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/Problem18_label26_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-14 18:12:18,704 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-14 18:12:18,707 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-14 18:12:18,721 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-14 18:12:18,721 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-14 18:12:18,722 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-14 18:12:18,723 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-14 18:12:18,725 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-14 18:12:18,727 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-14 18:12:18,728 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-14 18:12:18,729 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-14 18:12:18,729 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-14 18:12:18,730 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-14 18:12:18,731 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-14 18:12:18,732 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-14 18:12:18,733 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-14 18:12:18,734 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-14 18:12:18,736 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-14 18:12:18,740 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-14 18:12:18,741 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-14 18:12:18,745 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-14 18:12:18,746 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-14 18:12:18,754 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-14 18:12:18,754 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-14 18:12:18,754 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-14 18:12:18,757 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-14 18:12:18,758 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-14 18:12:18,761 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-14 18:12:18,762 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-14 18:12:18,763 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-14 18:12:18,763 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-14 18:12:18,767 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-14 18:12:18,768 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-14 18:12:18,768 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-14 18:12:18,769 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-14 18:12:18,772 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-14 18:12:18,772 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 18:12:18,803 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-14 18:12:18,803 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-14 18:12:18,804 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-14 18:12:18,804 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-14 18:12:18,805 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-14 18:12:18,805 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-14 18:12:18,805 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-14 18:12:18,805 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-14 18:12:18,805 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-14 18:12:18,806 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-14 18:12:18,806 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-14 18:12:18,807 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-14 18:12:18,807 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-14 18:12:18,808 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-14 18:12:18,808 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-14 18:12:18,808 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-14 18:12:18,808 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-14 18:12:18,808 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-14 18:12:18,809 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-14 18:12:18,809 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-14 18:12:18,809 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-14 18:12:18,809 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-14 18:12:18,811 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-14 18:12:18,811 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 18:12:18,811 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-14 18:12:18,811 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-14 18:12:18,812 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-14 18:12:18,812 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-14 18:12:18,812 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-14 18:12:18,812 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-14 18:12:18,812 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-14 18:12:18,813 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-14 18:12:18,813 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-14 18:12:18,870 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-14 18:12:18,883 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-14 18:12:18,887 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-14 18:12:18,889 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-14 18:12:18,889 INFO L276 PluginConnector]: CDTParser initialized [2018-09-14 18:12:18,890 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label26_true-unreach-call.c [2018-09-14 18:12:19,231 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20a6dca0e/416b510c787441c0bf49531746c508aa/FLAGd86327132 [2018-09-14 18:12:19,666 INFO L277 CDTParser]: Found 1 translation units. [2018-09-14 18:12:19,667 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label26_true-unreach-call.c [2018-09-14 18:12:19,695 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20a6dca0e/416b510c787441c0bf49531746c508aa/FLAGd86327132 [2018-09-14 18:12:19,719 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20a6dca0e/416b510c787441c0bf49531746c508aa [2018-09-14 18:12:19,732 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-14 18:12:19,738 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-14 18:12:19,739 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-14 18:12:19,741 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-14 18:12:19,748 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-14 18:12:19,749 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 06:12:19" (1/1) ... [2018-09-14 18:12:19,753 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7598abde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:12:19, skipping insertion in model container [2018-09-14 18:12:19,753 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 06:12:19" (1/1) ... [2018-09-14 18:12:19,767 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-14 18:12:20,858 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 18:12:20,878 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-14 18:12:21,423 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 18:12:21,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:12:21 WrapperNode [2018-09-14 18:12:21,575 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-14 18:12:21,576 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-14 18:12:21,576 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-14 18:12:21,577 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-14 18:12:21,586 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:12:21" (1/1) ... [2018-09-14 18:12:21,661 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:12:21" (1/1) ... [2018-09-14 18:12:21,773 