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/Problem15_label04_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-14 17:42:24,942 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-14 17:42:24,943 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-14 17:42:24,956 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-14 17:42:24,957 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-14 17:42:24,958 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-14 17:42:24,960 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-14 17:42:24,962 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-14 17:42:24,963 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-14 17:42:24,964 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-14 17:42:24,965 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-14 17:42:24,965 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-14 17:42:24,966 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-14 17:42:24,967 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-14 17:42:24,969 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-14 17:42:24,970 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-14 17:42:24,970 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-14 17:42:24,972 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-14 17:42:24,974 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-14 17:42:24,976 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-14 17:42:24,977 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-14 17:42:24,978 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-14 17:42:24,981 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-14 17:42:24,981 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-14 17:42:24,981 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-14 17:42:24,982 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-14 17:42:24,983 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-14 17:42:24,984 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-14 17:42:24,985 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-14 17:42:24,986 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-14 17:42:24,987 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-14 17:42:24,987 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-14 17:42:24,988 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-14 17:42:24,988 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-14 17:42:24,989 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-14 17:42:24,990 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-14 17:42:24,990 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 17:42:25,009 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-14 17:42:25,009 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-14 17:42:25,010 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-14 17:42:25,011 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-14 17:42:25,011 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-14 17:42:25,011 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-14 17:42:25,011 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-14 17:42:25,011 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-14 17:42:25,012 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-14 17:42:25,012 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-14 17:42:25,012 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-14 17:42:25,014 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-14 17:42:25,015 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-14 17:42:25,015 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-14 17:42:25,015 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-14 17:42:25,015 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-14 17:42:25,016 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-14 17:42:25,017 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-14 17:42:25,017 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-14 17:42:25,017 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-14 17:42:25,017 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-14 17:42:25,018 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-14 17:42:25,018 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-14 17:42:25,018 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 17:42:25,018 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-14 17:42:25,019 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-14 17:42:25,019 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-14 17:42:25,019 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-14 17:42:25,019 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-14 17:42:25,019 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-14 17:42:25,019 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-14 17:42:25,020 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-14 17:42:25,020 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-14 17:42:25,079 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-14 17:42:25,095 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-14 17:42:25,100 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-14 17:42:25,102 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-14 17:42:25,102 INFO L276 PluginConnector]: CDTParser initialized [2018-09-14 17:42:25,103 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label04_true-unreach-call.c [2018-09-14 17:42:25,445 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d031b8f41/962289e3ae2a405c90aa3bfb142438c3/FLAGe6e1f13ca [2018-09-14 17:42:25,839 INFO L277 CDTParser]: Found 1 translation units. [2018-09-14 17:42:25,840 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label04_true-unreach-call.c [2018-09-14 17:42:25,857 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d031b8f41/962289e3ae2a405c90aa3bfb142438c3/FLAGe6e1f13ca [2018-09-14 17:42:25,873 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d031b8f41/962289e3ae2a405c90aa3bfb142438c3 [2018-09-14 17:42:25,884 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-14 17:42:25,887 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-14 17:42:25,889 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-14 17:42:25,889 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-14 17:42:25,896 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-14 17:42:25,897 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 05:42:25" (1/1) ... [2018-09-14 17:42:25,900 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b894ac6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:42:25, skipping insertion in model container [2018-09-14 17:42:25,900 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 05:42:25" (1/1) ... [2018-09-14 17:42:25,912 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-14 17:42:26,733 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 17:42:26,751 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-14 17:42:27,059 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 17:42:27,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:42:27 WrapperNode [2018-09-14 17:42:27,233 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-14 17:42:27,234 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-14 17:42:27,234 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-14 17:42:27,235 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-14 17:42:27,244 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:42:27" (1/1) ... [2018-09-14 17:42:27,308 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:42:27" (1/1) ... [2018-09-14 17:42:27,535 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-14 17:42:27,536 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-14 17:42:27,536 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-14 17:42:27,536 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-14 17:42:27,961 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:42:27" (1/1) ... [2018-09-14 17:42:27,962 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:42:27" (1/1) ... [2018-09-14 17:42:27,986 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:42:27" (1/1) ... [2018-09-14 17:42:27,987 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:42:27" (1/1) ... [2018-09-14 17:42:28,103 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:42:27" (1/1) ... [2018-09-14 17:42:28,124 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:42:27" (1/1) ... [2018-09-14 17:42:28,169 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:42:27" (1/1) ... [2018-09-14 17:42:28,210 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-14 17:42:28,212 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-14 17:42:28,212 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-14 17:42:28,212 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-14 