java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem06_label57_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-18 10:45:02,543 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-18 10:45:02,545 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-18 10:45:02,564 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-18 10:45:02,564 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-18 10:45:02,565 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-18 10:45:02,567 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-18 10:45:02,569 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-18 10:45:02,573 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-18 10:45:02,574 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-18 10:45:02,576 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-18 10:45:02,577 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-18 10:45:02,580 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-18 10:45:02,583 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-18 10:45:02,588 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-18 10:45:02,589 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-18 10:45:02,589 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-18 10:45:02,591 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-18 10:45:02,595 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-18 10:45:02,598 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-18 10:45:02,599 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-18 10:45:02,600 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-18 10:45:02,603 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-18 10:45:02,604 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-18 10:45:02,604 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-18 10:45:02,605 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-18 10:45:02,606 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-18 10:45:02,606 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-18 10:45:02,607 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-18 10:45:02,608 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-18 10:45:02,608 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-18 10:45:02,609 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-18 10:45:02,609 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-18 10:45:02,609 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-18 10:45:02,610 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-18 10:45:02,611 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-18 10:45:02,611 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-18 10:45:02,642 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-18 10:45:02,643 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-18 10:45:02,644 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-18 10:45:02,644 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-18 10:45:02,644 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-18 10:45:02,644 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-18 10:45:02,648 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-18 10:45:02,648 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-18 10:45:02,648 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-18 10:45:02,648 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-18 10:45:02,648 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-18 10:45:02,649 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-18 10:45:02,651 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-18 10:45:02,651 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-18 10:45:02,651 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-18 10:45:02,651 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-18 10:45:02,651 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-18 10:45:02,652 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-18 10:45:02,652 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-18 10:45:02,652 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-18 10:45:02,652 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-18 10:45:02,654 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-18 10:45:02,654 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-18 10:45:02,654 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-18 10:45:02,654 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 10:45:02,655 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-18 10:45:02,655 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-18 10:45:02,655 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-18 10:45:02,655 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-18 10:45:02,655 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-18 10:45:02,656 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-18 10:45:02,656 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-18 10:45:02,656 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-18 10:45:02,656 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-18 10:45:02,719 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-18 10:45:02,735 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-18 10:45:02,742 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-18 10:45:02,743 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-18 10:45:02,744 INFO L276 PluginConnector]: CDTParser initialized [2018-09-18 10:45:02,745 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label57_true-unreach-call.c [2018-09-18 10:45:03,086 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0885e342e/08f2b98084d64a7dbba3ca5f4e38109b/FLAG9a5fb1dc9 [2018-09-18 10:45:03,675 INFO L277 CDTParser]: Found 1 translation units. [2018-09-18 10:45:03,676 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem06_label57_true-unreach-call.c [2018-09-18 10:45:03,735 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0885e342e/08f2b98084d64a7dbba3ca5f4e38109b/FLAG9a5fb1dc9 [2018-09-18 10:45:03,757 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0885e342e/08f2b98084d64a7dbba3ca5f4e38109b [2018-09-18 10:45:03,769 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-18 10:45:03,772 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-18 10:45:03,774 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-18 10:45:03,774 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-18 10:45:03,780 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-18 10:45:03,781 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 10:45:03" (1/1) ... [2018-09-18 10:45:03,785 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43dbb45b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:45:03, skipping insertion in model container [2018-09-18 10:45:03,786 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 10:45:03" (1/1) ... [2018-09-18 