018-10-23 23:35:14,716 INFO L226 Difference]: Without dead ends: 1870 [2018-10-23 23:35:14,723 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 23:35:14,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1870 states. [2018-10-23 23:35:14,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1870 to 1869. [2018-10-23 23:35:14,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1869 states. [2018-10-23 23:35:14,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1869 states to 1869 states and 2999 transitions. [2018-10-23 23:35:14,808 INFO L78 Accepts]: Start accepts. Automaton has 1869 states and 2999 transitions. Word has length 220 [2018-10-23 23:35:14,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:35:14,809 INFO L481 AbstractCegarLoop]: Abstraction has 1869 states and 2999 transitions. [2018-10-23 23:35:14,809 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 23:35:14,810 INFO L276 IsEmpty]: Start isEmpty. Operand 1869 states and 2999 transitions. [2018-10-23 23:35:14,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-10-23 23:35:14,820 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:35:14,820 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 23:35:14,820 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:35:14,821 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:35:14,821 INFO L82 PathProgramCache]: Analyzing trace with hash -768110724, now seen corresponding path program 1 times [2018-10-23 23:35:14,821 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:35:14,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:35:14,823 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:35:14,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:35:14,823 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:35:14,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:35:15,321 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:35:15,322 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:35:15,322 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 23:35:15,322 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:35:15,323 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 23:35:15,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 23:35:15,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 23:35:15,325 INFO L87 Difference]: Start difference. First operand 1869 states and 2999 transitions. Second operand 4 states. [2018-10-23 23:35:17,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:35:17,858 INFO L93 Difference]: Finished difference Result 7160 states and 12067 transitions. [2018-10-23 23:35:17,859 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 23:35:17,859 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 222 [2018-10-23 23:35:17,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:35:17,904 INFO L225 Difference]: With dead ends: 7160 [2018-10-23 23:35:17,904 INFO L226 Difference]: Without dead ends: 5297 [2018-10-23 23:35:17,918 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 23:35:17,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5297 states. [2018-10-23 23:35:18,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5297 to 5291. [2018-10-23 23:35:18,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5291 states. [2018-10-23 23:35:18,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5291 states to 5291 states and 8112 transitions. [2018-10-23 23:35:18,092 INFO L78 Accepts]: Start accepts. Automaton has 5291 states and 8112 transitions. Word has length 222 [2018-10-23 23:35:18,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:35:18,093 INFO L481 AbstractCegarLoop]: Abstraction has 5291 states and 8112 transitions. [2018-10-23 23:35:18,093 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 23:35:18,093 INFO L276 IsEmpty]: Start isEmpty. Operand 5291 states and 8112 transitions. [2018-10-23 23:35:18,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-10-23 23:35:18,120 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:35:18,121 INFO L375 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 23:35:18,121 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:35:18,122 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:35:18,122 INFO L82 PathProgramCache]: Analyzing trace with hash 1656628327, now seen corresponding path program 1 times [2018-10-23 23:35:18,122 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:35:18,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:35:18,124 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:35:18,124 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:35:18,124 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:35:18,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:35:18,564 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-10-23 23:35:18,885 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-10-23 23:35:19,280 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:35:19,281 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 23:35:19,281 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 23:35:19,282 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 241 with the following transitions: [2018-10-23 23:35:19,285 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [115], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1081], [1089], [1097], [1105], [1113], [1117], [1119], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-23 23:35:19,405 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 23:35:19,405 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-10-23 23:39:28,760 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-10-23 23:39:28,761 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-10-23 23:39:28,763 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-23 23:39:28,763 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 23:39:28,763 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 23:39:28,774 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:39:28,774 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-23 23:39:28,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:39:28,993 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 23:39:29,031 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-23 23:39:29,233 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 23:39:29,233 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 23:39:29,239 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 23:39:29,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 11:39:29 BoogieIcfgContainer [2018-10-23 23:39:29,240 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 23:39:29,240 INFO L168 Benchmark]: Toolchain (without parser) took 272826.64 ms. Allocated memory was 1.5 GB in the beginning and 2.8 GB in the end (delta: 1.3 GB). Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: -60.4 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-10-23 23:39:29,242 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 23:39:29,242 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1268.46 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 76.6 MB). Peak memory consumption was 76.6 MB. Max. memory is 7.1 GB. [2018-10-23 23:39:29,243 INFO L168 Benchmark]: Boogie Procedure Inliner took 348.33 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 727.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -851.1 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. [2018-10-23 23:39:29,244 INFO L168 Benchmark]: Boogie Preprocessor took 142.88 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 28.6 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. [2018-10-23 23:39:29,245 INFO L168 Benchmark]: RCFGBuilder took 5078.35 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 255.2 MB). Peak memory consumption was 255.2 MB. Max. memory is 7.1 GB. [2018-10-23 23:39:29,245 INFO L168 Benchmark]: TraceAbstraction took 265982.54 ms. Allocated memory was 2.2 GB in the beginning and 2.8 GB in the end (delta: 544.2 MB). Free memory was 1.9 GB in the beginning and 1.4 GB in the end (delta: 430.3 MB). Peak memory consumption was 974.5 MB. Max. memory is 7.1 GB. [2018-10-23 23:39:29,251 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1268.46 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 76.6 MB). Peak memory consumption was 76.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 348.33 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 727.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -851.1 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 142.88 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 28.6 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5078.35 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 255.2 MB). Peak memory consumption was 255.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 265982.54 ms. Allocated memory was 2.2 GB in the beginning and 2.8 GB in the end (delta: 544.2 MB). Free memory was 1.9 GB in the beginning and 1.4 GB in the end (delta: 430.3 MB). Peak memory consumption was 974.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1635]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1635). Cancelled while BasicCegarLoop was analyzing trace of length 241 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 7 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 265.8s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 11.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1117 SDtfs, 1779 SDslu, 601 SDs, 0 SdLazy, 4011 SolverSat, 772 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 9.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5291occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 249.4s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 4 MinimizatonAttempts, 51 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 866 NumberOfCodeBlocks, 866 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 862 ConstructedInterpolants, 0 QuantifiedInterpolants, 544496 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 29/29 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown