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_label01_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-14 17:58:57,830 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-14 17:58:57,832 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-14 17:58:57,848 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-14 17:58:57,848 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-14 17:58:57,849 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-14 17:58:57,853 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-14 17:58:57,858 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-14 17:58:57,863 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-14 17:58:57,864 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-14 17:58:57,865 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-14 17:58:57,865 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-14 17:58:57,866 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-14 17:58:57,867 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-14 17:58:57,868 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-14 17:58:57,869 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-14 17:58:57,870 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-14 17:58:57,871 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-14 17:58:57,874 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-14 17:58:57,875 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-14 17:58:57,877 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-14 17:58:57,878 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-14 17:58:57,881 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-14 17:58:57,881 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-14 17:58:57,881 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-14 17:58:57,882 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-14 17:58:57,883 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-14 17:58:57,884 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-14 17:58:57,885 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-14 17:58:57,886 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-14 17:58:57,886 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-14 17:58:57,887 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-14 17:58:57,887 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-14 17:58:57,888 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-14 17:58:57,889 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-14 17:58:57,890 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-14 17:58:57,890 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 17:58:57,906 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-14 17:58:57,906 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-14 17:58:57,907 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-14 17:58:57,909 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-14 17:58:57,909 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-14 17:58:57,909 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-14 17:58:57,909 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-14 17:58:57,910 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-14 17:58:57,910 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-14 17:58:57,910 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-14 17:58:57,910 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-14 17:58:57,911 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-14 17:58:57,911 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-14 17:58:57,912 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-14 17:58:57,912 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-14 17:58:57,912 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-14 17:58:57,912 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-14 17:58:57,912 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-14 17:58:57,914 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-14 17:58:57,914 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-14 17:58:57,915 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-14 17:58:57,915 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-14 17:58:57,915 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-14 17:58:57,915 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 17:58:57,915 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-14 17:58:57,916 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-14 17:58:57,916 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-14 17:58:57,916 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-14 17:58:57,916 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-14 17:58:57,916 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-14 17:58:57,916 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-14 17:58:57,917 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-14 17:58:57,917 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-14 17:58:57,989 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-14 17:58:58,007 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-14 17:58:58,015 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-14 17:58:58,017 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-14 17:58:58,017 INFO L276 PluginConnector]: CDTParser initialized [2018-09-14 17:58:58,018 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label01_true-unreach-call.c [2018-09-14 17:58:58,383 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd4f33b0d/4fa91ac3dfd447978fe7b8cf285de218/FLAGfa501c1d8 [2018-09-14 17:58:58,832 INFO L277 CDTParser]: Found 1 translation units. [2018-09-14 17:58:58,833 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label01_true-unreach-call.c [2018-09-14 17:58:58,855 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd4f33b0d/4fa91ac3dfd447978fe7b8cf285de218/FLAGfa501c1d8 [2018-09-14 17:58:58,871 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd4f33b0d/4fa91ac3dfd447978fe7b8cf285de218 [2018-09-14 17:58:58,883 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-14 17:58:58,886 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-14 17:58:58,888 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-14 17:58:58,888 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-14 17:58:58,895 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-14 17:58:58,896 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 05:58:58" (1/1) ... [2018-09-14 17:58:58,899 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56ecc5dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:58:58, skipping insertion in model container [2018-09-14 17:58:58,900 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 05:58:58" (1/1) ... [2018-09-14 17:58:58,912 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-14 17:59:00,064 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 17:59:00,085 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-14 17:59:00,437 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 17:59:00,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:59:00 WrapperNode [2018-09-14 17:59:00,735 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-14 17:59:00,736 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-14 17:59:00,736 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-14 