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/Problem17_label05_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-14 17:59:46,691 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-14 17:59:46,696 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-14 17:59:46,709 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-14 17:59:46,709 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-14 17:59:46,713 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-14 17:59:46,714 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-14 17:59:46,716 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-14 17:59:46,718 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-14 17:59:46,719 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-14 17:59:46,722 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-14 17:59:46,722 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-14 17:59:46,723 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-14 17:59:46,724 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-14 17:59:46,727 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-14 17:59:46,728 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-14 17:59:46,729 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-14 17:59:46,740 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-14 17:59:46,743 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-14 17:59:46,746 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-14 17:59:46,747 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-14 17:59:46,748 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-14 17:59:46,752 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-14 17:59:46,752 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-14 17:59:46,753 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-14 17:59:46,754 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-14 17:59:46,755 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-14 17:59:46,756 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-14 17:59:46,756 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-14 17:59:46,757 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-14 17:59:46,758 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-14 17:59:46,758 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-14 17:59:46,758 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-14 17:59:46,759 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-14 17:59:46,760 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-14 17:59:46,760 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-14 17:59:46,761 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 17:59:46,790 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-14 17:59:46,790 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-14 17:59:46,791 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-14 17:59:46,791 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-14 17:59:46,791 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-14 17:59:46,791 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-14 17:59:46,792 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-14 17:59:46,792 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-14 17:59:46,792 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-14 17:59:46,792 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-14 17:59:46,795 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-14 17:59:46,795 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-14 17:59:46,796 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-14 17:59:46,796 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-14 17:59:46,796 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-14 17:59:46,796 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-14 17:59:46,798 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-14 17:59:46,798 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-14 17:59:46,798 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-14 17:59:46,799 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-14 17:59:46,799 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-14 17:59:46,799 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-14 17:59:46,799 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-14 17:59:46,799 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 17:59:46,800 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-14 17:59:46,800 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-14 17:59:46,800 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-14 17:59:46,800 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-14 17:59:46,800 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-14 17:59:46,801 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-14 17:59:46,801 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-14 17:59:46,801 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-14 17:59:46,801 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-14 17:59:46,854 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-14 17:59:46,868 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-14 17:59:46,873 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-14 17:59:46,877 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-14 17:59:46,877 INFO L276 PluginConnector]: CDTParser initialized [2018-09-14 17:59:46,878 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label05_true-unreach-call.c [2018-09-14 17:59:47,209 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7195140c9/551a82b4717147a293c879bf3fba2765/FLAG388771e59 [2018-09-14 17:59:47,607 INFO L277 CDTParser]: Found 1 translation units. [2018-09-14 17:59:47,608 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label05_true-unreach-call.c [2018-09-14 17:59:47,635 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7195140c9/551a82b4717147a293c879bf3fba2765/FLAG388771e59 [2018-09-14 17:59:47,658 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7195140c9/551a82b4717147a293c879bf3fba2765 [2018-09-14 17:59:47,671 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-14 17:59:47,674 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-14 17:59:47,675 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-14 17:59:47,675 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-14 17:59:47,682 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-14 17:59:47,683 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 05:59:47" (1/1) ... [2018-09-14 17:59:47,686 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43a96985 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:59:47, skipping insertion in model container [2018-09-14 17:59:47,687 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 