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 -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem04_label59_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 17:36:43,432 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 17:36:43,434 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 17:36:43,452 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 17:36:43,453 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 17:36:43,454 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 17:36:43,455 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 17:36:43,457 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 17:36:43,459 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 17:36:43,459 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 17:36:43,460 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 17:36:43,461 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 17:36:43,462 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 17:36:43,463 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 17:36:43,464 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 17:36:43,465 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 17:36:43,465 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 17:36:43,467 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 17:36:43,470 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 17:36:43,471 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 17:36:43,473 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 17:36:43,474 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 17:36:43,476 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 17:36:43,477 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 17:36:43,477 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 17:36:43,478 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 17:36:43,479 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 17:36:43,480 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 17:36:43,481 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 17:36:43,482 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 17:36:43,482 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 17:36:43,483 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 17:36:43,483 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 17:36:43,484 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 17:36:43,485 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 17:36:43,486 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 17:36:43,486 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-12 17:36:43,502 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 17:36:43,502 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 17:36:43,503 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 17:36:43,504 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 17:36:43,504 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 17:36:43,504 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 17:36:43,504 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 17:36:43,505 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 17:36:43,505 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 17:36:43,505 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 17:36:43,505 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 17:36:43,505 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 17:36:43,506 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 17:36:43,507 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 17:36:43,507 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 17:36:43,507 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 17:36:43,507 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 17:36:43,508 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 17:36:43,508 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 17:36:43,508 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 17:36:43,508 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 17:36:43,508 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 17:36:43,509 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 17:36:43,510 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 17:36:43,510 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 17:36:43,511 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 17:36:43,511 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 17:36:43,511 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 17:36:43,511 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 17:36:43,511 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 17:36:43,512 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 17:36:43,512 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 17:36:43,512 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 17:36:43,512 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 17:36:43,512 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 17:36:43,569 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 17:36:43,581 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 17:36:43,584 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 17:36:43,585 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 17:36:43,586 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 17:36:43,586 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label59_true-unreach-call.c [2018-11-12 17:36:43,654 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/549d33565/8d2ef97e6110415d96d1c446e1e6e61d/FLAGd9da01c0e [2018-11-12 17:36:44,412 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 17:36:44,413 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label59_true-unreach-call.c [2018-11-12 17:36:44,443 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/549d33565/8d2ef97e6110415d96d1c446e1e6e61d/FLAGd9da01c0e [2018-11-12 17:36:44,463 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/549d33565/8d2ef97e6110415d96d1c446e1e6e61d [2018-11-12 17:36:44,476 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 17:36:44,478 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 17:36:44,480 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 17:36:44,480 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 17:36:44,486 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 17:36:44,488 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 05:36:44" (1/1) ... [2018-11-12 17:36:44,492 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52d35b15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:36:44, skipping insertion in model container [2018-11-12 17:36:44,492 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 05:36:44" (1/1) ... [2018-11-12 17:36:44,504 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 17:36:44,675 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 17:36:46,125 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 17:36:46,130 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 17:36:46,806 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 17:36:46,840 INFO L193 MainTranslator]: Completed translation [2018-11-12 17:36:46,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:36:46 WrapperNode [2018-11-12 17:36:46,841 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 17:36:46,842 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 17:36:46,843 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 17:36:46,843 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 17:36:46,853 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:36:46" (1/1) ... [2018-11-12 17:36:47,170 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:36:46" (1/1) ... [2018-11-12 17:36:47,183 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 17:36:47,184 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 17:36:47,184 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 17:36:47,185 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 17:36:47,197 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:36:46" (1/1) ... [2018-11-12 17:36:47,197 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:36:46" (1/1) ... [2018-11-12 17:36:47,221 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:36:46" (1/1) ... [2018-11-12 17:36:47,222 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:36:46" (1/1) ... [2018-11-12 17:36:47,351 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:36:46" (1/1) ... [2018-11-12 17:36:47,395 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:36:46" (1/1) ... [2018-11-12 17:36:47,436 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:36:46" (1/1) ... [2018-11-12 17:36:47,475 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 17:36:47,475 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 17:36:47,476 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 17:36:47,476 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 17:36:47,477 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:36:46" (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 [2018-11-12 17:36:47,548 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 17:36:47,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 17:36:47,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 17:36:47,550 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-12 17:36:47,550 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-12 17:36:47,550 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-12 17:36:47,551 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-12 17:36:47,551 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-12 17:36:47,551 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-12 17:36:47,551 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 17:36:47,552 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 17:36:47,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 17:36:47,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 17:36:47,553 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 17:36:47,553 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 17:36:57,648 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 17:36:57,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 05:36:57 BoogieIcfgContainer [2018-11-12 17:36:57,649 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 17:36:57,649 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 17:36:57,650 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 17:36:57,653 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 17:36:57,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 05:36:44" (1/3) ... [2018-11-12 17:36:57,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73eb59d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 05:36:57, skipping insertion in model container [2018-11-12 17:36:57,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:36:46" (2/3) ... [2018-11-12 17:36:57,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73eb59d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 05:36:57, skipping insertion in model container [2018-11-12 17:36:57,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 05:36:57" (3/3) ... [2018-11-12 17:36:57,656 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem04_label59_true-unreach-call.c [2018-11-12 17:36:57,667 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 17:36:57,676 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 17:36:57,693 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 17:36:57,738 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 17:36:57,738 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 17:36:57,739 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 17:36:57,739 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 17:36:57,739 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 17:36:57,739 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 17:36:57,739 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 17:36:57,739 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 17:36:57,779 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states. [2018-11-12 17:36:57,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 804 [2018-11-12 17:36:57,828 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:36:57,830 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 17:36:57,832 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:36:57,838 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:36:57,839 INFO L82 PathProgramCache]: Analyzing trace with hash -1070784089, now seen corresponding path program 1 times [2018-11-12 17:36:57,842 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:36:57,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:36:57,894 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:36:57,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:36:57,894 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:36:58,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:36:59,636 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 17:37:00,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:37:00,411 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 17:37:00,411 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 17:37:00,411 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:37:00,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 17:37:00,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 17:37:00,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 17:37:00,434 INFO L87 Difference]: Start difference. First operand 907 states. Second operand 3 states. [2018-11-12 17:37:07,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:37:07,181 INFO L93 Difference]: Finished difference Result 2647 states and 5102 transitions. [2018-11-12 17:37:07,185 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 17:37:07,186 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 803 [2018-11-12 17:37:07,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:37:07,237 INFO L225 Difference]: With dead ends: 2647 [2018-11-12 17:37:07,237 INFO L226 Difference]: Without dead ends: 1738 [2018-11-12 17:37:07,252 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 17:37:07,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1738 states. [2018-11-12 17:37:07,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1738 to 1738. [2018-11-12 17:37:07,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1738 states. [2018-11-12 17:37:07,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1738 states to 1738 states and 3286 transitions. [2018-11-12 17:37:07,422 INFO L78 Accepts]: Start accepts. Automaton has 1738 states and 3286 transitions. Word has length 803 [2018-11-12 17:37:07,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:37:07,429 INFO L480 AbstractCegarLoop]: Abstraction has 1738 states and 3286 transitions. [2018-11-12 17:37:07,429 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 17:37:07,429 INFO L276 IsEmpty]: Start isEmpty. Operand 1738 states and 3286 transitions. [2018-11-12 17:37:07,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 813 [2018-11-12 17:37:07,464 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:37:07,465 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 17:37:07,466 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:37:07,466 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:37:07,467 INFO L82 PathProgramCache]: Analyzing trace with hash 1518425832, now seen corresponding path program 1 times [2018-11-12 17:37:07,467 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:37:07,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:37:07,469 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:37:07,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:37:07,469 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:37:07,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:37:09,155 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:37:09,156 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 17:37:09,156 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 17:37:09,157 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:37:09,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 17:37:09,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 17:37:09,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 17:37:09,161 INFO L87 Difference]: Start difference. First operand 1738 states and 3286 transitions. Second operand 4 states. [2018-11-12 17:37:18,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:37:18,903 INFO L93 Difference]: Finished difference Result 6810 states and 13144 transitions. [2018-11-12 17:37:18,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 17:37:18,903 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 812 [2018-11-12 17:37:18,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:37:18,934 INFO L225 Difference]: With dead ends: 6810 [2018-11-12 17:37:18,934 INFO L226 Difference]: Without dead ends: 5078 [2018-11-12 17:37:18,942 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 17:37:18,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5078 states. [2018-11-12 17:37:19,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5078 to 5078. [2018-11-12 17:37:19,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5078 states. [2018-11-12 17:37:19,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5078 states to 5078 states and 8456 transitions. [2018-11-12 17:37:19,085 INFO L78 Accepts]: Start accepts. Automaton has 5078 states and 8456 transitions. Word has length 812 [2018-11-12 17:37:19,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:37:19,086 INFO L480 AbstractCegarLoop]: Abstraction has 5078 states and 8456 transitions. [2018-11-12 17:37:19,087 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 17:37:19,087 INFO L276 IsEmpty]: Start isEmpty. Operand 5078 states and 8456 transitions. [2018-11-12 17:37:19,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 831 [2018-11-12 17:37:19,107 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:37:19,108 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 17:37:19,109 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:37:19,109 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:37:19,110 INFO L82 PathProgramCache]: Analyzing trace with hash -1587344372, now seen corresponding path program 1 times [2018-11-12 17:37:19,110 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:37:19,111 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:37:19,111 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:37:19,111 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:37:19,111 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:37:19,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:37:20,357 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:37:20,358 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:37:20,358 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 17:37:20,360 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 831 with the following transitions: [2018-11-12 17:37:20,370 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [30], [34], [38], [42], [46], [50], [54], [58], [62], [66], [70], [74], [78], [82], [86], [90], [94], [98], [102], [106], [110], [114], [118], [122], [126], [130], [134], [138], [142], [146], [150], [154], [158], [162], [166], [170], [174], [178], [182], [186], [190], [194], [198], [202], [206], [210], [214], [218], [222], [226], [230], [234], [238], [242], [246], [250], [254], [258], [262], [266], [270], [274], [278], [282], [286], [290], [294], [298], [302], [306], [310], [314], [318], [322], [326], [330], [334], [338], [342], [346], [350], [354], [358], [362], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [537], [545], [553], [561], [569], [577], [585], [593], [601], [609], [617], [625], [633], [637], [639], [854], [858], [862], [866], [870], [874], [878], [882], [886], [890], [894], [898], [902], [906], [910], [914], [918], [922], [926], [930], [934], [938], [942], [946], [950], [954], [958], [962], [966], [970], [974], [978], [982], [986], [990], [994], [998], [1002], [1006], [1010], [1014], [1018], [1022], [1026], [1030], [1034], [1038], [1042], [1046], [1050], [1054], [1058], [1062], [1066], [1070], [1074], [1078], [1082], [1086], [1090], [1094], [1098], [1102], [1106], [1110], [1114], [1118], [1122], [1126], [1130], [1134], [1138], [1142], [1146], [1150], [1154], [1158], [1162], [1166], [1170], [1174], [1178], [1182], [1186], [1190], [1194], [1198], [1202], [1206], [1210], [1214], [1218], [1222], [1226], [1230], [1234], [1238], [1242], [1246], [1250], [1254], [1258], [1262], [1266], [1270], [1274], [1278], [1282], [1286], [1290], [1294], [1298], [1302], [1306], [1310], [1314], [1318], [1322], [1326], [1330], [1334], [1338], [1342], [1346], [1350], [1354], [1358], [1362], [1366], [1370], [1374], [1378], [1382], [1386], [1390], [1394], [1398], [1402], [1406], [1410], [1414], [1418], [1422], [1426], [1430], [1434], [1438], [1442], [1446], [1450], [1454], [1458], [1462], [1466], [1470], [1474], [1478], [1482], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1562], [1566], [1570], [1574], [1578], [1582], [1586], [1590], [1594], [1598], [1602], [1606], [1610], [1614], [1618], [1622], [1626], [1630], [1634], [1638], [1642], [1646], [1650], [1654], [1658], [1662], [1666], [1670], [1674], [1678], [1682], [1686], [1690], [1694], [1698], [1702], [1706], [1710], [1714], [1718], [1722], [1726], [1730], [1734], [1738], [1742], [1746], [1750], [1754], [1758], [1762], [1766], [1770], [1774], [1778], [1782], [1786], [1790], [1794], [1798], [1802], [1806], [1810], [1814], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1926], [1930], [1934], [1938], [1942], [1946], [1950], [1954], [1958], [1962], [1966], [1970], [1974], [1978], [1982], [1986], [1990], [1994], [1998], [2002], [2006], [2010], [2014], [2018], [2022], [2026], [2030], [2034], [2038], [2042], [2046], [2050], [2054], [2058], [2062], [2066], [2070], [2074], [2078], [2082], [2086], [2090], [2094], [2098], [2102], [2106], [2110], [2114], [2118], [2122], [2126], [2130], [2134], [2138], [2142], [2146], [2150], [2154], [2158], [2162], [2166], [2170], [2174], [2178], [2182], [2186], [2190], [2194], [2198], [2202], [2206], [2210], [2214], [2218], [2222], [2226], [2230], [2234], [2238], [2242], [2246], [2250], [2254], [2258], [2262], [2266], [2270], [2274], [2278], [2282], [2286], [2290], [2294], [2298], [2302], [2306], [2310], [2314], [2318], [2322], [2326], [2330], [2334], [2338], [2342], [2346], [2350], [2354], [2358], [2362], [2366], [2370], [2374], [2378], [2382], [2386], [2390], [2394], [2398], [2402], [2406], [2410], [2414], [2418], [2422], [2426], [2430], [2434], [2438], [2442], [2446], [2450], [2454], [2458], [2462], [2466], [2470], [2474], [2478], [2482], [2486], [2490], [2494], [2498], [2502], [2506], [2510], [2514], [2518], [2522], [2526], [2530], [2534], [2538], [2542], [2546], [2550], [2554], [2558], [2562], [2566], [2570], [2574], [2578], [2582], [2586], [2590], [2594], [2598], [2602], [2606], [2610], [2614], [2618], [2622], [2626], [2630], [2634], [2638], [2642], [2646], [2650], [2654], [2658], [2662], [2666], [2670], [2674], [2678], [2682], [2686], [2690], [2694], [2697], [2698], [2702], [2706], [2710], [2714], [2718], [2722], [2726], [2730], [2734], [2738], [2742], [2746], [2750], [2754], [2758], [2762], [2766], [2770], [2774], [2778], [2782], [2786], [2790], [2794], [2798], [2802], [2806], [2810], [2814], [2818], [2822], [2826], [2830], [2834], [2838], [2842], [2846], [2850], [2854], [2858], [2862], [2866], [2870], [2874], [2878], [2882], [2886], [2890], [2894], [2898], [2902], [2906], [2910], [2914], [2918], [2922], [2926], [2930], [2934], [2938], [2942], [2946], [2950], [2954], [2958], [2962], [2966], [2970], [2974], [2978], [2982], [2986], [2990], [2994], [2998], [3002], [3006], [3010], [3014], [3018], [3022], [3026], [3030], [3034], [3038], [3042], [3046], [3050], [3054], [3058], [3062], [3066], [3070], [3074], [3078], [3082], [3086], [3090], [3094], [3098], [3102], [3106], [3110], [3114], [3118], [3122], [3126], [3130], [3134], [3138], [3142], [3146], [3150], [3154], [3158], [3162], [3166], [3170], [3174], [3178], [3182], [3186], [3190], [3194], [3198], [3202], [3206], [3210], [3214], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3298], [3302], [3306], [3310], [3314], [3318], [3322], [3326], [3330], [3334], [3338], [3342], [3346], [3350], [3354], [3358], [3362], [3366], [3370], [3374], [3378], [3382], [3386], [3390], [3394], [3398], [3402], [3406], [3410], [3414], [3418], [3422], [3426], [3430], [3434], [3438], [3442], [3446], [3450], [3454], [3458], [3462], [3466], [3470], [3474], [3478], [3482], [3486], [3490], [3494], [3498], [3502], [3505], [3509], [3513], [3519], [3523], [3525], [3530], [3532], [3534], [3536], [3537], [3538], [3540], [3541] [2018-11-12 17:37:20,500 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 17:37:20,500 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 17:37:29,131 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 17:37:29,133 INFO L272 AbstractInterpreter]: Visited 807 different actions 1609 times. Merged at 5 different actions 7 times. Never widened. Performed 27664 root evaluator evaluations with a maximum evaluation depth of 6. Performed 27664 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 44 variables. [2018-11-12 17:37:29,162 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:37:29,163 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 17:37:29,163 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:37:29,163 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-12 17:37:29,384 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:37:29,384 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 17:37:29,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:37:29,706 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 17:37:30,427 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:37:30,428 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 17:37:31,713 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:37:31,735 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-12 17:37:31,736 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-11-12 17:37:31,736 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:37:31,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 17:37:31,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 17:37:31,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-11-12 17:37:31,738 INFO L87 Difference]: Start difference. First operand 5078 states and 8456 transitions. Second operand 3 states. [2018-11-12 17:37:38,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:37:38,109 INFO L93 Difference]: Finished difference Result 15190 states and 25723 transitions. [2018-11-12 17:37:38,112 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 17:37:38,112 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 830 [2018-11-12 17:37:38,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:37:38,172 INFO L225 Difference]: With dead ends: 15190 [2018-11-12 17:37:38,173 INFO L226 Difference]: Without dead ends: 10118 [2018-11-12 17:37:38,191 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1671 GetRequests, 1660 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-11-12 17:37:38,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10118 states. [2018-11-12 17:37:38,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10118 to 10118. [2018-11-12 17:37:38,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10118 states. [2018-11-12 17:37:38,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10118 states to 10118 states and 16263 transitions. [2018-11-12 17:37:38,442 INFO L78 Accepts]: Start accepts. Automaton has 10118 states and 16263 transitions. Word has length 830 [2018-11-12 17:37:38,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:37:38,444 INFO L480 AbstractCegarLoop]: Abstraction has 10118 states and 16263 transitions. [2018-11-12 17:37:38,444 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 17:37:38,444 INFO L276 IsEmpty]: Start isEmpty. Operand 10118 states and 16263 transitions. [2018-11-12 17:37:38,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 855 [2018-11-12 17:37:38,482 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:37:38,482 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 17:37:38,483 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:37:38,483 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:37:38,484 INFO L82 PathProgramCache]: Analyzing trace with hash 246483004, now seen corresponding path program 1 times [2018-11-12 17:37:38,484 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:37:38,485 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:37:38,485 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:37:38,485 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:37:38,486 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:37:38,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:37:38,819 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 17:37:39,675 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:37:39,675 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 17:37:39,676 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 17:37:39,676 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:37:39,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 17:37:39,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 17:37:39,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 17:37:39,677 INFO L87 Difference]: Start difference. First operand 10118 states and 16263 transitions. Second operand 6 states. [2018-11-12 17:37:47,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:37:47,901 INFO L93 Difference]: Finished difference Result 30686 states and 51550 transitions. [2018-11-12 17:37:47,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 17:37:47,908 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 854 [2018-11-12 17:37:47,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:37:48,042 INFO L225 Difference]: With dead ends: 30686 [2018-11-12 17:37:48,043 INFO L226 Difference]: Without dead ends: 20574 [2018-11-12 17:37:48,078 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 17:37:48,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20574 states. [2018-11-12 17:37:48,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20574 to 20490. [2018-11-12 17:37:48,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20490 states. [2018-11-12 17:37:48,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20490 states to 20490 states and 31961 transitions. [2018-11-12 17:37:48,648 INFO L78 Accepts]: Start accepts. Automaton has 20490 states and 31961 transitions. Word has length 854 [2018-11-12 17:37:48,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:37:48,649 INFO L480 AbstractCegarLoop]: Abstraction has 20490 states and 31961 transitions. [2018-11-12 17:37:48,649 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 17:37:48,649 INFO L276 IsEmpty]: Start isEmpty. Operand 20490 states and 31961 transitions. [2018-11-12 17:37:48,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 887 [2018-11-12 17:37:48,721 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:37:48,722 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 17:37:48,723 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:37:48,723 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:37:48,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1354434887, now seen corresponding path program 1 times [2018-11-12 17:37:48,724 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:37:48,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:37:48,724 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:37:48,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:37:48,725 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:37:48,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:37:49,059 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-11-12 17:37:50,071 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 77 proven. 27 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 17:37:50,071 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:37:50,071 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 17:37:50,072 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 887 with the following transitions: [2018-11-12 17:37:50,074 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [30], [34], [38], [42], [46], [50], [54], [58], [62], [66], [70], [74], [78], [82], [86], [90], [94], [98], [102], [106], [110], [114], [118], [122], [126], [130], [134], [138], [142], [146], [150], [154], [158], [162], [166], [170], [174], [178], [182], [186], [190], [194], [198], [202], [206], [210], [214], [218], [222], [226], [230], [234], [238], [242], [246], [250], [254], [258], [262], [266], [270], [274], [278], [282], [286], [290], [294], [298], [302], [306], [310], [314], [318], [322], [326], [330], [334], [338], [342], [346], [350], [354], [358], [362], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [537], [545], [553], [561], [569], [577], [585], [593], [601], [609], [617], [625], [633], [637], [639], [854], [858], [862], [866], [870], [874], [878], [882], [886], [890], [894], [898], [902], [906], [910], [914], [918], [922], [926], [930], [934], [938], [942], [946], [950], [954], [958], [962], [966], [970], [974], [978], [982], [986], [990], [994], [998], [1002], [1006], [1010], [1014], [1018], [1022], [1026], [1030], [1034], [1038], [1042], [1046], [1050], [1054], [1058], [1062], [1066], [1070], [1074], [1078], [1082], [1086], [1090], [1094], [1098], [1102], [1106], [1110], [1114], [1118], [1122], [1126], [1130], [1134], [1138], [1142], [1146], [1150], [1154], [1158], [1162], [1166], [1170], [1174], [1178], [1182], [1186], [1190], [1194], [1198], [1202], [1206], [1210], [1214], [1218], [1222], [1226], [1230], [1234], [1238], [1242], [1246], [1250], [1254], [1258], [1262], [1266], [1270], [1274], [1278], [1282], [1286], [1290], [1294], [1298], [1302], [1306], [1310], [1314], [1318], [1322], [1326], [1330], [1334], [1338], [1342], [1346], [1350], [1354], [1358], [1362], [1366], [1370], [1374], [1378], [1382], [1386], [1390], [1394], [1398], [1402], [1406], [1410], [1414], [1418], [1422], [1426], [1430], [1434], [1438], [1442], [1446], [1450], [1454], [1458], [1462], [1466], [1470], [1474], [1478], [1482], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1562], [1566], [1570], [1574], [1578], [1582], [1586], [1590], [1594], [1598], [1602], [1606], [1610], [1614], [1618], [1622], [1626], [1630], [1634], [1638], [1642], [1646], [1650], [1654], [1658], [1662], [1666], [1670], [1674], [1678], [1682], [1686], [1690], [1694], [1698], [1702], [1706], [1710], [1714], [1718], [1722], [1726], [1730], [1734], [1738], [1742], [1746], [1750], [1754], [1758], [1762], [1766], [1770], [1774], [1778], [1782], [1786], [1790], [1794], [1798], [1802], [1806], [1810], [1814], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1926], [1930], [1934], [1938], [1942], [1946], [1950], [1954], [1958], [1962], [1966], [1970], [1974], [1978], [1982], [1986], [1990], [1994], [1998], [2002], [2006], [2010], [2014], [2018], [2022], [2026], [2030], [2034], [2038], [2042], [2046], [2050], [2054], [2058], [2062], [2066], [2070], [2074], [2078], [2082], [2086], [2090], [2094], [2098], [2102], [2106], [2110], [2114], [2118], [2122], [2126], [2130], [2134], [2138], [2142], [2146], [2150], [2154], [2158], [2162], [2166], [2170], [2174], [2178], [2182], [2186], [2190], [2194], [2198], [2202], [2206], [2210], [2214], [2218], [2222], [2226], [2230], [2234], [2238], [2242], [2246], [2250], [2254], [2258], [2262], [2266], [2270], [2274], [2278], [2282], [2286], [2290], [2294], [2298], [2302], [2306], [2310], [2314], [2318], [2322], [2326], [2330], [2334], [2338], [2342], [2346], [2350], [2354], [2358], [2362], [2366], [2370], [2374], [2378], [2382], [2386], [2390], [2394], [2398], [2402], [2406], [2410], [2414], [2418], [2422], [2426], [2430], [2434], [2438], [2442], [2446], [2450], [2454], [2458], [2462], [2466], [2470], [2474], [2478], [2482], [2486], [2490], [2494], [2498], [2502], [2506], [2510], [2514], [2518], [2522], [2526], [2530], [2534], [2538], [2542], [2546], [2550], [2554], [2558], [2562], [2566], [2570], [2574], [2578], [2582], [2586], [2590], [2594], [2598], [2602], [2606], [2610], [2614], [2618], [2622], [2626], [2630], [2634], [2638], [2642], [2646], [2650], [2654], [2658], [2662], [2666], [2670], [2674], [2678], [2682], [2686], [2690], [2694], [2698], [2702], [2706], [2710], [2714], [2717], [2718], [2722], [2726], [2730], [2734], [2738], [2742], [2746], [2750], [2754], [2758], [2762], [2766], [2770], [2774], [2778], [2782], [2786], [2790], [2793], [2794], [2798], [2802], [2806], [2810], [2814], [2818], [2822], [2826], [2830], [2834], [2838], [2842], [2846], [2850], [2854], [2858], [2862], [2866], [2870], [2874], [2878], [2882], [2886], [2890], [2894], [2898], [2902], [2906], [2910], [2914], [2918], [2922], [2926], [2930], [2934], [2938], [2942], [2946], [2950], [2954], [2958], [2962], [2966], [2970], [2974], [2978], [2982], [2986], [2990], [2994], [2998], [3002], [3006], [3010], [3014], [3018], [3022], [3026], [3030], [3034], [3038], [3042], [3046], [3050], [3054], [3058], [3062], [3066], [3070], [3074], [3078], [3082], [3086], [3090], [3094], [3098], [3102], [3106], [3110], [3114], [3118], [3122], [3126], [3130], [3134], [3138], [3142], [3146], [3150], [3154], [3158], [3162], [3166], [3170], [3174], [3178], [3182], [3186], [3190], [3194], [3198], [3202], [3206], [3210], [3214], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3298], [3302], [3306], [3310], [3314], [3318], [3322], [3326], [3330], [3334], [3338], [3342], [3346], [3350], [3354], [3358], [3362], [3366], [3370], [3374], [3378], [3382], [3386], [3390], [3394], [3398], [3402], [3406], [3410], [3414], [3418], [3422], [3426], [3430], [3434], [3438], [3442], [3446], [3450], [3454], [3458], [3462], [3466], [3470], [3474], [3478], [3482], [3486], [3490], [3494], [3498], [3502], [3505], [3509], [3513], [3519], [3523], [3525], [3530], [3532], [3534], [3536], [3537], [3538], [3540], [3541] [2018-11-12 