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_label01_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-18 11:52:07,974 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-18 11:52:07,980 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-18 11:52:07,996 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-18 11:52:07,996 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-18 11:52:07,998 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-18 11:52:07,999 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-18 11:52:08,001 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-18 11:52:08,003 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-18 11:52:08,003 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-18 11:52:08,004 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-18 11:52:08,005 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-18 11:52:08,006 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-18 11:52:08,007 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-18 11:52:08,008 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-18 11:52:08,009 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-18 11:52:08,009 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-18 11:52:08,012 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-18 11:52:08,014 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-18 11:52:08,015 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-18 11:52:08,016 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-18 11:52:08,018 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-18 11:52:08,020 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-18 11:52:08,020 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-18 11:52:08,021 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-18 11:52:08,022 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-18 11:52:08,023 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-18 11:52:08,024 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-18 11:52:08,025 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-18 11:52:08,026 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-18 11:52:08,026 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-18 11:52:08,027 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-18 11:52:08,027 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-18 11:52:08,027 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-18 11:52:08,028 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-18 11:52:08,029 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-18 11:52:08,029 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-18 11:52:08,060 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-18 11:52:08,061 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-18 11:52:08,062 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-18 11:52:08,062 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-18 11:52:08,062 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-18 11:52:08,062 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-18 11:52:08,063 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-18 11:52:08,063 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-18 11:52:08,063 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-18 11:52:08,063 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-18 11:52:08,064 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-18 11:52:08,064 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-18 11:52:08,065 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-18 11:52:08,066 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-18 11:52:08,066 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-18 11:52:08,066 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-18 11:52:08,066 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-18 11:52:08,066 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-18 11:52:08,067 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-18 11:52:08,067 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-18 11:52:08,067 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-18 11:52:08,069 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-18 11:52:08,069 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-18 11:52:08,069 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-18 11:52:08,070 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 11:52:08,070 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-18 11:52:08,070 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-18 11:52:08,070 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-18 11:52:08,070 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-18 11:52:08,071 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-18 11:52:08,071 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-18 11:52:08,071 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-18 11:52:08,071 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-18 11:52:08,071 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-18 11:52:08,148 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-18 11:52:08,163 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-18 11:52:08,170 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-18 11:52:08,172 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-18 11:52:08,172 INFO L276 PluginConnector]: CDTParser initialized [2018-09-18 11:52:08,173 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label01_true-unreach-call.c [2018-09-18 11:52:08,562 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2c5415a0/d03a8dfb685d4568bcd452a6c5134e72/FLAG08ae09abb [2018-09-18 11:52:08,966 INFO L277 CDTParser]: Found 1 translation units. [2018-09-18 11:52:08,967 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label01_true-unreach-call.c [2018-09-18 11:52:08,995 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2c5415a0/d03a8dfb685d4568bcd452a6c5134e72/FLAG08ae09abb [2018-09-18 11:52:09,011 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2c5415a0/d03a8dfb685d4568bcd452a6c5134e72 [2018-09-18 11:52:09,023 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-18 11:52:09,027 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-18 11:52:09,028 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-18 11:52:09,028 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-18 11:52:09,035 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-18 11:52:09,036 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 11:52:09" (1/1) ... [2018-09-18 11:52:09,040 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e2a0e6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:52:09, skipping insertion in model container [2018-09-18 11:52:09,041 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 11:52:09" (1/1) ... [2018-09-18 11:52:09,054 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-18 11:52:09,834 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 11:52:09,859 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-18 11:52:10,112 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 11:52:10,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:52:10 