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/loop-invgen/large_const_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-14 15:51:00,289 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-14 15:51:00,291 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-14 15:51:00,304 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-14 15:51:00,304 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-14 15:51:00,305 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-14 15:51:00,306 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-14 15:51:00,308 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-14 15:51:00,310 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-14 15:51:00,311 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-14 15:51:00,311 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-14 15:51:00,312 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-14 15:51:00,314 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-14 15:51:00,316 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-14 15:51:00,317 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-14 15:51:00,318 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-14 15:51:00,321 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-14 15:51:00,323 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-14 15:51:00,330 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-14 15:51:00,335 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-14 15:51:00,336 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-14 15:51:00,337 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-14 15:51:00,342 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-14 15:51:00,343 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-14 15:51:00,343 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-14 15:51:00,347 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-14 15:51:00,348 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-14 15:51:00,349 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-14 15:51:00,352 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-14 15:51:00,353 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-14 15:51:00,353 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-14 15:51:00,354 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-09-14 15:51:00,359 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 15:51:00,378 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-14 15:51:00,378 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-14 15:51:00,379 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-14 15:51:00,379 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-14 15:51:00,379 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-14 15:51:00,380 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-14 15:51:00,380 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-14 15:51:00,380 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-14 15:51:00,380 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-14 15:51:00,380 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-14 15:51:00,381 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-14 15:51:00,381 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-14 15:51:00,381 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-14 15:51:00,382 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-14 15:51:00,382 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-14 15:51:00,382 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-14 15:51:00,382 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-14 15:51:00,382 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-14 15:51:00,383 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-14 15:51:00,383 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-14 15:51:00,383 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-14 15:51:00,383 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-14 15:51:00,384 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-14 15:51:00,384 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 15:51:00,384 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-14 15:51:00,384 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-14 15:51:00,384 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-14 15:51:00,385 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-14 15:51:00,385 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-14 15:51:00,385 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-14 15:51:00,385 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-14 15:51:00,385 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-14 15:51:00,386 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-14 15:51:00,431 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-14 15:51:00,447 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-14 15:51:00,452 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-14 15:51:00,454 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-14 15:51:00,454 INFO L276 PluginConnector]: CDTParser initialized [2018-09-14 15:51:00,455 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/large_const_true-unreach-call_true-termination.i [2018-09-14 15:51:00,808 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ac4ec845/a10e022755744bcf9a4883f1c8bf5d92/FLAG8ca22b33e [2018-09-14 15:51:00,982 INFO L277 CDTParser]: Found 1 translation units. [2018-09-14 15:51:00,983 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/large_const_true-unreach-call_true-termination.i [2018-09-14 15:51:00,996 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ac4ec845/a10e022755744bcf9a4883f1c8bf5d92/FLAG8ca22b33e [2018-09-14 15:51:01,019 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ac4ec845/a10e022755744bcf9a4883f1c8bf5d92 [2018-09-14 15:51:01,033 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-14 15:51:01,038 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-14 15:51:01,039 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-14 15:51:01,039 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-14 15:51:01,046 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-14 15:51:01,047 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 03:51:01" (1/1) ... [2018-09-14 15:51:01,050 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39fbb17d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:51:01, skipping insertion in model container [2018-09-14 15:51:01,051 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 03:51:01" (1/1) ... [2018-09-14 15:51:01,063 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-14 15:51:01,251 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 15:51:01,271 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-14 15:51:01,280 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 15:51:01,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:51:01 WrapperNode [2018-09-14 15:51:01,298 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-14 15:51:01,299 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-14 15:51:01,299 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-14 15:51:01,299 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-14 15:51:01,308 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:51:01" (1/1) ... [2018-09-14 15:51:01,316 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:51:01" (1/1) ... [2018-09-14 15:51:01,322 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-14 15:51:01,323 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-14 15:51:01,323 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-14 15:51:01,323 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-14 15:51:01,331 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:51:01" (1/1) ... [2018-09-14 15:51:01,332 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:51:01" (1/1) ... [2018-09-14 15:51:01,333 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:51:01" (1/1) ... [2018-09-14 15:51:01,333 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:51:01" (1/1) ... [2018-09-14 15:51:01,335 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:51:01" (1/1) ... [2018-09-14 15:51:01,341 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:51:01" (1/1) ... [2018-09-14 15:51:01,342 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:51:01" (1/1) ... [2018-09-14 15:51:01,344 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-14 15:51:01,344 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-14 15:51:01,345 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-14 15:51:01,345 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-14 15:51:01,346 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:51:01" (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 15:51:01,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-14 15:51:01,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-14 15:51:01,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-14 15:51:01,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-14 15:51:01,406 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-14 15:51:01,406 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-14 15:51:01,406 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-09-14 15:51:01,406 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-09-14 15:51:01,975 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-14 15:51:01,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 03:51:01 BoogieIcfgContainer [2018-09-14 15:51:01,975 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-14 15:51:01,976 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-14 15:51:01,977 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-14 15:51:01,980 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-14 15:51:01,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 03:51:01" (1/3) ... [2018-09-14 