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/Problem13_label01_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-14 17:27:44,691 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-14 17:27:44,692 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-14 17:27:44,704 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-14 17:27:44,705 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-14 17:27:44,706 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-14 17:27:44,707 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-14 17:27:44,709 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-14 17:27:44,711 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-14 17:27:44,712 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-14 17:27:44,713 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-14 17:27:44,713 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-14 17:27:44,714 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-14 17:27:44,715 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-14 17:27:44,716 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-14 17:27:44,717 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-14 17:27:44,718 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-14 17:27:44,720 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-14 17:27:44,722 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-14 17:27:44,723 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-14 17:27:44,724 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-14 17:27:44,725 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-14 17:27:44,728 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-14 17:27:44,728 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-14 17:27:44,728 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-14 17:27:44,729 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-14 17:27:44,730 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-14 17:27:44,731 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-14 17:27:44,732 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-14 17:27:44,733 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-14 17:27:44,733 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-14 17:27:44,734 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-14 17:27:44,734 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-14 17:27:44,734 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-14 17:27:44,735 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-14 17:27:44,736 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-14 17:27:44,736 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 17:27:44,751 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-14 17:27:44,752 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-14 17:27:44,753 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-14 17:27:44,753 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-14 17:27:44,753 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-14 17:27:44,753 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-14 17:27:44,753 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-14 17:27:44,754 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-14 17:27:44,754 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-14 17:27:44,754 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-14 17:27:44,754 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-14 17:27:44,755 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-14 17:27:44,755 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-14 17:27:44,755 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-14 17:27:44,756 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-14 17:27:44,756 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-14 17:27:44,756 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-14 17:27:44,756 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-14 17:27:44,756 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-14 17:27:44,757 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-14 17:27:44,757 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-14 17:27:44,757 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-14 17:27:44,757 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-14 17:27:44,757 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 17:27:44,758 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-14 17:27:44,758 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-14 17:27:44,758 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-14 17:27:44,758 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-14 17:27:44,758 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-14 17:27:44,759 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-14 17:27:44,759 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-14 17:27:44,759 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-14 17:27:44,759 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-14 17:27:44,801 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-14 17:27:44,815 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-14 17:27:44,824 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-14 17:27:44,825 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-14 17:27:44,826 INFO L276 PluginConnector]: CDTParser initialized [2018-09-14 17:27:44,826 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label01_true-unreach-call.c [2018-09-14 17:27:45,192 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03911d7c7/d6b081d5fa8846da9babc631290612ad/FLAGc076244a6 [2018-09-14 17:27:45,699 INFO L277 CDTParser]: Found 1 translation units. [2018-09-14 17:27:45,700 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label01_true-unreach-call.c [2018-09-14 17:27:45,738 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03911d7c7/d6b081d5fa8846da9babc631290612ad/FLAGc076244a6 [2018-09-14 17:27:45,759 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03911d7c7/d6b081d5fa8846da9babc631290612ad [2018-09-14 17:27:45,771 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-14 17:27:45,777 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-14 17:27:45,781 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-14 17:27:45,782 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-14 17:27:45,791 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-14 17:27:45,792 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 05:27:45" (1/1) ... [2018-09-14 17:27:45,796 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76e3dc9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:27:45, skipping insertion in model container [2018-09-14 17:27:45,796 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 05:27:45" (1/1) ... [2018-09-14 17:27:45,809 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-14 17:27:47,320 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 17:27:47,340 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-14 17:27:48,096 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 17:27:48,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:27:48 WrapperNode [2018-09-14 17:27:48,463 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-14 17:27:48,464 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-14 17:27:48,465 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-14 17:27:48,465 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-14 