17:59:00,736 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-14 17:59:00,747 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:59:00" (1/1) ... [2018-09-14 17:59:00,850 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:59:00" (1/1) ... [2018-09-14 17:59:01,055 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-14 17:59:01,056 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-14 17:59:01,056 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-14 17:59:01,056 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-14 17:59:01,675 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:59:00" (1/1) ... [2018-09-14 17:59:01,676 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:59:00" (1/1) ... [2018-09-14 17:59:01,710 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:59:00" (1/1) ... [2018-09-14 17:59:01,710 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:59:00" (1/1) ... [2018-09-14 17:59:01,820 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:59:00" (1/1) ... [2018-09-14 17:59:01,859 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:59:00" (1/1) ... [2018-09-14 17:59:01,923 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:59:00" (1/1) ... [2018-09-14 17:59:01,963 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-14 17:59:01,963 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-14 17:59:01,964 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-14 17:59:01,964 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-14 17:59:01,965 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:59:00" (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 17:59:02,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-14 17:59:02,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-14 17:59:02,037 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-14 17:59:02,037 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-14 17:59:02,037 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-14 17:59:02,038 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-14 17:59:02,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-14 17:59:02,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-14 17:59:02,038 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-14 17:59:02,038 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-14 17:59:14,829 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-14 17:59:14,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 05:59:14 BoogieIcfgContainer [2018-09-14 17:59:14,830 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-14 17:59:14,831 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-14 17:59:14,833 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-14 17:59:14,837 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-14 17:59:14,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 05:58:58" (1/3) ... [2018-09-14 17:59:14,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f6748f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 05:59:14, skipping insertion in model container [2018-09-14 17:59:14,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:59:00" (2/3) ... [2018-09-14 17:59:14,839 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f6748f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 05:59:14, skipping insertion in model container [2018-09-14 17:59:14,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 05:59:14" (3/3) ... [2018-09-14 17:59:14,841 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label01_true-unreach-call.c [2018-09-14 17:59:14,851 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-14 17:59:14,860 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-14 17:59:14,919 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-14 17:59:14,920 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-14 17:59:14,920 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-14 17:59:14,920 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-14 17:59:14,920 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-14 17:59:14,920 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-14 17:59:14,921 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-14 17:59:14,921 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-14 17:59:14,921 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-14 17:59:14,967 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-09-14 17:59:14,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-09-14 17:59:14,977 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:59:14,978 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] [2018-09-14 17:59:14,980 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:59:14,985 INFO L82 PathProgramCache]: Analyzing trace with hash -412274706, now seen corresponding path program 1 times [2018-09-14 17:59:14,988 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:59:15,047 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:59:15,048 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:59:15,048 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:59:15,048 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:59:15,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:59:15,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:59:15,544 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:59:15,544 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 17:59:15,544 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:59:15,551 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 17:59:15,566 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 17:59:15,567 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:59:15,571 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-09-14 17:59:28,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:59:28,241 INFO L93 Difference]: Finished difference Result 2139 states and 3961 transitions. [2018-09-14 17:59:28,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 17:59:28,243 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2018-09-14 17:59:28,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:59:28,276 INFO L225 Difference]: With dead ends: 2139 [2018-09-14 17:59:28,277 INFO L226 Difference]: Without dead ends: 1529 [2018-09-14 17:59:28,288 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 17:59:28,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1529 states. [2018-09-14 17:59:28,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1529 to 1527. [2018-09-14 17:59:28,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1527 states. [2018-09-14 17:59:28,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1527 states to 1527 states and 2413 transitions. [2018-09-14 17:59:28,466 INFO L78 Accepts]: Start accepts. Automaton has 1527 states and 2413 transitions. Word has length 53 [2018-09-14 17:59:28,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:59:28,467 INFO L480 AbstractCegarLoop]: Abstraction has 1527 states and 2413 transitions. [2018-09-14 17:59:28,467 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 17:59:28,467 INFO L276 IsEmpty]: Start isEmpty. Operand 1527 states and 2413 transitions. [2018-09-14 17:59:28,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-09-14 17:59:28,481 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:59:28,482 