17:42:28,215 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:42:27" (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 17:42:28,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-14 17:42:28,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-14 17:42:28,286 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-14 17:42:28,286 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-14 17:42:28,286 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-14 17:42:28,286 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-14 17:42:28,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-14 17:42:28,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-14 17:42:28,287 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-14 17:42:28,287 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-14 17:42:35,860 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-14 17:42:35,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 05:42:35 BoogieIcfgContainer [2018-09-14 17:42:35,861 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-14 17:42:35,862 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-14 17:42:35,862 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-14 17:42:35,866 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-14 17:42:35,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 05:42:25" (1/3) ... [2018-09-14 17:42:35,868 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@208b318d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 05:42:35, skipping insertion in model container [2018-09-14 17:42:35,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:42:27" (2/3) ... [2018-09-14 17:42:35,868 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@208b318d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 05:42:35, skipping insertion in model container [2018-09-14 17:42:35,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 05:42:35" (3/3) ... [2018-09-14 17:42:35,870 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label04_true-unreach-call.c [2018-09-14 17:42:35,881 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-14 17:42:35,891 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-14 17:42:35,950 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-14 17:42:35,951 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-14 17:42:35,951 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-14 17:42:35,952 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-14 17:42:35,952 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-14 17:42:35,952 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-14 17:42:35,952 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-14 17:42:35,952 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-14 17:42:35,952 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-14 17:42:35,984 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-09-14 17:42:35,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-09-14 17:42:35,993 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:42:35,995 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] [2018-09-14 17:42:35,996 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:42:36,001 INFO L82 PathProgramCache]: Analyzing trace with hash 1812068772, now seen corresponding path program 1 times [2018-09-14 17:42:36,004 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:42:36,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:42:36,064 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:42:36,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:42:36,065 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:42:36,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:42:36,516 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 17:42:36,519 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:42:36,519 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 17:42:36,519 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:42:36,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 17:42:36,541 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 17:42:36,542 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:42:36,545 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-09-14 17:42:44,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:42:44,898 INFO L93 Difference]: Finished difference Result 1514 states and 2777 transitions. [2018-09-14 17:42:44,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 17:42:44,899 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2018-09-14 17:42:44,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:42:44,928 INFO L225 Difference]: With dead ends: 1514 [2018-09-14 17:42:44,928 INFO L226 Difference]: Without dead ends: 1070 [2018-09-14 17:42:44,947 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:42:44,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1070 states. [2018-09-14 17:42:45,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1070 to 1068. [2018-09-14 17:42:45,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2018-09-14 17:42:45,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1675 transitions. [2018-09-14 17:42:45,080 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1675 transitions. Word has length 38 [2018-09-14 17:42:45,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:42:45,080 INFO L480 AbstractCegarLoop]: Abstraction has 1068 states and 1675 transitions. [2018-09-14 17:42:45,080 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 17:42:45,081 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1675 transitions. [2018-09-14 17:42:45,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-09-14 17:42:45,086 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:42:45,087 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:42:45,087 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:42:45,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1548201903, now seen corresponding path program 1 times [2018-09-14 17:42:45,088 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:42:45,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:42:45,089 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:42:45,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:42:45,090 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:42:45,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:42:45,350 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:42:45,350 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:42:45,351 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 17:42:45,351 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:42:45,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 17:42:45,353 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 17:42:45,353 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:42:45,354 INFO L87 Difference]: Start difference. First operand 1068 states and 1675 transitions. Second operand 4 states. [2018-09-14 17:42:51,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:42:51,463 INFO L93 Difference]: Finished difference Result 3988 states and 6459 transitions. [2018-09-14 17:42:51,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 17:42:51,470 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 108 [2018-09-14 17:42:51,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:42:51,494 INFO L225 Difference]: With dead ends: 3988 [2018-09-14 17:42:51,495 INFO L226 Difference]: Without dead ends: 2926 [2018-09-14 17:42:51,504 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:42:51,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2926 states. [2018-09-14 17:42:51,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2926 to 2613. [2018-09-14 17:42:51,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2613 states. [2018-09-14 17:42:51,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2613 states to 2613 states and 3832 transitions. [2018-09-14 17:42:51,605 INFO L78 Accepts]: Start accepts. Automaton has 2613 states and 3832 transitions. Word has length 108 [2018-09-14 17:42:51,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:42:51,605 INFO L480 AbstractCegarLoop]: Abstraction has 2613 states and 3832 transitions. [2018-09-14 17:42:51,605 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 17:42:51,606 INFO L276 IsEmpty]: Start isEmpty. Operand 2613 states and 3832 transitions. [2018-09-14 17:42:51,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2018-09-14 17:42:51,627 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:42:51,628 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:42:51,628 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:42:51,629 INFO L82 PathProgramCache]: Analyzing trace with hash 1266247063, now seen corresponding path program 1 times [2018-09-14 17:42:51,629 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:42:51,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:42:51,630 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:42:51,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:42:51,630 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:42:51,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:42:52,249 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 101 proven. 