10:45:03,799 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-18 10:45:05,631 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 10:45:05,654 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-18 10:45:06,797 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 10:45:07,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:45:07 WrapperNode [2018-09-18 10:45:07,028 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-18 10:45:07,029 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-18 10:45:07,029 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-18 10:45:07,029 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-18 10:45:07,039 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:45:07" (1/1) ... [2018-09-18 10:45:07,124 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:45:07" (1/1) ... [2018-09-18 10:45:07,325 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-18 10:45:07,325 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-18 10:45:07,326 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-18 10:45:07,326 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-18 10:45:07,941 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:45:07" (1/1) ... [2018-09-18 10:45:07,942 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:45:07" (1/1) ... [2018-09-18 10:45:08,004 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:45:07" (1/1) ... [2018-09-18 10:45:08,004 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:45:07" (1/1) ... [2018-09-18 10:45:08,158 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:45:07" (1/1) ... [2018-09-18 10:45:08,219 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:45:07" (1/1) ... [2018-09-18 10:45:08,280 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:45:07" (1/1) ... [2018-09-18 10:45:08,335 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-18 10:45:08,335 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-18 10:45:08,335 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-18 10:45:08,336 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-18 10:45:08,338 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:45:07" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 10:45:08,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-18 10:45:08,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-18 10:45:08,409 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-09-18 10:45:08,410 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-09-18 10:45:08,410 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-09-18 10:45:08,410 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-09-18 10:45:08,410 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-18 10:45:08,410 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-18 10:45:08,411 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-18 10:45:08,411 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-18 10:45:08,411 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-18 10:45:08,411 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-18 10:45:08,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-18 10:45:08,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-18 10:45:08,412 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-18 10:45:08,412 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-18 10:45:21,561 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-18 10:45:21,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 10:45:21 BoogieIcfgContainer [2018-09-18 10:45:21,562 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-18 10:45:21,563 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-18 10:45:21,563 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-18 10:45:21,566 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-18 10:45:21,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 10:45:03" (1/3) ... [2018-09-18 10:45:21,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64eef392 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 10:45:21, skipping insertion in model container [2018-09-18 10:45:21,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:45:07" (2/3) ... [2018-09-18 10:45:21,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64eef392 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 10:45:21, skipping insertion in model container [2018-09-18 10:45:21,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 10:45:21" (3/3) ... [2018-09-18 10:45:21,570 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem06_label57_true-unreach-call.c [2018-09-18 10:45:21,578 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-18 10:45:21,588 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-18 10:45:21,652 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-18 10:45:21,653 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-18 10:45:21,653 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-18 10:45:21,653 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-18 10:45:21,654 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-18 10:45:21,654 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-18 10:45:21,654 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-18 10:45:21,654 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-18 10:45:21,654 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-18 10:45:21,698 INFO L276 IsEmpty]: Start isEmpty. Operand 1316 states. [2018-09-18 10:45:21,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 989 [2018-09-18 10:45:21,779 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:45:21,781 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 10:45:21,783 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:45:21,789 INFO L82 PathProgramCache]: Analyzing trace with hash 1589348328, now seen corresponding path program 1 times [2018-09-18 10:45:21,792 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:45:21,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:45:21,847 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:45:21,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:45:21,847 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:45:22,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:45:24,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:45:24,896 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 10:45:24,897 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-18 10:45:24,897 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:45:24,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 10:45:24,916 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 10:45:24,917 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 10:45:24,919 INFO L87 Difference]: Start difference. First operand 1316 states. Second operand 3 states. [2018-09-18 10:45:33,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:45:33,661 INFO L93 Difference]: Finished difference Result 3733 states and 6982 transitions. [2018-09-18 10:45:33,664 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 10:45:33,665 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 988 [2018-09-18 10:45:33,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:45:33,707 INFO L225 Difference]: With dead ends: 3733 [2018-09-18 10:45:33,707 INFO L226 Difference]: Without dead ends: 2415 [2018-09-18 10:45:33,717 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 6 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 10:45:33,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2415 states. [2018-09-18 10:45:33,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2415 to 2393. [2018-09-18 10:45:33,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2393 states. [2018-09-18 10:45:33,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2393 states to 2393 states and 4243 transitions. [2018-09-18 10:45:33,891 INFO L78 Accepts]: Start accepts. Automaton has 2393 states and 4243 transitions. Word has length 988 [2018-09-18 10:45:33,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:45:33,895 INFO L480 AbstractCegarLoop]: Abstraction has 2393 states and 4243 transitions. [2018-09-18 10:45:33,895 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 10:45:33,895 INFO L276 IsEmpty]: Start isEmpty. Operand 2393 states and 4243 transitions. [2018-09-18 10:45:33,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1018 [2018-09-18 10:45:33,962 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:45:33,963 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 10:45:33,964 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:45:33,964 INFO L82 PathProgramCache]: Analyzing trace with hash 427757273, now seen corresponding path program 1 times [2018-09-18 10:45:33,965 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:45:33,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:45:33,966 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:45:33,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:45:33,966 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:45:34,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:45:36,045 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:45:36,045 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 10:45:36,046 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-18 10:45:36,046 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:45:36,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 10:45:36,049 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 10:45:36,050 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 10:45:36,050 INFO L87 Difference]: Start difference. First operand 2393 states and 4243 transitions. Second operand 3 states. [2018-09-18 10:45:44,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:45:44,406 INFO L93 Difference]: Finished difference Result 6889 states and 12411 transitions. [2018-09-18 10:45:44,407 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 10:45:44,407 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1017 [2018-09-18 10:45:44,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:45:44,433 INFO L225 Difference]: With dead ends: 6889 [2018-09-18 10:45:44,433 INFO L226 Difference]: Without dead ends: 4502 [2018-09-18 10:45:44,442 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 10:45:44,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4502 states. [2018-09-18 10:45:44,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4502 to 4491. [2018-09-18 10:45:44,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4491 states. [2018-09-18 10:45:44,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4491 states to 4491 states and 7452 transitions. [2018-09-18 10:45:44,557 INFO L78 Accepts]: Start accepts. Automaton has 4491 states and 7452 transitions. Word has length 1017 [2018-09-18 10:45:44,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:45:44,559 INFO L480 AbstractCegarLoop]: Abstraction has 4491 states and 7452 transitions. [2018-09-18 10:45:44,559 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 10:45:44,559 INFO L276 IsEmpty]: Start isEmpty. Operand 4491 states and 7452 transitions. [2018-09-18 10:45:44,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1035 [2018-09-18 10:45:44,587 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:45:44,588 INFO L376 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 10:45:44,589 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:45:44,590 INFO L82 PathProgramCache]: Analyzing trace with hash 1612378279, now seen corresponding path program 1 times [2018-09-18 10:45:44,590 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:45:44,591 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:45:44,591 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:45:44,591 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:45:44,591 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:45:44,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:45:45,862 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 51 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:45:45,863 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:45:45,863 INFO L197 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 [2018-09-18 10:45:45,881 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:45:45,881 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:45:46,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:45:46,470 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:45:47,671 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 51 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:45:47,671 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:45:49,034 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 51 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:45:49,070 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:45:49,070 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 10:45:49,098 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:45:49,098 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:45:50,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:45:50,259 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:45:51,426 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-09-18 10:45:51,427 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:45:52,913 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [MP cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (3)] Exception during sending of exit command (exit): Broken pipe [2018-09-18 10:45:52,917 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 3 imperfect interpolant sequences. [2018-09-18 10:45:52,918 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [6, 5, 