05:59:47" (1/1) ... [2018-09-14 17:59:47,699 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-14 17:59:48,748 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 17:59:48,771 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-14 17:59:49,574 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 17:59:49,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:59:49 WrapperNode [2018-09-14 17:59:49,782 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-14 17:59:49,783 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-14 17:59:49,783 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-14 17:59:49,783 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-14 17:59:49,793 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:59:49" (1/1) ... [2018-09-14 17:59:49,853 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:59:49" (1/1) ... [2018-09-14 17:59:50,049 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-14 17:59:50,049 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-14 17:59:50,049 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-14 17:59:50,050 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-14 17:59:50,618 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:59:49" (1/1) ... [2018-09-14 17:59:50,618 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:59:49" (1/1) ... [2018-09-14 17:59:50,638 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:59:49" (1/1) ... [2018-09-14 17:59:50,638 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:59:49" (1/1) ... [2018-09-14 17:59:50,743 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:59:49" (1/1) ... [2018-09-14 17:59:50,781 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:59:49" (1/1) ... [2018-09-14 17:59:50,829 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:59:49" (1/1) ... [2018-09-14 17:59:50,889 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-14 17:59:50,890 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-14 17:59:50,890 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-14 17:59:50,890 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-14 17:59:50,891 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:59:49" (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 17:59:50,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-14 17:59:50,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-14 17:59:50,962 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-14 17:59:50,962 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-14 17:59:50,962 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-14 17:59:50,962 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-14 17:59:50,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-14 17:59:50,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-14 17:59:50,963 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-14 17:59:50,963 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-14 18:00:04,222 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-14 18:00:04,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 06:00:04 BoogieIcfgContainer [2018-09-14 18:00:04,224 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-14 18:00:04,225 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-14 18:00:04,228 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-14 18:00:04,231 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-14 18:00:04,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 05:59:47" (1/3) ... [2018-09-14 18:00:04,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bbe4205 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 06:00:04, skipping insertion in model container [2018-09-14 18:00:04,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:59:49" (2/3) ... [2018-09-14 18:00:04,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bbe4205 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 06:00:04, skipping insertion in model container [2018-09-14 18:00:04,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 06:00:04" (3/3) ... [2018-09-14 18:00:04,235 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label05_true-unreach-call.c [2018-09-14 18:00:04,244 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-14 18:00:04,252 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-14 18:00:04,311 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-14 18:00:04,312 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-14 18:00:04,312 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-14 18:00:04,312 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-14 18:00:04,312 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-14 18:00:04,312 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-14 18:00:04,313 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-14 18:00:04,313 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-14 18:00:04,313 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-14 18:00:04,358 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-09-14 18:00:04,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-09-14 18:00:04,371 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:00:04,372 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] [2018-09-14 18:00:04,376 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:00:04,381 INFO L82 PathProgramCache]: Analyzing trace with hash -2043862628, now seen corresponding path program 1 times [2018-09-14 18:00:04,384 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:00:04,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:00:04,436 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:00:04,436 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:00:04,436 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:00:04,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:00:04,963 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 18:00:04,966 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:00:04,966 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 18:00:04,966 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:00:04,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 18:00:04,990 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 18:00:04,990 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 18:00:04,993 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-09-14 18:00:14,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:00:14,685 INFO L93 Difference]: Finished difference Result 2166 states and 4013 transitions. [2018-09-14 18:00:14,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 18:00:14,686 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 68 [2018-09-14 18:00:14,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:00:14,719 INFO L225 Difference]: With dead ends: 