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:59:28,484 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:59:28,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1326175065, now seen corresponding path program 1 times [2018-09-14 17:59:28,485 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:59:28,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:59:28,487 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:59:28,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:59:28,487 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:59:28,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:59:29,012 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:59:29,013 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:59:29,013 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:59:29,030 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:59:29,030 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:59:29,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:59:29,119 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:59:53,912 WARN L178 SmtUtils]: Spent 24.27 s on a formula simplification. DAG size of input: 135 DAG size of output: 98 [2018-09-14 17:59:54,129 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 4 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:59:54,129 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:59:54,431 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2018-09-14 17:59:58,662 WARN L178 SmtUtils]: Spent 2.03 s on a formula simplification. DAG size of input: 133 DAG size of output: 16 [2018-09-14 17:59:58,709 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 28 [2018-09-14 17:59:59,482 WARN L178 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 26 [2018-09-14 17:59:59,919 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:59:59,955 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:59:59,955 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2018-09-14 17:59:59,955 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:59:59,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:59:59,959 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:59:59,959 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=106, Unknown=1, NotChecked=0, Total=156 [2018-09-14 17:59:59,959 INFO L87 Difference]: Start difference. First operand 1527 states and 2413 transitions. Second operand 6 states. [2018-09-14 18:00:44,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:00:44,659 INFO L93 Difference]: Finished difference Result 5759 states and 9382 transitions. [2018-09-14 18:00:44,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-14 18:00:44,661 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 128 [2018-09-14 18:00:44,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:00:44,694 INFO L225 Difference]: With dead ends: 5759 [2018-09-14 18:00:44,695 INFO L226 Difference]: Without dead ends: 4238 [2018-09-14 18:00:44,707 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 251 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 30.0s TimeCoverageRelationStatistics Valid=49, Invalid=106, Unknown=1, NotChecked=0, Total=156 [2018-09-14 18:00:44,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4238 states. [2018-09-14 18:00:44,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4238 to 4204. [2018-09-14 18:00:44,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4204 states. [2018-09-14 18:00:44,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4204 states to 4204 states and 6656 transitions. [2018-09-14 18:00:44,850 INFO L78 Accepts]: Start accepts. Automaton has 4204 states and 6656 transitions. Word has length 128 [2018-09-14 18:00:44,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:00:44,851 INFO L480 AbstractCegarLoop]: Abstraction has 4204 states and 6656 transitions. [2018-09-14 18:00:44,851 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 18:00:44,851 INFO L276 IsEmpty]: Start isEmpty. Operand 4204 states and 6656 transitions. [2018-09-14 18:00:44,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2018-09-14 18:00:44,866 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:00:44,866 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, 2, 2, 2, 2, 2, 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] [2018-09-14 18:00:44,866 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:00:44,867 INFO L82 PathProgramCache]: Analyzing trace with hash -385017723, now seen corresponding path program 1 times [2018-09-14 18:00:44,867 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:00:44,869 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:00:44,869 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:00:44,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:00:44,870 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:00:44,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:00:45,254 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 18:00:45,407 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 93 proven. 7 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-09-14 18:00:45,407 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:00:45,407 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 18:00:45,417 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:00:45,417 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:00:45,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:00:45,515 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:00:45,793 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 165 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:00:45,794 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:00:46,184 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 165 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:00:46,214 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:00:46,214 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 18:00:46,235 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:00:46,236 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:00:46,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:00:46,399 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:00:46,641 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 93 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-09-14 18:00:46,642 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:00:46,835 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-09-14 18:00:46,838 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2018-09-14 18:00:46,838 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5, 5, 5] total 12 [2018-09-14 18:00:46,838 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:00:46,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 18:00:46,840 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 18:00:46,840 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-14 18:00:46,840 INFO L87 Difference]: Start difference. First operand 4204 states and 6656 transitions. Second operand 5 states. [2018-09-14 18:00:54,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:00:54,085 INFO L93 Difference]: Finished difference Result 11977 states and 19634 transitions. [2018-09-14 18:00:54,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-14 18:00:54,089 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 211 [2018-09-14 18:00:54,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:00:54,148 INFO L225 Difference]: With dead ends: 11977 [2018-09-14 18:00:54,148 INFO L226 Difference]: Without dead ends: 7779 [2018-09-14 18:00:54,169 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 852 GetRequests, 834 SyntacticMatches, 7 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-09-14 18:00:54,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7779 states. [2018-09-14 18:00:54,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7779 to 7777. [2018-09-14 18:00:54,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7777 states. [2018-09-14 18:00:54,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7777 states to 7777 states and 11925 transitions. [2018-09-14 18:00:54,417 INFO L78 Accepts]: Start accepts. Automaton has 7777 states and 11925 transitions. Word has length 211 [2018-09-14 18:00:54,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:00:54,418 INFO L480 AbstractCegarLoop]: Abstraction has 7777 states and 11925 transitions. [2018-09-14 18:00:54,418 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 18:00:54,418 INFO L276 IsEmpty]: Start isEmpty. Operand 7777 states and 11925 transitions. [2018-09-14 18:00:54,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2018-09-14 18:00:54,424 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:00:54,424 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, 2, 2, 2, 2, 2, 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] [2018-09-14 18:00:54,424 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:00:54,425 INFO L82 PathProgramCache]: Analyzing trace with hash 320961997, now seen corresponding path program 1 times [2018-09-14 18:00:54,425 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:00:54,426 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:00:54,426 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:00:54,426 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:00:54,426 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:00:54,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:00:54,731 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 18:00:55,218 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 93 proven. 5 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-09-14 18:00:55,219 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:00:55,219 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 18:00:55,235 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:00:55,235 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:00:55,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:00:55,323 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:00:55,676 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 165 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:00:55,676 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:00:55,986 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 165 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:00:56,007 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:00:56,007 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 18:00:56,027 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:00:56,027 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:00:56,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:00:56,194 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:00:56,269 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-09-14 18:00:56,269 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:00:56,564 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-09-14 18:00:56,566 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 3 imperfect interpolant sequences. [2018-09-14 18:00:56,567 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [6, 5, 5] total 13 [2018-09-14 18:00:56,567 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:00:56,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 18:00:56,568 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 18:00:56,568 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-09-14 18:00:56,569 INFO L87 Difference]: Start difference. First operand 7777 states and 11925 transitions. Second operand 5 states. [2018-09-14 18:01:02,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:01:02,948 INFO L93 Difference]: Finished difference Result 19640 states and 30311 transitions. [2018-09-14 18:01:02,949 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-14 18:01:02,949 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 215 [2018-09-14 18:01:02,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:01:03,017 INFO L225 Difference]: With dead ends: 19640 [2018-09-14 18:01:03,018 INFO L226 Difference]: Without dead ends: 11869 [2018-09-14 18:01:03,052 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 868 GetRequests, 849 SyntacticMatches, 7 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2018-09-14 18:01:03,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11869 states. [2018-09-14 18:01:03,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11869 to 11850. [2018-09-14 18:01:03,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11850 states. [2018-09-14 18:01:03,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11850 states to 11850 states and 16870 transitions. [2018-09-14 18:01:03,356 INFO L78 Accepts]: Start accepts. Automaton has 11850 states and 16870 transitions. Word has length 215 [2018-09-14 18:01:03,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:01:03,357 INFO L480 AbstractCegarLoop]: Abstraction has 11850 states and 16870 transitions. [2018-09-14 18:01:03,357 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 18:01:03,357 INFO L276 IsEmpty]: Start isEmpty. Operand 11850 states and 16870 transitions. [2018-09-14 18:01:03,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-09-14 18:01:03,364 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:01:03,365 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 18:01:03,365 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:01:03,365 INFO L82 PathProgramCache]: Analyzing trace with hash -1931953849, now seen corresponding path program 1 times [2018-09-14 18:01:03,366 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:01:03,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:01:03,367 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:01:03,367 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:01:03,367 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:01:03,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:01:03,683 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 18:01:03,982 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 118 proven. 