5] total 17 [2018-09-18 10:45:52,918 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:45:52,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 10:45:52,920 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 10:45:52,920 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2018-09-18 10:45:52,921 INFO L87 Difference]: Start difference. First operand 4491 states and 7452 transitions. Second operand 5 states. [2018-09-18 10:46:05,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:46:05,561 INFO L93 Difference]: Finished difference Result 13506 states and 22865 transitions. [2018-09-18 10:46:05,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-18 10:46:05,563 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1034 [2018-09-18 10:46:05,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:46:05,609 INFO L225 Difference]: With dead ends: 13506 [2018-09-18 10:46:05,610 INFO L226 Difference]: Without dead ends: 9021 [2018-09-18 10:46:05,625 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4141 GetRequests, 4124 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2018-09-18 10:46:05,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9021 states. [2018-09-18 10:46:05,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9021 to 8898. [2018-09-18 10:46:05,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8898 states. [2018-09-18 10:46:05,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8898 states to 8898 states and 13723 transitions. [2018-09-18 10:46:05,838 INFO L78 Accepts]: Start accepts. Automaton has 8898 states and 13723 transitions. Word has length 1034 [2018-09-18 10:46:05,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:46:05,838 INFO L480 AbstractCegarLoop]: Abstraction has 8898 states and 13723 transitions. [2018-09-18 10:46:05,839 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 10:46:05,839 INFO L276 IsEmpty]: Start isEmpty. Operand 8898 states and 13723 transitions. [2018-09-18 10:46:05,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1053 [2018-09-18 10:46:05,885 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:46:05,886 INFO L376 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 10:46:05,886 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:46:05,886 INFO L82 PathProgramCache]: Analyzing trace with hash 476981322, now seen corresponding path program 1 times [2018-09-18 10:46:05,887 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:46:05,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:46:05,888 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:46:05,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:46:05,888 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:46:05,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:46:07,087 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 69 proven. 14 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-09-18 10:46:07,087 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:46:07,088 INFO L197 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 [2018-09-18 10:46:07,097 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:46:07,097 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:46:07,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:46:07,621 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:46:08,189 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 79 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-09-18 10:46:08,190 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:46:08,869 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 69 proven. 14 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-09-18 10:46:08,893 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:46:08,893 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 10:46:08,910 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:46:08,910 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:46:10,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:46:10,107 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:46:10,695 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 79 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-09-18 10:46:10,696 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:46:11,177 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 69 proven. 14 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-09-18 10:46:11,181 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 10:46:11,182 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 14 [2018-09-18 10:46:11,182 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 10:46:11,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 10:46:11,184 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 10:46:11,184 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2018-09-18 10:46:11,185 INFO L87 Difference]: Start difference. First operand 8898 states and 13723 transitions. Second operand 9 states. [2018-09-18 10:46:24,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:46:24,259 INFO L93 Difference]: Finished difference Result 22362 states and 36206 transitions. [2018-09-18 10:46:24,260 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-18 10:46:24,260 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1052 [2018-09-18 10:46:24,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:46:24,332 INFO L225 Difference]: With dead ends: 22362 [2018-09-18 10:46:24,332 INFO L226 Difference]: Without dead ends: 13470 [2018-09-18 10:46:24,366 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4224 GetRequests, 4201 SyntacticMatches, 6 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2018-09-18 10:46:24,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13470 states. [2018-09-18 10:46:24,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13470 to 13232. [2018-09-18 10:46:24,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13232 states. [2018-09-18 10:46:24,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13232 states to 13232 states and 20052 transitions. [2018-09-18 10:46:24,692 INFO L78 Accepts]: Start accepts. Automaton has 13232 states and 20052 transitions. Word has length 1052 [2018-09-18 10:46:24,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:46:24,693 INFO L480 AbstractCegarLoop]: Abstraction has 13232 states and 20052 transitions. [2018-09-18 10:46:24,693 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 10:46:24,693 INFO L276 IsEmpty]: Start isEmpty. Operand 13232 states and 20052 transitions. [2018-09-18 10:46:24,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1060 [2018-09-18 10:46:24,746 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:46:24,747 INFO L376 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 10:46:24,747 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:46:24,748 INFO L82 PathProgramCache]: Analyzing trace with hash -81000687, now seen corresponding path program 1 times [2018-09-18 10:46:24,748 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:46:24,749 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:46:24,749 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:46:24,749 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:46:24,750 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:46:24,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:46:26,096 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 76 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:46:26,096 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:46:26,096 INFO L197 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 [2018-09-18 10:46:26,105 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:46:26,106 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:46:26,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:46:26,594 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:46:27,434 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-09-18 10:46:27,434 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:46:28,386 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-09-18 10:46:28,409 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-18 10:46:28,410 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 8 [2018-09-18 10:46:28,410 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:46:28,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 10:46:28,412 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 10:46:28,412 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-09-18 10:46:28,412 INFO L87 Difference]: Start difference. First operand 13232 states and 20052 transitions. Second operand 3 states. [2018-09-18 10:46:34,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:46:34,912 INFO L93 Difference]: Finished difference Result 39116 states and 61966 transitions. [2018-09-18 10:46:34,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 10:46:34,918 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1059 [2018-09-18 10:46:34,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:46:35,034 INFO L225 Difference]: With dead ends: 39116 [2018-09-18 10:46:35,034 INFO L226 Difference]: Without dead ends: 25890 [2018-09-18 10:46:35,084 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2123 GetRequests, 2117 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-09-18 10:46:35,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25890 states. [2018-09-18 10:46:35,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25890 to 25809. [2018-09-18 10:46:35,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25809 states. [2018-09-18 10:46:35,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25809 states to 25809 states and 37898 transitions. [2018-09-18 10:46:35,779 INFO L78 Accepts]: Start accepts. Automaton has 25809 states and 37898 transitions. Word has length 1059 [2018-09-18 10:46:35,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:46:35,781 INFO L480 AbstractCegarLoop]: Abstraction has 25809 states and 37898 transitions. [2018-09-18 10:46:35,781 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 10:46:35,781 INFO L276 IsEmpty]: Start isEmpty. Operand 25809 states and 37898 transitions. [2018-09-18 10:46:35,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1076 [2018-09-18 10:46:35,888 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:46:35,889 INFO L376 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 10:46:35,889 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:46:35,896 INFO L82 PathProgramCache]: Analyzing trace with hash -161579593, now seen corresponding path program 1 times [2018-09-18 10:46:35,896 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:46:35,897 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:46:35,897 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:46:35,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:46:35,899 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:46:36,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:46:37,113 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 108 proven. 14 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-09-18 10:46:37,113 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:46:37,113 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 10:46:37,128 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:46:37,129 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:46:37,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:46:37,651 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:46:38,394 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 120 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-09-18 10:46:38,394 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:46:38,903 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 108 proven. 14 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-09-18 10:46:38,926 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:46:38,926 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 10:46:38,943 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:46:38,943 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:46:40,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:46:40,109 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:46:40,822 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 120 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-09-18 10:46:40,822 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:46:41,348 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 108 proven. 14 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-09-18 10:46:41,352 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 10:46:41,353 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 16 [2018-09-18 10:46:41,353 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 10:46:41,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 10:46:41,355 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 10:46:41,355 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2018-09-18 10:46:41,355 INFO L87 Difference]: Start difference. First operand 25809 states and 37898 transitions. Second operand 9 states. [2018-09-18 10:47:08,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:47:08,356 INFO L93 Difference]: Finished difference Result 105800 states and 215813 transitions. [2018-09-18 10:47:08,357 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-09-18 10:47:08,357 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1075 [2018-09-18 10:47:08,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:47:08,871 INFO L225 Difference]: With dead ends: 105800 [2018-09-18 10:47:08,872 INFO L226 Difference]: Without dead ends: 79997 [2018-09-18 10:47:09,022 