2166 [2018-09-14 18:00:14,719 INFO L226 Difference]: Without dead ends: 1556 [2018-09-14 18:00:14,729 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 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 18:00:14,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1556 states. [2018-09-14 18:00:14,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1556 to 1068. [2018-09-14 18:00:14,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2018-09-14 18:00:14,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1850 transitions. [2018-09-14 18:00:14,896 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1850 transitions. Word has length 68 [2018-09-14 18:00:14,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:00:14,897 INFO L480 AbstractCegarLoop]: Abstraction has 1068 states and 1850 transitions. [2018-09-14 18:00:14,897 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 18:00:14,897 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1850 transitions. [2018-09-14 18:00:14,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-09-14 18:00:14,910 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:00:14,911 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, 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 18:00:14,912 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:00:14,912 INFO L82 PathProgramCache]: Analyzing trace with hash -2068589566, now seen corresponding path program 1 times [2018-09-14 18:00:14,912 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:00:14,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:00:14,914 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:00:14,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:00:14,914 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:00:14,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:00:15,224 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:00:15,224 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:00:15,225 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 18:00:15,225 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:00:15,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 18:00:15,227 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 18:00:15,227 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 18:00:15,228 INFO L87 Difference]: Start difference. First operand 1068 states and 1850 transitions. Second operand 6 states. [2018-09-14 18:00:24,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:00:24,280 INFO L93 Difference]: Finished difference Result 3059 states and 5419 transitions. [2018-09-14 18:00:24,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 18:00:24,281 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 144 [2018-09-14 18:00:24,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:00:24,295 INFO L225 Difference]: With dead ends: 3059 [2018-09-14 18:00:24,296 INFO L226 Difference]: Without dead ends: 1997 [2018-09-14 18:00:24,300 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 18:00:24,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1997 states. [2018-09-14 18:00:24,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1997 to 1975. [2018-09-14 18:00:24,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1975 states. [2018-09-14 18:00:24,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1975 states to 1975 states and 3181 transitions. [2018-09-14 18:00:24,373 INFO L78 Accepts]: Start accepts. Automaton has 1975 states and 3181 transitions. Word has length 144 [2018-09-14 18:00:24,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:00:24,373 INFO L480 AbstractCegarLoop]: Abstraction has 1975 states and 3181 transitions. [2018-09-14 18:00:24,373 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 18:00:24,374 INFO L276 IsEmpty]: Start isEmpty. Operand 1975 states and 3181 transitions. [2018-09-14 18:00:24,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-09-14 18:00:24,385 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:00:24,385 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, 1, 1, 1, 1, 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 18:00:24,389 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:00:24,390 INFO L82 PathProgramCache]: Analyzing trace with hash -1218422790, now seen corresponding path program 1 times [2018-09-14 18:00:24,390 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:00:24,391 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:00:24,391 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:00:24,391 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:00:24,391 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:00:24,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:00:24,923 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:00:24,923 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:00:24,923 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 18:00:24,924 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:00:24,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 18:00:24,925 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 18:00:24,925 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 18:00:24,925 INFO L87 Difference]: Start difference. First operand 1975 states and 3181 transitions. Second operand 6 states. [2018-09-14 18:00:31,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:00:31,945 INFO L93 Difference]: Finished difference Result 4880 states and 7834 transitions. [2018-09-14 18:00:31,946 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 18:00:31,947 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 148 [2018-09-14 18:00:31,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:00:31,971 INFO L225 Difference]: With dead ends: 4880 [2018-09-14 18:00:31,972 INFO L226 Difference]: Without dead ends: 2911 [2018-09-14 18:00:31,981 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 18:00:31,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2911 states. [2018-09-14 18:00:32,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2911 to 2880. [2018-09-14 18:00:32,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2880 states. [2018-09-14 18:00:32,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2880 states to 2880 states and 3936 transitions. [2018-09-14 18:00:32,074 INFO L78 Accepts]: Start accepts. Automaton has 2880 states and 3936 transitions. Word has length 148 [2018-09-14 18:00:32,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:00:32,075 INFO L480 AbstractCegarLoop]: Abstraction has 2880 states and 3936 transitions. [2018-09-14 18:00:32,075 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 18:00:32,075 INFO L276 IsEmpty]: Start isEmpty. Operand 2880 states and 3936 