54 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-09-14 18:01:03,982 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:01:03,982 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 18:01:03,989 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:01:03,990 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:01:04,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:01:04,068 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:01:04,255 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-09-14 18:01:04,255 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:01:04,517 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-09-14 18:01:04,539 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-14 18:01:04,539 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-09-14 18:01:04,539 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:01:04,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 18:01:04,540 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 18:01:04,540 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-09-14 18:01:04,540 INFO L87 Difference]: Start difference. First operand 11850 states and 16870 transitions. Second operand 3 states. [2018-09-14 18:01:07,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:01:07,970 INFO L93 Difference]: Finished difference Result 23680 states and 33747 transitions. [2018-09-14 18:01:07,971 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 18:01:07,971 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 228 [2018-09-14 18:01:07,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:01:08,010 INFO L225 Difference]: With dead ends: 23680 [2018-09-14 18:01:08,010 INFO L226 Difference]: Without dead ends: 11836 [2018-09-14 18:01:08,060 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 456 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-09-14 18:01:08,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11836 states. [2018-09-14 18:01:08,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11836 to 11836. [2018-09-14 18:01:08,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11836 states. [2018-09-14 18:01:08,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11836 states to 11836 states and 16014 transitions. [2018-09-14 18:01:08,310 INFO L78 Accepts]: Start accepts. Automaton has 11836 states and 16014 transitions. Word has length 228 [2018-09-14 18:01:08,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:01:08,311 INFO L480 AbstractCegarLoop]: Abstraction has 11836 states and 16014 transitions. [2018-09-14 18:01:08,311 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 18:01:08,311 INFO L276 IsEmpty]: Start isEmpty. Operand 11836 states and 16014 transitions. [2018-09-14 18:01:08,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2018-09-14 18:01:08,323 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:01:08,323 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-09-14 18:01:08,323 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:01:08,324 INFO L82 PathProgramCache]: Analyzing trace with hash 1967517566, now seen corresponding path program 1 times [2018-09-14 18:01:08,324 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:01:08,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:01:08,325 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:01:08,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:01:08,325 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:01:08,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:01:08,905 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 314 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-09-14 18:01:08,906 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:01:08,906 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 18:01:08,914 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:01:08,914 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:01:09,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:01:09,022 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:01:09,141 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 314 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-09-14 18:01:09,142 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:01:09,287 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 314 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-09-14 18:01:09,308 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:01:09,309 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 9 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 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 18:01:09,324 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:01:09,324 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:01:09,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:01:09,561 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:01:09,781 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 314 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-09-14 18:01:09,781 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:01:10,483 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 314 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-09-14 18:01:10,486 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 18:01:10,487 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 8 [2018-09-14 18:01:10,487 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 18:01:10,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-14 18:01:10,488 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-14 18:01:10,488 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-09-14 18:01:10,489 INFO L87 Difference]: Start difference. First operand 11836 states and 16014 transitions. Second operand 7 states. [2018-09-14 18:01:21,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:01:21,947 INFO L93 Difference]: Finished difference Result 30579 states and 42945 transitions. [2018-09-14 18:01:21,947 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-14 18:01:21,947 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 327 [2018-09-14 18:01:21,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:01:22,025 INFO L225 Difference]: With dead ends: 30579 [2018-09-14 18:01:22,026 INFO L226 Difference]: Without dead ends: 18276 [2018-09-14 18:01:22,053 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1320 GetRequests, 1306 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2018-09-14 18:01:22,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18276 states. [2018-09-14 18:01:22,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18276 to 17274. [2018-09-14 18:01:22,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17274 states. [2018-09-14 18:01:22,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17274 states to 17274 states and 21901 transitions. [2018-09-14 18:01:22,443 INFO L78 Accepts]: Start accepts. Automaton has 17274 states and 21901 transitions. Word has length 327 [2018-09-14 18:01:22,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:01:22,444 INFO L480 AbstractCegarLoop]: Abstraction has 17274 states and 21901 transitions. [2018-09-14 18:01:22,444 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-14 18:01:22,444 INFO L276 IsEmpty]: Start isEmpty. Operand 17274 states and 21901 transitions. [2018-09-14 18:01:22,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2018-09-14 18:01:22,459 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:01:22,459 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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 18:01:22,459 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:01:22,460 INFO L82 PathProgramCache]: Analyzing trace with hash 670201538, now seen corresponding path program 1 times [2018-09-14 18:01:22,460 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:01:22,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:01:22,461 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:01:22,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:01:22,461 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:01:22,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:01:23,584 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 150 proven. 