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/Problem19_label49_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-14 18:26:20,535 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-14 18:26:20,537 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-14 18:26:20,550 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-14 18:26:20,550 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-14 18:26:20,551 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-14 18:26:20,552 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-14 18:26:20,555 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-14 18:26:20,556 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-14 18:26:20,557 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-14 18:26:20,558 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-14 18:26:20,559 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-14 18:26:20,560 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-14 18:26:20,561 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-14 18:26:20,562 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-14 18:26:20,563 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-14 18:26:20,564 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-14 18:26:20,566 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-14 18:26:20,568 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-14 18:26:20,570 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-14 18:26:20,571 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-14 18:26:20,572 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-14 18:26:20,575 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-14 18:26:20,575 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-14 18:26:20,575 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-14 18:26:20,576 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-14 18:26:20,578 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-14 18:26:20,578 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-14 18:26:20,579 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-14 18:26:20,581 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-14 18:26:20,581 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-14 18:26:20,582 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-14 18:26:20,582 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-14 18:26:20,582 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-14 18:26:20,583 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-14 18:26:20,584 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-14 18:26:20,585 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 [2018-09-14 18:26:20,600 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-14 18:26:20,601 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-14 18:26:20,601 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-14 18:26:20,602 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-14 18:26:20,602 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-14 18:26:20,602 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-14 18:26:20,602 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-14 18:26:20,602 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-14 18:26:20,603 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-14 18:26:20,603 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-14 18:26:20,603 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-14 18:26:20,604 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-14 18:26:20,604 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-14 18:26:20,604 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-14 18:26:20,604 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-14 18:26:20,604 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-14 18:26:20,605 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-14 18:26:20,605 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-14 18:26:20,605 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-14 18:26:20,605 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-14 18:26:20,605 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-14 18:26:20,606 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-14 18:26:20,606 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-14 18:26:20,606 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 18:26:20,606 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-14 18:26:20,606 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-14 18:26:20,607 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-14 18:26:20,607 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-14 18:26:20,607 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-14 18:26:20,607 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-14 18:26:20,607 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-14 18:26:20,608 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-14 18:26:20,608 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-14 18:26:20,676 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-14 18:26:20,697 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-14 18:26:20,701 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-14 18:26:20,706 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-14 18:26:20,707 INFO L276 PluginConnector]: CDTParser initialized [2018-09-14 18:26:20,708 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label49_true-unreach-call.c [2018-09-14 18:26:21,078 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc1b5929d/21476688ead149cc80b1661303683dc6/FLAG6c32ca698 [2018-09-14 18:26:21,686 INFO L277 CDTParser]: Found 1 translation units. [2018-09-14 18:26:21,687 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label49_true-unreach-call.c [2018-09-14 18:26:21,737 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc1b5929d/21476688ead149cc80b1661303683dc6/FLAG6c32ca698 [2018-09-14 18:26:21,759 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc1b5929d/21476688ead149cc80b1661303683dc6 [2018-09-14 18:26:21,774 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-14 18:26:21,777 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-14 18:26:21,778 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-14 18:26:21,781 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-14 18:26:21,788 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-14 18:26:21,789 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 06:26:21" (1/1) ... [2018-09-14 18:26:21,793 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a64aa8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:26:21, skipping insertion in model container [2018-09-14 18:26:21,793 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 