WrapperNode [2018-09-18 11:52:10,257 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-18 11:52:10,259 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-18 11:52:10,259 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-18 11:52:10,259 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-18 11:52:10,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:52:10" (1/1) ... [2018-09-18 11:52:10,336 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:52:10" (1/1) ... [2018-09-18 11:52:10,513 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-18 11:52:10,514 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-18 11:52:10,514 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-18 11:52:10,514 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-18 11:52:10,935 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:52:10" (1/1) ... [2018-09-18 11:52:10,935 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:52:10" (1/1) ... [2018-09-18 11:52:10,956 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:52:10" (1/1) ... [2018-09-18 11:52:10,957 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:52:10" (1/1) ... [2018-09-18 11:52:11,050 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:52:10" (1/1) ... [2018-09-18 11:52:11,085 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:52:10" (1/1) ... [2018-09-18 11:52:11,133 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:52:10" (1/1) ... [2018-09-18 11:52:11,158 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-18 11:52:11,159 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-18 11:52:11,159 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-18 11:52:11,159 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-18 11:52:11,160 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:52:10" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 11:52:11,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-18 11:52:11,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-18 11:52:11,233 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-18 11:52:11,233 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-18 11:52:11,233 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-18 11:52:11,234 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-18 11:52:11,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-18 11:52:11,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-18 11:52:11,234 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-18 11:52:11,234 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-18 11:52:17,541 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-18 11:52:17,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 11:52:17 BoogieIcfgContainer [2018-09-18 11:52:17,542 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-18 11:52:17,542 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-18 11:52:17,543 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-18 11:52:17,546 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-18 11:52:17,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 11:52:09" (1/3) ... [2018-09-18 11:52:17,547 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fe9e195 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 11:52:17, skipping insertion in model container [2018-09-18 11:52:17,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:52:10" (2/3) ... [2018-09-18 11:52:17,548 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fe9e195 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 11:52:17, skipping insertion in model container [2018-09-18 11:52:17,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 11:52:17" (3/3) ... [2018-09-18 11:52:17,550 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label01_true-unreach-call.c [2018-09-18 11:52:17,560 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-18 11:52:17,569 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-18 11:52:17,629 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-18 11:52:17,630 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-18 11:52:17,630 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-18 11:52:17,630 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-18 11:52:17,630 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-18 11:52:17,631 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-18 11:52:17,631 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-18 11:52:17,631 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-18 11:52:17,631 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-18 11:52:17,663 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-09-18 11:52:17,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-09-18 11:52:17,672 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:52:17,673 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:52:17,675 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:52:17,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1009438167, now seen corresponding path program 1 times [2018-09-18 11:52:17,685 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:52:17,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:52:17,740 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:52:17,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:52:17,741 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:52:17,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:52:18,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:52:18,226 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:52:18,227 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-18 11:52:18,227 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:52:18,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-18 11:52:18,249 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-18 11:52:18,250 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 11:52:18,253 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-09-18 11:52:27,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:52:27,791 INFO L93 Difference]: Finished difference Result 1550 states and 2835 transitions. [2018-09-18 11:52:27,791 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-18 11:52:27,793 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2018-09-18 11:52:27,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:52:27,820 INFO L225 Difference]: With dead ends: 1550 [2018-09-18 11:52:27,820 INFO L226 Difference]: Without dead ends: 1106 [2018-09-18 11:52:27,832 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 11:52:27,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2018-09-18 11:52:27,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 762. [2018-09-18 11:52:27,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 762 states. [2018-09-18 11:52:27,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1263 transitions. [2018-09-18 11:52:27,989 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1263 transitions. Word has length 51 [2018-09-18 11:52:27,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:52:27,989 INFO L480 AbstractCegarLoop]: Abstraction has 762 states and 