17:37:50,091 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 17:37:50,091 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 17:37:52,288 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 17:37:52,289 INFO L272 AbstractInterpreter]: Visited 804 different actions 804 times. Never merged. Never widened. Performed 11287 root evaluator evaluations with a maximum evaluation depth of 6. Performed 11287 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Never found a fixpoint. Largest state had 44 variables. [2018-11-12 17:37:52,327 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:37:52,327 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 17:37:54,427 INFO L227 lantSequenceWeakener]: Weakened 877 states. On average, predicates are now at 78.61% of their original sizes. [2018-11-12 17:37:54,428 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 17:37:54,789 INFO L415 sIntCurrentIteration]: We unified 885 AI predicates to 885 [2018-11-12 17:37:54,789 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 17:37:54,790 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 17:37:54,790 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [6] total 20 [2018-11-12 17:37:54,791 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:37:54,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-12 17:37:54,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-12 17:37:54,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2018-11-12 17:37:54,793 INFO L87 Difference]: Start difference. First operand 20490 states and 31961 transitions. Second operand 16 states. [2018-11-12 17:38:37,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:38:37,531 INFO L93 Difference]: Finished difference Result 41811 states and 65316 transitions. [2018-11-12 17:38:37,531 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-12 17:38:37,531 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 886 [2018-11-12 17:38:37,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:38:37,621 INFO L225 Difference]: With dead ends: 41811 [2018-11-12 17:38:37,621 INFO L226 Difference]: Without dead ends: 21327 [2018-11-12 17:38:37,677 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 892 GetRequests, 871 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=87, Invalid=419, Unknown=0, NotChecked=0, Total=506 [2018-11-12 17:38:37,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21327 states. [2018-11-12 17:38:38,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21327 to 21325. [2018-11-12 17:38:38,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21325 states. [2018-11-12 17:38:38,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21325 states to 21325 states and 32809 transitions. [2018-11-12 17:38:38,137 INFO L78 Accepts]: Start accepts. Automaton has 21325 states and 32809 transitions. Word has length 886 [2018-11-12 17:38:38,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:38:38,138 INFO L480 AbstractCegarLoop]: Abstraction has 21325 states and 32809 transitions. [2018-11-12 17:38:38,138 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-12 17:38:38,138 INFO L276 IsEmpty]: Start isEmpty. Operand 21325 states and 32809 transitions. [2018-11-12 17:38:38,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 907 [2018-11-12 17:38:38,211 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:38:38,212 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 17:38:38,213 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:38:38,213 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:38:38,213 INFO L82 PathProgramCache]: Analyzing trace with hash 233933418, now seen corresponding path program 1 times [2018-11-12 17:38:38,213 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:38:38,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:38:38,214 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:38:38,215 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:38:38,215 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:38:38,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:38:38,806 WARN L179 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2018-11-12 17:38:39,379 WARN L179 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2018-11-12 17:38:39,663 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2018-11-12 17:38:40,667 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 117 proven. 31 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-12 17:38:40,668 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:38:40,668 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 17:38:40,668 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 907 with the following transitions: [2018-11-12 17:38:40,669 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [30], [34], [38], [42], [46], [50], [54], [58], [62], [66], [70], [74], [78], [82], [86], [90], [94], [98], [102], [106], [110], [114], [118], [122], [126], [130], [134], [138], [142], [146], [150], [154], [158], [162], [166], [170], [174], [178], [182], [186], [190], [194], [198], [202], [206], [210], [214], [218], [222], [226], [230], [234], [238], [242], [246], [250], [254], [258], [262], [266], [270], [274], [278], [282], [286], [290], [294], [298], [302], [306], [310], [314], [318], [322], [326], [330], [334], [338], [342], [346], [350], [354], [358], [362], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [537], [545], [553], [561], [569], [577], [585], [593], [601], [609], [617], [625], [633], [637], [639], [854], [858], [862], [866], [870], [874], [878], [882], [886], [890], [894], [898], [902], [906], [910], [914], [918], [922], [926], [930], [934], [938], [942], [946], [950], [954], [958], [962], [966], [970], [974], [978], [982], [986], [990], [994], [998], [1002], [1006], [1010], [1014], [1018], [1022], [1026], [1030], [1034], [1038], [1042], [1046], [1050], [1054], [1058], [1062], [1066], [1070], [1074], [1078], [1082], [1086], [1090], [1094], [1098], [1102], [1106], [1110], [1114], [1118], [1122], [1126], [1130], [1134], [1138], [1142], [1146], [1150], [1154], [1158], [1162], [1166], [1170], [1174], [1178], [1182], [1186], [1190], [1194], [1198], [1202], [1206], [1210], [1214], [1218], [1222], [1226], [1230], [1234], [1238], [1242], [1246], [1250], [1254], [1258], [1262], [1266], [1270], [1274], [1278], 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[2282], [2286], [2290], [2294], [2298], [2302], [2306], [2310], [2314], [2318], [2322], [2326], [2330], [2334], [2338], [2342], [2346], [2350], [2354], [2358], [2362], [2366], [2370], [2374], [2378], [2382], [2386], [2390], [2394], [2398], [2402], [2406], [2410], [2414], [2418], [2422], [2426], [2430], [2434], [2438], [2442], [2446], [2450], [2454], [2458], [2462], [2466], [2470], [2474], [2478], [2482], [2486], [2490], [2494], [2498], [2502], [2506], [2510], [2514], [2518], [2522], [2526], [2530], [2534], [2538], [2542], [2546], [2550], [2554], [2558], [2562], [2566], [2570], [2574], [2578], [2582], [2586], [2590], [2594], [2598], [2602], [2606], [2610], [2614], [2618], [2622], [2626], [2630], [2634], [2638], [2642], [2646], [2650], [2654], [2658], [2662], [2666], [2669], [2670], [2674], [2678], [2682], [2686], [2690], [2694], [2698], [2702], [2706], [2710], [2714], [2717], [2718], [2722], [2726], [2730], [2734], [2738], [2742], [2746], [2750], [2754], [2758], [2762], [2766], [2770], [2774], [2778], [2782], [2786], [2790], [2793], [2794], [2798], [2802], [2806], [2810], [2814], [2818], [2822], [2826], [2830], [2834], [2838], [2842], [2846], [2850], [2854], [2858], [2862], [2866], [2870], [2874], [2878], [2882], [2886], [2890], [2894], [2898], [2902], [2906], [2910], [2914], [2918], [2922], [2926], [2930], [2934], [2938], [2942], [2946], [2950], [2954], [2958], [2962], [2966], [2970], [2974], [2978], [2982], [2986], [2990], [2994], [2998], [3002], [3006], [3010], [3014], [3018], [3022], [3026], [3030], [3034], [3038], [3042], [3046], [3050], [3054], [3058], [3062], [3066], [3070], [3074], [3078], [3082], [3086], [3090], [3094], [3098], [3102], [3106], [3110], [3114], [3118], [3122], [3126], [3130], [3134], [3138], [3142], [3146], [3150], [3154], [3158], [3162], [3166], [3170], [3174], [3178], [3182], [3186], [3190], [3194], [3198], [3202], [3206], [3210], [3214], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3298], [3302], [3306], [3310], [3314], [3318], [3322], [3326], [3330], [3334], [3338], [3342], [3346], [3350], [3354], [3358], [3362], [3366], [3370], [3374], [3378], [3382], [3386], [3390], [3394], [3398], [3402], [3406], [3410], [3414], [3418], [3422], [3426], [3430], [3434], [3438], [3442], [3446], [3450], [3454], [3458], [3462], [3466], [3470], [3474], [3478], [3482], [3486], [3490], [3494], [3498], [3502], [3505], [3509], [3513], [3519], [3523], [3525], [3530], [3532], [3534], [3536], [3537], [3538], [3540], [3541] [2018-11-12 17:38:40,684 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 17:38:40,685 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 17:38:44,801 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 17:38:44,802 INFO L272 AbstractInterpreter]: Visited 809 different actions 1613 times. Merged at 5 different actions 7 times. Never widened. Performed 34531 root evaluator evaluations with a maximum evaluation depth of 6. Performed 34531 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 44 variables. [2018-11-12 17:38:44,807 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:38:44,807 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 17:38:44,807 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:38:44,807 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 17:38:44,817 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:38:44,817 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 17:38:45,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:38:45,093 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 17:38:46,398 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 115 proven. 2 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2018-11-12 17:38:46,399 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 17:38:46,856 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 117 proven. 