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4368 GetRequests, 4321 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 556 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=442, Invalid=1814, Unknown=0, NotChecked=0, Total=2256 [2018-09-18 10:47:09,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79997 states. [2018-09-18 10:47:11,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79997 to 78398. [2018-09-18 10:47:11,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78398 states. [2018-09-18 10:47:11,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78398 states to 78398 states and 121958 transitions. [2018-09-18 10:47:11,533 INFO L78 Accepts]: Start accepts. Automaton has 78398 states and 121958 transitions. Word has length 1075 [2018-09-18 10:47:11,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:47:11,534 INFO L480 AbstractCegarLoop]: Abstraction has 78398 states and 121958 transitions. [2018-09-18 10:47:11,534 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 10:47:11,534 INFO L276 IsEmpty]: Start isEmpty. Operand 78398 states and 121958 transitions. [2018-09-18 10:47:11,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1078 [2018-09-18 10:47:11,773 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:47:11,774 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 10:47:11,774 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:47:11,775 INFO L82 PathProgramCache]: Analyzing trace with hash 614874323, now seen corresponding path program 1 times [2018-09-18 10:47:11,775 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:47:11,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:47:11,776 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:47:11,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:47:11,777 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:47:11,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:47:12,174 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 10:47:13,602 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 73 proven. 36 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2018-09-18 10:47:13,602 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:47:13,602 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 10:47:13,614 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:47:13,614 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:47:14,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:47:14,183 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:47:15,022 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-09-18 10:47:15,022 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:47:15,816 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 73 proven. 36 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2018-09-18 10:47:15,840 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 10:47:15,840 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-09-18 10:47:15,841 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:47:15,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 10:47:15,842 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 10:47:15,842 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-09-18 10:47:15,842 INFO L87 Difference]: Start difference. First operand 78398 states and 121958 transitions. Second operand 5 states. [2018-09-18 10:47:25,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:47:25,862 INFO L93 Difference]: Finished difference Result 196860 states and 322730 transitions. [2018-09-18 10:47:25,862 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-18 10:47:25,862 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1077 [2018-09-18 10:47:25,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:47:26,301 INFO L225 Difference]: With dead ends: 196860 [2018-09-18 10:47:26,301 INFO L226 Difference]: Without dead ends: 118468 [2018-09-18 10:47:26,447 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2163 GetRequests, 2148 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-09-18 10:47:26,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118468 states. [2018-09-18 10:47:28,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118468 to 118096. [2018-09-18 10:47:28,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118096 states. [2018-09-18 10:47:28,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118096 states to 118096 states and 184945 transitions. [2018-09-18 10:47:28,912 INFO L78 Accepts]: Start accepts. Automaton has 118096 states and 184945 transitions. Word has length 1077 [2018-09-18 10:47:28,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:47:28,913 INFO L480 AbstractCegarLoop]: Abstraction has 118096 states and 184945 transitions. [2018-09-18 10:47:28,913 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 10:47:28,913 INFO L276 IsEmpty]: Start isEmpty. Operand 118096 states and 184945 transitions. [2018-09-18 10:47:29,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1092 [2018-09-18 10:47:29,291 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:47:29,292 INFO L376 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 10:47:29,293 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:47:29,293 INFO L82 PathProgramCache]: Analyzing trace with hash -996079531, now seen corresponding path program 1 times [2018-09-18 10:47:29,295 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:47:29,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:47:29,296 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:47:29,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:47:29,296 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:47:29,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:47:31,387 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 134 proven. 28 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-09-18 10:47:31,387 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:47:31,388 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 10:47:31,400 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:47:31,400 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:47:31,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:47:31,995 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:47:33,367 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 165 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-09-18 10:47:33,367 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:47:33,793 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 134 proven. 