17:27:48,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:27:48" (1/1) ... [2018-09-14 17:27:48,608 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:27:48" (1/1) ... [2018-09-14 17:27:48,777 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-14 17:27:48,778 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-14 17:27:48,778 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-14 17:27:48,778 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-14 17:27:49,612 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:27:48" (1/1) ... [2018-09-14 17:27:49,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:27:48" (1/1) ... [2018-09-14 17:27:49,666 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:27:48" (1/1) ... [2018-09-14 17:27:49,667 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:27:48" (1/1) ... [2018-09-14 17:27:49,825 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:27:48" (1/1) ... [2018-09-14 17:27:49,869 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:27:48" (1/1) ... [2018-09-14 17:27:49,939 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:27:48" (1/1) ... [2018-09-14 17:27:50,000 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-14 17:27:50,001 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-14 17:27:50,001 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-14 17:27:50,001 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-14 17:27:50,002 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:27:48" (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 17:27:50,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-14 17:27:50,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-14 17:27:50,083 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-09-14 17:27:50,084 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-09-14 17:27:50,084 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-14 17:27:50,084 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-14 17:27:50,084 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-14 17:27:50,084 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-14 17:27:50,084 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-14 17:27:50,085 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-14 17:27:50,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-14 17:27:50,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-14 17:27:50,085 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-14 17:27:50,085 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-14 17:28:00,584 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-14 17:28:00,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 05:28:00 BoogieIcfgContainer [2018-09-14 17:28:00,585 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-14 17:28:00,586 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-14 17:28:00,587 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-14 17:28:00,590 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-14 17:28:00,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 05:27:45" (1/3) ... [2018-09-14 17:28:00,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d982f5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 05:28:00, skipping insertion in model container [2018-09-14 17:28:00,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:27:48" (2/3) ... [2018-09-14 17:28:00,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d982f5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 05:28:00, skipping insertion in model container [2018-09-14 17:28:00,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 05:28:00" (3/3) ... [2018-09-14 17:28:00,594 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label01_true-unreach-call.c [2018-09-14 17:28:00,605 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-14 17:28:00,616 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-14 17:28:00,682 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-14 17:28:00,683 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-14 17:28:00,683 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-14 17:28:00,683 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-14 17:28:00,683 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-14 17:28:00,683 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-14 17:28:00,683 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-14 17:28:00,683 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-14 17:28:00,684 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-14 17:28:00,727 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-09-14 17:28:00,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-09-14 17:28:00,737 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:28:00,738 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] [2018-09-14 17:28:00,739 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:28:00,745 INFO L82 PathProgramCache]: Analyzing trace with hash 980545676, now seen corresponding path program 1 times [2018-09-14 17:28:00,748 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:28:00,808 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:28:00,808 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:28:00,808 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:28:00,809 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:28:00,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:28:01,262 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:28:01,397 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 17:28:01,400 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:28:01,400 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-14 17:28:01,400 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:28:01,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 17:28:01,427 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 17:28:01,430 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 17:28:01,434 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-09-14 17:28:09,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:28:09,982 INFO L93 Difference]: Finished difference Result 3097 states and 5707 transitions. [2018-09-14 17:28:09,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 17:28:09,983 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2018-09-14 17:28:09,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:28:10,020 INFO L225 Difference]: With dead ends: 3097 [2018-09-14 17:28:10,020 INFO L226 Difference]: Without dead ends: 1975 [2018-09-14 17:28:10,040 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 17:28:10,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1975 states. [2018-09-14 17:28:10,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1975 to 1974. [2018-09-14 17:28:10,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1974 states. [2018-09-14 17:28:10,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1974 states to 1974 states and 3284 transitions. [2018-09-14 17:28:10,247 INFO L78 Accepts]: Start accepts. Automaton has 1974 states and 3284 transitions. Word has length 56 [2018-09-14 17:28:10,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:28:10,248 INFO L480 AbstractCegarLoop]: Abstraction has 1974 states and 3284 transitions. [2018-09-14 17:28:10,248 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 17:28:10,249 INFO L276 IsEmpty]: Start isEmpty. Operand 1974 states and 3284 transitions. [2018-09-14 17:28:10,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-09-14 17:28:10,256 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:28:10,257 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:28:10,257 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:28:10,258 INFO L82 PathProgramCache]: Analyzing trace with hash 1287580412, now seen corresponding path program 1 times [2018-09-14 17:28:10,258 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:28:10,259 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:28:10,259 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:28:10,260 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:28:10,260 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:28:10,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:28:10,731 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:28:10,732 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:28:10,732 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-14 17:28:10,732 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:28:10,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:28:10,734 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:28:10,735 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-14 17:28:10,735 INFO L87 Difference]: Start difference. First operand 1974 states and 3284 transitions. Second operand 5 states. [2018-09-14 17:28:32,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:28:32,296 INFO L93 Difference]: Finished difference Result 5736 states and 9691 transitions. [2018-09-14 17:28:32,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 17:28:32,298 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2018-09-14 17:28:32,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:28:32,323 INFO L225 Difference]: With dead ends: 5736 [2018-09-14 17:28:32,324 INFO L226 Difference]: Without dead ends: 3768 [2018-09-14 17:28:32,330 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-14 17:28:32,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3768 states. [2018-09-14 17:28:32,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3768 to 3686. [2018-09-14 17:28:32,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3686 states. [2018-09-14 17:28:32,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3686 states to 3686 states and 5660 transitions. [2018-09-14 17:28:32,473 INFO L78 Accepts]: Start accepts. Automaton has 3686 states and 5660 transitions. Word has length 132 [2018-09-14 17:28:32,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:28:32,474 INFO L480 AbstractCegarLoop]: Abstraction has 3686 states and 5660 transitions. [2018-09-14 17:28:32,474 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:28:32,474 INFO L276 IsEmpty]: Start isEmpty. Operand 3686 states and 5660 transitions. [2018-09-14 17:28:32,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-09-14 17:28:32,488 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:28:32,489 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:28:32,489 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:28:32,489 INFO L82 PathProgramCache]: Analyzing trace with hash 800617696, now seen corresponding path program 1 times [2018-09-14 17:28:32,491 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:28:32,493 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:28:32,493 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:28:32,493 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:28:32,493 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:28:32,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:28:32,736 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:28:32,736 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:28:32,736 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-14 17:28:32,737 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:28:32,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:28:32,738 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:28:32,738 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-14 17:28:32,738 INFO L87 Difference]: Start difference. First operand 3686 states and 5660 transitions. Second operand 5 states. [2018-09-14 17:29:00,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:29:00,230 INFO L93 Difference]: Finished difference Result 13666 states and 21761 transitions. [2018-09-14 17:29:00,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 17:29:00,233 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2018-09-14 17:29:00,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:29:00,295 INFO L225 Difference]: With dead ends: 13666 [2018-09-14 17:29:00,295 INFO L226 Difference]: Without dead ends: 9986 [2018-09-14 17:29:00,322 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 17:29:00,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9986 states. [2018-09-14 17:29:00,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9986 to 9796. [2018-09-14 17:29:00,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9796 states. [2018-09-14 17:29:00,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9796 states to 9796 states and 14501 transitions. [2018-09-14 17:29:00,593 INFO L78 Accepts]: Start accepts. Automaton has 9796 states and 14501 transitions. Word has length 146 [2018-09-14 17:29:00,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:29:00,594 INFO L480 AbstractCegarLoop]: Abstraction has 9796 states and 14501 transitions. [2018-09-14 17:29:00,594 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:29:00,594 INFO L276 IsEmpty]: Start isEmpty. Operand 9796 states and 14501 transitions. [2018-09-14 17:29:00,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-09-14 17:29:00,599 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:29:00,600 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:29:00,600 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:29:00,600 INFO L82 PathProgramCache]: Analyzing trace with hash -2020564548, now seen corresponding path program 1 times [2018-09-14 17:29:00,600 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:29:00,601 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:29:00,602 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:29:00,602 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:29:00,602 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:29:00,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:29:00,881 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:29:01,140 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:29:01,140 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:29:01,140 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 17:29:01,141 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:29:01,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:29:01,141 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:29:01,142 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:29:01,142 INFO L87 Difference]: Start difference. First operand 9796 states and 14501 transitions. Second operand 6 states. [2018-09-14 17:29:14,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:29:14,466 INFO L93 Difference]: Finished difference Result 34190 states and 53778 transitions. [2018-09-14 17:29:14,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:29:14,469 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 164 [2018-09-14 17:29:14,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:29:14,601 INFO L225 Difference]: With dead ends: 34190 [2018-09-14 17:29:14,601 INFO L226 Difference]: Without dead ends: 24400 [2018-09-14 17:29:14,673 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 17:29:14,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24400 states. [2018-09-14 17:29:15,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24400 to 24167. [2018-09-14 17:29:15,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24167 states. [2018-09-14 17:29:15,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24167 states to 24167 states and 34058 transitions. [2018-09-14 17:29:15,465 INFO L78 Accepts]: Start accepts. Automaton has 24167 states and 34058 transitions. Word has length 164 [2018-09-14 17:29:15,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:29:15,465 INFO L480 AbstractCegarLoop]: Abstraction has 24167 states and 34058 transitions. [2018-09-14 17:29:15,465 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:29:15,466 INFO L276 IsEmpty]: Start isEmpty. Operand 24167 states and 34058 transitions. [2018-09-14 17:29:15,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2018-09-14 17:29:15,472 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:29:15,472 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:29:15,472 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:29:15,476 INFO L82 PathProgramCache]: Analyzing trace with hash -744065737, now seen corresponding path program 1 times [2018-09-14 17:29:15,476 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:29:15,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:29:15,477 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:29:15,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:29:15,477 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:29:15,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:29:15,785 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:29:16,097 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:29:16,097 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:29:16,097 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 17:29:16,098 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:29:16,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:29:16,098 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:29:16,098 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:29:16,099 INFO L87 Difference]: Start difference. First operand 24167 states and 34058 transitions. Second operand 6 states. [2018-09-14 17:29:30,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:29:30,119 INFO L93 Difference]: Finished difference Result 62340 states and 97846 transitions. [2018-09-14 17:29:30,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:29:30,127 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 175 [2018-09-14 17:29:30,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:29:30,331 INFO L225 Difference]: With dead ends: 62340 [2018-09-14 17:29:30,331 INFO L226 Difference]: Without dead ends: 38179 [2018-09-14 17:29:30,404 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 17:29:30,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38179 states. [2018-09-14 17:29:31,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38179 to 37982. [2018-09-14 17:29:31,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37982 states. [2018-09-14 17:29:31,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37982 states to 37982 states and 54443 transitions. [2018-09-14 17:29:31,589 INFO L78 Accepts]: Start accepts. Automaton has 37982 states and 54443 transitions. Word has length 175 [2018-09-14 17:29:31,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:29:31,590 INFO L480 AbstractCegarLoop]: Abstraction has 37982 states and 54443 transitions. [2018-09-14 17:29:31,590 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:29:31,590 INFO L276 IsEmpty]: Start isEmpty. Operand 37982 states and 54443 transitions. [2018-09-14 17:29:31,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2018-09-14 17:29:31,597 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:29:31,598 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:29:31,598 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:29:31,598 INFO L82 PathProgramCache]: Analyzing trace with hash 787887912, now seen corresponding path program 1 times [2018-09-14 17:29:31,598 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:29:31,599 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:29:31,599 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:29:31,600 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:29:31,600 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:29:31,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:29:31,908 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:29:32,326 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:29:32,327 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:29:32,327 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 17:29:32,327 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:29:32,327 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:29:32,328 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:29:32,328 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:29:32,328 INFO L87 Difference]: Start difference. First operand 37982 states and 54443 transitions. Second operand 6 states. [2018-09-14 17:29:41,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:29:41,479 INFO L93 Difference]: Finished difference Result 83943 states and 123850 transitions. [2018-09-14 17:29:41,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:29:41,479 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 203 [2018-09-14 17:29:41,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:29:41,645 INFO L225 Difference]: With dead ends: 83943 [2018-09-14 17:29:41,646 INFO L226 Difference]: Without dead ends: 45967 [2018-09-14 17:29:41,735 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 17:29:41,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45967 states. [2018-09-14 17:29:42,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45967 to 45865. [2018-09-14 17:29:42,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45865 states. [2018-09-14 17:29:42,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45865 states to 45865 states and 62670 transitions. [2018-09-14 17:29:42,622 INFO L78 Accepts]: Start accepts. Automaton has 45865 states and 62670 transitions. Word has length 203 [2018-09-14 17:29:42,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:29:42,623 INFO L480 AbstractCegarLoop]: Abstraction has 45865 states and 62670 transitions. [2018-09-14 17:29:42,623 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:29:42,623 INFO L276 IsEmpty]: Start isEmpty. Operand 45865 states and 62670 transitions. [2018-09-14 17:29:42,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2018-09-14 17:29:42,637 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:29:42,638 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, 2, 2, 2, 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] [2018-09-14 17:29:42,638 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:29:42,638 INFO L82 PathProgramCache]: Analyzing trace with hash 334178010, now seen corresponding path program 1 times [2018-09-14 17:29:42,638 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:29:42,639 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:29:42,639 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:29:42,639 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:29:42,640 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:29:42,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:29:43,044 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 172 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:29:43,044 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:29:43,045 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 17:29:43,054 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:29:43,055 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:29:43,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:29:43,167 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:29:43,452 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2018-09-14 17:29:43,453 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:29:43,646 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 98 proven. 