06:26:21" (1/1) ... [2018-09-14 18:26:21,806 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-14 18:26:23,724 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 18:26:23,746 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-14 18:26:24,832 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 18:26:25,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:26:25 WrapperNode [2018-09-14 18:26:25,620 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-14 18:26:25,621 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-14 18:26:25,621 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-14 18:26:25,621 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-14 18:26:25,631 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:26:25" (1/1) ... [2018-09-14 18:26:25,800 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:26:25" (1/1) ... [2018-09-14 18:26:27,387 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-14 18:26:27,388 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-14 18:26:27,388 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-14 18:26:27,388 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-14 18:26:27,399 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:26:25" (1/1) ... [2018-09-14 18:26:27,399 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:26:25" (1/1) ... [2018-09-14 18:26:27,542 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:26:25" (1/1) ... [2018-09-14 18:26:27,543 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:26:25" (1/1) ... [2018-09-14 18:26:27,909 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:26:25" (1/1) ... [2018-09-14 18:26:27,949 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:26:25" (1/1) ... [2018-09-14 18:26:28,119 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:26:25" (1/1) ... [2018-09-14 18:26:28,393 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-14 18:26:28,394 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-14 18:26:28,394 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-14 18:26:28,394 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-14 18:26:28,395 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:26:25" (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 [2018-09-14 18:26:28,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-14 18:26:28,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-14 18:26:28,470 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-09-14 18:26:28,470 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-09-14 18:26:28,471 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-09-14 18:26:28,471 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-09-14 18:26:28,471 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-09-14 18:26:28,471 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-09-14 18:26:28,471 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-14 18:26:28,471 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-14 18:26:28,472 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-14 18:26:28,472 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-14 18:26:28,472 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-14 18:26:28,472 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-14 18:26:28,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-14 18:26:28,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-14 18:26:28,473 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-14 18:26:28,473 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-14 18:26:45,890 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-14 18:26:45,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 06:26:45 BoogieIcfgContainer [2018-09-14 18:26:45,891 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-14 18:26:45,892 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-14 18:26:45,892 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-14 18:26:45,895 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-14 18:26:45,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 06:26:21" (1/3) ... [2018-09-14 18:26:45,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68985a8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 06:26:45, skipping insertion in model container [2018-09-14 18:26:45,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:26:25" (2/3) ... [2018-09-14 18:26:45,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68985a8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 06:26:45, skipping insertion in model container [2018-09-14 18:26:45,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 06:26:45" (3/3) ... [2018-09-14 18:26:45,899 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label49_true-unreach-call.c [2018-09-14 18:26:45,909 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-14 18:26:45,920 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-14 18:26:45,990 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-14 18:26:45,991 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-14 18:26:45,991 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-14 18:26:45,991 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-14 18:26:45,992 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-14 18:26:45,992 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-14 18:26:45,992 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-14 18:26:45,992 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-14 18:26:45,992 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-14 18:26:46,046 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-09-14 18:26:46,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-09-14 18:26:46,056 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:26:46,057 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] [2018-09-14 18:26:46,059 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:26:46,064 INFO L82 PathProgramCache]: Analyzing trace with hash 607797826, now seen corresponding path program 1 times [2018-09-14 18:26:46,067 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:26:46,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:26:46,128 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:26:46,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:26:46,129 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:26:46,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:26:46,580 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 18:26:46,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:26:46,699 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:26:46,699 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-14 18:26:46,700 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:26:46,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 