transitions. [2018-09-14 18:00:32,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-09-14 18:00:32,078 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:00:32,078 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:00:32,078 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:00:32,078 INFO L82 PathProgramCache]: Analyzing trace with hash -28677417, now seen corresponding path program 1 times [2018-09-14 18:00:32,079 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:00:32,080 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:00:32,080 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:00:32,080 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:00:32,080 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:00:32,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:00:32,323 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:00:32,324 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:00:32,324 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 18:00:32,324 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:00:32,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 18:00:32,325 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 18:00:32,325 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 18:00:32,325 INFO L87 Difference]: Start difference. First operand 2880 states and 3936 transitions. Second operand 4 states. [2018-09-14 18:00:42,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:00:42,229 INFO L93 Difference]: Finished difference Result 6190 states and 8573 transitions. [2018-09-14 18:00:42,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 18:00:42,230 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 178 [2018-09-14 18:00:42,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:00:42,246 INFO L225 Difference]: With dead ends: 6190 [2018-09-14 18:00:42,246 INFO L226 Difference]: Without dead ends: 3316 [2018-09-14 18:00:42,258 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 18:00:42,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3316 states. [2018-09-14 18:00:42,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3316 to 3316. [2018-09-14 18:00:42,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3316 states. [2018-09-14 18:00:42,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3316 states to 3316 states and 4411 transitions. [2018-09-14 18:00:42,332 INFO L78 Accepts]: Start accepts. Automaton has 3316 states and 4411 transitions. Word has length 178 [2018-09-14 18:00:42,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:00:42,333 INFO L480 AbstractCegarLoop]: Abstraction has 3316 states and 4411 transitions. [2018-09-14 18:00:42,333 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 18:00:42,333 INFO L276 IsEmpty]: Start isEmpty. Operand 3316 states and 4411 transitions. [2018-09-14 18:00:42,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-09-14 18:00:42,337 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:00:42,337 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, 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] [2018-09-14 18:00:42,338 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:00:42,338 INFO L82 PathProgramCache]: Analyzing trace with hash 1314675152, now seen corresponding path program 1 times [2018-09-14 18:00:42,338 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:00:42,339 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:00:42,339 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:00:42,339 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:00:42,339 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:00:42,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:00:42,597 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-09-14 18:00:42,597 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:00:42,597 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 18:00:42,597 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:00:42,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 18:00:42,598 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 18:00:42,599 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 18:00:42,599 INFO L87 Difference]: Start difference. First operand 3316 states and 4411 transitions. Second operand 4 states. [2018-09-14 18:00:51,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:00:51,799 INFO L93 Difference]: Finished difference Result 11934 states and 16156 transitions. [2018-09-14 18:00:51,800 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 18:00:51,800 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 232 [2018-09-14 18:00:51,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:00:51,832 INFO L225 Difference]: With dead ends: 11934 [2018-09-14 18:00:51,832 INFO L226 Difference]: Without dead ends: 8624 [2018-09-14 18:00:51,847 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 18:00:51,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8624 states. [2018-09-14 18:00:52,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8624 to 8624. [2018-09-14 18:00:52,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8624 states. [2018-09-14 18:00:52,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8624 states to 8624 states and 10834 transitions. [2018-09-14 18:00:52,152 INFO L78 Accepts]: Start accepts. Automaton has 8624 states and 10834 transitions. Word has length 232 [2018-09-14 18:00:52,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:00:52,153 INFO L480 AbstractCegarLoop]: Abstraction has 8624 states and 10834 transitions. [2018-09-14 18:00:52,153 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 18:00:52,153 INFO L276 IsEmpty]: Start isEmpty. Operand 8624 states and 10834 transitions. [2018-09-14 18:00:52,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2018-09-14 18:00:52,161 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:00:52,161 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, 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] [2018-09-14 18:00:52,161 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:00:52,161 INFO L82 PathProgramCache]: Analyzing trace with hash 495416691, now seen corresponding path program 1 times [2018-09-14 18:00:52,162 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:00:52,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:00:52,163 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:00:52,163 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:00:52,163 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:00:52,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:00:52,758 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 122 proven. 