31 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-12 17:38:46,879 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 17:38:46,880 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 17 [2018-11-12 17:38:46,880 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 17:38:46,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-12 17:38:46,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-12 17:38:46,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2018-11-12 17:38:46,882 INFO L87 Difference]: Start difference. First operand 21325 states and 32809 transitions. Second operand 14 states. [2018-11-12 17:38:47,771 WARN L179 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 74 [2018-11-12 17:38:47,970 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2018-11-12 17:38:48,268 WARN L179 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 75 [2018-11-12 17:38:49,033 WARN L179 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2018-11-12 17:38:49,768 WARN L179 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 48 [2018-11-12 17:38:50,284 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2018-11-12 17:38:50,741 WARN L179 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 73 [2018-11-12 17:38:51,272 WARN L179 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 74 [2018-11-12 17:38:51,586 WARN L179 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2018-11-12 17:38:52,276 WARN L179 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2018-11-12 17:38:53,218 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 48 [2018-11-12 17:38:53,537 WARN L179 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2018-11-12 17:38:54,082 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2018-11-12 17:38:55,713 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2018-11-12 17:38:55,911 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 53 [2018-11-12 17:38:56,573 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2018-11-12 17:38:57,770 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2018-11-12 17:38:59,023 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2018-11-12 17:38:59,592 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2018-11-12 17:39:09,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:39:09,947 INFO L93 Difference]: Finished difference Result 65656 states and 108937 transitions. [2018-11-12 17:39:09,947 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-11-12 17:39:09,947 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 906 [2018-11-12 17:39:09,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:39:10,127 INFO L225 Difference]: With dead ends: 65656 [2018-11-12 17:39:10,128 INFO L226 Difference]: Without dead ends: 45172 [2018-11-12 17:39:10,179 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1892 GetRequests, 1840 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 733 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=656, Invalid=2206, Unknown=0, NotChecked=0, Total=2862 [2018-11-12 17:39:10,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45172 states. [2018-11-12 17:39:11,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45172 to 44743. [2018-11-12 17:39:11,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44743 states. [2018-11-12 17:39:11,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44743 states to 44743 states and 64426 transitions. [2018-11-12 17:39:11,238 INFO L78 Accepts]: Start accepts. Automaton has 44743 states and 64426 transitions. Word has length 906 [2018-11-12 17:39:11,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:39:11,239 INFO L480 AbstractCegarLoop]: Abstraction has 44743 states and 64426 transitions. [2018-11-12 17:39:11,239 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-12 17:39:11,239 INFO L276 IsEmpty]: Start isEmpty. Operand 44743 states and 64426 transitions. [2018-11-12 17:39:11,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 930 [2018-11-12 17:39:11,327 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:39:11,328 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 17:39:11,328 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:39:11,328 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:39:11,329 INFO L82 PathProgramCache]: Analyzing trace with hash -1411716627, now seen corresponding path program 1 times [2018-11-12 17:39:11,329 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:39:11,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:39:11,330 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:39:11,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:39:11,330 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:39:11,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:39:11,881 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 138 proven. 28 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-11-12 17:39:11,881 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:39:11,881 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 17:39:11,882 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 930 with the following transitions: [2018-11-12 17:39:11,883 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [30], [34], [38], [42], [46], [50], [54], [58], [62], [66], [70], [74], [78], [82], [86], [90], [94], [98], [102], [106], [110], [114], [118], [122], [126], [130], [134], [138], [142], [146], [150], [154], [158], [162], [166], [170], [174], [178], [182], [186], [190], [194], [198], [202], [206], [210], [214], [218], [222], [226], [230], [234], [238], [242], [246], [250], [254], [258], [262], [266], [270], [274], [278], [282], [286], [290], [294], [298], [302], [306], [310], [314], [318], [322], [326], [330], [334], [338], [342], [346], [350], [354], [358], [362], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [537], [545], [553], [561], [569], [577], [585], [593], [601], [609], [617], [625], [633], [637], [639], [854], [858], [862], [866], [870], [874], [878], [882], [886], [890], [894], [898], [902], [906], [910], [914], [918], [922], [926], [930], [934], [938], [942], [946], [950], [954], [958], [962], [966], [970], [974], [978], [982], [986], [990], [994], [998], [1002], [1006], [1010], [1014], [1018], [1022], [1026], [1030], [1034], [1038], [1042], [1046], [1050], [1054], [1058], [1062], [1066], [1070], [1074], [1078], [1082], [1086], [1090], [1094], [1098], [1102], [1106], [1110], [1114], [1118], [1122], [1126], [1130], [1134], [1138], [1142], [1146], [1150], [1154], [1158], [1162], [1166], [1170], [1174], [1178], [1182], [1186], [1190], [1194], [1198], [1202], [1206], [1210], [1214], [1218], [1222], [1226], [1230], [1234], [1238], [1242], [1246], [1250], [1254], [1258], [1262], [1266], [1270], [1274], [1278], [1282], [1286], [1290], [1294], [1298], [1302], [1306], [1310], [1314], [1318], [1322], [1326], [1330], [1334], [1338], [1342], [1346], [1350], [1354], [1358], [1362], [1366], [1370], [1374], [1378], [1382], [1386], [1390], [1394], [1398], [1402], [1406], [1410], [1414], [1418], [1422], [1426], [1430], [1434], [1438], [1442], [1446], [1450], [1454], [1458], [1462], [1466], [1470], [1474], [1478], [1482], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1562], [1566], [1570], [1574], [1578], [1582], [1586], [1590], [1594], [1598], [1602], [1606], [1610], [1614], [1618], [1622], [1626], [1630], [1634], [1638], [1642], [1646], [1650], [1654], [1658], [1662], [1666], [1670], [1674], [1678], [1682], [1686], [1690], [1694], [1698], [1702], [1706], [1710], [1714], [1718], [1722], [1726], [1730], [1734], [1738], [1742], [1746], [1750], [1754], [1758], [1762], [1766], [1770], [1774], [1778], [1782], [1786], [1790], [1794], [1798], [1802], [1806], [1810], [1814], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1926], [1930], [1934], [1938], [1942], [1946], [1950], [1954], [1958], [1962], [1966], [1970], [1974], [1978], [1982], [1986], [1990], [1994], [1998], [2002], [2006], [2010], [2014], [2018], [2022], [2026], [2030], [2034], [2038], [2042], [2046], [2050], [2054], [2058], [2062], [2066], [2070], [2074], [2078], [2082], [2086], [2090], [2094], [2098], [2102], [2106], [2110], [2114], [2118], [2122], [2126], [2130], [2134], [2138], [2142], [2146], [2150], [2154], [2158], [2162], [2166], [2170], [2174], [2178], [2182], [2186], [2190], [2194], [2198], [2202], [2206], [2210], [2214], [2218], [2222], [2226], [2230], [2234], [2238], [2242], [2246], [2250], [2254], [2258], [2262], [2266], [2270], [2274], [2278], [2282], [2286], [2290], [2294], [2298], [2302], [2306], [2310], [2314], [2318], [2322], [2326], [2330], [2334], [2338], [2342], [2346], [2350], [2354], [2358], [2362], [2366], [2370], [2374], [2378], [2382], [2386], [2390], [2394], [2398], [2402], [2406], [2410], [2414], [2418], [2422], [2426], [2430], [2434], [2438], [2442], [2446], [2450], [2454], [2458], [2462], [2466], [2470], [2474], [2478], [2482], [2486], [2490], [2494], [2498], [2502], [2506], [2510], [2514], [2518], [2522], [2526], [2530], [2534], [2538], [2542], [2546], [2550], [2554], [2558], [2562], [2566], [2570], [2574], [2578], [2582], [2586], [2590], [2594], [2598], [2602], [2606], [2610], [2614], [2618], [2622], [2626], [2630], [2634], [2638], [2642], [2646], [2650], [2653], [2654], [2658], [2662], [2666], [2670], [2674], [2678], [2682], [2686], [2690], [2694], [2697], [2698], [2702], [2706], [2710], [2714], [2717], [2718], [2722], [2726], [2730], [2734], [2738], [2742], [2746], [2750], [2754], [2758], [2762], [2766], [2770], [2774], [2778], [2782], [2786], [2790], [2793], [2794], [2798], [2802], [2806], [2810], [2814], [2818], [2822], [2826], [2830], [2834], [2838], [2842], [2846], [2850], [2854], [2858], [2862], [2866], [2870], [2874], [2878], [2882], [2886], [2890], [2894], [2898], [2902], [2906], [2910], [2914], [2918], [2922], [2926], [2930], [2934], [2938], [2942], [2946], [2950], [2954], [2958], [2962], [2966], [2970], [2974], [2978], [2982], [2986], [2990], [2994], [2998], [3002], [3006], [3010], [3014], [3018], [3022], [3026], [3030], [3034], [3038], [3042], [3046], [3050], [3054], [3058], [3062], [3066], [3070], [3074], [3078], [3082], [3086], [3090], [3094], [3098], [3102], [3106], [3110], [3114], [3118], [3122], [3126], [3130], [3134], [3138], [3142], [3146], [3150], [3154], [3158], [3162], [3166], [3170], [3174], [3178], [3182], [3186], [3190], [3194], [3198], [3202], [3206], [3210], [3214], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3298], [3302], [3306], [3310], [3314], [3318], [3322], [3326], [3330], [3334], [3338], [3342], [3346], [3350], [3354], [3358], [3362], [3366], [3370], [3374], [3378], [3382], [3386], [3390], [3394], [3398], [3402], [3406], [3410], [3414], [3418], [3422], [3426], [3430], [3434], [3438], [3442], [3446], [3450], [3454], [3458], [3462], [3466], [3470], [3474], [3478], [3482], [3486], [3490], [3494], [3498], [3502], [3505], [3509], [3513], [3519], [3523], [3525], [3530], [3532], [3534], [3536], [3537], [3538], [3540], [3541] [2018-11-12 17:39:11,898 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 17:39:11,898 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 17:39:16,428 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 17:39:16,428 INFO L272 AbstractInterpreter]: Visited 810 different actions 1615 times. Merged at 5 different actions 7 times. Never widened. Performed 27679 root evaluator evaluations with a maximum evaluation depth of 6. Performed 27679 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 44 variables. [2018-11-12 17:39:16,439 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:39:16,439 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 17:39:16,439 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:39:16,439 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 17:39:16,448 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:39:16,448 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 17:39:16,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:39:16,743 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 17:39:17,387 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 135 proven. 2 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2018-11-12 17:39:17,388 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 17:39:18,017 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 138 proven. 