237 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-09-14 17:42:52,249 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:42:52,250 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 17:42:52,261 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:42:52,261 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:42:52,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:42:52,449 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:42:53,488 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 242 proven. 2 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-09-14 17:42:53,489 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:42:54,391 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 103 proven. 241 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:42:54,412 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:42:54,413 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 3 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 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:42:54,434 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:42:54,434 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:42:54,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:42:54,681 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:42:54,910 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 270 proven. 2 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2018-09-14 17:42:54,911 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:42:55,290 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 270 proven. 2 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2018-09-14 17:42:55,294 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:42:55,295 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 8, 5, 5] total 21 [2018-09-14 17:42:55,295 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:42:55,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-14 17:42:55,297 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-14 17:42:55,298 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2018-09-14 17:42:55,298 INFO L87 Difference]: Start difference. First operand 2613 states and 3832 transitions. Second operand 11 states. [2018-09-14 17:42:56,887 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-09-14 17:43:31,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:43:31,359 INFO L93 Difference]: Finished difference Result 22006 states and 34086 transitions. [2018-09-14 17:43:31,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-09-14 17:43:31,360 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 314 [2018-09-14 17:43:31,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:43:31,500 INFO L225 Difference]: With dead ends: 22006 [2018-09-14 17:43:31,500 INFO L226 Difference]: Without dead ends: 19399 [2018-09-14 17:43:31,570 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1362 GetRequests, 1291 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1319 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=947, Invalid=4023, Unknown=0, NotChecked=0, Total=4970 [2018-09-14 17:43:31,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19399 states. [2018-09-14 17:43:32,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19399 to 19171. [2018-09-14 17:43:32,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19171 states. [2018-09-14 17:43:32,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19171 states to 19171 states and 25204 transitions. [2018-09-14 17:43:32,143 INFO L78 Accepts]: Start accepts. Automaton has 19171 states and 25204 transitions. Word has length 314 [2018-09-14 17:43:32,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:43:32,144 INFO L480 AbstractCegarLoop]: Abstraction has 19171 states and 25204 transitions. [2018-09-14 17:43:32,147 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-14 17:43:32,147 INFO L276 IsEmpty]: Start isEmpty. Operand 19171 states and 25204 transitions. [2018-09-14 17:43:32,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2018-09-14 17:43:32,162 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:43:32,162 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:43:32,163 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:43:32,163 INFO L82 PathProgramCache]: Analyzing trace with hash -760194987, now seen corresponding path program 1 times [2018-09-14 17:43:32,163 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:43:32,164 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:43:32,164 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:43:32,164 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:43:32,165 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:43:32,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:43:32,650 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 160 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:43:32,650 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:43:32,650 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:43:32,658 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:43:32,658 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:43:32,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:43:32,896 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:43:33,082 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 160 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:43:33,082 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:43:33,225 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 160 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:43:33,251 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:43:33,251 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:43:33,267 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:43:33,267 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:43:33,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:43:33,481 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:43:33,586 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 160 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:43:33,587 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:43:33,845 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 160 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:43:33,847 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:43:33,847 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-14 17:43:33,847 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:43:33,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 17:43:33,849 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 17:43:33,850 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-14 17:43:33,850 INFO L87 Difference]: Start difference. First operand 19171 states and 25204 transitions. Second operand 9 states. [2018-09-14 17:43:46,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:43:46,163 INFO L93 Difference]: Finished difference Result 51705 states and 76685 transitions. [2018-09-14 17:43:46,164 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-09-14 17:43:46,164 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 339 [2018-09-14 17:43:46,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:43:46,411 INFO L225 Difference]: With dead ends: 51705 [2018-09-14 17:43:46,412 INFO L226 Difference]: Without dead ends: 32540 [2018-09-14 17:43:46,598 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1378 GetRequests, 1352 SyntacticMatches, 6 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=146, Invalid=316, Unknown=0, NotChecked=0, Total=462 [2018-09-14 17:43:46,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32540 states. [2018-09-14 17:43:47,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32540 to 32273. [2018-09-14 17:43:47,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32273 states. [2018-09-14 17:43:47,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32273 states to 32273 states and 42363 transitions. [2018-09-14 17:43:47,641 INFO L78 Accepts]: Start accepts. Automaton has 32273 states and 42363 transitions. Word has length 339 [2018-09-14 17:43:47,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:43:47,642 INFO L480 AbstractCegarLoop]: Abstraction has 32273 states and 42363 transitions. [2018-09-14 17:43:47,642 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 17:43:47,642 INFO L276 IsEmpty]: Start isEmpty. Operand 32273 states and 42363 transitions. [2018-09-14 