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-14 18:12:21,773 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-14 18:12:21,773 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-14 18:12:21,773 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-14 18:12:22,158 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:12:21" (1/1) ... [2018-09-14 18:12:22,159 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:12:21" (1/1) ... [2018-09-14 18:12:22,181 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:12:21" (1/1) ... [2018-09-14 18:12:22,181 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:12:21" (1/1) ... [2018-09-14 18:12:22,270 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:12:21" (1/1) ... [2018-09-14 18:12:22,326 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:12:21" (1/1) ... [2018-09-14 18:12:22,353 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:12:21" (1/1) ... [2018-09-14 18:12:22,394 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-14 18:12:22,395 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-14 18:12:22,395 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-14 18:12:22,395 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-14 18:12:22,396 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:12:21" (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 18:12:22,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-14 18:12:22,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-14 18:12:22,478 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-14 18:12:22,478 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-14 18:12:22,478 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-14 18:12:22,479 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-14 18:12:22,479 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-14 18:12:22,479 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-14 18:12:22,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-14 18:12:22,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-14 18:12:22,479 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-14 18:12:22,480 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-14 18:12:30,621 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-14 18:12:30,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 06:12:30 BoogieIcfgContainer [2018-09-14 18:12:30,622 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-14 18:12:30,623 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-14 18:12:30,623 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-14 18:12:30,627 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-14 18:12:30,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 06:12:19" (1/3) ... [2018-09-14 18:12:30,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33d1979f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 06:12:30, skipping insertion in model container [2018-09-14 18:12:30,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:12:21" (2/3) ... [2018-09-14 18:12:30,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33d1979f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 06:12:30, skipping insertion in model container [2018-09-14 18:12:30,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 06:12:30" (3/3) ... [2018-09-14 18:12:30,631 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label26_true-unreach-call.c [2018-09-14 18:12:30,644 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-14 18:12:30,655 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-14 18:12:30,715 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-14 18:12:30,715 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-14 18:12:30,716 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-14 18:12:30,716 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-14 18:12:30,716 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-14 18:12:30,716 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-14 18:12:30,716 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-14 18:12:30,716 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-14 18:12:30,716 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-14 18:12:30,759 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-09-14 18:12:30,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-09-14 18:12:30,775 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:12:30,776 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] [2018-09-14 18:12:30,778 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:12:30,783 INFO L82 PathProgramCache]: Analyzing trace with hash -1427857313, now seen corresponding path program 1 times [2018-09-14 18:12:30,785 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:12:30,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:12:30,839 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:12:30,840 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:12:30,840 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:12:30,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:12:31,402 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 18:12:31,405 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:12:31,405 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-14 18:12:31,406 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:12:31,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 18:12:31,429 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 18:12:31,430 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 18:12:31,433 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-09-14 18:12:38,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:12:38,911 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-09-14 18:12:38,913 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 18:12:38,914 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2018-09-14 18:12:38,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:12:38,964 INFO L225 Difference]: With dead ends: 2251 [2018-09-14 18:12:38,964 INFO L226 Difference]: Without dead ends: 1474 [2018-09-14 18:12:38,978 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 18:12:39,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-09-14 18:12:39,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-09-14 18:12:39,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-09-14 18:12:39,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2801 transitions. [2018-09-14 18:12:39,162 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2801 transitions. Word has length 69 [2018-09-14 18:12:39,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:12:39,163 INFO L480 AbstractCegarLoop]: Abstraction has 1474 states and 2801 transitions. [2018-09-14 18:12:39,163 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 18:12:39,163 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2801 transitions. [2018-09-14 18:12:39,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-09-14 18:12:39,171 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:12:39,172 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, 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] [2018-09-14 18:12:39,172 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:12:39,173 INFO L82 PathProgramCache]: Analyzing trace with hash -1828983656, now seen corresponding path program 1 times [2018-09-14 18:12:39,173 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:12:39,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:12:39,174 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:12:39,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:12:39,175 