28 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-11-12 17:39:18,038 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 17:39:18,038 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-11-12 17:39:18,038 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 17:39:18,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-12 17:39:18,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-12 17:39:18,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-11-12 17:39:18,040 INFO L87 Difference]: Start difference. First operand 44743 states and 64426 transitions. Second operand 9 states. [2018-11-12 17:39:32,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:39:32,038 INFO L93 Difference]: Finished difference Result 125025 states and 188959 transitions. [2018-11-12 17:39:32,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-11-12 17:39:32,039 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 929 [2018-11-12 17:39:32,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:39:32,552 INFO L225 Difference]: With dead ends: 125025 [2018-11-12 17:39:32,552 INFO L226 Difference]: Without dead ends: 81123 [2018-11-12 17:39:32,630 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1911 GetRequests, 1877 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=263, Invalid=859, Unknown=0, NotChecked=0, Total=1122 [2018-11-12 17:39:32,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81123 states. [2018-11-12 17:39:33,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81123 to 80655. [2018-11-12 17:39:33,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80655 states. [2018-11-12 17:39:34,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80655 states to 80655 states and 104464 transitions. [2018-11-12 17:39:34,100 INFO L78 Accepts]: Start accepts. Automaton has 80655 states and 104464 transitions. Word has length 929 [2018-11-12 17:39:34,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:39:34,101 INFO L480 AbstractCegarLoop]: Abstraction has 80655 states and 104464 transitions. [2018-11-12 17:39:34,101 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-12 17:39:34,101 INFO L276 IsEmpty]: Start isEmpty. Operand 80655 states and 104464 transitions. [2018-11-12 17:39:34,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1033 [2018-11-12 17:39:34,180 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:39:34,181 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 17:39:34,181 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:39:34,181 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:39:34,183 INFO L82 PathProgramCache]: Analyzing trace with hash 1454478308, now seen corresponding path program 1 times [2018-11-12 17:39:34,183 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:39:34,183 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:39:34,184 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:39:34,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:39:34,184 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:39:34,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:39:34,662 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 17:39:35,601 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 277 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:39:35,601 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:39:35,601 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 17:39:35,601 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 1033 with the following transitions: [2018-11-12 17:39:35,602 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [30], [34], [38], [42], [46], [50], [54], [58], [62], [66], [70], [74], [78], [82], [86], [90], [94], [98], [102], [106], [110], [114], [118], [122], [126], [130], [134], [138], [142], [146], [150], [154], [158], [162], [166], [170], [174], [178], [182], [186], [190], [194], [198], [202], [206], [210], [214], [218], [222], [226], [230], [234], [238], [242], [246], [250], [254], [258], [262], [266], [270], [274], [278], [282], [286], [290], [294], [298], [302], [306], [310], [314], [318], [322], [326], [330], [334], [338], [342], [346], [350], [354], [358], [362], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [537], [545], [553], [561], [569], [577], [585], [593], [601], [609], [617], [625], [633], [637], [639], [854], [858], [862], [866], [870], [874], [878], [882], [886], [890], [894], [898], [902], [906], [910], [914], [918], [922], [926], [930], [934], [938], [942], [946], [950], [954], [958], [962], [966], [970], [974], [978], [982], [986], [990], [994], [998], [1002], [1006], [1010], [1014], [1018], [1022], [1026], [1030], [1034], [1038], [1042], [1046], [1050], [1054], [1058], [1062], [1066], [1070], [1074], [1078], [1082], [1086], [1090], [1094], [1098], [1102], [1106], [1110], [1114], [1118], [1122], [1126], [1130], [1134], [1138], [1142], [1146], [1150], [1154], [1158], [1162], [1166], [1170], [1174], [1178], [1182], [1186], [1190], [1194], [1198], [1202], [1206], [1210], [1214], [1218], [1222], [1226], [1230], [1234], [1238], [1242], [1246], [1250], [1254], [1258], [1262], [1266], [1270], [1274], [1278], [1282], [1286], [1290], [1294], [1298], [1302], [1306], [1310], [1314], [1318], [1322], [1326], [1330], [1334], [1338], [1342], [1346], [1350], [1354], [1358], [1362], [1366], [1370], [1374], [1378], [1382], [1386], [1390], [1394], [1398], [1402], [1406], [1410], [1414], [1418], [1422], [1426], [1430], [1434], [1438], [1442], [1446], [1450], [1454], [1458], [1462], [1466], [1470], [1474], [1478], [1482], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1562], [1566], [1570], [1574], [1578], [1582], [1586], [1590], [1594], [1598], [1602], [1606], [1610], [1614], [1618], [1622], [1626], [1630], [1634], [1638], [1642], [1646], [1650], [1654], [1658], [1662], [1666], [1670], [1674], [1678], [1682], [1686], [1690], [1694], [1698], [1702], [1706], [1710], [1714], [1718], [1722], [1726], [1730], [1734], [1738], [1742], [1746], [1750], [1754], [1758], [1762], [1766], [1770], [1774], [1778], [1782], [1786], [1790], [1794], [1798], [1802], [1806], [1810], [1814], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1926], [1930], [1934], [1938], [1942], [1946], [1950], [1954], [1958], [1962], [1966], [1970], [1974], [1978], [1982], [1986], [1990], [1994], [1998], [2002], [2006], [2010], [2014], [2018], [2022], [2026], [2030], [2034], [2038], [2042], [2046], [2050], [2054], [2058], [2062], [2066], [2070], [2074], [2078], [2082], [2086], [2090], [2094], [2098], [2102], [2106], [2110], [2114], [2118], [2122], [2126], [2130], [2134], [2138], [2142], [2146], [2150], [2154], [2158], [2162], [2166], [2170], [2174], [2178], [2182], [2186], [2190], [2194], [2198], [2202], [2206], [2210], [2214], [2218], [2222], [2226], [2230], [2234], [2238], [2242], [2246], [2250], [2254], [2258], [2262], [2266], [2270], [2274], [2278], [2282], [2286], [2290], [2294], [2298], [2302], [2306], [2310], [2314], [2318], [2322], [2326], [2330], [2334], [2338], [2342], [2346], [2350], [2354], [2358], [2362], [2366], [2370], [2374], [2378], [2382], [2386], [2390], [2394], [2398], [2402], [2406], [2410], [2414], [2418], [2422], [2426], [2430], [2434], [2438], [2442], [2446], [2450], [2454], [2458], [2462], [2466], [2470], [2474], [2478], [2482], [2486], [2490], [2494], [2498], [2502], [2506], [2510], [2514], [2518], [2522], [2526], [2530], [2534], [2538], [2542], [2546], [2550], [2554], [2558], [2562], [2566], [2570], [2574], [2578], [2582], [2586], [2590], [2594], [2598], [2602], [2606], [2610], [2614], [2618], [2622], [2626], [2630], [2634], [2638], [2642], [2646], [2650], [2654], [2658], [2662], [2666], [2670], [2674], [2678], [2682], [2686], [2690], [2694], [2697], [2698], [2702], [2706], [2710], [2714], [2718], [2722], [2726], [2730], [2734], [2738], [2742], [2746], [2750], [2754], [2758], [2762], [2766], [2770], [2774], [2778], [2782], [2786], [2790], [2793], [2794], [2798], [2802], [2806], [2810], [2814], [2818], [2822], [2826], [2830], [2834], [2838], [2842], [2846], [2850], [2854], [2858], [2862], [2866], [2870], [2874], [2878], [2882], [2886], [2890], [2894], [2898], [2902], [2906], [2910], [2914], [2918], [2922], [2926], [2930], [2934], [2938], [2942], [2946], [2950], [2954], [2958], [2962], [2966], [2970], [2974], [2978], [2982], [2986], [2990], [2994], [2998], [3002], [3006], [3010], [3014], [3018], [3022], [3026], [3030], [3034], [3038], [3042], [3046], [3050], [3054], [3058], [3062], [3066], [3070], [3074], [3078], [3082], [3086], [3090], [3094], [3098], [3102], [3106], [3110], [3114], [3118], [3122], [3126], [3130], [3134], [3138], [3142], [3146], [3150], [3154], [3158], [3162], [3166], [3170], [3174], [3178], [3182], [3186], [3190], [3193], [3194], [3198], [3202], [3206], [3210], [3214], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3298], [3302], [3306], [3310], [3314], [3318], [3322], [3326], [3330], [3334], [3338], [3342], [3346], [3350], [3354], [3358], [3362], [3366], [3370], [3374], [3378], [3382], [3386], [3390], [3394], [3398], [3402], [3406], [3410], [3414], [3418], [3422], [3426], [3430], [3434], [3438], [3442], [3446], [3450], [3454], [3458], [3462], [3466], [3470], [3474], [3478], [3482], [3486], [3490], [3494], [3498], [3502], [3505], [3509], [3513], [3519], [3523], [3525], [3530], [3532], [3534], [3536], [3537], [3538], [3540], [3541] [2018-11-12 17:39:35,616 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 17:39:35,616 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 17:39:39,074 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 17:39:39,074 INFO L272 AbstractInterpreter]: Visited 809 different actions 1611 times. Merged at 5 different actions 5 times. Never widened. Performed 24529 root evaluator evaluations with a maximum evaluation depth of 6. Performed 24529 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 44 variables. [2018-11-12 17:39:39,079 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:39:39,079 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 17:39:39,079 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:39:39,079 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 17:39:39,088 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:39:39,089 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 17:39:39,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:39:39,403 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 17:39:40,069 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 226 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2018-11-12 17:39:40,069 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 17:39:41,104 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 226 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2018-11-12 17:39:41,125 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-12 17:39:41,125 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [12] total 13 [2018-11-12 17:39:41,126 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:39:41,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 17:39:41,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 17:39:41,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2018-11-12 17:39:41,127 INFO L87 Difference]: Start difference. First operand 80655 states and 104464 transitions. Second operand 3 states. [2018-11-12 17:39:46,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:39:46,025 INFO L93 Difference]: Finished difference Result 160469 states and 208074 transitions. [2018-11-12 17:39:46,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 17:39:46,025 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1032 [2018-11-12 17:39:46,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:39:46,215 INFO L225 Difference]: With dead ends: 160469 [2018-11-12 17:39:46,216 INFO L226 Difference]: Without dead ends: 80655 [2018-11-12 17:39:46,317 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2077 GetRequests, 2060 SyntacticMatches, 6 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2018-11-12 17:39:46,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80655 states. [2018-11-12 17:39:47,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80655 to 76464. [2018-11-12 17:39:47,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76464 states. [2018-11-12 17:39:47,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76464 states to 76464 states and 93023 transitions. [2018-11-12 17:39:47,705 INFO L78 Accepts]: Start accepts. Automaton has 76464 states and 93023 transitions. Word has length 1032 [2018-11-12 17:39:47,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:39:47,706 INFO L480 AbstractCegarLoop]: Abstraction has 76464 states and 93023 transitions. [2018-11-12 17:39:47,706 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 17:39:47,706 INFO L276 IsEmpty]: Start isEmpty. Operand 76464 states and 93023 transitions. [2018-11-12 17:39:47,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1064 [2018-11-12 17:39:47,772 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:39:47,773 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 17:39:47,773 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:39:47,773 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:39:47,774 INFO L82 PathProgramCache]: Analyzing trace with hash -2043092946, now seen corresponding path program 1 times [2018-11-12 17:39:47,774 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:39:47,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:39:47,775 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:39:47,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:39:47,775 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:39:47,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:39:48,653 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-11-12 17:39:49,928 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 249 proven. 