18:26:46,723 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 18:26:46,724 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 18:26:46,727 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 3 states. [2018-09-14 18:27:04,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:27:04,467 INFO L93 Difference]: Finished difference Result 4998 states and 9417 transitions. [2018-09-14 18:27:04,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 18:27:04,470 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 49 [2018-09-14 18:27:04,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:27:04,515 INFO L225 Difference]: With dead ends: 4998 [2018-09-14 18:27:04,516 INFO L226 Difference]: Without dead ends: 3218 [2018-09-14 18:27:04,530 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 18:27:04,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3218 states. [2018-09-14 18:27:04,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3218 to 3215. [2018-09-14 18:27:04,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3215 states. [2018-09-14 18:27:04,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3215 states to 3215 states and 5854 transitions. [2018-09-14 18:27:04,759 INFO L78 Accepts]: Start accepts. Automaton has 3215 states and 5854 transitions. Word has length 49 [2018-09-14 18:27:04,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:27:04,760 INFO L480 AbstractCegarLoop]: Abstraction has 3215 states and 5854 transitions. [2018-09-14 18:27:04,760 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 18:27:04,763 INFO L276 IsEmpty]: Start isEmpty. Operand 3215 states and 5854 transitions. [2018-09-14 18:27:04,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-09-14 18:27:04,772 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:27:04,775 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 18:27:04,775 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:27:04,776 INFO L82 PathProgramCache]: Analyzing trace with hash -539453364, now seen corresponding path program 1 times [2018-09-14 18:27:04,776 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:27:04,780 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:27:04,780 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:27:04,781 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:27:04,781 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:27:04,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:27:05,172 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 18:27:05,567 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:27:05,567 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:27:05,567 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 18:27:05,568 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:27:05,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 18:27:05,571 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 18:27:05,571 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 18:27:05,571 INFO L87 Difference]: Start difference. First operand 3215 states and 5854 transitions. Second operand 6 states. [2018-09-14 18:27:34,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:27:34,883 INFO L93 Difference]: Finished difference Result 10744 states and 19770 transitions. [2018-09-14 18:27:34,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 18:27:34,883 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 121 [2018-09-14 18:27:34,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:27:34,924 INFO L225 Difference]: With dead ends: 10744 [2018-09-14 18:27:34,925 INFO L226 Difference]: Without dead ends: 7535 [2018-09-14 18:27:34,938 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 18:27:34,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7535 states. [2018-09-14 18:27:35,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7535 to 7498. [2018-09-14 18:27:35,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7498 states. [2018-09-14 18:27:35,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7498 states to 7498 states and 12452 transitions. [2018-09-14 18:27:35,146 INFO L78 Accepts]: Start accepts. Automaton has 7498 states and 12452 transitions. Word has length 121 [2018-09-14 18:27:35,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:27:35,147 INFO L480 AbstractCegarLoop]: Abstraction has 7498 states and 12452 transitions. [2018-09-14 18:27:35,147 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 18:27:35,147 INFO L276 IsEmpty]: Start isEmpty. Operand 7498 states and 12452 transitions. [2018-09-14 18:27:35,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-09-14 18:27:35,154 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:27:35,154 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 18:27:35,155 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:27:35,155 INFO L82 PathProgramCache]: Analyzing trace with hash -1062487657, now seen corresponding path program 1 times [2018-09-14 18:27:35,155 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:27:35,156 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:27:35,156 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:27:35,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:27:35,157 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:27:35,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:27:35,395 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:27:35,396 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:27:35,396 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 18:27:35,396 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:27:35,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 18:27:35,397 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 18:27:35,397 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 18:27:35,398 INFO L87 Difference]: Start difference. First operand 7498 states and 12452 transitions. Second operand 6 states. [2018-09-14 18:28:03,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:28:03,231 INFO L93 Difference]: Finished difference Result 23905 states and 40026 transitions. [2018-09-14 18:28:03,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 18:28:03,233 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 123 [2018-09-14 18:28:03,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:28:03,319 INFO L225 Difference]: With dead ends: 23905 [2018-09-14 18:28:03,319 INFO L226 Difference]: Without dead ends: 16413 [2018-09-14 18:28:03,353 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 18:28:03,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16413 states. [2018-09-14 18:28:03,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16413 to 16230. [2018-09-14 