17:43:47,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2018-09-14 17:43:47,676 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:43:47,676 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:43:47,677 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:43:47,677 INFO L82 PathProgramCache]: Analyzing trace with hash 1435940887, now seen corresponding path program 1 times [2018-09-14 17:43:47,677 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:43:47,678 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:43:47,678 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:43:47,678 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:43:47,678 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:43:47,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:43:48,437 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2018-09-14 17:43:48,437 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:43:48,437 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-14 17:43:48,438 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:43:48,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 17:43:48,439 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 17:43:48,439 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 17:43:48,439 INFO L87 Difference]: Start difference. First operand 32273 states and 42363 transitions. Second operand 3 states. [2018-09-14 17:43:53,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:43:53,819 INFO L93 Difference]: Finished difference Result 69044 states and 95279 transitions. [2018-09-14 17:43:53,819 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 17:43:53,820 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 480 [2018-09-14 17:43:53,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:43:54,001 INFO L225 Difference]: With dead ends: 69044 [2018-09-14 17:43:54,001 INFO L226 Difference]: Without dead ends: 36777 [2018-09-14 17:43:54,166 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 17:43:54,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36777 states. [2018-09-14 17:43:54,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36777 to 36773. [2018-09-14 17:43:54,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36773 states. [2018-09-14 17:43:55,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36773 states to 36773 states and 48887 transitions. [2018-09-14 17:43:55,009 INFO L78 Accepts]: Start accepts. Automaton has 36773 states and 48887 transitions. Word has length 480 [2018-09-14 17:43:55,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:43:55,010 INFO L480 AbstractCegarLoop]: Abstraction has 36773 states and 48887 transitions. [2018-09-14 17:43:55,010 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 17:43:55,010 INFO L276 IsEmpty]: Start isEmpty. Operand 36773 states and 48887 transitions. [2018-09-14 17:43:55,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 548 [2018-09-14 17:43:55,066 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:43:55,066 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:43:55,070 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:43:55,070 INFO L82 PathProgramCache]: Analyzing trace with hash -1086962677, now seen corresponding path program 1 times [2018-09-14 17:43:55,070 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:43:55,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:43:55,071 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:43:55,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:43:55,071 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:43:55,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:43:56,125 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 410 proven. 2 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2018-09-14 17:43:56,125 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:43:56,125 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:43:56,141 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:43:56,141 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:43:56,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:43:56,299 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:43:56,617 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 410 proven. 2 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2018-09-14 17:43:56,617 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:43:57,333 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 410 proven. 2 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2018-09-14 17:43:57,355 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:43:57,355 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:43:57,372 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:43:57,372 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:43:57,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:43:57,730 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:43:58,254 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 410 proven. 2 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2018-09-14 17:43:58,255 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:43:58,767 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 410 proven. 2 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2018-09-14 17:43:58,769 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:43:58,769 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5] total 7 [2018-09-14 17:43:58,769 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:43:58,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:43:58,770 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:43:58,770 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-09-14 17:43:58,771 INFO L87 Difference]: Start difference. First operand 36773 states and 48887 transitions. Second operand 6 states. [2018-09-14 17:44:11,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:44:11,742 INFO L93 Difference]: Finished difference Result 95383 states and 130942 transitions. [2018-09-14 17:44:11,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-14 17:44:11,742 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 547 [2018-09-14 17:44:11,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:44:12,003 INFO L225 Difference]: With dead ends: 95383 [2018-09-14 17:44:12,003 INFO L226 Difference]: Without dead ends: 58616 [2018-09-14 17:44:12,227 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2201 GetRequests, 2185 SyntacticMatches, 6 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-09-14 17:44:12,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58616 states. [2018-09-14 17:44:13,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58616 to 56072. [2018-09-14 17:44:13,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56072 states. [2018-09-14 17:44:13,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56072 states to 56072 states and 70801 transitions. [2018-09-14 17:44:13,460 INFO L78 Accepts]: Start accepts. Automaton has 56072 states and 70801 transitions. Word has length 547 [2018-09-14 17:44:13,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:44:13,461 INFO L480 AbstractCegarLoop]: Abstraction has 56072 states and 70801 transitions. [2018-09-14 17:44:13,461 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:44:13,461 INFO L276 IsEmpty]: Start isEmpty. Operand 56072 states and 70801 transitions. [2018-09-14 17:44:13,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 582 [2018-09-14 17:44:13,554 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:44:13,554 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:44:13,555 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:44:13,555 INFO L82 PathProgramCache]: Analyzing trace with hash -423313334, now seen corresponding path program 1 times [2018-09-14 17:44:13,555 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:44:13,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:44:13,556 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:44:13,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:44:13,556 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:44:13,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:44:14,011 INFO L134 CoverageAnalysis]: Checked inductivity of 778 backedges. 140 proven. 2 refuted. 0 times theorem prover too weak. 636 trivial. 0 not checked. [2018-09-14 17:44:14,012 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:44:14,012 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 17:44:14,021 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:44:14,021 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:44:14,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:44:14,182 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:44:14,387 INFO L134 CoverageAnalysis]: Checked inductivity of 778 backedges. 399 proven. 