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:12:39,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:12:39,514 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 18:12:39,564 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:12:39,565 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:12:39,565 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 18:12:39,565 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:12:39,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 18:12:39,568 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 18:12:39,568 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 18:12:39,568 INFO L87 Difference]: Start difference. First operand 1474 states and 2801 transitions. Second operand 6 states. [2018-09-14 18:12:51,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:12:51,403 INFO L93 Difference]: Finished difference Result 4422 states and 8490 transitions. [2018-09-14 18:12:51,403 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 18:12:51,403 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 143 [2018-09-14 18:12:51,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:12:51,424 INFO L225 Difference]: With dead ends: 4422 [2018-09-14 18:12:51,424 INFO L226 Difference]: Without dead ends: 2954 [2018-09-14 18:12:51,429 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 18:12:51,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2954 states. [2018-09-14 18:12:51,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2954 to 2928. [2018-09-14 18:12:51,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2928 states. [2018-09-14 18:12:51,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2928 states to 2928 states and 5031 transitions. [2018-09-14 18:12:51,509 INFO L78 Accepts]: Start accepts. Automaton has 2928 states and 5031 transitions. Word has length 143 [2018-09-14 18:12:51,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:12:51,510 INFO L480 AbstractCegarLoop]: Abstraction has 2928 states and 5031 transitions. [2018-09-14 18:12:51,510 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 18:12:51,510 INFO L276 IsEmpty]: Start isEmpty. Operand 2928 states and 5031 transitions. [2018-09-14 18:12:51,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-09-14 18:12:51,515 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:12:51,515 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, 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] [2018-09-14 18:12:51,515 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:12:51,516 INFO L82 PathProgramCache]: Analyzing trace with hash -867833311, now seen corresponding path program 1 times [2018-09-14 18:12:51,516 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:12:51,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:12:51,517 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:12:51,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:12:51,517 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:12:51,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:12:51,748 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:12:51,749 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:12:51,749 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-14 18:12:51,749 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:12:51,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 18:12:51,750 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 18:12:51,750 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-14 18:12:51,751 INFO L87 Difference]: Start difference. First operand 2928 states and 5031 transitions. Second operand 5 states. [2018-09-14 18:13:02,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:13:02,738 INFO L93 Difference]: Finished difference Result 10270 states and 17665 transitions. [2018-09-14 18:13:02,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 18:13:02,740 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2018-09-14 18:13:02,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:13:02,784 INFO L225 Difference]: With dead ends: 10270 [2018-09-14 18:13:02,784 INFO L226 Difference]: Without dead ends: 7348 [2018-09-14 18:13:02,799 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-14 18:13:02,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7348 states. [2018-09-14 18:13:02,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7348 to 7270. [2018-09-14 18:13:02,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7270 states. [2018-09-14 18:13:02,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7270 states to 7270 states and 10826 transitions. [2018-09-14 18:13:02,987 INFO L78 Accepts]: Start accepts. Automaton has 7270 states and 10826 transitions. Word has length 146 [2018-09-14 18:13:02,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:13:02,988 INFO L480 AbstractCegarLoop]: Abstraction has 7270 states and 10826 transitions. [2018-09-14 18:13:02,988 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 18:13:02,988 INFO L276 IsEmpty]: Start isEmpty. Operand 7270 states and 10826 transitions. [2018-09-14 18:13:02,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-09-14 18:13:02,992 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:13:02,992 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, 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] [2018-09-14 18:13:02,992 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:13:02,993 INFO L82 PathProgramCache]: Analyzing trace with hash -317879939, now seen corresponding path program 1 times [2018-09-14 18:13:02,993 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:13:02,994 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:13:02,994 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:13:02,994 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:13:02,994 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:13:03,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:13:03,179 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:13:03,179 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:13:03,179 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 18:13:03,179 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:13:03,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 18:13:03,180 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 18:13:03,181 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 18:13:03,181 INFO L87 Difference]: Start difference. First operand 7270 states and 10826 transitions. Second operand 4 states. [2018-09-14 18:13:10,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:13:10,166 INFO L93 Difference]: Finished difference Result 25200 states and 39401 transitions. [2018-09-14 18:13:10,167 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 18:13:10,167 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 176 [2018-09-14 18:13:10,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:13:10,265 INFO L225 Difference]: With dead ends: 25200 [2018-09-14 18:13:10,265 INFO L226 Difference]: Without dead ends: 17936 [2018-09-14 18:13:10,309 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 18:13:10,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17936 states. [2018-09-14 18:13:10,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17936 to 17931. [2018-09-14 18:13:10,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17931 states. [2018-09-14 18:13:10,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17931 states to 17931 states and 25605 transitions. [2018-09-14 18:13:10,739 INFO L78 Accepts]: Start accepts. Automaton has 17931 states and 25605 