2 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-09-14 17:29:43,668 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:29:43,668 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6, 3] total 8 [2018-09-14 17:29:43,668 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:29:43,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 17:29:43,669 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 17:29:43,669 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-09-14 17:29:43,670 INFO L87 Difference]: Start difference. First operand 45865 states and 62670 transitions. Second operand 3 states. [2018-09-14 17:29:54,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:29:54,142 INFO L93 Difference]: Finished difference Result 113617 states and 159838 transitions. [2018-09-14 17:29:54,147 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 17:29:54,148 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 253 [2018-09-14 17:29:54,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:29:54,516 INFO L225 Difference]: With dead ends: 113617 [2018-09-14 17:29:54,516 INFO L226 Difference]: Without dead ends: 67758 [2018-09-14 17:29:54,810 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 511 GetRequests, 505 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-09-14 17:29:54,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67758 states. [2018-09-14 17:29:56,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67758 to 66248. [2018-09-14 17:29:56,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66248 states. [2018-09-14 17:29:56,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66248 states to 66248 states and 86887 transitions. [2018-09-14 17:29:56,341 INFO L78 Accepts]: Start accepts. Automaton has 66248 states and 86887 transitions. Word has length 253 [2018-09-14 17:29:56,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:29:56,342 INFO L480 AbstractCegarLoop]: Abstraction has 66248 states and 86887 transitions. [2018-09-14 17:29:56,342 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 17:29:56,342 INFO L276 IsEmpty]: Start isEmpty. Operand 66248 states and 86887 transitions. [2018-09-14 17:29:56,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-09-14 17:29:56,362 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:29:56,362 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 17:29:56,363 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:29:56,363 INFO L82 PathProgramCache]: Analyzing trace with hash -677749240, now seen corresponding path program 1 times [2018-09-14 17:29:56,363 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:29:56,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:29:56,364 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:29:56,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:29:56,364 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:29:56,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:29:56,699 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-09-14 17:29:56,700 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:29:56,700 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 17:29:56,700 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:29:56,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 17:29:56,701 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 17:29:56,701 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:29:56,701 INFO L87 Difference]: Start difference. First operand 66248 states and 86887 transitions. Second operand 4 states. [2018-09-14 17:30:08,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:30:08,955 INFO L93 Difference]: Finished difference Result 181259 states and 247112 transitions. [2018-09-14 17:30:08,956 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 17:30:08,956 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 258 [2018-09-14 17:30:08,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:30:09,468 INFO L225 Difference]: With dead ends: 181259 [2018-09-14 17:30:09,469 INFO L226 Difference]: Without dead ends: 115017 [2018-09-14 17:30:09,736 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:30:09,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115017 states. [2018-09-14 17:30:12,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115017 to 114984. [2018-09-14 17:30:12,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114984 states. [2018-09-14 17:30:12,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114984 states to 114984 states and 148716 transitions. [2018-09-14 17:30:12,478 INFO L78 Accepts]: Start accepts. Automaton has 114984 states and 148716 transitions. Word has length 258 [2018-09-14 17:30:12,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:30:12,479 INFO L480 AbstractCegarLoop]: Abstraction has 114984 states and 148716 transitions. [2018-09-14 17:30:12,479 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 17:30:12,479 INFO L276 IsEmpty]: Start isEmpty. Operand 114984 states and 148716 transitions. [2018-09-14 17:30:12,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2018-09-14 17:30:12,507 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:30:12,507 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 17:30:12,508 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:30:12,508 INFO L82 PathProgramCache]: Analyzing trace with hash 2132412565, now seen corresponding path program 1 times [2018-09-14 17:30:12,508 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:30:12,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:30:12,509 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:30:12,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:30:12,509 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:30:12,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:30:12,827 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 9 proven. 92 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-09-14 17:30:12,828 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:30:12,828 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 17:30:12,835 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:30:12,836 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:30:12,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:30:12,932 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:30:13,201 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-09-14 17:30:13,201 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:30:13,958 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 98 proven. 