258 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 18:01:23,584 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:01:23,584 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 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 18:01:23,592 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:01:23,592 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:01:23,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:01:23,705 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:01:24,362 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 364 proven. 2 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2018-09-14 18:01:24,362 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:01:25,184 WARN L178 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-09-14 18:01:25,518 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2018-09-14 18:01:25,669 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2018-09-14 18:01:25,996 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 18:01:27,089 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 144 proven. 264 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 18:01:27,113 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:01:27,114 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 11 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 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 18:01:27,129 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:01:27,129 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:01:27,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:01:27,380 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:01:29,543 WARN L178 SmtUtils]: Spent 2.11 s on a formula simplification. DAG size of input: 48 DAG size of output: 21 [2018-09-14 18:01:29,735 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 364 proven. 2 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2018-09-14 18:01:29,735 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:01:29,971 WARN L178 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 27 [2018-09-14 18:01:30,091 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 39 [2018-09-14 18:01:32,566 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 18:01:33,228 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 144 proven. 264 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 18:01:33,230 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 18:01:33,231 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8, 8, 8] total 26 [2018-09-14 18:01:33,231 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 18:01:33,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-14 18:01:33,232 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-14 18:01:33,233 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=524, Unknown=0, NotChecked=0, Total=650 [2018-09-14 18:01:33,233 INFO L87 Difference]: Start difference. First operand 17274 states and 21901 transitions. Second operand 15 states. [2018-09-14 18:02:06,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:02:06,496 INFO L93 Difference]: Finished difference Result 49927 states and 65735 transitions. [2018-09-14 18:02:06,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-09-14 18:02:06,497 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 350 [2018-09-14 18:02:06,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:02:06,607 INFO L225 Difference]: With dead ends: 49927 [2018-09-14 18:02:06,607 INFO L226 Difference]: Without dead ends: 32190 [2018-09-14 18:02:06,649 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1512 GetRequests, 1424 SyntacticMatches, 10 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2075 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=1271, Invalid=5049, Unknown=0, NotChecked=0, Total=6320 [2018-09-14 18:02:06,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32190 states. [2018-09-14 18:02:07,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32190 to 26604. [2018-09-14 18:02:07,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26604 states. [2018-09-14 18:02:07,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26604 states to 26604 states and 34240 transitions. [2018-09-14 18:02:07,510 INFO L78 Accepts]: Start accepts. Automaton has 26604 states and 34240 transitions. Word has length 350 [2018-09-14 18:02:07,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:02:07,511 INFO L480 AbstractCegarLoop]: Abstraction has 26604 states and 34240 transitions. [2018-09-14 18:02:07,511 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-14 18:02:07,511 INFO L276 IsEmpty]: Start isEmpty. Operand 26604 states and 34240 transitions. [2018-09-14 18:02:07,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2018-09-14 18:02:07,526 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:02:07,526 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:02:07,527 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:02:07,527 INFO L82 PathProgramCache]: Analyzing trace with hash 1021803679, now seen corresponding path program 1 times [2018-09-14 18:02:07,527 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:02:07,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:02:07,528 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:02:07,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:02:07,528 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:02:07,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:02:08,456 WARN L178 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2018-09-14 18:02:09,526 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 146 proven. 262 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 18:02:09,526 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:02:09,526 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 18:02:09,533 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:02:09,534 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:02:09,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:02:09,659 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:02:10,437 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 311 proven. 55 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2018-09-14 18:02:10,437 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:02:10,774 WARN L178 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2018-09-14 18:02:11,132 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-14 18:02:11,193 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 108 [2018-09-14 18:02:11,986 WARN L178 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 38 [2018-09-14 18:02:12,907 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 148 proven. 