transitions. Word has length 176 [2018-09-14 18:13:10,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:13:10,740 INFO L480 AbstractCegarLoop]: Abstraction has 17931 states and 25605 transitions. [2018-09-14 18:13:10,740 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 18:13:10,740 INFO L276 IsEmpty]: Start isEmpty. Operand 17931 states and 25605 transitions. [2018-09-14 18:13:10,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2018-09-14 18:13:10,776 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:13:10,776 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, 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, 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] [2018-09-14 18:13:10,776 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:13:10,777 INFO L82 PathProgramCache]: Analyzing trace with hash -1372356006, now seen corresponding path program 1 times [2018-09-14 18:13:10,777 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:13:10,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:13:10,778 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:13:10,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:13:10,779 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:13:10,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:13:11,116 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 18:13:11,594 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 186 proven. 191 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2018-09-14 18:13:11,595 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:13:11,595 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 18:13:11,604 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:13:11,604 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:13:11,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:13:11,748 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:13:12,522 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 261 proven. 0 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2018-09-14 18:13:12,522 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:13:13,170 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 186 proven. 191 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2018-09-14 18:13:13,193 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 18:13:13,193 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 12 [2018-09-14 18:13:13,193 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:13:13,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 18:13:13,195 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 18:13:13,195 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2018-09-14 18:13:13,195 INFO L87 Difference]: Start difference. First operand 17931 states and 25605 transitions. Second operand 5 states. [2018-09-14 18:13:19,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:13:19,922 INFO L93 Difference]: Finished difference Result 43772 states and 62602 transitions. [2018-09-14 18:13:19,923 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-14 18:13:19,923 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 403 [2018-09-14 18:13:19,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:13:20,059 INFO L225 Difference]: With dead ends: 43772 [2018-09-14 18:13:20,060 INFO L226 Difference]: Without dead ends: 25847 [2018-09-14 18:13:20,105 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 813 GetRequests, 801 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-09-14 18:13:20,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25847 states. [2018-09-14 18:13:20,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25847 to 25097. [2018-09-14 18:13:20,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25097 states. [2018-09-14 18:13:20,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25097 states to 25097 states and 33540 transitions. [2018-09-14 18:13:20,756 INFO L78 Accepts]: Start accepts. Automaton has 25097 states and 33540 transitions. Word has length 403 [2018-09-14 18:13:20,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:13:20,757 INFO L480 AbstractCegarLoop]: Abstraction has 25097 states and 33540 transitions. [2018-09-14 18:13:20,757 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 18:13:20,757 INFO L276 IsEmpty]: Start isEmpty. Operand 25097 states and 33540 transitions. [2018-09-14 18:13:20,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2018-09-14 18:13:20,798 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:13:20,798 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:13:20,799 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:13:20,799 INFO L82 PathProgramCache]: Analyzing trace with hash 2077118311, now seen corresponding path program 1 times [2018-09-14 18:13:20,799 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:13:20,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:13:20,800 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:13:20,801 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:13:20,801 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:13:20,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:13:21,738 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 245 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:13:21,738 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:13:21,738 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 18:13:21,755 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:13:21,755 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:13:21,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:13:21,871 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:13:22,362 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 245 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:13:22,362 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:13:22,513 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-09-14 18:13:23,569 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 245 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:13:23,591 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:13:23,591 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 4 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 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 18:13:23,608 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:13:23,608 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:13:23,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:13:23,865 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:13:24,329 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 245 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:13:24,330 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:13:24,731 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 245 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:13:24,733 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 18:13:24,733 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 16 [2018-09-14 18:13:24,734 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 18:13:24,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 18:13:24,736 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 18:13:24,736 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2018-09-14 18:13:24,737 INFO L87 Difference]: Start difference. First operand 25097 states and 33540 transitions. Second operand 9 states. [2018-09-14 18:13:41,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:13:41,960 INFO L93 Difference]: Finished difference Result 77787 states and 113801 transitions. [2018-09-14 18:13:41,960 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-14 