0 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2018-09-14 17:44:14,388 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:44:15,106 INFO L134 CoverageAnalysis]: Checked inductivity of 778 backedges. 140 proven. 2 refuted. 0 times theorem prover too weak. 636 trivial. 0 not checked. [2018-09-14 17:44:15,127 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:44:15,127 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 4 [2018-09-14 17:44:15,127 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:44:15,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 17:44:15,128 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 17:44:15,128 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:44:15,128 INFO L87 Difference]: Start difference. First operand 56072 states and 70801 transitions. Second operand 3 states. [2018-09-14 17:44:18,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:44:18,483 INFO L93 Difference]: Finished difference Result 112443 states and 142131 transitions. [2018-09-14 17:44:18,483 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 17:44:18,483 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 581 [2018-09-14 17:44:18,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:44:18,775 INFO L225 Difference]: With dead ends: 112443 [2018-09-14 17:44:18,775 INFO L226 Difference]: Without dead ends: 56377 [2018-09-14 17:44:19,011 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1164 GetRequests, 1162 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:44:19,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56377 states. [2018-09-14 17:44:19,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56377 to 56063. [2018-09-14 17:44:19,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56063 states. [2018-09-14 17:44:20,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56063 states to 56063 states and 70733 transitions. [2018-09-14 17:44:20,231 INFO L78 Accepts]: Start accepts. Automaton has 56063 states and 70733 transitions. Word has length 581 [2018-09-14 17:44:20,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:44:20,232 INFO L480 AbstractCegarLoop]: Abstraction has 56063 states and 70733 transitions. [2018-09-14 17:44:20,232 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 17:44:20,232 INFO L276 IsEmpty]: Start isEmpty. Operand 56063 states and 70733 transitions. [2018-09-14 17:44:20,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 591 [2018-09-14 17:44:20,292 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:44:20,292 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 17:44:20,292 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:44:20,293 INFO L82 PathProgramCache]: Analyzing trace with hash 1221243772, now seen corresponding path program 1 times [2018-09-14 17:44:20,293 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:44:20,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:44:20,294 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:44:20,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:44:20,294 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:44:20,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:44:21,625 INFO L134 CoverageAnalysis]: Checked inductivity of 738 backedges. 411 proven. 2 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2018-09-14 17:44:21,626 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:44:21,626 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-09-14 17:44:21,641 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:44:21,641 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:44:21,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:44:21,801 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:44:22,000 INFO L134 CoverageAnalysis]: Checked inductivity of 738 backedges. 411 proven. 2 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2018-09-14 17:44:22,000 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:44:22,269 INFO L134 CoverageAnalysis]: Checked inductivity of 738 backedges. 411 proven. 2 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2018-09-14 17:44:22,291 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:44:22,292 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:44:22,308 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:44:22,308 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:44:22,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:44:22,665 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:44:22,874 INFO L134 CoverageAnalysis]: Checked inductivity of 738 backedges. 411 proven. 2 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2018-09-14 17:44:22,874 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:44:23,502 INFO L134 CoverageAnalysis]: Checked inductivity of 738 backedges. 411 proven. 2 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2018-09-14 17:44:23,504 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:44:23,504 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-14 17:44:23,505 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:44:23,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 17:44:23,506 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 17:44:23,506 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-14 17:44:23,507 INFO L87 Difference]: Start difference. First operand 56063 states and 70733 transitions. Second operand 9 states. [2018-09-14 17:44:31,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:44:31,268 INFO L93 Difference]: Finished difference Result 117461 states and 152897 transitions. [2018-09-14 17:44:31,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-14 17:44:31,269 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 590 [2018-09-14 17:44:31,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:44:31,516 INFO L225 Difference]: With dead ends: 117461 [2018-09-14 17:44:31,516 INFO L226 Difference]: Without dead ends: 61404 [2018-09-14 17:44:31,811 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2378 GetRequests, 2356 SyntacticMatches, 6 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2018-09-14 17:44:31,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61404 states. [2018-09-14 17:44:32,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61404 to 60973. [2018-09-14 17:44:32,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60973 states. [2018-09-14 17:44:33,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60973 states to 60973 states and 76225 transitions. [2018-09-14 17:44:33,075 INFO L78 Accepts]: Start accepts. Automaton has 60973 states and 76225 transitions. Word has length 590 [2018-09-14 17:44:33,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:44:33,077 INFO L480 AbstractCegarLoop]: Abstraction has 60973 states and 76225 transitions. [2018-09-14 17:44:33,077 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 17:44:33,077 INFO L276 IsEmpty]: Start isEmpty. Operand 60973 states and 76225 transitions. [2018-09-14 17:44:33,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 601 [2018-09-14 17:44:33,636 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:44:33,637 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 17:44:33,637 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:44:33,638 INFO L82 PathProgramCache]: Analyzing trace with hash 635381908, now seen corresponding path program 1 times [2018-09-14 17:44:33,638 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:44:33,639 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:44:33,639 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:44:33,639 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:44:33,639 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:44:33,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:44:34,217 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 487 proven. 2 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2018-09-14 17:44:34,218 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:44:34,218 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:44:34,226 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:44:34,226 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:44:34,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:44:34,388 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:44:34,783 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 487 proven. 2 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2018-09-14 17:44:34,784 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:44:35,049 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 487 proven. 