72 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 18:00:52,759 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:00:52,759 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 18:00:52,768 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:00:52,768 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:00:52,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:00:52,889 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:00:53,531 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 9 [2018-09-14 18:00:53,659 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2018-09-14 18:00:53,660 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:00:54,101 WARN L178 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 27 [2018-09-14 18:00:54,228 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 37 [2018-09-14 18:00:55,188 WARN L178 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 22 [2018-09-14 18:00:55,508 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 122 proven. 72 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 18:00:55,529 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 18:00:55,530 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-09-14 18:00:55,530 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:00:55,531 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 18:00:55,531 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 18:00:55,531 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2018-09-14 18:00:55,531 INFO L87 Difference]: Start difference. First operand 8624 states and 10834 transitions. Second operand 5 states. [2018-09-14 18:01:04,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:01:04,632 INFO L93 Difference]: Finished difference Result 20071 states and 25056 transitions. [2018-09-14 18:01:04,634 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 18:01:04,635 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 255 [2018-09-14 18:01:04,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:01:04,708 INFO L225 Difference]: With dead ends: 20071 [2018-09-14 18:01:04,709 INFO L226 Difference]: Without dead ends: 11453 [2018-09-14 18:01:04,743 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 519 GetRequests, 506 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2018-09-14 18:01:04,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11453 states. [2018-09-14 18:01:05,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11453 to 11406. [2018-09-14 18:01:05,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11406 states. [2018-09-14 18:01:05,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11406 states to 11406 states and 14114 transitions. [2018-09-14 18:01:05,037 INFO L78 Accepts]: Start accepts. Automaton has 11406 states and 14114 transitions. Word has length 255 [2018-09-14 18:01:05,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:01:05,038 INFO L480 AbstractCegarLoop]: Abstraction has 11406 states and 14114 transitions. [2018-09-14 18:01:05,038 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 18:01:05,038 INFO L276 IsEmpty]: Start isEmpty. Operand 11406 states and 14114 transitions. [2018-09-14 18:01:05,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2018-09-14 18:01:05,057 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:01:05,058 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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 18:01:05,058 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:01:05,058 INFO L82 PathProgramCache]: Analyzing trace with hash -1331578978, now seen corresponding path program 1 times [2018-09-14 18:01:05,058 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:01:05,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:01:05,061 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:01:05,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:01:05,061 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:01:05,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:01:05,773 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 193 proven. 142 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-09-14 18:01:05,774 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:01:05,774 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 18:01:05,789 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:01:05,789 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:01:05,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:01:05,899 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:01:06,334 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 17 [2018-09-14 18:01:06,610 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 276 proven. 2 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2018-09-14 18:01:06,611 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:01:07,260 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 24 [2018-09-14 18:01:07,917 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 193 proven. 211 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 18:01:07,944 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:01:07,944 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 18:01:07,960 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:01:07,961 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:01:08,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:01:08,167 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:01:08,443 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 276 proven. 2 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2018-09-14 18:01:08,444 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:01:09,387 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 193 proven. 211 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 18:01:09,389 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 18:01:09,390 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8, 7, 8] total 16 [2018-09-14 18:01:09,390 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 18:01:09,391 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-14 18:01:09,391 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-14 18:01:09,392 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2018-09-14 18:01:09,392 INFO L87 Difference]: Start difference. First operand 11406 states and 14114 transitions. Second operand 10 states. [2018-09-14 18:01:31,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:01:31,670 INFO L93 Difference]: Finished difference Result 37332 states and 48024 transitions. [2018-09-14 18:01:31,671 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-14 18:01:31,671 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 307 [2018-09-14 18:01:31,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:01:31,757 INFO L225 Difference]: With dead ends: 37332 [2018-09-14 18:01:31,757 INFO L226 Difference]: Without dead ends: 25932 [2018-09-14 18:01:31,800 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1248 GetRequests, 1222 SyntacticMatches, 5 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=150, Invalid=356, Unknown=0, NotChecked=0, Total=506 [2018-09-14 18:01:31,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25932 states. [2018-09-14 18:01:32,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25932 to 24934. [2018-09-14 18:01:32,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24934 states. [2018-09-14 18:01:32,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24934 states to 24934 states and 31126 transitions. [2018-09-14 18:01:32,318 INFO L78 Accepts]: Start accepts. Automaton has 24934 states and 31126 transitions. Word has length 307 [2018-09-14 18:01:32,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:01:32,318 INFO L480 AbstractCegarLoop]: Abstraction has 24934 states and 31126 transitions. [2018-09-14 18:01:32,318 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-14 18:01:32,318 INFO L276 IsEmpty]: Start isEmpty. Operand 24934 states and 31126 transitions. [2018-09-14 18:01:32,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2018-09-14 18:01:32,335 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:01:32,335 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-09-14 18:01:32,336 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:01:32,336 INFO L82 PathProgramCache]: Analyzing trace with hash 1063261437, now seen corresponding path program 1 times [2018-09-14 18:01:32,336 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:01:32,337 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:01:32,337 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:01:32,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:01:32,338 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:01:32,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:01:32,801 WARN L178 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 9 [2018-09-14 18:01:33,277 WARN L178 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 16 [2018-09-14 18:01:33,819 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 189 proven. 214 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-09-14 18:01:33,819 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:01:33,819 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 18:01:33,828 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:01:33,828 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:01:33,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:01:33,932 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:01:34,207 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 346 proven. 2 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2018-09-14 18:01:34,207 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:01:34,611 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 261 proven. 76 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-09-14 18:01:34,633 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:01:34,633 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 18:01:34,649 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:01:34,649 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:01:34,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:01:34,888 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:01:36,083 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 274 proven. 2 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2018-09-14 18:01:36,084 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:01:36,426 WARN L178 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 27 [2018-09-14 18:01:36,569 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 35 [2018-09-14 18:01:36,905 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 191 proven. 142 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2018-09-14 18:01:36,908 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 18:01:36,908 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5, 5, 5] total 18 [2018-09-14 18:01:36,908 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 18:01:36,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-14 18:01:36,909 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-14 18:01:36,910 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2018-09-14 18:01:36,910 INFO L87 Difference]: Start difference. First operand 24934 states and 31126 transitions. Second operand 12 states. [2018-09-14 18:01:56,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:01:56,163 INFO L93 Difference]: Finished difference Result 60044 states and 76457 transitions. [2018-09-14 18:01:56,171 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-09-14 18:01:56,172 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 330 [2018-09-14 18:01:56,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:01:56,297 INFO L225 Difference]: With dead ends: 60044 [2018-09-14 18:01:56,297 INFO L226 Difference]: Without dead ends: 33166 [2018-09-14 18:01:56,425 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1440 GetRequests, 1366 SyntacticMatches, 2 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1622 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=921, Invalid=4481, Unknown=0, NotChecked=0, Total=5402 [2018-09-14 18:01:56,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33166 states. [2018-09-14 18:01:56,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33166 to 31453. [2018-09-14 18:01:56,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31453 states. [2018-09-14 18:01:57,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31453 states to 31453 states and 38156 transitions. [2018-09-14 18:01:57,442 INFO L78 Accepts]: Start accepts. Automaton has 31453 states and 38156 transitions. Word has length 330 [2018-09-14 18:01:57,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:01:57,444 INFO L480 AbstractCegarLoop]: Abstraction has 31453 states and 38156 transitions. [2018-09-14 18:01:57,444 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-09-14 18:01:57,444 INFO L276 IsEmpty]: Start isEmpty. Operand 31453 states and 38156 transitions. [2018-09-14 18:01:57,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2018-09-14 18:01:57,457 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:01:57,457 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, 3, 3, 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, 1, 1, 1, 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 18:01:57,458 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:01:57,460 INFO L82 PathProgramCache]: Analyzing trace with hash 1706258700, now seen corresponding path program 1 times [2018-09-14 18:01:57,460 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:01:57,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:01:57,461 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:01:57,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:01:57,461 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:01:57,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:01:58,115 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 185 proven. 124 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2018-09-14 18:01:58,115 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:01:58,115 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 18:01:58,123 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:01:58,123 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:01:58,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:01:58,229 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:01:59,129 WARN L178 SmtUtils]: Spent 458.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 21 [2018-09-14 18:02:03,594 WARN L178 SmtUtils]: Spent 2.86 s on a formula simplification. DAG size of input: 33 DAG size of output: 25 [2018-09-14 18:02:07,378 WARN L178 SmtUtils]: Spent 1.53 s on a formula simplification. DAG size of input: 85 DAG size of output: 38 [2018-09-14 18:02:07,816 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 4 proven. 413 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-09-14 18:02:07,816 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:02:08,288 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 34 [2018-09-14 18:02:08,439 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 297 proven. 64 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-09-14 18:02:08,459 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:02:08,459 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 18:02:08,476 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:02:08,476 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:02:08,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:02:08,718 INFO L273 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2018-09-14 18:04:00,494 WARN L186 SmtUtils]: Removed 42 from assertion stack [2018-09-14 18:04:00,494 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-09-14 18:04:00,695 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 18:04:00,696 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-14 18:04:00,701 WARN L206 ceAbstractionStarter]: Timeout [2018-09-14 18:04:00,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 06:04:00 BoogieIcfgContainer [2018-09-14 18:04:00,701 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-14 18:04:00,702 INFO L168 Benchmark]: Toolchain (without parser) took 253030.57 ms. Allocated memory was 1.5 GB in the beginning and 3.3 GB in the end (delta: 1.7 GB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -277.9 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-09-14 18:04:00,703 INFO L168 Benchmark]: CDTParser took 0.16 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 18:04:00,704 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2107.35 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 18:04:00,704 INFO L168 Benchmark]: Boogie Procedure Inliner took 266.17 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: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-09-14 18:04:00,705 INFO L168 Benchmark]: Boogie Preprocessor took 840.34 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 928.5 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 123.6 MB. Max. memory is 7.1 GB. [2018-09-14 18:04:00,706 INFO L168 Benchmark]: RCFGBuilder took 13334.05 ms. Allocated memory is still 2.5 GB. Free memory was 2.3 GB in the beginning and 1.9 GB in the end (delta: 452.7 MB). Peak memory consumption was 452.7 MB. Max. memory is 7.1 GB. [2018-09-14 18:04:00,707 INFO L168 Benchmark]: TraceAbstraction took 236476.44 ms. Allocated memory was 2.5 GB in the beginning and 3.3 GB in the end (delta: 814.2 MB). Free memory was 1.9 GB in the beginning and 1.7 GB in the end (delta: 189.4 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-09-14 18:04:00,711 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 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 2107.35 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 266.17 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: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 840.34 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 928.5 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 123.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 13334.05 ms. Allocated memory is still 2.5 GB. Free memory was 2.3 GB in the beginning and 1.9 GB in the end (delta: 452.7 MB). Peak memory consumption was 452.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 236476.44 ms. Allocated memory was 2.5 GB in the beginning and 3.3 GB in the end (delta: 814.2 MB). Free memory was 1.9 GB in the beginning and 1.7 GB in the end (delta: 189.4 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 191]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 191). Cancelled while BasicCegarLoop was analyzing trace of length 348 with TraceHistMax 4, while TraceCheckSpWp was constructing forward predicates, while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 527. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 236.4s OverallTime, 9 OverallIterations, 4 TraceHistogramMax, 96.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2663 SDtfs, 21188 SDslu, 3345 SDs, 0 SdLazy, 35542 SolverSat, 7879 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 82.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3243 GetRequests, 3108 SyntacticMatches, 10 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1788 ImplicationChecksByTransitivity, 9.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31453occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.5s AutomataMinimizationTime, 8 MinimizatonAttempts, 3299 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 12.3s InterpolantComputationTime, 3191 NumberOfCodeBlocks, 3191 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 4702 ConstructedInterpolants, 186 QuantifiedInterpolants, 7387797 SizeOfPredicates, 15 NumberOfNonLiveVariables, 2651 ConjunctsInSsa, 50 ConjunctsInUnsatCore, 18 InterpolantComputations, 6 PerfectInterpolantSequences, 3925/5073 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/Problem17_label05_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-14_18-04-00-730.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem17_label05_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-14_18-04-00-730.csv Completed graceful shutdown