18:13:41,960 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 447 [2018-09-14 18:13:41,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:13:42,239 INFO L225 Difference]: With dead ends: 77787 [2018-09-14 18:13:42,240 INFO L226 Difference]: Without dead ends: 52696 [2018-09-14 18:13:42,388 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1809 GetRequests, 1785 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=143, Invalid=457, Unknown=0, NotChecked=0, Total=600 [2018-09-14 18:13:42,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52696 states. [2018-09-14 18:13:43,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52696 to 52416. [2018-09-14 18:13:43,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52416 states. [2018-09-14 18:13:44,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52416 states to 52416 states and 69185 transitions. [2018-09-14 18:13:44,104 INFO L78 Accepts]: Start accepts. Automaton has 52416 states and 69185 transitions. Word has length 447 [2018-09-14 18:13:44,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:13:44,105 INFO L480 AbstractCegarLoop]: Abstraction has 52416 states and 69185 transitions. [2018-09-14 18:13:44,105 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 18:13:44,105 INFO L276 IsEmpty]: Start isEmpty. Operand 52416 states and 69185 transitions. [2018-09-14 18:13:44,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2018-09-14 18:13:44,142 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:13:44,143 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, 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, 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] [2018-09-14 18:13:44,143 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:13:44,144 INFO L82 PathProgramCache]: Analyzing trace with hash 1669439166, now seen corresponding path program 1 times [2018-09-14 18:13:44,144 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:13:44,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:13:44,145 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:13:44,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:13:44,145 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:13:44,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:13:44,986 INFO L134 CoverageAnalysis]: Checked inductivity of 531 backedges. 312 proven. 110 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-09-14 18:13:44,986 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:13:44,986 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 18:13:44,996 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:13:44,996 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:13:45,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:13:45,125 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:13:45,709 INFO L134 CoverageAnalysis]: Checked inductivity of 531 backedges. 466 proven. 2 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2018-09-14 18:13:45,710 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:13:46,815 INFO L134 CoverageAnalysis]: Checked inductivity of 531 backedges. 312 proven. 110 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-09-14 18:13:46,836 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:13:46,836 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 6 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 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 18:13:46,853 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:13:46,854 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:13:47,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:13:47,146 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:13:47,731 INFO L134 CoverageAnalysis]: Checked inductivity of 531 backedges. 466 proven. 2 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2018-09-14 18:13:47,731 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:13:48,037 INFO L134 CoverageAnalysis]: Checked inductivity of 531 backedges. 312 proven. 110 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-09-14 18:13:48,039 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 18:13:48,040 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 16 [2018-09-14 18:13:48,040 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 18:13:48,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 18:13:48,042 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 18:13:48,042 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2018-09-14 18:13:48,042 INFO L87 Difference]: Start difference. First operand 52416 states and 69185 transitions. Second operand 9 states. [2018-09-14 18:14:01,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:14:01,875 INFO L93 Difference]: Finished difference Result 135393 states and 222344 transitions. [2018-09-14 18:14:01,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-09-14 18:14:01,876 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 529 [2018-09-14 18:14:01,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:14:02,383 INFO L225 Difference]: With dead ends: 135393 [2018-09-14 18:14:02,384 INFO L226 Difference]: Without dead ends: 73748 [2018-09-14 18:14:03,004 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2142 GetRequests, 2116 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=164, Invalid=538, Unknown=0, NotChecked=0, Total=702 [2018-09-14 18:14:03,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73748 states. [2018-09-14 18:14:04,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73748 to 72390. [2018-09-14 18:14:04,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72390 states. [2018-09-14 18:14:06,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72390 states to 72390 states and 103228 transitions. [2018-09-14 18:14:06,198 INFO L78 Accepts]: Start accepts. Automaton has 72390 states and 103228 transitions. Word has length 529 [2018-09-14 18:14:06,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:14:06,199 INFO L480 AbstractCegarLoop]: Abstraction has 72390 states and 103228 transitions. [2018-09-14 18:14:06,199 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 18:14:06,199 INFO L276 IsEmpty]: Start isEmpty. Operand 72390 states and 103228 transitions. [2018-09-14 18:14:06,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 670 [2018-09-14 18:14:06,290 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:14:06,291 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2018-09-14 18:14:06,291 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:14:06,291 INFO L82 PathProgramCache]: Analyzing trace with hash 163311405, now seen corresponding path program 1 times [2018-09-14 18:14:06,292 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:14:06,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:14:06,293 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:14:06,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:14:06,293 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:14:06,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:14:06,895 INFO L134 CoverageAnalysis]: Checked inductivity of 811 backedges. 257 proven. 0 refuted. 0 times theorem prover too weak. 554 trivial. 