2 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2018-09-14 17:44:35,070 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:44:35,071 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 12 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 12 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:44:35,087 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:44:35,088 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:44:35,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:44:35,481 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:44:35,845 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 487 proven. 2 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2018-09-14 17:44:35,846 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:44:36,447 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 487 proven. 2 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2018-09-14 17:44:36,449 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:44:36,451 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-14 17:44:36,451 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:44:36,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 17:44:36,453 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 17:44:36,453 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-14 17:44:36,453 INFO L87 Difference]: Start difference. First operand 60973 states and 76225 transitions. Second operand 9 states. [2018-09-14 17:44:47,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:44:47,328 INFO L93 Difference]: Finished difference Result 122911 states and 151362 transitions. [2018-09-14 17:44:47,328 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-14 17:44:47,329 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 600 [2018-09-14 17:44:47,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:44:47,506 INFO L225 Difference]: With dead ends: 122911 [2018-09-14 17:44:47,506 INFO L226 Difference]: Without dead ends: 61944 [2018-09-14 17:44:47,697 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2420 GetRequests, 2397 SyntacticMatches, 6 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2018-09-14 17:44:47,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61944 states. [2018-09-14 17:44:48,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61944 to 61185. [2018-09-14 17:44:48,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61185 states. [2018-09-14 17:44:48,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61185 states to 61185 states and 67970 transitions. [2018-09-14 17:44:48,925 INFO L78 Accepts]: Start accepts. Automaton has 61185 states and 67970 transitions. Word has length 600 [2018-09-14 17:44:48,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:44:48,926 INFO L480 AbstractCegarLoop]: Abstraction has 61185 states and 67970 transitions. [2018-09-14 17:44:48,926 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 17:44:48,926 INFO L276 IsEmpty]: Start isEmpty. Operand 61185 states and 67970 transitions. [2018-09-14 17:44:48,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 603 [2018-09-14 17:44:48,962 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:44:48,962 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-09-14 17:44:48,962 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:44:48,963 INFO L82 PathProgramCache]: Analyzing trace with hash -376474654, now seen corresponding path program 1 times [2018-09-14 17:44:48,963 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:44:48,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:44:48,964 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:44:48,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:44:48,964 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:44:49,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:44:49,455 INFO L134 CoverageAnalysis]: Checked inductivity of 810 backedges. 393 proven. 100 refuted. 0 times theorem prover too weak. 317 trivial. 0 not checked. [2018-09-14 17:44:49,456 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:44:49,456 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 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:44:49,464 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:44:49,464 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:44:49,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:44:49,627 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:44:50,071 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 8 [2018-09-14 17:44:50,211 INFO L134 CoverageAnalysis]: Checked inductivity of 810 backedges. 654 proven. 2 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2018-09-14 17:44:50,211 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:44:50,758 INFO L134 CoverageAnalysis]: Checked inductivity of 810 backedges. 393 proven. 100 refuted. 0 times theorem prover too weak. 317 trivial. 0 not checked. [2018-09-14 17:44:50,779 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:44:50,779 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 14 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 14 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:44:50,795 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:44:50,796 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:44:51,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:44:51,166 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:44:51,757 INFO L134 CoverageAnalysis]: Checked inductivity of 810 backedges. 654 proven. 2 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2018-09-14 17:44:51,757 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:44:52,155 INFO L134 CoverageAnalysis]: Checked inductivity of 810 backedges. 393 proven. 100 refuted. 0 times theorem prover too weak. 317 trivial. 0 not checked. [2018-09-14 17:44:52,157 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:44:52,158 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6, 6, 6] total 12 [2018-09-14 17:44:52,158 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:44:52,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 17:44:52,159 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 17:44:52,159 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2018-09-14 17:44:52,160 INFO L87 Difference]: Start difference. First operand 61185 states and 67970 transitions. Second operand 9 states. [2018-09-14 17:45:12,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:45:12,200 INFO L93 Difference]: Finished difference Result 158511 states and 195327 transitions. [2018-09-14 17:45:12,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-14 17:45:12,200 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 602 [2018-09-14 17:45:12,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:45:12,632 INFO L225 Difference]: With dead ends: 158511 [2018-09-14 17:45:12,633 INFO L226 Difference]: Without dead ends: 98590 [2018-09-14 17:45:12,847 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2427 GetRequests, 2406 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2018-09-14 17:45:12,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98590 states. [2018-09-14 17:45:14,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98590 to 98331. [2018-09-14 17:45:14,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98331 states. [2018-09-14 17:45:14,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98331 states to 98331 states and 119213 transitions. [2018-09-14 17:45:14,570 INFO L78 Accepts]: Start accepts. Automaton has 98331 states and 119213 transitions. Word has length 602 [2018-09-14 17:45:14,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:45:14,571 INFO L480 AbstractCegarLoop]: Abstraction has 98331 states and 119213 transitions. [2018-09-14 17:45:14,571 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 17:45:14,571 INFO L276 IsEmpty]: Start isEmpty. Operand 98331 states and 119213 transitions. [2018-09-14 17:45:14,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 642 [2018-09-14 17:45:14,633 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:45:14,634 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-09-14 17:45:14,634 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:45:14,635 INFO L82 PathProgramCache]: Analyzing trace with hash -669482009, now seen corresponding path program 1 times [2018-09-14 17:45:14,635 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:45:14,636 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:45:14,636 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:45:14,636 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:45:14,636 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:45:14,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:45:15,385 WARN L178 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 12 [2018-09-14 17:45:16,217 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 124 proven. 387 refuted. 0 times theorem prover too weak. 329 trivial. 