260 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 18:02:12,928 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:02:12,928 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 18:02:12,945 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:02:12,945 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:02:13,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:02:13,208 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:02:22,392 WARN L178 SmtUtils]: Spent 8.63 s on a formula simplification. DAG size of input: 92 DAG size of output: 56 [2018-09-14 18:02:22,923 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 279 proven. 87 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2018-09-14 18:02:22,924 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:02:23,807 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 18 [2018-09-14 18:02:25,748 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 18:02:27,327 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 151 proven. 262 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:02:27,330 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 18:02:27,330 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 10, 12, 16] total 52 [2018-09-14 18:02:27,330 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 18:02:27,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-09-14 18:02:27,332 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-09-14 18:02:27,332 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=446, Invalid=2206, Unknown=0, NotChecked=0, Total=2652 [2018-09-14 18:02:27,333 INFO L87 Difference]: Start difference. First operand 26604 states and 34240 transitions. Second operand 22 states. [2018-09-14 18:02:29,298 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 42 [2018-09-14 18:02:29,643 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 46 [2018-09-14 18:02:30,002 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 38 [2018-09-14 18:02:33,195 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 42 [2018-09-14 18:02:34,805 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2018-09-14 18:02:36,330 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 47 [2018-09-14 18:02:36,765 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 42 [2018-09-14 18:02:42,513 WARN L178 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 14 [2018-09-14 18:02:43,370 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 47 [2018-09-14 18:02:46,309 WARN L178 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 45 [2018-09-14 18:02:49,557 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 47 [2018-09-14 18:02:50,410 WARN L178 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 20 [2018-09-14 18:02:51,231 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 48 [2018-09-14 18:02:52,132 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 41 [2018-09-14 18:02:52,449 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 52 [2018-09-14 18:02:59,253 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 47 Received shutdown request... [2018-09-14 18:03:00,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-09-14 18:03:00,451 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-14 18:03:00,457 WARN L206 ceAbstractionStarter]: Timeout [2018-09-14 18:03:00,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 06:03:00 BoogieIcfgContainer [2018-09-14 18:03:00,457 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-14 18:03:00,458 INFO L168 Benchmark]: Toolchain (without parser) took 241574.63 ms. Allocated memory was 1.5 GB in the beginning and 3.7 GB in the end (delta: 2.1 GB). Free memory was 1.4 GB in the beginning and 2.4 GB in the end (delta: -1.0 GB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-09-14 18:03:00,459 INFO L168 Benchmark]: CDTParser took 0.32 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 18:03:00,460 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1847.44 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: 171.8 MB). Peak memory consumption was 171.8 MB. Max. memory is 7.1 GB. [2018-09-14 18:03:00,460 INFO L168 Benchmark]: Boogie Procedure Inliner took 319.52 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. [2018-09-14 18:03:00,461 INFO L168 Benchmark]: Boogie Preprocessor took 907.33 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 931.7 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 123.5 MB. Max. memory is 7.1 GB. [2018-09-14 18:03:00,461 INFO L168 Benchmark]: RCFGBuilder took 12866.49 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: 462.6 MB). Peak memory consumption was 462.6 MB. Max. memory is 7.1 GB. [2018-09-14 18:03:00,462 INFO L168 Benchmark]: TraceAbstraction took 225626.49 ms. Allocated memory was 2.5 GB in the beginning and 3.7 GB in the end (delta: 1.2 GB). Free memory was 1.9 GB in the beginning and 2.4 GB in the end (delta: -564.6 MB). Peak memory consumption was 638.6 MB. Max. memory is 7.1 GB. [2018-09-14 18:03:00,467 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 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 1847.44 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: 171.8 MB). Peak memory consumption was 171.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 319.52 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 907.33 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 931.7 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 123.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 12866.49 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: 462.6 MB). Peak memory consumption was 462.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 225626.49 ms. Allocated memory was 2.5 GB in the beginning and 3.7 GB in the end (delta: 1.2 GB). Free memory was 1.9 GB in the beginning and 2.4 GB in the end (delta: -564.6 MB). Peak memory consumption was 638.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 146]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 146). Cancelled while BasicCegarLoop was constructing difference of abstraction (26604states) and FLOYD_HOARE automaton (currently 82 states, 22 states before enhancement), while ReachableStatesComputation was computing reachable states (19914 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 225.5s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 152.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2420 SDtfs, 38601 SDslu, 3483 SDs, 0 SdLazy, 43081 SolverSat, 10522 SolverUnsat, 12 SolverUnknown, 0 SolverNotchecked, 128.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7096 GetRequests, 6797 SyntacticMatches, 44 SemanticMatches, 255 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7052 ImplicationChecksByTransitivity, 64.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26604occurred 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: 2.3s AutomataMinimizationTime, 7 MinimizatonAttempts, 6645 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 66.2s InterpolantComputationTime, 5319 NumberOfCodeBlocks, 5319 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 8679 ConstructedInterpolants, 638 QuantifiedInterpolants, 28193141 SizeOfPredicates, 44 NumberOfNonLiveVariables, 5898 ConjunctsInSsa, 152 ConjunctsInUnsatCore, 32 InterpolantComputations, 7 PerfectInterpolantSequences, 6585/8475 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_label01_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-14_18-03-00-480.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem17_label01_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-14_18-03-00-480.csv Completed graceful shutdown