44 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2018-11-12 17:39:49,929 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:39:49,929 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 17:39:49,929 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 1064 with the following transitions: [2018-11-12 17:39:49,930 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [30], [34], [38], [42], [46], [50], [54], [58], [62], [66], [70], [74], [78], [82], [86], [90], [94], [98], [102], [106], [110], [114], [118], [122], [126], [130], [134], [138], [142], [146], [150], [154], [158], [162], [166], [170], [174], [178], [182], [186], [190], [194], [198], [202], [206], [210], [214], [218], [222], [226], [230], [234], [238], [242], [246], [250], [254], [258], [262], [266], [270], [274], [278], [282], [286], [290], [294], [298], [302], [306], [310], [314], [318], [322], [326], [330], [334], [338], [342], [346], [350], [354], [358], [362], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [537], [545], [553], [561], [569], [577], [585], [593], [601], [609], [617], [625], [633], [637], [639], [854], [858], [862], [866], [870], [874], [878], [882], [886], [890], [894], [898], [902], [906], [910], [914], [918], [922], [926], [930], [934], [938], [942], [946], [950], [954], [958], [962], [966], [970], [974], [978], [982], [986], [990], [994], [998], [1002], [1006], [1010], [1014], [1018], [1022], [1026], [1030], [1034], [1038], [1042], [1046], [1050], [1054], [1058], [1062], [1066], [1070], [1074], [1078], [1082], [1086], [1090], [1094], [1098], [1102], [1106], [1110], [1114], [1118], [1122], [1126], [1130], [1134], [1138], [1142], [1146], [1150], [1154], [1158], [1162], [1166], [1170], [1174], [1178], [1182], [1186], [1190], [1194], [1198], [1202], [1206], [1210], [1214], [1218], [1222], [1226], [1230], [1234], [1238], [1242], [1246], [1250], [1254], [1258], [1262], [1266], [1270], [1274], [1278], [1282], [1286], [1290], [1294], [1298], [1302], [1306], [1310], [1314], [1318], [1322], [1326], [1330], [1334], [1338], [1342], [1346], [1350], [1354], [1358], [1362], [1366], [1370], [1374], [1378], [1382], [1386], [1390], [1394], [1398], [1402], [1406], [1410], [1414], [1418], [1422], [1426], [1430], [1434], [1438], [1442], [1446], [1450], [1454], [1458], [1462], [1466], [1470], [1474], [1478], [1482], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1562], [1566], [1570], [1574], [1578], [1582], [1586], [1590], [1594], [1598], [1602], [1606], [1610], [1614], [1618], [1622], [1626], [1630], [1634], [1638], [1642], [1646], [1650], [1654], [1658], [1662], [1666], [1670], [1674], [1678], [1682], [1686], [1690], [1694], [1698], [1702], [1706], [1710], [1714], [1718], [1722], [1726], [1730], [1734], [1738], [1742], [1746], [1750], [1754], [1758], [1762], [1766], [1770], [1774], [1778], [1782], [1786], [1790], [1794], [1798], [1802], [1806], [1810], [1814], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1926], [1930], [1934], [1938], [1942], [1946], [1950], [1954], [1958], [1962], [1966], [1970], [1974], [1978], [1982], [1986], [1990], [1994], [1998], [2002], [2006], [2010], [2014], [2018], [2022], [2026], [2030], [2034], [2038], [2042], [2046], [2050], [2054], [2058], [2062], [2066], [2070], [2074], [2078], [2082], [2086], [2090], [2094], [2098], [2102], [2106], [2110], [2114], [2118], [2122], [2126], [2130], [2134], [2138], [2142], [2146], [2150], [2154], [2158], [2162], [2166], [2170], [2174], [2178], [2182], [2186], [2190], [2194], [2198], [2202], [2206], [2210], [2214], [2218], [2222], [2226], [2230], [2234], [2238], [2242], [2246], [2250], [2254], [2258], [2262], [2266], [2270], [2274], [2278], [2282], [2286], [2290], [2294], [2298], [2302], [2306], [2310], [2314], [2318], [2322], [2326], [2330], [2334], [2338], [2342], [2346], [2350], [2354], [2358], [2362], [2366], [2370], [2374], [2378], [2382], [2386], [2390], [2394], [2398], [2402], [2406], [2410], [2414], [2418], [2422], [2426], [2430], [2434], [2438], [2442], [2446], [2450], [2454], [2458], [2462], [2466], [2470], [2474], [2478], [2482], [2486], [2490], [2494], [2498], [2502], [2506], [2510], [2514], [2518], [2522], [2526], [2530], [2534], [2538], [2542], [2546], [2550], [2554], [2558], [2562], [2566], [2570], [2574], [2578], [2582], [2586], [2590], [2594], [2598], [2602], [2606], [2610], [2614], [2618], [2622], [2626], [2630], [2634], [2638], [2642], [2646], [2650], [2654], [2658], [2662], [2666], [2669], [2670], [2674], [2678], [2682], [2686], [2690], [2694], [2698], [2702], [2706], [2710], [2714], [2718], [2722], [2726], [2730], [2734], [2738], [2742], [2746], [2750], [2754], [2758], [2762], [2766], [2770], [2774], [2778], [2782], [2786], [2790], [2794], [2798], [2802], [2806], [2810], [2814], [2818], [2822], [2826], [2830], [2834], [2838], [2842], [2846], [2850], [2854], [2858], [2862], [2866], [2870], [2874], [2878], [2882], [2886], [2890], [2894], [2898], [2902], [2906], [2910], [2914], [2918], [2922], [2926], [2930], [2934], [2938], [2942], [2946], [2950], [2954], [2958], [2962], [2966], [2970], [2974], [2978], [2982], [2986], [2990], [2994], [2998], [3002], [3006], [3010], [3014], [3018], [3022], [3026], [3030], [3034], [3038], [3042], [3045], [3046], [3050], [3054], [3058], [3062], [3066], [3070], [3074], [3078], [3082], [3086], [3090], [3093], [3094], [3098], [3102], [3106], [3110], [3114], [3118], [3122], [3126], [3130], [3134], [3138], [3142], [3146], [3150], [3154], [3158], [3162], [3166], [3170], [3174], [3178], [3182], [3186], [3190], [3194], [3198], [3202], [3206], [3210], [3214], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3298], [3302], [3306], [3310], [3314], [3318], [3322], [3326], [3330], [3334], [3338], [3342], [3346], [3350], [3354], [3358], [3362], [3366], [3370], [3374], [3378], [3382], [3386], [3390], [3394], [3398], [3402], [3406], [3410], [3414], [3418], [3422], [3426], [3430], [3434], [3438], [3442], [3446], [3450], [3454], [3458], [3462], [3466], [3470], [3474], [3478], [3482], [3486], [3490], [3494], [3498], [3502], [3505], [3509], [3513], [3519], [3523], [3525], [3530], [3532], [3534], [3536], [3537], [3538], [3540], [3541] [2018-11-12 17:39:49,941 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 17:39:49,942 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 17:39:58,649 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 17:39:58,649 INFO L272 AbstractInterpreter]: Visited 809 different actions 3230 times. Merged at 8 different actions 28 times. Never widened. Performed 55595 root evaluator evaluations with a maximum evaluation depth of 6. Performed 55595 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 6 fixpoints after 3 different actions. Largest state had 44 variables. [2018-11-12 17:39:58,659 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:39:58,659 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 17:39:58,659 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:39:58,659 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 17:40:02,114 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:40:02,115 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 17:40:02,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:40:02,443 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 17:40:03,284 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 257 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2018-11-12 17:40:03,284 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 17:40:04,025 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 257 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2018-11-12 17:40:04,046 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-12 17:40:04,046 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [9] total 10 [2018-11-12 17:40:04,046 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:40:04,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 17:40:04,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 17:40:04,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-11-12 17:40:04,048 INFO L87 Difference]: Start difference. First operand 76464 states and 93023 transitions. Second operand 3 states. [2018-11-12 17:40:08,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:40:08,857 INFO L93 Difference]: Finished difference Result 150273 states and 183165 transitions. [2018-11-12 17:40:08,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 17:40:08,858 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1063 [2018-11-12 17:40:08,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:40:08,859 INFO L225 Difference]: With dead ends: 150273 [2018-11-12 17:40:08,859 INFO L226 Difference]: Without dead ends: 0 [2018-11-12 17:40:08,977 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2141 GetRequests, 2126 SyntacticMatches, 7 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-11-12 17:40:08,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-12 17:40:08,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-12 17:40:08,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-12 17:40:08,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-12 17:40:08,979 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1063 [2018-11-12 17:40:08,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:40:08,979 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-12 17:40:08,980 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 17:40:08,980 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-12 17:40:08,980 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-12 17:40:08,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-12 17:40:09,982 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:09,985 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,000 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,012 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,014 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,023 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,025 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,035 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,046 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,048 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,053 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,054 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,064 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,065 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,067 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,078 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,080 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,155 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,156 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,220 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,223 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,224 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,227 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,229 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,232 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,232 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,233 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,236 