18:28:03,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16230 states. [2018-09-14 18:28:03,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16230 states to 16230 states and 25357 transitions. [2018-09-14 18:28:03,768 INFO L78 Accepts]: Start accepts. Automaton has 16230 states and 25357 transitions. Word has length 123 [2018-09-14 18:28:03,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:28:03,769 INFO L480 AbstractCegarLoop]: Abstraction has 16230 states and 25357 transitions. [2018-09-14 18:28:03,769 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 18:28:03,769 INFO L276 IsEmpty]: Start isEmpty. Operand 16230 states and 25357 transitions. [2018-09-14 18:28:03,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-09-14 18:28:03,774 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:28:03,775 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 18:28:03,775 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:28:03,775 INFO L82 PathProgramCache]: Analyzing trace with hash 1488344396, now seen corresponding path program 1 times [2018-09-14 18:28:03,775 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:28:03,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:28:03,776 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:28:03,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:28:03,776 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:28:03,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:28:04,117 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:28:04,118 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:28:04,118 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-14 18:28:04,118 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:28:04,119 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 18:28:04,119 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 18:28:04,119 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-14 18:28:04,119 INFO L87 Difference]: Start difference. First operand 16230 states and 25357 transitions. Second operand 5 states. [2018-09-14 18:28:31,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:28:31,913 INFO L93 Difference]: Finished difference Result 48265 states and 76873 transitions. [2018-09-14 18:28:31,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 18:28:31,916 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2018-09-14 18:28:31,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:28:32,020 INFO L225 Difference]: With dead ends: 48265 [2018-09-14 18:28:32,020 INFO L226 Difference]: Without dead ends: 32041 [2018-09-14 18:28:32,067 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-14 18:28:32,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32041 states. [2018-09-14 18:28:32,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32041 to 31565. [2018-09-14 18:28:32,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31565 states. [2018-09-14 18:28:32,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31565 states to 31565 states and 43757 transitions. [2018-09-14 18:28:32,707 INFO L78 Accepts]: Start accepts. Automaton has 31565 states and 43757 transitions. Word has length 154 [2018-09-14 18:28:32,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:28:32,707 INFO L480 AbstractCegarLoop]: Abstraction has 31565 states and 43757 transitions. [2018-09-14 18:28:32,707 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 18:28:32,708 INFO L276 IsEmpty]: Start isEmpty. Operand 31565 states and 43757 transitions. [2018-09-14 18:28:32,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-09-14 18:28:32,717 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:28:32,717 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:28:32,718 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:28:32,718 INFO L82 PathProgramCache]: Analyzing trace with hash 664970826, now seen corresponding path program 1 times [2018-09-14 18:28:32,718 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:28:32,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:28:32,722 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:28:32,722 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:28:32,722 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:28:32,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:28:33,002 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 18:28:33,379 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 84 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 18:28:33,380 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:28:33,380 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 [2018-09-14 18:28:33,399 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:28:33,399 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:28:33,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:28:33,519 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:28:33,703 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-09-14 18:28:33,703 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:28:34,116 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-09-14 18:28:34,147 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-14 18:28:34,147 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 8 [2018-09-14 18:28:34,147 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:28:34,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 18:28:34,149 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 18:28:34,149 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-09-14 18:28:34,149 INFO L87 Difference]: Start difference. First operand 31565 states and 43757 transitions. Second operand 3 states. [2018-09-14 18:28:47,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:28:47,699 INFO L93 Difference]: Finished difference Result 74849 states and 106773 transitions. [2018-09-14 18:28:47,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 18:28:47,700 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 220 [2018-09-14 18:28:47,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:28:47,905 INFO L225 Difference]: With dead ends: 74849 [2018-09-14 18:28:47,905 INFO L226 Difference]: Without dead ends: 43290 [2018-09-14 18:28:48,030 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 446 GetRequests, 439 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-09-14 18:28:48,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43290 states. [2018-09-14 18:28:48,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43290 to 43169. [2018-09-14 18:28:48,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43169 states. [2018-09-14 18:28:49,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43169 states to 43169 states and 57706 transitions. [2018-09-14 