89 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:30:13,979 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:30:13,980 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 5] total 12 [2018-09-14 17:30:13,980 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:30:13,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:30:13,981 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:30:13,981 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2018-09-14 17:30:13,982 INFO L87 Difference]: Start difference. First operand 114984 states and 148716 transitions. Second operand 5 states. [2018-09-14 17:30:38,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:30:38,691 INFO L93 Difference]: Finished difference Result 240099 states and 315434 transitions. [2018-09-14 17:30:38,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:30:38,692 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 297 [2018-09-14 17:30:38,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:30:39,247 INFO L225 Difference]: With dead ends: 240099 [2018-09-14 17:30:39,247 INFO L226 Difference]: Without dead ends: 124316 [2018-09-14 17:30:39,487 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 606 GetRequests, 592 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2018-09-14 17:30:39,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124316 states. [2018-09-14 17:30:42,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124316 to 121404. [2018-09-14 17:30:42,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121404 states. [2018-09-14 17:30:42,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121404 states to 121404 states and 159320 transitions. [2018-09-14 17:30:42,376 INFO L78 Accepts]: Start accepts. Automaton has 121404 states and 159320 transitions. Word has length 297 [2018-09-14 17:30:42,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:30:42,376 INFO L480 AbstractCegarLoop]: Abstraction has 121404 states and 159320 transitions. [2018-09-14 17:30:42,376 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:30:42,377 INFO L276 IsEmpty]: Start isEmpty. Operand 121404 states and 159320 transitions. [2018-09-14 17:30:42,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2018-09-14 17:30:42,409 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:30:42,409 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 17:30:42,410 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:30:42,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1520054443, now seen corresponding path program 1 times [2018-09-14 17:30:42,410 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:30:42,411 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:30:42,411 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:30:42,411 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:30:42,411 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:30:42,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:30:42,803 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 197 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:30:42,803 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:30:42,803 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:30:42,812 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:30:42,812 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:30:42,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:30:42,930 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:30:43,053 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 197 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:30:43,053 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:30:43,262 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 197 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:30:43,283 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:30:43,283 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:30:43,299 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:30:43,299 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:30:43,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:30:43,553 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:30:43,876 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 197 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:30:43,876 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:30:44,030 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-09-14 17:30:44,587 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 197 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:30:44,589 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:30:44,589 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-09-14 17:30:44,589 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:30:44,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 17:30:44,591 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 17:30:44,591 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-14 17:30:44,591 INFO L87 Difference]: Start difference. First operand 121404 states and 159320 transitions. Second operand 9 states. [2018-09-14 17:31:06,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:31:06,550 INFO L93 Difference]: Finished difference Result 286071 states and 422281 transitions. [2018-09-14 17:31:06,550 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-14 17:31:06,550 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 371 [2018-09-14 17:31:06,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:31:08,533 INFO L225 Difference]: With dead ends: 286071 [2018-09-14 17:31:08,533 INFO L226 Difference]: Without dead ends: 159910 [2018-09-14 17:31:08,939 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1503 GetRequests, 1479 SyntacticMatches, 5 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=140, Invalid=280, Unknown=0, NotChecked=0, Total=420 [2018-09-14 17:31:09,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159910 states. [2018-09-14 17:31:12,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159910 to 159499. [2018-09-14 17:31:12,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159499 states. [2018-09-14 17:31:12,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159499 states to 159499 states and 223075 transitions. [2018-09-14 17:31:12,926 INFO L78 Accepts]: Start accepts. Automaton has 159499 states and 223075 transitions. Word has length 371 [2018-09-14 17:31:12,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:31:12,927 INFO L480 AbstractCegarLoop]: Abstraction has 159499 states and 223075 transitions. [2018-09-14 17:31:12,927 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 17:31:12,927 INFO L276 IsEmpty]: Start isEmpty. Operand 159499 states and 223075 transitions. [2018-09-14 17:31:12,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2018-09-14 17:31:12,947 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:31:12,947 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:31:12,948 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:31:12,948 INFO L82 PathProgramCache]: Analyzing trace with hash -1627796735, now seen corresponding path program 1 times [2018-09-14 17:31:12,948 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:31:12,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:31:12,949 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:31:12,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:31:12,949 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:31:13,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:31:13,708 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 14 proven. 139 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2018-09-14 17:31:13,708 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:31:13,708 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:31:13,718 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:31:13,718 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:31:13,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:31:13,837 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:31:19,618 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 10 [2018-09-14 17:31:19,792 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 384 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-09-14 17:31:19,792 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:31:20,431 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:31:21,444 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 153 proven. 278 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:31:21,466 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:31:21,466 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:31:21,482 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:31:21,483 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:31:21,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:31:21,765 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:31:24,505 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 18 proven. 135 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2018-09-14 17:31:24,505 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:31:24,754 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 153 proven. 0 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2018-09-14 17:31:24,757 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2018-09-14 17:31:24,758 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 8, 8, 7] total 21 [2018-09-14 17:31:24,758 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:31:24,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 17:31:24,760 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 17:31:24,760 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2018-09-14 17:31:24,760 INFO L87 Difference]: Start difference. First operand 159499 states and 223075 transitions. Second operand 3 states. Received shutdown request... [2018-09-14 17:31:31,158 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 17:31:31,159 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-14 17:31:31,165 WARN L206 ceAbstractionStarter]: Timeout [2018-09-14 17:31:31,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 05:31:31 BoogieIcfgContainer [2018-09-14 17:31:31,166 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-14 17:31:31,167 INFO L168 Benchmark]: Toolchain (without parser) took 225394.99 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.7 GB in the end (delta: -1.3 GB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-09-14 17:31:31,168 INFO L168 Benchmark]: CDTParser took 0.21 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 17:31:31,169 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2682.57 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 339.3 MB). Peak memory consumption was 339.3 MB. Max. memory is 7.1 GB. [2018-09-14 17:31:31,169 INFO L168 Benchmark]: Boogie Procedure Inliner took 313.01 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 42.8 MB). Peak memory consumption was 42.8 MB. Max. memory is 7.1 GB. [2018-09-14 17:31:31,170 INFO L168 Benchmark]: Boogie Preprocessor took 1222.85 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 1.0 GB). Free memory was 1.0 GB in the beginning and 2.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. [2018-09-14 17:31:31,171 INFO L168 Benchmark]: RCFGBuilder took 10584.84 ms. Allocated memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: 161.5 MB). Free memory was 2.4 GB in the beginning and 2.3 GB in the end (delta: 12.6 MB). Peak memory consumption was 747.6 MB. Max. memory is 7.1 GB. [2018-09-14 17:31:31,172 INFO L168 Benchmark]: TraceAbstraction took 210579.69 ms. Allocated memory was 2.7 GB in the beginning and 4.2 GB in the end (delta: 1.5 GB). Free memory was 2.3 GB in the beginning and 2.7 GB in the end (delta: -336.2 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-09-14 17:31:31,178 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 2682.57 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 339.3 MB). Peak memory consumption was 339.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 313.01 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 42.8 MB). Peak memory consumption was 42.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1222.85 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 1.0 GB). Free memory was 1.0 GB in the beginning and 2.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10584.84 ms. Allocated memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: 161.5 MB). Free memory was 2.4 GB in the beginning and 2.3 GB in the end (delta: 12.6 MB). Peak memory consumption was 747.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 210579.69 ms. Allocated memory was 2.7 GB in the beginning and 4.2 GB in the end (delta: 1.5 GB). Free memory was 2.3 GB in the beginning and 2.7 GB in the end (delta: -336.2 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 159]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 159). Cancelled while BasicCegarLoop was constructing difference of abstraction (159499states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement), while ReachableStatesComputation was computing reachable states (122768 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 210.4s OverallTime, 11 OverallIterations, 4 TraceHistogramMax, 175.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 7264 SDtfs, 37901 SDslu, 5237 SDs, 0 SdLazy, 62729 SolverSat, 14584 SolverUnsat, 6 SolverUnknown, 0 SolverNotchecked, 142.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4281 GetRequests, 4171 SyntacticMatches, 18 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 13.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=159499occurred in iteration=10, 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: 14.6s AutomataMinimizationTime, 10 MinimizatonAttempts, 5671 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 17.5s InterpolantComputationTime, 4541 NumberOfCodeBlocks, 4541 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 6606 ConstructedInterpolants, 118 QuantifiedInterpolants, 8698839 SizeOfPredicates, 15 NumberOfNonLiveVariables, 3489 ConjunctsInSsa, 58 ConjunctsInUnsatCore, 23 InterpolantComputations, 10 PerfectInterpolantSequences, 3961/4710 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/Problem13_label01_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-14_17-31-31-193.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem13_label01_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-14_17-31-31-193.csv Completed graceful shutdown