0 not checked. [2018-09-14 18:14:06,896 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:14:06,896 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-14 18:14:06,896 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:14:06,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 18:14:06,897 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 18:14:06,897 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 18:14:06,897 INFO L87 Difference]: Start difference. First operand 72390 states and 103228 transitions. Second operand 3 states. [2018-09-14 18:14:14,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:14:14,275 INFO L93 Difference]: Finished difference Result 178572 states and 272870 transitions. [2018-09-14 18:14:14,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 18:14:14,276 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 669 [2018-09-14 18:14:14,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:14:14,918 INFO L225 Difference]: With dead ends: 178572 [2018-09-14 18:14:14,918 INFO L226 Difference]: Without dead ends: 106193 [2018-09-14 18:14:15,432 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 18:14:15,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106193 states. [2018-09-14 18:14:17,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106193 to 101384. [2018-09-14 18:14:17,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101384 states. [2018-09-14 18:14:18,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101384 states to 101384 states and 146011 transitions. [2018-09-14 18:14:18,821 INFO L78 Accepts]: Start accepts. Automaton has 101384 states and 146011 transitions. Word has length 669 [2018-09-14 18:14:18,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:14:18,823 INFO L480 AbstractCegarLoop]: Abstraction has 101384 states and 146011 transitions. [2018-09-14 18:14:18,823 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 18:14:18,823 INFO L276 IsEmpty]: Start isEmpty. Operand 101384 states and 146011 transitions. [2018-09-14 18:14:18,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 721 [2018-09-14 18:14:18,938 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:14:18,939 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 18:14:18,939 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:14:18,940 INFO L82 PathProgramCache]: Analyzing trace with hash -2091448482, now seen corresponding path program 1 times [2018-09-14 18:14:18,940 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:14:18,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:14:18,941 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:14:18,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:14:18,941 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:14:19,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:14:21,328 INFO L134 CoverageAnalysis]: Checked inductivity of 645 backedges. 523 proven. 2 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-09-14 18:14:21,329 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:14:21,329 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 [2018-09-14 18:14:21,337 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:14:21,337 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:14:21,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:14:21,528 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:14:21,805 INFO L134 CoverageAnalysis]: Checked inductivity of 645 backedges. 523 proven. 2 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-09-14 18:14:21,805 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:14:23,047 INFO L134 CoverageAnalysis]: Checked inductivity of 645 backedges. 523 proven. 2 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-09-14 18:14:23,069 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:14:23,069 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 [2018-09-14 18:14:23,084 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:14:23,084 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:14:23,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:14:23,482 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:14:23,729 INFO L134 CoverageAnalysis]: Checked inductivity of 645 backedges. 523 proven. 2 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-09-14 18:14:23,730 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:14:24,796 INFO L134 CoverageAnalysis]: Checked inductivity of 645 backedges. 523 proven. 2 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-09-14 18:14:24,798 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 18:14:24,799 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-14 18:14:24,799 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 18:14:24,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 18:14:24,800 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 18:14:24,800 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-14 18:14:24,801 INFO L87 Difference]: Start difference. First operand 101384 states and 146011 transitions. Second operand 9 states. [2018-09-14 18:14:38,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:14:38,699 INFO L93 Difference]: Finished difference Result 202947 states and 293165 transitions. [2018-09-14 18:14:38,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-14 18:14:38,700 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 720 [2018-09-14 18:14:38,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:14:39,183 INFO L225 Difference]: With dead ends: 202947 [2018-09-14 18:14:39,184 INFO L226 Difference]: Without dead ends: 101574 [2018-09-14 18:14:39,659 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2896 GetRequests, 2875 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2018-09-14 18:14:39,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101574 states. [2018-09-14 18:14:42,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101574 to 101376. [2018-09-14 18:14:42,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101376 states. [2018-09-14 18:14:42,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101376 states to 101376 states and 133638 transitions. [2018-09-14 18:14:42,728 INFO L78 Accepts]: Start accepts. Automaton has 101376 states and 133638 transitions. Word has length 720 [2018-09-14 18:14:42,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:14:42,729 INFO L480 AbstractCegarLoop]: Abstraction has 101376 states and 133638 transitions. [2018-09-14 18:14:42,729 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 18:14:42,730 INFO L276 IsEmpty]: Start isEmpty. Operand 101376 states and 133638 transitions. [2018-09-14 18:14:42,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 814 [2018-09-14 18:14:42,806 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:14:42,807 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 18:14:42,810 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:14:42,811 INFO L82 PathProgramCache]: Analyzing trace with hash -558633139, now seen corresponding path program 1 times [2018-09-14 18:14:42,811 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:14:42,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:14:42,812 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:14:42,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:14:42,812 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:14:42,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:14:43,813 INFO L134 CoverageAnalysis]: Checked inductivity of 955 backedges. 688 proven. 2 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2018-09-14 18:14:43,813 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:14:43,813 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 [2018-09-14 18:14:43,826 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:14:43,826 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:14:44,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:14:44,038 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:14:44,865 INFO L134 CoverageAnalysis]: Checked inductivity of 955 backedges. 