28 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-09-18 10:47:33,816 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:47:33,816 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 10:47:33,836 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:47:33,836 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:47:35,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:47:35,231 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:47:36,111 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 165 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-09-18 10:47:36,111 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:47:36,920 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 134 proven. 28 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-09-18 10:47:36,924 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 10:47:36,926 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 15 [2018-09-18 10:47:36,926 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 10:47:36,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 10:47:36,928 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 10:47:36,928 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2018-09-18 10:47:36,928 INFO L87 Difference]: Start difference. First operand 118096 states and 184945 transitions. Second operand 9 states. [2018-09-18 10:48:24,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:48:24,344 INFO L93 Difference]: Finished difference Result 496786 states and 1217149 transitions. [2018-09-18 10:48:24,346 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-09-18 10:48:24,346 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1091 [2018-09-18 10:48:24,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. Received shutdown request... [2018-09-18 10:48:36,438 INFO L225 Difference]: With dead ends: 496786 [2018-09-18 10:48:36,438 INFO L226 Difference]: Without dead ends: 378696 [2018-09-18 10:48:36,783 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4456 GetRequests, 4394 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1131 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=700, Invalid=3082, Unknown=0, NotChecked=0, Total=3782 [2018-09-18 10:48:37,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378696 states. [2018-09-18 10:48:37,028 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-18 10:48:37,032 WARN L206 ceAbstractionStarter]: Timeout [2018-09-18 10:48:37,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 10:48:37 BoogieIcfgContainer [2018-09-18 10:48:37,032 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-18 10:48:37,033 INFO L168 Benchmark]: Toolchain (without parser) took 213263.28 ms. Allocated memory was 1.6 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 3.1 GB in the end (delta: -1.7 GB). Peak memory consumption was 3.3 GB. Max. memory is 7.1 GB. [2018-09-18 10:48:37,034 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-18 10:48:37,036 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3254.93 ms. Allocated memory is still 1.6 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 412.9 MB). Peak memory consumption was 412.9 MB. Max. memory is 7.1 GB. [2018-09-18 10:48:37,037 INFO L168 Benchmark]: Boogie Procedure Inliner took 296.37 ms. Allocated memory was 1.6 GB in the beginning and 1.7 GB in the end (delta: 194.0 MB). Free memory was 1.0 GB in the beginning and 1.6 GB in the end (delta: -614.9 MB). Peak memory consumption was 79.3 MB. Max. memory is 7.1 GB. [2018-09-18 10:48:37,038 INFO L168 Benchmark]: Boogie Preprocessor took 1009.43 ms. Allocated memory was 1.7 GB in the beginning and 2.3 GB in the end (delta: 562.0 MB). Free memory was 1.6 GB in the beginning and 2.2 GB in the end (delta: -529.4 MB). Peak memory consumption was 110.0 MB. Max. memory is 7.1 GB. [2018-09-18 10:48:37,039 INFO L168 Benchmark]: RCFGBuilder took 13226.47 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 336.1 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: -38.3 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-09-18 10:48:37,039 INFO L168 Benchmark]: TraceAbstraction took 195469.61 ms. Allocated memory was 2.6 GB in the beginning and 5.0 GB in the end (delta: 2.3 GB). Free memory was 2.2 GB in the beginning and 3.1 GB in the end (delta: -880.4 MB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. [2018-09-18 10:48:37,045 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 3254.93 ms. Allocated memory is still 1.6 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 412.9 MB). Peak memory consumption was 412.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 296.37 ms. Allocated memory was 1.6 GB in the beginning and 1.7 GB in the end (delta: 194.0 MB). Free memory was 1.0 GB in the beginning and 1.6 GB in the end (delta: -614.9 MB). Peak memory consumption was 79.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1009.43 ms. Allocated memory was 1.7 GB in the beginning and 2.3 GB in the end (delta: 562.0 MB). Free memory was 1.6 GB in the beginning and 2.2 GB in the end (delta: -529.4 MB). Peak memory consumption was 110.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 13226.47 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 336.1 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: -38.3 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. * TraceAbstraction took 195469.61 ms. Allocated memory was 2.6 GB in the beginning and 5.0 GB in the end (delta: 2.3 GB). Free memory was 2.2 GB in the beginning and 3.1 GB in the end (delta: -880.4 MB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 9411]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 9411). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 1316 locations, 1 error locations. TIMEOUT Result, 195.3s OverallTime, 8 OverallIterations, 6 TraceHistogramMax, 147.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 7606 SDtfs, 34331 SDslu, 8594 SDs, 0 SdLazy, 86535 SolverSat, 19119 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 102.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21492 GetRequests, 21314 SyntacticMatches, 20 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1877 ImplicationChecksByTransitivity, 7.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=118096occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 6.7s AutomataMinimizationTime, 8 MinimizatonAttempts, 2446 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.7s SsaConstructionTime, 7.4s SatisfiabilityAnalysisTime, 23.4s InterpolantComputationTime, 19033 NumberOfCodeBlocks, 19033 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 29645 ConstructedInterpolants, 0 QuantifiedInterpolants, 43710677 SizeOfPredicates, 14 NumberOfNonLiveVariables, 25680 ConjunctsInSsa, 74 ConjunctsInUnsatCore, 28 InterpolantComputations, 7 PerfectInterpolantSequences, 3113/3373 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem06_label57_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-18_10-48-37-060.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem06_label57_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-18_10-48-37-060.csv Completed graceful shutdown