0 not checked. [2018-09-14 17:45:16,217 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:45:16,217 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 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:45:16,224 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:45:16,224 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:45:16,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:45:16,407 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:45:16,893 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 430 proven. 0 refuted. 0 times theorem prover too weak. 410 trivial. 0 not checked. [2018-09-14 17:45:16,893 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:45:18,397 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 124 proven. 387 refuted. 0 times theorem prover too weak. 329 trivial. 0 not checked. [2018-09-14 17:45:18,418 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:45:18,419 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-09-14 17:45:18,419 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:45:18,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:45:18,420 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:45:18,420 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-09-14 17:45:18,420 INFO L87 Difference]: Start difference. First operand 98331 states and 119213 transitions. Second operand 5 states. [2018-09-14 17:45:33,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:45:33,896 INFO L93 Difference]: Finished difference Result 198248 states and 241185 transitions. [2018-09-14 17:45:33,896 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:45:33,896 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 641 [2018-09-14 17:45:33,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:45:34,305 INFO L225 Difference]: With dead ends: 198248 [2018-09-14 17:45:34,306 INFO L226 Difference]: Without dead ends: 99958 [2018-09-14 17:45:34,676 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1290 GetRequests, 1276 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2018-09-14 17:45:34,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99958 states. [2018-09-14 17:45:36,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99958 to 99920. [2018-09-14 17:45:36,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99920 states. [2018-09-14 17:45:36,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99920 states to 99920 states and 121869 transitions. [2018-09-14 17:45:36,879 INFO L78 Accepts]: Start accepts. Automaton has 99920 states and 121869 transitions. Word has length 641 [2018-09-14 17:45:36,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:45:36,879 INFO L480 AbstractCegarLoop]: Abstraction has 99920 states and 121869 transitions. [2018-09-14 17:45:36,879 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:45:36,879 INFO L276 IsEmpty]: Start isEmpty. Operand 99920 states and 121869 transitions. [2018-09-14 17:45:36,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 716 [2018-09-14 17:45:36,930 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:45:36,931 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:45:36,931 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:45:36,931 INFO L82 PathProgramCache]: Analyzing trace with hash 324969630, now seen corresponding path program 1 times [2018-09-14 17:45:36,931 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:45:36,932 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:45:36,932 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:45:36,932 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:45:36,933 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:45:36,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:45:37,544 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 301 proven. 229 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2018-09-14 17:45:37,545 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:45:37,545 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 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:45:37,553 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:45:37,553 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:45:37,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:45:37,749 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:45:38,383 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 693 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2018-09-14 17:45:38,383 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:45:38,758 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 301 proven. 229 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2018-09-14 17:45:38,780 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:45:38,780 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 17 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 17 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:45:38,796 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:45:38,796 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:45:39,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:45:39,250 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:45:39,443 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 693 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2018-09-14 17:45:39,443 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:45:40,096 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 301 proven. 229 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2018-09-14 17:45:40,098 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:45:40,099 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-14 17:45:40,100 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:45:40,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 17:45:40,102 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 17:45:40,103 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-14 17:45:40,103 INFO L87 Difference]: Start difference. First operand 99920 states and 121869 transitions. Second operand 9 states. [2018-09-14 17:45:52,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:45:52,331 INFO L93 Difference]: Finished difference Result 197436 states and 245557 transitions. [2018-09-14 17:45:52,331 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-09-14 17:45:52,332 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 715 [2018-09-14 17:45:52,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:45:52,828 INFO L225 Difference]: With dead ends: 197436 [2018-09-14 17:45:52,828 INFO L226 Difference]: Without dead ends: 99028 [2018-09-14 17:45:53,832 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2890 GetRequests, 2862 SyntacticMatches, 6 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=172, Invalid=380, Unknown=0, NotChecked=0, Total=552 [2018-09-14 17:45:53,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99028 states. [2018-09-14 17:45:55,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99028 to 98110. [2018-09-14 17:45:55,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98110 states. [2018-09-14 17:45:55,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98110 states to 98110 states and 116927 transitions. [2018-09-14 17:45:55,738 INFO L78 Accepts]: Start accepts. Automaton has 98110 states and 116927 transitions. Word has length 715 [2018-09-14 17:45:55,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:45:55,739 INFO L480 AbstractCegarLoop]: Abstraction has 98110 states and 116927 transitions. [2018-09-14 17:45:55,739 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 17:45:55,739 INFO L276 IsEmpty]: Start isEmpty. Operand 98110 states and 116927 transitions. [2018-09-14 17:45:55,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 728 [2018-09-14 17:45:55,784 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:45:55,785 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:45:55,785 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:45:55,785 INFO L82 PathProgramCache]: Analyzing trace with hash -1441058242, now seen corresponding path program 1 times [2018-09-14 17:45:55,786 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:45:55,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:45:55,786 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:45:55,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:45:55,787 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:45:55,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:45:57,253 INFO L134 CoverageAnalysis]: Checked inductivity of 887 backedges. 540 proven. 2 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2018-09-14 17:45:57,255 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:45:57,255 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 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:45:57,265 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:45:57,265 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:45:57,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:45:57,461 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:45:57,778 INFO L134 CoverageAnalysis]: Checked inductivity of 887 backedges. 