18:28:49,033 INFO L78 Accepts]: Start accepts. Automaton has 43169 states and 57706 transitions. Word has length 220 [2018-09-14 18:28:49,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:28:49,033 INFO L480 AbstractCegarLoop]: Abstraction has 43169 states and 57706 transitions. [2018-09-14 18:28:49,034 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 18:28:49,034 INFO L276 IsEmpty]: Start isEmpty. Operand 43169 states and 57706 transitions. [2018-09-14 18:28:49,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2018-09-14 18:28:49,054 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:28:49,055 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:28:49,055 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:28:49,056 INFO L82 PathProgramCache]: Analyzing trace with hash -78716726, now seen corresponding path program 1 times [2018-09-14 18:28:49,056 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:28:49,057 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:28:49,057 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:28:49,057 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:28:49,058 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:28:49,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:28:49,842 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 84 proven. 109 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 18:28:49,843 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:28:49,843 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 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 18:28:49,855 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:28:49,856 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:28:49,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:28:49,950 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:28:50,129 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 153 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-09-14 18:28:50,130 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:28:50,272 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 84 proven. 2 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2018-09-14 18:28:50,292 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 18:28:50,292 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 3] total 8 [2018-09-14 18:28:50,293 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:28:50,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 18:28:50,293 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 18:28:50,294 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-09-14 18:28:50,294 INFO L87 Difference]: Start difference. First operand 43169 states and 57706 transitions. Second operand 3 states. [2018-09-14 18:29:03,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:29:03,458 INFO L93 Difference]: Finished difference Result 125881 states and 176135 transitions. [2018-09-14 18:29:03,459 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 18:29:03,459 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 287 [2018-09-14 18:29:03,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:29:03,738 INFO L225 Difference]: With dead ends: 125881 [2018-09-14 18:29:03,738 INFO L226 Difference]: Without dead ends: 82718 [2018-09-14 18:29:03,841 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 581 GetRequests, 575 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-09-14 18:29:03,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82718 states. [2018-09-14 18:29:05,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82718 to 82605. [2018-09-14 18:29:05,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82605 states. [2018-09-14 18:29:05,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82605 states to 82605 states and 113304 transitions. [2018-09-14 18:29:05,316 INFO L78 Accepts]: Start accepts. Automaton has 82605 states and 113304 transitions. Word has length 287 [2018-09-14 18:29:05,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:29:05,317 INFO L480 AbstractCegarLoop]: Abstraction has 82605 states and 113304 transitions. [2018-09-14 18:29:05,317 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 18:29:05,317 INFO L276 IsEmpty]: Start isEmpty. Operand 82605 states and 113304 transitions. [2018-09-14 18:29:05,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2018-09-14 18:29:05,341 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:29:05,341 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:29:05,341 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:29:05,342 INFO L82 PathProgramCache]: Analyzing trace with hash 491555080, now seen corresponding path program 1 times [2018-09-14 18:29:05,342 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:29:05,342 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:29:05,343 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:29:05,343 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:29:05,343 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:29:05,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:29:06,080 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 84 proven. 109 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 18:29:06,080 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:29:06,081 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 [2018-09-14 18:29:06,097 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:29:06,098 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:29:06,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:29:06,203 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:29:06,574 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2018-09-14 18:29:06,574 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:29:07,540 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 84 proven. 109 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 18:29:07,579 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 18:29:07,579 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 5] total 12 [2018-09-14 18:29:07,580 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:29:07,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 18:29:07,583 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 18:29:07,584 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2018-09-14 18:29:07,584 INFO L87 Difference]: Start difference. First operand 82605 states and 113304 transitions. Second operand 5 states. [2018-09-14 18:29:31,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:29:31,974 INFO L93 Difference]: Finished difference Result 215540 states and 313667 transitions. [2018-09-14 18:29:31,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 18:29:31,975 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 287 [2018-09-14 18:29:31,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:29:32,359 INFO L225 Difference]: With dead ends: 215540 [2018-09-14 18:29:32,359 INFO L226 Difference]: Without dead ends: 132941 [2018-09-14 18:29:32,502 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 584 GetRequests, 570 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2018-09-14 18:29:32,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132941 states. [2018-09-14 18:29:34,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132941 to 131585. [2018-09-14 18:29:34,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131585 states. [2018-09-14 18:29:34,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131585 states to 131585 states and 182527 transitions. [2018-09-14 18:29:34,733 INFO L78 Accepts]: Start accepts. Automaton has 131585 states and 182527 transitions. Word has length 287 [2018-09-14 18:29:34,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:29:34,734 INFO L480 AbstractCegarLoop]: Abstraction has 131585 states and 182527 transitions. [2018-09-14 18:29:34,734 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 18:29:34,734 INFO L276 IsEmpty]: Start isEmpty. Operand 131585 states and 182527 transitions. [2018-09-14 18:29:34,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2018-09-14 18:29:34,777 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:29:34,777 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-09-14 18:29:34,777 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:29:34,778 INFO L82 PathProgramCache]: Analyzing trace with hash 120117628, now seen corresponding path program 1 times [2018-09-14 18:29:34,778 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:29:34,779 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:29:34,779 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:29:34,779 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:29:34,779 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:29:34,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:29:35,039 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 126 proven. 145 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-09-14 18:29:35,039 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:29:35,039 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 18:29:35,049 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:29:35,049 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:29:35,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:29:35,143 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:29:35,291 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2018-09-14 18:29:35,292 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:29:35,619 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 126 proven. 145 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-09-14 18:29:35,640 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 18:29:35,641 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 9 [2018-09-14 18:29:35,641 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:29:35,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 18:29:35,641 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 18:29:35,642 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-09-14 18:29:35,642 INFO L87 Difference]: Start difference. First operand 131585 states and 182527 transitions. Second operand 5 states. [2018-09-14 18:29:55,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:29:55,813 INFO L93 Difference]: Finished difference Result 389456 states and 569529 transitions. [2018-09-14 18:29:55,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 18:29:55,816 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 309 [2018-09-14 18:29:55,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:29:56,539 INFO L225 Difference]: With dead ends: 389456 [2018-09-14 18:29:56,539 INFO L226 Difference]: Without dead ends: 257877 [2018-09-14 18:29:56,716 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 627 GetRequests, 616 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-09-14 18:29:56,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257877 states. [2018-09-14 18:30:00,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257877 to 256304. [2018-09-14 18:30:00,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256304 states. [2018-09-14 18:30:00,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256304 states to 256304 states and 348167 transitions. [2018-09-14 18:30:00,744 INFO L78 Accepts]: Start accepts. Automaton has 256304 states and 348167 transitions. Word has length 309 [2018-09-14 18:30:00,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:30:00,745 INFO L480 AbstractCegarLoop]: Abstraction has 256304 states and 348167 transitions. [2018-09-14 18:30:00,745 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 18:30:00,745 INFO L276 IsEmpty]: Start isEmpty. Operand 256304 states and 348167 transitions. [2018-09-14 18:30:00,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 544 [2018-09-14 18:30:00,770 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:30:00,771 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 18:30:00,771 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:30:00,771 INFO L82 PathProgramCache]: Analyzing trace with hash 848054389, now seen corresponding path program 1 times [2018-09-14 18:30:00,772 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:30:00,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:30:00,772 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:30:00,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:30:00,773 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:30:00,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:30:01,417 INFO L134 CoverageAnalysis]: Checked inductivity of 501 backedges. 294 proven. 104 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2018-09-14 18:30:01,417 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:30:01,418 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 [2018-09-14 18:30:01,427 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:30:01,427 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:30:02,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:30:02,907 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:30:03,051 INFO L134 CoverageAnalysis]: Checked inductivity of 501 backedges. 456 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2018-09-14 18:30:03,052 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:30:03,335 INFO L134 CoverageAnalysis]: Checked inductivity of 501 backedges. 294 proven. 104 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2018-09-14 18:30:03,356 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:30:03,356 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 7 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 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 18:30:03,372 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:30:03,372 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:30:03,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:30:03,699 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:30:04,001 INFO L134 CoverageAnalysis]: Checked inductivity of 501 backedges. 456 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2018-09-14 18:30:04,003 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:30:05,242 INFO L134 CoverageAnalysis]: Checked inductivity of 501 backedges. 294 proven. 104 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2018-09-14 18:30:05,244 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 18:30:05,246 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-09-14 18:30:05,246 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 18:30:05,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 18:30:05,247 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 18:30:05,247 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-14 18:30:05,248 INFO L87 Difference]: Start difference. First operand 256304 states and 348167 transitions. Second operand 9 states. Received shutdown request... [2018-09-14 18:30:11,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-14 18:30:11,669 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-14 18:30:11,674 WARN L206 ceAbstractionStarter]: Timeout [2018-09-14 18:30:11,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 06:30:11 BoogieIcfgContainer [2018-09-14 18:30:11,674 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-14 18:30:11,675 INFO L168 Benchmark]: Toolchain (without parser) took 229900.60 ms. Allocated memory was 1.5 GB in the beginning and 3.3 GB in the end (delta: 1.8 GB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -362.3 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-09-14 18:30:11,676 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-14 18:30:11,676 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3841.83 ms. Allocated memory was 1.5 GB in the beginning and 1.8 GB in the end (delta: 226.5 MB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -143.6 MB). Peak memory consumption was 490.1 MB. Max. memory is 7.1 GB. [2018-09-14 18:30:11,678 INFO L168 Benchmark]: Boogie Procedure Inliner took 1766.88 ms. Allocated memory was 1.8 GB in the beginning and 2.5 GB in the end (delta: 768.6 MB). Free memory was 1.6 GB in the beginning and 2.4 GB in the end (delta: -794.1 MB). Peak memory consumption was 160.4 MB. Max. memory is 7.1 GB. [2018-09-14 18:30:11,679 INFO L168 Benchmark]: Boogie Preprocessor took 1005.94 ms. Allocated memory is still 2.5 GB. Free memory was 2.4 GB in the beginning and 2.3 GB in the end (delta: 96.6 MB). Peak memory consumption was 96.6 MB. Max. memory is 7.1 GB. [2018-09-14 18:30:11,680 INFO L168 Benchmark]: RCFGBuilder took 17497.25 ms. Allocated memory was 2.5 GB in the beginning and 2.9 GB in the end (delta: 361.8 MB). Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 2.7 MB). Peak memory consumption was 955.4 MB. Max. memory is 7.1 GB. [2018-09-14 18:30:11,681 INFO L168 Benchmark]: TraceAbstraction took 205782.27 ms. Allocated memory was 2.9 GB in the beginning and 3.3 GB in the end (delta: 422.6 MB). Free memory was 2.3 GB in the beginning and 1.8 GB in the end (delta: 476.1 MB). Peak memory consumption was 898.7 MB. Max. memory is 7.1 GB. [2018-09-14 18:30:11,686 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 3841.83 ms. Allocated memory was 1.5 GB in the beginning and 1.8 GB in the end (delta: 226.5 MB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -143.6 MB). Peak memory consumption was 490.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 1766.88 ms. Allocated memory was 1.8 GB in the beginning and 2.5 GB in the end (delta: 768.6 MB). Free memory was 1.6 GB in the beginning and 2.4 GB in the end (delta: -794.1 MB). Peak memory consumption was 160.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1005.94 ms. Allocated memory is still 2.5 GB. Free memory was 2.4 GB in the beginning and 2.3 GB in the end (delta: 96.6 MB). Peak memory consumption was 96.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 17497.25 ms. Allocated memory was 2.5 GB in the beginning and 2.9 GB in the end (delta: 361.8 MB). Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 2.7 MB). Peak memory consumption was 955.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 205782.27 ms. Allocated memory was 2.9 GB in the beginning and 3.3 GB in the end (delta: 422.6 MB). Free memory was 2.3 GB in the beginning and 1.8 GB in the end (delta: 476.1 MB). Peak memory consumption was 898.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 142]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 142). Cancelled while BasicCegarLoop was constructing difference of abstraction (256304states) and FLOYD_HOARE automaton (currently 14 states, 9 states before enhancement), while ReachableStatesComputation was computing reachable states (60752 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 1778 locations, 1 error locations. TIMEOUT Result, 205.6s OverallTime, 9 OverallIterations, 4 TraceHistogramMax, 182.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 6155 SDtfs, 42477 SDslu, 4876 SDs, 0 SdLazy, 73355 SolverSat, 17612 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 152.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4462 GetRequests, 4378 SyntacticMatches, 11 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 4.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=256304occurred in iteration=8, 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: 10.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 3862 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 2.3s SatisfiabilityAnalysisTime, 8.7s InterpolantComputationTime, 4282 NumberOfCodeBlocks, 4282 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 6450 ConstructedInterpolants, 0 QuantifiedInterpolants, 6051878 SizeOfPredicates, 4 NumberOfNonLiveVariables, 3598 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 21 InterpolantComputations, 9 PerfectInterpolantSequences, 4343/5343 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/Problem19_label49_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-14_18-30-11-700.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem19_label49_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-14_18-30-11-700.csv Completed graceful shutdown