1263 transitions. [2018-09-18 11:52:27,990 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-18 11:52:27,990 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1263 transitions. [2018-09-18 11:52:28,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-09-18 11:52:28,001 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:52:28,001 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:52:28,001 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:52:28,002 INFO L82 PathProgramCache]: Analyzing trace with hash 1206177332, now seen corresponding path program 1 times [2018-09-18 11:52:28,002 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:52:28,006 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:52:28,007 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:52:28,007 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:52:28,007 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:52:28,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:52:28,276 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:52:28,277 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:52:28,277 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-18 11:52:28,277 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:52:28,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:52:28,279 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:52:28,280 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-18 11:52:28,280 INFO L87 Difference]: Start difference. First operand 762 states and 1263 transitions. Second operand 5 states. [2018-09-18 11:52:34,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:52:34,345 INFO L93 Difference]: Finished difference Result 2245 states and 3758 transitions. [2018-09-18 11:52:34,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-18 11:52:34,347 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2018-09-18 11:52:34,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:52:34,360 INFO L225 Difference]: With dead ends: 2245 [2018-09-18 11:52:34,360 INFO L226 Difference]: Without dead ends: 1489 [2018-09-18 11:52:34,364 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-18 11:52:34,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1489 states. [2018-09-18 11:52:34,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1489 to 1457. [2018-09-18 11:52:34,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1457 states. [2018-09-18 11:52:34,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1457 states to 1457 states and 2152 transitions. [2018-09-18 11:52:34,438 INFO L78 Accepts]: Start accepts. Automaton has 1457 states and 2152 transitions. Word has length 124 [2018-09-18 11:52:34,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:52:34,439 INFO L480 AbstractCegarLoop]: Abstraction has 1457 states and 2152 transitions. [2018-09-18 11:52:34,439 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 11:52:34,439 INFO L276 IsEmpty]: Start isEmpty. Operand 1457 states and 2152 transitions. [2018-09-18 11:52:34,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-09-18 11:52:34,448 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:52:34,448 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:52:34,448 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:52:34,448 INFO L82 PathProgramCache]: Analyzing trace with hash 1698433604, now seen corresponding path program 1 times [2018-09-18 11:52:34,449 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:52:34,453 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:52:34,453 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:52:34,453 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:52:34,453 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:52:34,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:52:34,687 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:52:34,687 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:52:34,687 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-18 11:52:34,687 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:52:34,688 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-18 11:52:34,688 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-18 11:52:34,688 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 11:52:34,689 INFO L87 Difference]: Start difference. First operand 1457 states and 2152 transitions. Second operand 4 states. [2018-09-18 11:52:42,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:52:42,933 INFO L93 Difference]: Finished difference Result 5392 states and 8275 transitions. [2018-09-18 11:52:42,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-18 11:52:42,934 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 132 [2018-09-18 11:52:42,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:52:42,958 INFO L225 Difference]: With dead ends: 5392 [2018-09-18 11:52:42,959 INFO L226 Difference]: Without dead ends: 3941 [2018-09-18 11:52:42,972 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 [2018-09-18 11:52:42,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3941 states. [2018-09-18 11:52:43,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3941 to 3939. [2018-09-18 11:52:43,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3939 states. [2018-09-18 11:52:43,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3939 states to 3939 states and 5427 transitions. [2018-09-18 11:52:43,103 INFO L78 Accepts]: Start accepts. Automaton has 3939 states and 5427 transitions. Word has length 132 [2018-09-18 11:52:43,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:52:43,104 INFO L480 AbstractCegarLoop]: Abstraction has 3939 states and 5427 transitions. [2018-09-18 11:52:43,104 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-18 11:52:43,104 INFO L276 IsEmpty]: Start isEmpty. Operand 3939 states and 5427 transitions. [2018-09-18 11:52:43,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-09-18 11:52:43,114 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:52:43,115 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2018-09-18 11:52:43,115 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:52:43,115 INFO L82 PathProgramCache]: Analyzing trace with hash 782695778, now seen corresponding path program 1 times [2018-09-18 11:52:43,116 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:52:43,120 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:52:43,120 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:52:43,120 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:52:43,121 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:52:43,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:52:43,484 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 88 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 11:52:43,484 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:52:43,485 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:52:43,494 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:52:43,494 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:52:43,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:52:43,610 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:52:44,062 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-09-18 11:52:44,062 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:52:44,276 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-09-18 11:52:44,382 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-09-18 11:52:44,933 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 88 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 11:52:44,955 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 11:52:44,956 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-09-18 11:52:44,956 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:52:44,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:52:44,957 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:52:44,957 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-18 11:52:44,958 INFO L87 Difference]: Start difference. First operand 3939 states and 5427 transitions. Second operand 5 states. [2018-09-18 11:52:52,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:52:52,737 INFO L93 Difference]: Finished difference Result 10280 states and 14040 transitions. [2018-09-18 11:52:52,738 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-18 11:52:52,739 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 208 [2018-09-18 11:52:52,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:52:52,773 INFO L225 Difference]: With dead ends: 10280 [2018-09-18 11:52:52,774 INFO L226 Difference]: Without dead ends: 6347 [2018-09-18 11:52:52,801 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 425 GetRequests, 411 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-09-18 11:52:52,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6347 states. [2018-09-18 11:52:53,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6347 to 6291. [2018-09-18 11:52:53,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6291 states. [2018-09-18 11:52:53,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6291 states to 6291 states and 7957 transitions. [2018-09-18 11:52:53,080 INFO L78 Accepts]: Start accepts. Automaton has 6291 states and 7957 transitions. Word has length 208 [2018-09-18 11:52:53,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:52:53,080 INFO L480 AbstractCegarLoop]: Abstraction has 6291 states and 7957 transitions. [2018-09-18 11:52:53,081 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 11:52:53,081 INFO L276 IsEmpty]: Start isEmpty. Operand 6291 states and 7957 transitions. [2018-09-18 11:52:53,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2018-09-18 11:52:53,090 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:52:53,090 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:52:53,091 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:52:53,091 INFO L82 PathProgramCache]: Analyzing trace with hash -1314998265, now seen corresponding path program 1 times [2018-09-18 11:52:53,091 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:52:53,092 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:52:53,093 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:52:53,093 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:52:53,093 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:52:53,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:52:53,854 WARN L178 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 12 [2018-09-18 11:52:54,142 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 88 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 11:52:54,142 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:52:54,143 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:52:54,150 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:52:54,150 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:52:54,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:52:54,245 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:52:55,141 WARN L178 SmtUtils]: Spent 465.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 15 [2018-09-18 11:52:55,263 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-09-18 11:52:55,264 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:52:55,396 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 15 [2018-09-18 11:52:56,618 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 88 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 11:52:56,640 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 11:52:56,640 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-09-18 11:52:56,640 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:52:56,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:52:56,641 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:52:56,641 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-09-18 11:52:56,642 INFO L87 Difference]: Start difference. First operand 6291 states and 7957 transitions. Second operand 5 states. [2018-09-18 11:53:09,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:53:09,448 INFO L93 Difference]: Finished difference Result 16355 states and 20980 transitions. [2018-09-18 11:53:09,449 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 11:53:09,449 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 322 [2018-09-18 11:53:09,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:53:09,495 INFO L225 Difference]: With dead ends: 16355 [2018-09-18 11:53:09,495 INFO L226 Difference]: Without dead ends: 10070 [2018-09-18 11:53:09,521 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 652 GetRequests, 638 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2018-09-18 11:53:09,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10070 states. [2018-09-18 11:53:09,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10070 to 9720. [2018-09-18 11:53:09,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9720 states. [2018-09-18 11:53:09,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9720 states to 9720 states and 12409 transitions. [2018-09-18 11:53:09,715 INFO L78 Accepts]: Start accepts. Automaton has 9720 states and 12409 transitions. Word has length 322 [2018-09-18 11:53:09,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:53:09,716 INFO L480 AbstractCegarLoop]: Abstraction has 9720 states and 12409 transitions. [2018-09-18 11:53:09,716 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 11:53:09,716 INFO L276 IsEmpty]: Start isEmpty. Operand 9720 states and 12409 transitions. [2018-09-18 11:53:09,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2018-09-18 11:53:09,727 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:53:09,728 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:53:09,728 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:53:09,728 INFO L82 PathProgramCache]: Analyzing trace with hash 1359324968, now seen corresponding path program 1 times [2018-09-18 11:53:09,728 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:53:09,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:53:09,729 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:53:09,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:53:09,730 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:53:09,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:53:10,640 WARN L178 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 19 [2018-09-18 11:53:10,846 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 5 [2018-09-18 11:53:10,992 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 0 proven. 95 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2018-09-18 11:53:10,993 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:53:10,993 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:53:11,002 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:53:11,002 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:53:11,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:53:11,140 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:53:11,465 WARN L178 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2018-09-18 11:53:11,807 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 37 [2018-09-18 11:53:12,164 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 0 proven. 95 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2018-09-18 11:53:12,164 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:53:12,575 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 33 [2018-09-18 11:53:14,771 WARN L178 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 143 DAG size of output: 40 [2018-09-18 11:53:16,441 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 93 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:53:16,461 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:53:16,462 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:53:16,478 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:53:16,478 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:53:16,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:53:16,758 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:53:17,137 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2018-09-18 11:53:17,638 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 0 proven. 95 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2018-09-18 11:53:17,638 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:53:20,047 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 93 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:53:20,050 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:53:20,050 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9, 9, 9] total 19 [2018-09-18 11:53:20,050 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:53:20,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-18 11:53:20,051 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-18 11:53:20,052 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2018-09-18 11:53:20,052 INFO L87 Difference]: Start difference. First operand 9720 states and 12409 transitions. Second operand 11 states. [2018-09-18 11:53:20,651 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2018-09-18 11:53:23,122 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 41 [2018-09-18 11:53:26,453 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 44 [2018-09-18 11:53:29,957 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 43 [2018-09-18 11:54:12,830 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2018-09-18 11:55:20,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:55:20,860 INFO L93 Difference]: Finished difference Result 34527 states and 45562 transitions. [2018-09-18 11:55:20,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-09-18 11:55:20,860 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 408 [2018-09-18 11:55:20,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:55:20,942 INFO L225 Difference]: With dead ends: 34527 [2018-09-18 11:55:20,942 INFO L226 Difference]: Without dead ends: 25124 [2018-09-18 11:55:20,978 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1660 GetRequests, 1614 SyntacticMatches, 11 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=321, Invalid=1011, Unknown=0, NotChecked=0, Total=1332 [2018-09-18 11:55:20,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25124 states. [2018-09-18 11:55:21,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25124 to 23783. [2018-09-18 11:55:21,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23783 states. [2018-09-18 11:55:21,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23783 states to 23783 states and 29922 transitions. [2018-09-18 11:55:21,484 INFO L78 Accepts]: Start accepts. Automaton has 23783 states and 29922 transitions. Word has length 408 [2018-09-18 11:55:21,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:55:21,485 INFO L480 AbstractCegarLoop]: Abstraction has 23783 states and 29922 transitions. [2018-09-18 11:55:21,485 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-18 11:55:21,485 INFO L276 IsEmpty]: Start isEmpty. Operand 23783 states and 29922 transitions. [2018-09-18 11:55:21,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2018-09-18 11:55:21,503 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:55:21,504 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:55:21,504 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:55:21,504 INFO L82 PathProgramCache]: Analyzing trace with hash -1307907983, now seen corresponding path program 1 times [2018-09-18 11:55:21,505 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:55:21,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:55:21,506 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:55:21,506 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:55:21,506 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:55:21,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:55:22,645 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 231 proven. 132 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 11:55:22,645 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:55:22,645 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:55:22,653 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:55:22,653 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:55:22,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:55:22,764 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:55:23,285 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 282 proven. 41 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-09-18 11:55:23,285 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:55:23,915 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 142 proven. 221 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 11:55:23,937 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:55:23,938 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:55:23,955 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:55:23,955 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:55:24,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:55:24,236 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:55:25,333 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 232 proven. 41 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2018-09-18 11:55:25,333 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:55:26,205 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 142 proven. 221 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 11:55:26,207 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:55:26,207 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9, 8, 9] total 23 [2018-09-18 11:55:26,208 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:55:26,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-18 11:55:26,209 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-18 11:55:26,209 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=389, Unknown=0, NotChecked=0, Total=506 [2018-09-18 11:55:26,209 INFO L87 Difference]: Start difference. First operand 23783 states and 29922 transitions. Second operand 13 states. [2018-09-18 11:55:51,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:55:51,485 INFO L93 Difference]: Finished difference Result 55385 states and 69620 transitions. [2018-09-18 11:55:51,485 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-09-18 11:55:51,485 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 418 [2018-09-18 11:55:51,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:55:51,765 INFO L225 Difference]: With dead ends: 55385 [2018-09-18 11:55:51,766 INFO L226 Difference]: Without dead ends: 36000 [2018-09-18 11:55:51,792 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1731 GetRequests, 1683 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 582 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=526, Invalid=1730, Unknown=0, NotChecked=0, Total=2256 [2018-09-18 11:55:51,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36000 states. [2018-09-18 11:55:52,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36000 to 32109. [2018-09-18 11:55:52,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32109 states. [2018-09-18 11:55:52,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32109 states to 32109 states and 40119 transitions. [2018-09-18 11:55:52,324 INFO L78 Accepts]: Start accepts. Automaton has 32109 states and 40119 transitions. Word has length 418 [2018-09-18 11:55:52,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:55:52,325 INFO L480 AbstractCegarLoop]: Abstraction has 32109 states and 40119 transitions. [2018-09-18 11:55:52,325 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-18 11:55:52,325 INFO L276 IsEmpty]: Start isEmpty. Operand 32109 states and 40119 transitions. [2018-09-18 11:55:52,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2018-09-18 11:55:52,352 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:55:52,352 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:55:52,353 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:55:52,353 INFO L82 PathProgramCache]: Analyzing trace with hash -159792433, now seen corresponding path program 1 times [2018-09-18 11:55:52,353 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:55:52,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:55:52,354 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:55:52,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:55:52,354 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:55:52,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:55:52,768 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 220 proven. 69 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2018-09-18 11:55:52,769 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:55:52,769 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 [2018-09-18 11:55:52,778 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:55:52,778 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:55:52,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:55:52,914 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:55:53,151 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 310 proven. 2 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-09-18 11:55:53,151 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:55:53,331 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 220 proven. 69 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2018-09-18 11:55:53,352 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:55:53,352 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:55:53,367 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:55:53,368 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:55:53,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:55:53,687 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:55:53,955 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 310 proven. 2 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-09-18 11:55:53,955 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:55:54,392 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 220 proven. 69 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2018-09-18 11:55:54,394 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:55:54,395 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-09-18 11:55:54,395 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:55:54,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 11:55:54,396 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 11:55:54,397 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-18 11:55:54,397 INFO L87 Difference]: Start difference. First operand 32109 states and 40119 transitions. Second operand 9 states. [2018-09-18 11:56:04,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:56:04,551 INFO L93 Difference]: Finished difference Result 72667 states and 100778 transitions. [2018-09-18 11:56:04,553 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-09-18 11:56:04,553 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 483 [2018-09-18 11:56:04,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:56:04,711 INFO L225 Difference]: With dead ends: 72667 [2018-09-18 11:56:04,712 INFO L226 Difference]: Without dead ends: 40877 [2018-09-18 11:56:04,828 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1964 GetRequests, 1935 SyntacticMatches, 5 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=204, Invalid=446, Unknown=0, NotChecked=0, Total=650 [2018-09-18 11:56:04,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40877 states. [2018-09-18 11:56:05,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40877 to 37872. [2018-09-18 11:56:05,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37872 states. [2018-09-18 11:56:05,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37872 states to 37872 states and 49442 transitions. [2018-09-18 11:56:05,675 INFO L78 Accepts]: Start accepts. Automaton has 37872 states and 49442 transitions. Word has length 483 [2018-09-18 11:56:05,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:56:05,676 INFO L480 AbstractCegarLoop]: Abstraction has 37872 states and 49442 transitions. [2018-09-18 11:56:05,676 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 11:56:05,676 INFO L276 IsEmpty]: Start isEmpty. Operand 37872 states and 49442 transitions. [2018-09-18 11:56:05,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 504 [2018-09-18 11:56:05,707 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:56:05,708 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 11:56:05,708 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:56:05,708 INFO L82 PathProgramCache]: Analyzing trace with hash 1386545772, now seen corresponding path program 1 times [2018-09-18 11:56:05,708 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:56:05,709 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:56:05,709 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:56:05,709 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:56:05,709 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:56:05,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:56:07,504 INFO L134 CoverageAnalysis]: Checked inductivity of 453 backedges. 316 proven. 132 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 11:56:07,505 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:56:07,505 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:56:07,516 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:56:07,517 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:56:07,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:56:07,661 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:56:08,291 INFO L134 CoverageAnalysis]: Checked inductivity of 453 backedges. 282 proven. 126 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-09-18 11:56:08,292 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:56:09,101 INFO L134 CoverageAnalysis]: Checked inductivity of 453 backedges. 142 proven. 306 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 11:56:09,122 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:56:09,122 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:56:09,140 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:56:09,140 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:56:09,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:56:09,668 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:56:10,218 INFO L134 CoverageAnalysis]: Checked inductivity of 453 backedges. 232 proven. 126 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2018-09-18 11:56:10,218 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:56:11,118 INFO L134 CoverageAnalysis]: Checked inductivity of 453 backedges. 142 proven. 306 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 11:56:11,120 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:56:11,121 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9, 8, 9] total 23 [2018-09-18 11:56:11,121 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:56:11,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-18 11:56:11,123 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-18 11:56:11,123 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=392, Unknown=0, NotChecked=0, Total=506 [2018-09-18 11:56:11,124 INFO L87 Difference]: Start difference. First operand 37872 states and 49442 transitions. Second operand 13 states. Received shutdown request... [2018-09-18 11:56:25,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-09-18 11:56:25,742 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-18 11:56:25,748 WARN L206 ceAbstractionStarter]: Timeout [2018-09-18 11:56:25,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 11:56:25 BoogieIcfgContainer [2018-09-18 11:56:25,748 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-18 11:56:25,749 INFO L168 Benchmark]: Toolchain (without parser) took 256725.57 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 3.5 GB in the end (delta: -2.0 GB). Peak memory consumption was 586.0 MB. Max. memory is 7.1 GB. [2018-09-18 11:56:25,750 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-18 11:56:25,750 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1229.94 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. [2018-09-18 11:56:25,751 INFO L168 Benchmark]: Boogie Procedure Inliner took 254.85 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-09-18 11:56:25,752 INFO L168 Benchmark]: Boogie Preprocessor took 644.63 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 901.8 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 89.6 MB. Max. memory is 7.1 GB. [2018-09-18 11:56:25,753 INFO L168 Benchmark]: RCFGBuilder took 6383.20 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: 310.4 MB). Peak memory consumption was 310.4 MB. Max. memory is 7.1 GB. [2018-09-18 11:56:25,754 INFO L168 Benchmark]: TraceAbstraction took 248205.93 ms. Allocated memory was 2.4 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.0 GB in the beginning and 3.5 GB in the end (delta: -1.4 GB). Peak memory consumption was 268.1 MB. Max. memory is 7.1 GB. [2018-09-18 11:56:25,758 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 1229.94 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 254.85 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 644.63 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 901.8 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 89.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6383.20 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: 310.4 MB). Peak memory consumption was 310.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 248205.93 ms. Allocated memory was 2.4 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.0 GB in the beginning and 3.5 GB in the end (delta: -1.4 GB). Peak memory consumption was 268.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 139]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 139). Cancelled while BasicCegarLoop was constructing difference of abstraction (37872states) and FLOYD_HOARE automaton (currently 26 states, 13 states before enhancement), while ReachableStatesComputation was computing reachable states (17224 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 248.1s OverallTime, 9 OverallIterations, 4 TraceHistogramMax, 216.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2159 SDtfs, 25522 SDslu, 3586 SDs, 0 SdLazy, 42684 SolverSat, 7647 SolverUnsat, 18 SolverUnknown, 0 SolverNotchecked, 199.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8512 GetRequests, 8305 SyntacticMatches, 28 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1597 ImplicationChecksByTransitivity, 13.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37872occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.7s AutomataMinimizationTime, 8 MinimizatonAttempts, 9021 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 2.3s SatisfiabilityAnalysisTime, 24.1s InterpolantComputationTime, 6803 NumberOfCodeBlocks, 6803 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 10928 ConstructedInterpolants, 7 QuantifiedInterpolants, 60023566 SizeOfPredicates, 44 NumberOfNonLiveVariables, 6155 ConjunctsInSsa, 159 ConjunctsInUnsatCore, 29 InterpolantComputations, 5 PerfectInterpolantSequences, 5178/7716 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_label01_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-18_11-56-25-772.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem15_label01_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-18_11-56-25-772.csv Completed graceful shutdown