540 proven. 2 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2018-09-14 17:45:57,778 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:45:58,270 INFO L134 CoverageAnalysis]: Checked inductivity of 887 backedges. 540 proven. 2 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2018-09-14 17:45:58,291 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:45:58,292 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 19 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 19 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:45:58,310 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:45:58,310 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:45:58,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:45:58,771 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:45:59,261 INFO L134 CoverageAnalysis]: Checked inductivity of 887 backedges. 540 proven. 2 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2018-09-14 17:45:59,261 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:45:59,765 INFO L134 CoverageAnalysis]: Checked inductivity of 887 backedges. 540 proven. 2 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2018-09-14 17:45:59,767 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:45:59,768 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6] total 10 [2018-09-14 17:45:59,768 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:45:59,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-14 17:45:59,769 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-14 17:45:59,769 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2018-09-14 17:45:59,770 INFO L87 Difference]: Start difference. First operand 98110 states and 116927 transitions. Second operand 7 states. [2018-09-14 17:46:12,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:46:12,430 INFO L93 Difference]: Finished difference Result 210702 states and 251254 transitions. [2018-09-14 17:46:12,430 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-14 17:46:12,430 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 727 [2018-09-14 17:46:12,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:46:12,833 INFO L225 Difference]: With dead ends: 210702 [2018-09-14 17:46:12,833 INFO L226 Difference]: Without dead ends: 112906 [2018-09-14 17:46:13,123 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2926 GetRequests, 2907 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2018-09-14 17:46:13,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112906 states. [2018-09-14 17:46:14,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112906 to 112321. [2018-09-14 17:46:14,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112321 states. [2018-09-14 17:46:15,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112321 states to 112321 states and 133049 transitions. [2018-09-14 17:46:15,260 INFO L78 Accepts]: Start accepts. Automaton has 112321 states and 133049 transitions. Word has length 727 [2018-09-14 17:46:15,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:46:15,261 INFO L480 AbstractCegarLoop]: Abstraction has 112321 states and 133049 transitions. [2018-09-14 17:46:15,261 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-14 17:46:15,261 INFO L276 IsEmpty]: Start isEmpty. Operand 112321 states and 133049 transitions. [2018-09-14 17:46:15,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 738 [2018-09-14 17:46:15,314 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:46:15,315 INFO L376 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:46:15,315 INFO L423 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:46:15,315 INFO L82 PathProgramCache]: Analyzing trace with hash 567936894, now seen corresponding path program 1 times [2018-09-14 17:46:15,315 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:46:15,316 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:46:15,316 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:46:15,316 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:46:15,316 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:46:15,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-09-14 17:46:16,805 WARN L186 SmtUtils]: Removed 7 from assertion stack [2018-09-14 17:46:16,806 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-14 17:46:16,810 WARN L206 ceAbstractionStarter]: Timeout [2018-09-14 17:46:16,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 05:46:16 BoogieIcfgContainer [2018-09-14 17:46:16,811 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-14 17:46:16,811 INFO L168 Benchmark]: Toolchain (without parser) took 230926.48 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -932.1 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-09-14 17:46:16,813 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-14 17:46:16,813 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1344.74 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 126.8 MB). Peak memory consumption was 126.8 MB. Max. memory is 7.1 GB. [2018-09-14 17:46:16,814 INFO L168 Benchmark]: Boogie Procedure Inliner took 301.50 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.2 GB in the end (delta: 42.5 MB). Peak memory consumption was 42.5 MB. Max. memory is 7.1 GB. [2018-09-14 17:46:16,814 INFO L168 Benchmark]: Boogie Preprocessor took 675.31 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 891.8 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 89.5 MB. Max. memory is 7.1 GB. [2018-09-14 17:46:16,815 INFO L168 Benchmark]: RCFGBuilder took 7649.36 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 294.0 MB). Peak memory consumption was 294.0 MB. Max. memory is 7.1 GB. [2018-09-14 17:46:16,816 INFO L168 Benchmark]: TraceAbstraction took 220948.73 ms. Allocated memory was 2.4 GB in the beginning and 3.9 GB in the end (delta: 1.5 GB). Free memory was 2.0 GB in the beginning and 2.3 GB in the end (delta: -313.5 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-09-14 17:46:16,821 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 1344.74 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 126.8 MB). Peak memory consumption was 126.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 301.50 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.2 GB in the end (delta: 42.5 MB). Peak memory consumption was 42.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 675.31 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 891.8 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 89.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7649.36 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 294.0 MB). Peak memory consumption was 294.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 220948.73 ms. Allocated memory was 2.4 GB in the beginning and 3.9 GB in the end (delta: 1.5 GB). Free memory was 2.0 GB in the beginning and 2.3 GB in the end (delta: -313.5 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 100]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 100). Cancelled while BasicCegarLoop was analyzing trace of length 738 with TraceHistMax 6, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 25. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 220.8s OverallTime, 14 OverallIterations, 6 TraceHistogramMax, 170.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3138 SDtfs, 25290 SDslu, 5085 SDs, 0 SdLazy, 55377 SolverSat, 9681 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 133.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20452 GetRequests, 20204 SyntacticMatches, 44 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1810 ImplicationChecksByTransitivity, 8.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=112321occurred in iteration=13, 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: 15.5s AutomataMinimizationTime, 13 MinimizatonAttempts, 6662 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.6s SsaConstructionTime, 4.8s SatisfiabilityAnalysisTime, 22.5s InterpolantComputationTime, 16372 NumberOfCodeBlocks, 16372 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 26413 ConstructedInterpolants, 0 QuantifiedInterpolants, 38444126 SizeOfPredicates, 11 NumberOfNonLiveVariables, 14508 ConjunctsInSsa, 111 ConjunctsInUnsatCore, 49 InterpolantComputations, 5 PerfectInterpolantSequences, 29247/31554 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/Problem15_label04_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-14_17-46-16-834.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem15_label04_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-14_17-46-16-834.csv Completed graceful shutdown