688 proven. 2 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2018-09-14 18:14:44,866 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:14:45,376 INFO L134 CoverageAnalysis]: Checked inductivity of 955 backedges. 688 proven. 2 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2018-09-14 18:14:45,399 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:14:45,399 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 10 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 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 18:14:45,417 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:14:45,417 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:14:45,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:14:45,901 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:14:46,542 INFO L134 CoverageAnalysis]: Checked inductivity of 955 backedges. 688 proven. 2 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2018-09-14 18:14:46,542 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:14:47,105 INFO L134 CoverageAnalysis]: Checked inductivity of 955 backedges. 688 proven. 2 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2018-09-14 18:14:47,108 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 18:14:47,108 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-14 18:14:47,109 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 18:14:47,110 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 18:14:47,110 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 18:14:47,110 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-14 18:14:47,111 INFO L87 Difference]: Start difference. First operand 101376 states and 133638 transitions. Second operand 9 states. [2018-09-14 18:15:03,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:15:03,360 INFO L93 Difference]: Finished difference Result 225738 states and 342403 transitions. [2018-09-14 18:15:03,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-09-14 18:15:03,360 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 813 [2018-09-14 18:15:03,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:15:04,321 INFO L225 Difference]: With dead ends: 225738 [2018-09-14 18:15:04,322 INFO L226 Difference]: Without dead ends: 113115 [2018-09-14 18:15:09,590 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3282 GetRequests, 3253 SyntacticMatches, 7 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=172, Invalid=380, Unknown=0, NotChecked=0, Total=552 [2018-09-14 18:15:09,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113115 states. [2018-09-14 18:15:12,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113115 to 108993. [2018-09-14 18:15:12,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108993 states. [2018-09-14 18:15:12,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108993 states to 108993 states and 144446 transitions. [2018-09-14 18:15:12,868 INFO L78 Accepts]: Start accepts. Automaton has 108993 states and 144446 transitions. Word has length 813 [2018-09-14 18:15:12,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:15:12,869 INFO L480 AbstractCegarLoop]: Abstraction has 108993 states and 144446 transitions. [2018-09-14 18:15:12,870 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 18:15:12,870 INFO L276 IsEmpty]: Start isEmpty. Operand 108993 states and 144446 transitions. [2018-09-14 18:15:13,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1048 [2018-09-14 18:15:13,534 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:15:13,535 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 18:15:13,535 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:15:13,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1038610283, now seen corresponding path program 1 times [2018-09-14 18:15:13,536 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:15:13,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:15:13,537 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:15:13,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:15:13,537 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:15:13,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:15:13,899 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 18:15:15,055 INFO L134 CoverageAnalysis]: Checked inductivity of 1294 backedges. 248 proven. 354 refuted. 0 times theorem prover too weak. 692 trivial. 0 not checked. [2018-09-14 18:15:15,056 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:15:15,056 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 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 18:15:15,072 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:15:15,072 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:15:15,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:15:15,317 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:15:16,631 INFO L134 CoverageAnalysis]: Checked inductivity of 1294 backedges. 422 proven. 0 refuted. 0 times theorem prover too weak. 872 trivial. 0 not checked. [2018-09-14 18:15:16,631 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:15:17,587 INFO L134 CoverageAnalysis]: Checked inductivity of 1294 backedges. 248 proven. 255 refuted. 0 times theorem prover too weak. 791 trivial. 0 not checked. [2018-09-14 18:15:17,607 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 18:15:17,608 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 3] total 9 [2018-09-14 18:15:17,608 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:15:17,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 18:15:17,609 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 18:15:17,609 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2018-09-14 18:15:17,609 INFO L87 Difference]: Start difference. First operand 108993 states and 144446 transitions. Second operand 3 states. [2018-09-14 18:15:23,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:15:23,909 INFO L93 Difference]: Finished difference Result 227416 states and 302975 transitions. [2018-09-14 18:15:23,910 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 18:15:23,910 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1047 [2018-09-14 18:15:23,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:15:24,520 INFO L225 Difference]: With dead ends: 227416 [2018-09-14 18:15:24,521 INFO L226 Difference]: Without dead ends: 111194 [2018-09-14 18:15:25,095 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2101 GetRequests, 2093 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2018-09-14 18:15:25,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111194 states. [2018-09-14 18:15:27,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111194 to 110456. [2018-09-14 18:15:27,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110456 states. [2018-09-14 18:15:28,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110456 states to 110456 states and 145025 transitions. [2018-09-14 18:15:28,395 INFO L78 Accepts]: Start accepts. Automaton has 110456 states and 145025 transitions. Word has length 1047 [2018-09-14 18:15:28,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:15:28,395 INFO L480 AbstractCegarLoop]: Abstraction has 110456 states and 145025 transitions. [2018-09-14 18:15:28,395 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 18:15:28,395 INFO L276 IsEmpty]: Start isEmpty. Operand 110456 states and 145025 transitions. [2018-09-14 18:15:28,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1047 [2018-09-14 18:15:28,535 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:15:28,535 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 18:15:28,536 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:15:28,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1496210356, now seen corresponding path program 1 times [2018-09-14 18:15:28,536 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:15:28,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:15:28,537 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:15:28,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:15:28,537 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:15:28,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:15:31,105 INFO L134 CoverageAnalysis]: Checked inductivity of 1294 backedges. 