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,240 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,240 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,241 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,242 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,243 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,244 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,245 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,249 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,254 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,255 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,262 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,264 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,266 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,267 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,269 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,271 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,272 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,281 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,284 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,285 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,291 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,294 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,296 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,301 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,305 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,315 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,319 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,321 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,323 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,328 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,329 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,339 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,347 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,353 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,356 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,357 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,360 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,364 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,376 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,378 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,380 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,386 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,391 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,397 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,400 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,401 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,409 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,411 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,413 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,416 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,421 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,422 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,423 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,424 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,426 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,431 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,437 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,439 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,441 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,449 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,452 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,457 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,458 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,461 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,465 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,482 WARN L179 SmtUtils]: Spent 523.00 ms on a formula simplification. DAG size of input: 438 DAG size of output: 141 [2018-11-12 17:40:10,638 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,647 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,659 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,664 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,665 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,673 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,675 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,687 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,699 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,700 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,705 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,706 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,712 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,713 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,714 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,725 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,727 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,761 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,762 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,799 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,802 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,803 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,806 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,808 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,811 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,812 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,813 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,816 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,820 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,821 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,821 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,822 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,823 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,824 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,825 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,829 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,830 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,837 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,838 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,840 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,842 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,843 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,845 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,846 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,854 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,857 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,858 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,864 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,867 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,869 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,876 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,878 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,888 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,891 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,893 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,894 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,898 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,902 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,908 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,915 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,921 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,922 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,924 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,926 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,930 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,940 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,941 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,943 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,948 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,952 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,956 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,958 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,959 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,965 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,967 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,969 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,971 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,974 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,975 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,975 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,976 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,980 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,983 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,991 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,993 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:10,995 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:11,001 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:11,003 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:11,008 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:11,009 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:11,011 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:11,015 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 17:40:11,027 WARN L179 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 435 DAG size of output: 146 Received shutdown request... [2018-11-12 17:40:12,998 WARN L187 SmtUtils]: Removed 66 from assertion stack [2018-11-12 17:40:12,999 INFO L256 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2018-11-12 17:40:13,000 INFO L168 Benchmark]: Toolchain (without parser) took 208523.78 ms. Allocated memory was 1.5 GB in the beginning and 5.0 GB in the end (delta: 3.4 GB). Free memory was 1.4 GB in the beginning and 3.9 GB in the end (delta: -2.5 GB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. [2018-11-12 17:40:13,001 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 17:40:13,002 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2362.28 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 211.4 MB). Peak memory consumption was 211.4 MB. Max. memory is 7.1 GB. [2018-11-12 17:40:13,003 INFO L168 Benchmark]: Boogie Procedure Inliner took 341.48 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 795.3 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 55.3 MB. Max. memory is 7.1 GB. [2018-11-12 17:40:13,004 INFO L168 Benchmark]: Boogie Preprocessor took 290.97 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2018-11-12 17:40:13,004 INFO L168 Benchmark]: RCFGBuilder took 10173.23 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 173.5 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -133.2 MB). Peak memory consumption was 679.2 MB. Max. memory is 7.1 GB. [2018-11-12 17:40:13,005 INFO L168 Benchmark]: TraceAbstraction took 195349.90 ms. Allocated memory was 2.5 GB in the beginning and 5.0 GB in the end (delta: 2.4 GB). Free memory was 2.4 GB in the beginning and 3.9 GB in the end (delta: -1.5 GB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2018-11-12 17:40:13,017 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2362.28 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 211.4 MB). Peak memory consumption was 211.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 341.48 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 795.3 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 55.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 290.97 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10173.23 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 173.5 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -133.2 MB). Peak memory consumption was 679.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 195349.90 ms. Allocated memory was 2.5 GB in the beginning and 5.0 GB in the end (delta: 2.4 GB). Free memory was 2.4 GB in the beginning and 3.9 GB in the end (delta: -1.5 GB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4727]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while SimplifyDDAWithTimeout was simplifying term of DAG size 283. RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown