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_label03_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-18 12:09:21,819 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-18 12:09:21,821 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-18 12:09:21,833 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-18 12:09:21,834 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-18 12:09:21,835 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-18 12:09:21,836 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-18 12:09:21,838 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-18 12:09:21,841 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-18 12:09:21,842 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-18 12:09:21,843 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-18 12:09:21,843 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-18 12:09:21,844 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-18 12:09:21,845 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-18 12:09:21,849 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-18 12:09:21,850 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-18 12:09:21,853 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-18 12:09:21,856 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-18 12:09:21,858 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-18 12:09:21,859 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-18 12:09:21,860 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-18 12:09:21,862 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-18 12:09:21,864 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-18 12:09:21,864 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-18 12:09:21,864 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-18 12:09:21,865 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-18 12:09:21,866 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-18 12:09:21,867 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-18 12:09:21,867 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-18 12:09:21,868 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-18 12:09:21,868 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-18 12:09:21,869 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-18 12:09:21,869 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-18 12:09:21,870 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-18 12:09:21,871 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-18 12:09:21,871 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-18 12:09:21,872 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-18 12:09:21,886 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-18 12:09:21,886 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-18 12:09:21,887 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-18 12:09:21,887 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-18 12:09:21,888 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-18 12:09:21,888 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-18 12:09:21,888 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-18 12:09:21,888 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-18 12:09:21,888 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-18 12:09:21,889 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-18 12:09:21,889 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-18 12:09:21,889 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-18 12:09:21,890 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-18 12:09:21,890 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-18 12:09:21,890 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-18 12:09:21,890 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-18 12:09:21,890 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-18 12:09:21,891 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-18 12:09:21,891 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-18 12:09:21,891 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-18 12:09:21,891 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-18 12:09:21,891 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-18 12:09:21,891 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-18 12:09:21,892 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-18 12:09:21,892 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 12:09:21,892 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-18 12:09:21,892 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-18 12:09:21,892 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-18 12:09:21,893 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-18 12:09:21,893 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-18 12:09:21,893 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-18 12:09:21,893 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-18 12:09:21,893 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-18 12:09:21,893 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-18 12:09:21,939 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-18 12:09:21,953 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-18 12:09:21,958 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-18 12:09:21,961 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-18 12:09:21,962 INFO L276 PluginConnector]: CDTParser initialized [2018-09-18 12:09:21,962 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label03_true-unreach-call.c [2018-09-18 12:09:22,313 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc91999ca/e6aa010bf44b47d2ad3fb286ac198972/FLAG62d2a456a [2018-09-18 12:09:22,721 INFO L277 CDTParser]: Found 1 translation units. [2018-09-18 12:09:22,722 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label03_true-unreach-call.c [2018-09-18 12:09:22,751 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc91999ca/e6aa010bf44b47d2ad3fb286ac198972/FLAG62d2a456a [2018-09-18 12:09:22,771 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc91999ca/e6aa010bf44b47d2ad3fb286ac198972 [2018-09-18 12:09:22,784 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-18 12:09:22,787 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-18 12:09:22,788 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-18 12:09:22,789 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-18 12:09:22,798 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-18 12:09:22,799 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 12:09:22" (1/1) ... [2018-09-18 12:09:22,802 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68a2763a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:09:22, skipping insertion in model container [2018-09-18 12:09:22,803 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 12:09:22" (1/1) ... [2018-09-18 12:09:22,815 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-18 12:09:23,822 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 12:09:23,844 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-18 12:09:24,370 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 12:09:24,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:09:24 WrapperNode [2018-09-18 12:09:24,619 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-18 12:09:24,620 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-18 12:09:24,620 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-18 12:09:24,621 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-18 12:09:24,631 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:09:24" (1/1) ... [2018-09-18 12:09:24,715 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:09:24" (1/1) ... [2018-09-18 12:09:24,919 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-18 12:09:24,920 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-18 12:09:24,920 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-18 12:09:24,920 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-18 12:09:25,518 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:09:24" (1/1) ... [2018-09-18 12:09:25,519 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:09:24" (1/1) ... [2018-09-18 12:09:25,546 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:09:24" (1/1) ... [2018-09-18 12:09:25,546 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:09:24" (1/1) ... [2018-09-18 12:09:25,679 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:09:24" (1/1) ... [2018-09-18 12:09:25,700 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:09:24" (1/1) ... [2018-09-18 12:09:25,739 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:09:24" (1/1) ... [2018-09-18 12:09:25,774 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-18 12:09:25,775 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-18 12:09:25,775 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-18 12:09:25,775 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-18 12:09:25,778 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:09:24" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 12:09:25,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-18 12:09:25,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-18 12:09:25,851 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-18 12:09:25,852 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-18 12:09:25,852 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-18 12:09:25,852 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-18 12:09:25,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-18 12:09:25,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-18 12:09:25,853 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-18 12:09:25,853 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-18 12:09:37,629 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-18 12:09:37,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 12:09:37 BoogieIcfgContainer [2018-09-18 12:09:37,630 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-18 12:09:37,631 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-18 12:09:37,632 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-18 12:09:37,635 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-18 12:09:37,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 12:09:22" (1/3) ... [2018-09-18 12:09:37,636 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e46287c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 12:09:37, skipping insertion in model container [2018-09-18 12:09:37,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:09:24" (2/3) ... [2018-09-18 12:09:37,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e46287c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 12:09:37, skipping insertion in model container [2018-09-18 12:09:37,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 12:09:37" (3/3) ... [2018-09-18 12:09:37,639 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label03_true-unreach-call.c [2018-09-18 12:09:37,649 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-18 12:09:37,658 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-18 12:09:37,714 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-18 12:09:37,715 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-18 12:09:37,715 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-18 12:09:37,716 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-18 12:09:37,716 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-18 12:09:37,716 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-18 12:09:37,716 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-18 12:09:37,716 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-18 12:09:37,716 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-18 12:09:37,754 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-09-18 12:09:37,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-09-18 12:09:37,764 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:09:37,765 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] [2018-09-18 12:09:37,766 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:09:37,772 INFO L82 PathProgramCache]: Analyzing trace with hash 1535738860, now seen corresponding path program 1 times [2018-09-18 12:09:37,774 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:09:37,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:09:37,822 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:09:37,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:09:37,823 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:09:37,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:09:38,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:09:38,288 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 12:09:38,289 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-18 12:09:38,289 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:09:38,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-18 12:09:38,314 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-18 12:09:38,315 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 12:09:38,317 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-09-18 12:09:50,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:09:50,588 INFO L93 Difference]: Finished difference Result 2164 states and 4009 transitions. [2018-09-18 12:09:50,589 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-18 12:09:50,590 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2018-09-18 12:09:50,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:09:50,626 INFO L225 Difference]: With dead ends: 2164 [2018-09-18 12:09:50,626 INFO L226 Difference]: Without dead ends: 1554 [2018-09-18 12:09:50,636 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 [2018-09-18 12:09:50,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2018-09-18 12:09:50,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1052. [2018-09-18 12:09:50,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1052 states. [2018-09-18 12:09:50,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1882 transitions. [2018-09-18 12:09:50,809 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1882 transitions. Word has length 56 [2018-09-18 12:09:50,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:09:50,810 INFO L480 AbstractCegarLoop]: Abstraction has 1052 states and 1882 transitions. [2018-09-18 12:09:50,810 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-18 12:09:50,810 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1882 transitions. [2018-09-18 12:09:50,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-09-18 12:09:50,818 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:09:50,818 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] [2018-09-18 12:09:50,819 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:09:50,819 INFO L82 PathProgramCache]: Analyzing trace with hash -1304567782, now seen corresponding path program 1 times [2018-09-18 12:09:50,819 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:09:50,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:09:50,821 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:09:50,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:09:50,821 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:09:50,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:09:51,156 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:09:51,157 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 12:09:51,157 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-18 12:09:51,157 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:09:51,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 12:09:51,160 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 12:09:51,160 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-18 12:09:51,161 INFO L87 Difference]: Start difference. First operand 1052 states and 1882 transitions. Second operand 5 states. [2018-09-18 12:09:59,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:09:59,823 INFO L93 Difference]: Finished difference Result 3031 states and 5537 transitions. [2018-09-18 12:09:59,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 12:09:59,825 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2018-09-18 12:09:59,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:09:59,841 INFO L225 Difference]: With dead ends: 3031 [2018-09-18 12:09:59,842 INFO L226 Difference]: Without dead ends: 1985 [2018-09-18 12:09:59,846 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-18 12:09:59,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1985 states. [2018-09-18 12:09:59,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1985 to 1959. [2018-09-18 12:09:59,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1959 states. [2018-09-18 12:09:59,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1959 states to 1959 states and 3239 transitions. [2018-09-18 12:09:59,926 INFO L78 Accepts]: Start accepts. Automaton has 1959 states and 3239 transitions. Word has length 128 [2018-09-18 12:09:59,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:09:59,927 INFO L480 AbstractCegarLoop]: Abstraction has 1959 states and 3239 transitions. [2018-09-18 12:09:59,927 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 12:09:59,927 INFO L276 IsEmpty]: Start isEmpty. Operand 1959 states and 3239 transitions. [2018-09-18 12:09:59,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-09-18 12:09:59,934 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:09:59,935 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] [2018-09-18 12:09:59,935 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:09:59,935 INFO L82 PathProgramCache]: Analyzing trace with hash -1286141214, now seen corresponding path program 1 times [2018-09-18 12:09:59,936 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:09:59,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:09:59,939 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:09:59,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:09:59,939 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:09:59,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:10:00,247 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:10:00,248 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:10:00,248 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:10:00,261 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:10:00,262 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:10:00,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:10:00,338 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:10:04,230 WARN L178 SmtUtils]: Spent 1.37 s on a formula simplification that was a NOOP. DAG size: 32 [2018-09-18 12:10:04,479 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 4 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:10:04,479 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:10:05,043 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:10:05,078 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 12:10:05,079 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 6] total 11 [2018-09-18 12:10:05,079 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:10:05,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 12:10:05,082 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 12:10:05,083 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=78, Unknown=1, NotChecked=0, Total=110 [2018-09-18 12:10:05,083 INFO L87 Difference]: Start difference. First operand 1959 states and 3239 transitions. Second operand 3 states. [2018-09-18 12:10:09,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:10:09,947 INFO L93 Difference]: Finished difference Result 5689 states and 9646 transitions. [2018-09-18 12:10:09,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 12:10:09,952 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 131 [2018-09-18 12:10:09,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:10:09,983 INFO L225 Difference]: With dead ends: 5689 [2018-09-18 12:10:09,983 INFO L226 Difference]: Without dead ends: 3736 [2018-09-18 12:10:09,996 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 258 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=31, Invalid=78, Unknown=1, NotChecked=0, Total=110 [2018-09-18 12:10:10,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3736 states. [2018-09-18 12:10:10,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3736 to 3733. [2018-09-18 12:10:10,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3733 states. [2018-09-18 12:10:10,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3733 states to 3733 states and 5526 transitions. [2018-09-18 12:10:10,124 INFO L78 Accepts]: Start accepts. Automaton has 3733 states and 5526 transitions. Word has length 131 [2018-09-18 12:10:10,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:10:10,125 INFO L480 AbstractCegarLoop]: Abstraction has 3733 states and 5526 transitions. [2018-09-18 12:10:10,125 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 12:10:10,125 INFO L276 IsEmpty]: Start isEmpty. Operand 3733 states and 5526 transitions. [2018-09-18 12:10:10,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-09-18 12:10:10,130 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:10:10,130 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] [2018-09-18 12:10:10,131 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:10:10,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1968123582, now seen corresponding path program 1 times [2018-09-18 12:10:10,131 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:10:10,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:10:10,132 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:10:10,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:10:10,132 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:10:10,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:10:10,411 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:10:10,412 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 12:10:10,412 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-09-18 12:10:10,412 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:10:10,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-18 12:10:10,413 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-18 12:10:10,413 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-09-18 12:10:10,414 INFO L87 Difference]: Start difference. First operand 3733 states and 5526 transitions. Second operand 7 states. [2018-09-18 12:10:27,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:10:27,095 INFO L93 Difference]: Finished difference Result 12809 states and 21216 transitions. [2018-09-18 12:10:27,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-18 12:10:27,096 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 158 [2018-09-18 12:10:27,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:10:27,171 INFO L225 Difference]: With dead ends: 12809 [2018-09-18 12:10:27,171 INFO L226 Difference]: Without dead ends: 9082 [2018-09-18 12:10:27,223 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-09-18 12:10:27,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9082 states. [2018-09-18 12:10:27,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9082 to 8957. [2018-09-18 12:10:27,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8957 states. [2018-09-18 12:10:27,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8957 states to 8957 states and 13358 transitions. [2018-09-18 12:10:27,549 INFO L78 Accepts]: Start accepts. Automaton has 8957 states and 13358 transitions. Word has length 158 [2018-09-18 12:10:27,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:10:27,549 INFO L480 AbstractCegarLoop]: Abstraction has 8957 states and 13358 transitions. [2018-09-18 12:10:27,550 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-18 12:10:27,551 INFO L276 IsEmpty]: Start isEmpty. Operand 8957 states and 13358 transitions. [2018-09-18 12:10:27,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-09-18 12:10:27,560 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:10:27,564 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] [2018-09-18 12:10:27,564 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:10:27,565 INFO L82 PathProgramCache]: Analyzing trace with hash -1891195745, now seen corresponding path program 1 times [2018-09-18 12:10:27,565 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:10:27,566 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:10:27,566 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:10:27,566 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:10:27,566 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:10:27,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:10:27,941 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:10:27,941 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 12:10:27,942 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-18 12:10:27,942 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:10:27,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 12:10:27,943 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 12:10:27,943 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-18 12:10:27,944 INFO L87 Difference]: Start difference. First operand 8957 states and 13358 transitions. Second operand 5 states. [2018-09-18 12:10:40,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:10:40,495 INFO L93 Difference]: Finished difference Result 29419 states and 47567 transitions. [2018-09-18 12:10:40,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-18 12:10:40,497 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2018-09-18 12:10:40,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:10:40,642 INFO L225 Difference]: With dead ends: 29419 [2018-09-18 12:10:40,643 INFO L226 Difference]: Without dead ends: 20468 [2018-09-18 12:10:40,748 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-18 12:10:40,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20468 states. [2018-09-18 12:10:41,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20468 to 20171. [2018-09-18 12:10:41,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20171 states. [2018-09-18 12:10:41,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20171 states to 20171 states and 27861 transitions. [2018-09-18 12:10:41,390 INFO L78 Accepts]: Start accepts. Automaton has 20171 states and 27861 transitions. Word has length 170 [2018-09-18 12:10:41,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:10:41,391 INFO L480 AbstractCegarLoop]: Abstraction has 20171 states and 27861 transitions. [2018-09-18 12:10:41,391 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 12:10:41,391 INFO L276 IsEmpty]: Start isEmpty. Operand 20171 states and 27861 transitions. [2018-09-18 12:10:41,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-09-18 12:10:41,413 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:10:41,414 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:10:41,414 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:10:41,414 INFO L82 PathProgramCache]: Analyzing trace with hash -1388015723, now seen corresponding path program 1 times [2018-09-18 12:10:41,415 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:10:41,416 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:10:41,416 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:10:41,416 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:10:41,416 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:10:41,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:10:41,822 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 101 proven. 61 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-09-18 12:10:41,823 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:10:41,823 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 [2018-09-18 12:10:41,831 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:10:41,832 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:10:41,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:10:41,920 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:10:42,278 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-09-18 12:10:42,279 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:10:42,945 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 98 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 12:10:42,966 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 12:10:42,966 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 5] total 13 [2018-09-18 12:10:42,966 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:10:42,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 12:10:42,967 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 12:10:42,967 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2018-09-18 12:10:42,968 INFO L87 Difference]: Start difference. First operand 20171 states and 27861 transitions. Second operand 5 states. [2018-09-18 12:10:56,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:10:56,230 INFO L93 Difference]: Finished difference Result 48187 states and 66236 transitions. [2018-09-18 12:10:56,236 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-18 12:10:56,237 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 238 [2018-09-18 12:10:56,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:10:56,357 INFO L225 Difference]: With dead ends: 48187 [2018-09-18 12:10:56,358 INFO L226 Difference]: Without dead ends: 28022 [2018-09-18 12:10:56,419 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 473 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2018-09-18 12:10:56,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28022 states. [2018-09-18 12:10:57,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28022 to 26150. [2018-09-18 12:10:57,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26150 states. [2018-09-18 12:10:57,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26150 states to 26150 states and 35253 transitions. [2018-09-18 12:10:57,229 INFO L78 Accepts]: Start accepts. Automaton has 26150 states and 35253 transitions. Word has length 238 [2018-09-18 12:10:57,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:10:57,230 INFO L480 AbstractCegarLoop]: Abstraction has 26150 states and 35253 transitions. [2018-09-18 12:10:57,230 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 12:10:57,230 INFO L276 IsEmpty]: Start isEmpty. Operand 26150 states and 35253 transitions. [2018-09-18 12:10:57,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2018-09-18 12:10:57,254 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:10:57,254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:10:57,255 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:10:57,255 INFO L82 PathProgramCache]: Analyzing trace with hash -2047962603, now seen corresponding path program 1 times [2018-09-18 12:10:57,255 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:10:57,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:10:57,256 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:10:57,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:10:57,256 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:10:57,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:10:57,586 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 12:10:57,957 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 99 proven. 7 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-09-18 12:10:57,957 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:10:57,957 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:10:57,966 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:10:57,966 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:10:58,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:10:58,049 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:10:58,172 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 171 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:10:58,173 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:10:58,296 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 171 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:10:58,316 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:10:58,317 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 12:10:58,332 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:10:58,332 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:10:58,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:10:58,513 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:10:58,770 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 99 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-09-18 12:10:58,770 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:10:58,957 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-09-18 12:10:58,959 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2018-09-18 12:10:58,959 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5, 5, 5] total 12 [2018-09-18 12:10:58,959 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:10:58,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 12:10:58,960 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 12:10:58,960 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-18 12:10:58,960 INFO L87 Difference]: Start difference. First operand 26150 states and 35253 transitions. Second operand 5 states. [2018-09-18 12:11:04,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:11:04,408 INFO L93 Difference]: Finished difference Result 56065 states and 77380 transitions. [2018-09-18 12:11:04,409 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-18 12:11:04,409 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 245 [2018-09-18 12:11:04,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:11:04,488 INFO L225 Difference]: With dead ends: 56065 [2018-09-18 12:11:04,488 INFO L226 Difference]: Without dead ends: 29051 [2018-09-18 12:11:04,555 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 988 GetRequests, 970 SyntacticMatches, 7 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-09-18 12:11:04,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29051 states. [2018-09-18 12:11:04,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29051 to 28016. [2018-09-18 12:11:04,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28016 states. [2018-09-18 12:11:05,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28016 states to 28016 states and 34088 transitions. [2018-09-18 12:11:05,062 INFO L78 Accepts]: Start accepts. Automaton has 28016 states and 34088 transitions. Word has length 245 [2018-09-18 12:11:05,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:11:05,063 INFO L480 AbstractCegarLoop]: Abstraction has 28016 states and 34088 transitions. [2018-09-18 12:11:05,063 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 12:11:05,063 INFO L276 IsEmpty]: Start isEmpty. Operand 28016 states and 34088 transitions. [2018-09-18 12:11:05,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2018-09-18 12:11:05,085 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:11:05,085 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, 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] [2018-09-18 12:11:05,085 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:11:05,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1636144733, now seen corresponding path program 1 times [2018-09-18 12:11:05,086 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:11:05,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:11:05,087 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:11:05,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:11:05,087 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:11:05,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:11:05,382 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 247 proven. 47 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-09-18 12:11:05,383 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:11:05,383 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:11:05,391 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:11:05,391 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:11:05,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:11:05,489 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:11:34,127 WARN L178 SmtUtils]: Spent 28.28 s on a formula simplification. DAG size of input: 122 DAG size of output: 98 [2018-09-18 12:11:38,301 WARN L178 SmtUtils]: Spent 4.07 s on a formula simplification that was a NOOP. DAG size: 38 [2018-09-18 12:12:39,746 WARN L178 SmtUtils]: Spent 57.05 s on a formula simplification. DAG size of input: 422 DAG size of output: 296 [2018-09-18 12:12:43,245 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 247 proven. 47 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-09-18 12:12:43,246 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:12:43,768 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 292 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-09-18 12:12:43,804 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:12:43,805 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 [2018-09-18 12:12:43,837 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:12:43,837 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:12:44,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:12:44,041 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:12:45,072 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 292 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-09-18 12:12:45,073 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:12:45,283 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 292 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-09-18 12:12:45,285 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 12:12:45,285 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 5, 5] total 15 [2018-09-18 12:12:45,285 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 12:12:45,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-18 12:12:45,286 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-18 12:12:45,286 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=144, Unknown=2, NotChecked=0, Total=210 [2018-09-18 12:12:45,286 INFO L87 Difference]: Start difference. First operand 28016 states and 34088 transitions. Second operand 10 states. [2018-09-18 12:13:01,898 WARN L178 SmtUtils]: Spent 14.18 s on a formula simplification that was a NOOP. DAG size: 101 Received shutdown request... [2018-09-18 12:13:41,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-18 12:13:41,101 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-18 12:13:41,107 WARN L206 ceAbstractionStarter]: Timeout [2018-09-18 12:13:41,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 12:13:41 BoogieIcfgContainer [2018-09-18 12:13:41,107 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-18 12:13:41,108 INFO L168 Benchmark]: Toolchain (without parser) took 258323.75 ms. Allocated memory was 1.5 GB in the beginning and 3.2 GB in the end (delta: 1.7 GB). Free memory was 1.4 GB in the beginning and 2.7 GB in the end (delta: -1.2 GB). Peak memory consumption was 421.2 MB. Max. memory is 7.1 GB. [2018-09-18 12:13:41,109 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. [2018-09-18 12:13:41,110 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1831.24 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. [2018-09-18 12:13:41,111 INFO L168 Benchmark]: Boogie Procedure Inliner took 299.16 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: 53.4 MB). Peak memory consumption was 53.4 MB. Max. memory is 7.1 GB. [2018-09-18 12:13:41,113 INFO L168 Benchmark]: Boogie Preprocessor took 854.75 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 947.4 MB). Free memory was 1.2 GB in the beginning and 2.4 GB in the end (delta: -1.2 GB). Peak memory consumption was 123.6 MB. Max. memory is 7.1 GB. [2018-09-18 12:13:41,114 INFO L168 Benchmark]: RCFGBuilder took 11855.85 ms. Allocated memory is still 2.5 GB. Free memory was 2.4 GB in the beginning and 1.9 GB in the end (delta: 448.5 MB). Peak memory consumption was 448.5 MB. Max. memory is 7.1 GB. [2018-09-18 12:13:41,115 INFO L168 Benchmark]: TraceAbstraction took 243476.15 ms. Allocated memory was 2.5 GB in the beginning and 3.2 GB in the end (delta: 714.6 MB). Free memory was 1.9 GB in the beginning and 2.7 GB in the end (delta: -750.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-09-18 12:13:41,120 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 1831.24 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 299.16 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: 53.4 MB). Peak memory consumption was 53.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 854.75 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 947.4 MB). Free memory was 1.2 GB in the beginning and 2.4 GB in the end (delta: -1.2 GB). Peak memory consumption was 123.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11855.85 ms. Allocated memory is still 2.5 GB. Free memory was 2.4 GB in the beginning and 1.9 GB in the end (delta: 448.5 MB). Peak memory consumption was 448.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 243476.15 ms. Allocated memory was 2.5 GB in the beginning and 3.2 GB in the end (delta: 714.6 MB). Free memory was 1.9 GB in the beginning and 2.7 GB in the end (delta: -750.5 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 155]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 155). Cancelled while BasicCegarLoop was constructing difference of abstraction (28016states) and FLOYD_HOARE automaton (currently 6 states, 10 states before enhancement), while ReachableStatesComputation was computing reachable states (28 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 243.4s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 130.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2338 SDtfs, 10667 SDslu, 2007 SDs, 0 SdLazy, 21748 SolverSat, 4890 SolverUnsat, 22 SolverUnknown, 0 SolverNotchecked, 105.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3003 GetRequests, 2914 SyntacticMatches, 17 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 115.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28016occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.6s AutomataMinimizationTime, 7 MinimizatonAttempts, 3860 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 108.4s InterpolantComputationTime, 2894 NumberOfCodeBlocks, 2894 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 4339 ConstructedInterpolants, 118 QuantifiedInterpolants, 16747972 SizeOfPredicates, 13 NumberOfNonLiveVariables, 2653 ConjunctsInSsa, 51 ConjunctsInUnsatCore, 20 InterpolantComputations, 7 PerfectInterpolantSequences, 3224/3559 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_label03_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-18_12-13-41-135.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem17_label03_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-18_12-13-41-135.csv Completed graceful shutdown