593 proven. 210 refuted. 0 times theorem prover too weak. 491 trivial. 0 not checked. [2018-09-14 18:15:31,106 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:15:31,106 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 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 18:15:31,117 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:15:31,117 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:15:31,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:15:31,386 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:15:32,803 INFO L134 CoverageAnalysis]: Checked inductivity of 1294 backedges. 1109 proven. 2 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2018-09-14 18:15:32,803 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:15:33,695 INFO L134 CoverageAnalysis]: Checked inductivity of 1294 backedges. 593 proven. 210 refuted. 0 times theorem prover too weak. 491 trivial. 0 not checked. [2018-09-14 18:15:33,717 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:15:33,717 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 13 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 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 18:15:33,732 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:15:33,732 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:15:34,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:15:34,297 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:15:34,867 INFO L134 CoverageAnalysis]: Checked inductivity of 1294 backedges. 1109 proven. 2 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2018-09-14 18:15:34,867 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:15:35,520 INFO L134 CoverageAnalysis]: Checked inductivity of 1294 backedges. 593 proven. 210 refuted. 0 times theorem prover too weak. 491 trivial. 0 not checked. [2018-09-14 18:15:35,522 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 18:15:35,523 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 15 [2018-09-14 18:15:35,523 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 18:15:35,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 18:15:35,525 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 18:15:35,526 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2018-09-14 18:15:35,526 INFO L87 Difference]: Start difference. First operand 110456 states and 145025 transitions. Second operand 9 states. Received shutdown request... [2018-09-14 18:15:53,330 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-09-14 18:15:53,331 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-14 18:15:53,335 WARN L206 ceAbstractionStarter]: Timeout [2018-09-14 18:15:53,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 06:15:53 BoogieIcfgContainer [2018-09-14 18:15:53,336 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-14 18:15:53,337 INFO L168 Benchmark]: Toolchain (without parser) took 213604.51 ms. Allocated memory was 1.5 GB in the beginning and 4.6 GB in the end (delta: 3.0 GB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -359.8 MB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. [2018-09-14 18:15:53,338 INFO L168 Benchmark]: CDTParser took 0.20 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 18:15:53,338 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1836.14 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 179.7 MB). Peak memory consumption was 179.7 MB. Max. memory is 7.1 GB. [2018-09-14 18:15:53,339 INFO L168 Benchmark]: Boogie Procedure Inliner took 196.69 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-09-14 18:15:53,340 INFO L168 Benchmark]: Boogie Preprocessor took 621.69 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 870.8 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 85.7 MB. Max. memory is 7.1 GB. [2018-09-14 18:15:53,341 INFO L168 Benchmark]: RCFGBuilder took 8227.32 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.8 GB in the end (delta: 491.0 MB). Peak memory consumption was 491.0 MB. Max. memory is 7.1 GB. [2018-09-14 18:15:53,341 INFO L168 Benchmark]: TraceAbstraction took 202712.75 ms. Allocated memory was 2.4 GB in the beginning and 4.6 GB in the end (delta: 2.1 GB). Free memory was 1.8 GB in the beginning and 1.8 GB in the end (delta: 33.1 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-09-14 18:15:53,346 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1836.14 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 179.7 MB). Peak memory consumption was 179.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 196.69 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 621.69 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 870.8 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 85.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8227.32 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.8 GB in the end (delta: 491.0 MB). Peak memory consumption was 491.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 202712.75 ms. Allocated memory was 2.4 GB in the beginning and 4.6 GB in the end (delta: 2.1 GB). Free memory was 1.8 GB in the beginning and 1.8 GB in the end (delta: 33.1 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 195]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 195). Cancelled while BasicCegarLoop was constructing difference of abstraction (110456states) and FLOYD_HOARE automaton (currently 41 states, 9 states before enhancement), while ReachableStatesComputation was computing reachable states (220658 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 202.6s OverallTime, 12 OverallIterations, 5 TraceHistogramMax, 148.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3531 SDtfs, 38464 SDslu, 2203 SDs, 0 SdLazy, 71326 SolverSat, 16690 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 95.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17332 GetRequests, 17142 SyntacticMatches, 23 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1072 ImplicationChecksByTransitivity, 8.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=110456occurred in iteration=11, 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: 19.4s AutomataMinimizationTime, 11 MinimizatonAttempts, 12364 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.5s SsaConstructionTime, 3.3s SatisfiabilityAnalysisTime, 23.9s InterpolantComputationTime, 14768 NumberOfCodeBlocks, 14768 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 23292 ConstructedInterpolants, 0 QuantifiedInterpolants, 42198116 SizeOfPredicates, 5 NumberOfNonLiveVariables, 11573 ConjunctsInSsa, 70 ConjunctsInUnsatCore, 36 InterpolantComputations, 7 PerfectInterpolantSequences, 22681/24670 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/Problem18_label26_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-14_18-15-53-361.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem18_label26_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-14_18-15-53-361.csv Completed graceful shutdown