15:51:01,981 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4abd4a19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 03:51:01, skipping insertion in model container [2018-09-14 15:51:01,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:51:01" (2/3) ... [2018-09-14 15:51:01,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4abd4a19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 03:51:01, skipping insertion in model container [2018-09-14 15:51:01,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 03:51:01" (3/3) ... [2018-09-14 15:51:01,984 INFO L112 eAbstractionObserver]: Analyzing ICFG large_const_true-unreach-call_true-termination.i [2018-09-14 15:51:01,994 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-14 15:51:02,003 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-14 15:51:02,053 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-14 15:51:02,054 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-14 15:51:02,054 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-14 15:51:02,054 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-14 15:51:02,055 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-14 15:51:02,055 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-14 15:51:02,055 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-14 15:51:02,055 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-14 15:51:02,055 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-14 15:51:02,072 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2018-09-14 15:51:02,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-09-14 15:51:02,078 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 15:51:02,079 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 15:51:02,080 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 15:51:02,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1169309281, now seen corresponding path program 1 times [2018-09-14 15:51:02,089 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 15:51:02,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:51:02,137 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 15:51:02,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:51:02,137 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 15:51:02,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:51:02,213 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 15:51:02,216 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 15:51:02,216 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-14 15:51:02,216 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 15:51:02,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-14 15:51:02,233 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-14 15:51:02,233 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-14 15:51:02,236 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 2 states. [2018-09-14 15:51:02,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 15:51:02,259 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2018-09-14 15:51:02,260 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-14 15:51:02,261 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2018-09-14 15:51:02,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 15:51:02,271 INFO L225 Difference]: With dead ends: 43 [2018-09-14 15:51:02,271 INFO L226 Difference]: Without dead ends: 22 [2018-09-14 15:51:02,274 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-14 15:51:02,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-09-14 15:51:02,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-09-14 15:51:02,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-09-14 15:51:02,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2018-09-14 15:51:02,313 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 14 [2018-09-14 15:51:02,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 15:51:02,314 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2018-09-14 15:51:02,314 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-14 15:51:02,314 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2018-09-14 15:51:02,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-09-14 15:51:02,315 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 15:51:02,315 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 15:51:02,315 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 15:51:02,316 INFO L82 PathProgramCache]: Analyzing trace with hash -659000362, now seen corresponding path program 1 times [2018-09-14 15:51:02,316 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 15:51:02,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:51:02,317 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 15:51:02,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:51:02,317 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 15:51:02,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:51:02,450 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 15:51:02,451 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 15:51:02,451 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-14 15:51:02,451 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 15:51:02,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 15:51:02,453 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 15:51:02,453 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-14 15:51:02,454 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 5 states. [2018-09-14 15:51:02,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 15:51:02,625 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2018-09-14 15:51:02,625 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-14 15:51:02,625 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2018-09-14 15:51:02,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 15:51:02,626 INFO L225 Difference]: With dead ends: 37 [2018-09-14 15:51:02,627 INFO L226 Difference]: Without dead ends: 24 [2018-09-14 15:51:02,628 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-09-14 15:51:02,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-09-14 15:51:02,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-09-14 15:51:02,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-09-14 15:51:02,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2018-09-14 15:51:02,634 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 15 [2018-09-14 15:51:02,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 15:51:02,635 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2018-09-14 15:51:02,635 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 15:51:02,635 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2018-09-14 15:51:02,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-09-14 15:51:02,636 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 15:51:02,636 INFO L376 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 15:51:02,636 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 15:51:02,636 INFO L82 PathProgramCache]: Analyzing trace with hash 701537581, now seen corresponding path program 1 times [2018-09-14 15:51:02,637 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 15:51:02,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:51:02,638 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 15:51:02,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:51:02,638 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 15:51:02,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:51:02,869 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:51:02,869 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:51:02,870 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 15:51:02,891 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 15:51:02,892 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 15:51:02,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:51:02,936 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:51:03,061 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:51:03,062 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:51:03,443 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:51:03,467 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:51:03,467 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 15:51:03,482 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 15:51:03,483 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 15:51:03,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:51:03,510 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:51:03,534 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:51:03,535 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:51:03,557 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (3)] Exception during sending of exit command (exit): Broken pipe [2018-09-14 15:51:03,560 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 15:51:03,560 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7] total 13 [2018-09-14 15:51:03,560 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 15:51:03,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-14 15:51:03,561 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-14 15:51:03,562 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2018-09-14 15:51:03,562 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand 8 states. [2018-09-14 15:51:03,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 15:51:03,911 INFO L93 Difference]: Finished difference Result 47 states and 56 transitions. [2018-09-14 15:51:03,911 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 15:51:03,912 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2018-09-14 15:51:03,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 15:51:03,914 INFO L225 Difference]: With dead ends: 47 [2018-09-14 15:51:03,914 INFO L226 Difference]: Without dead ends: 45 [2018-09-14 15:51:03,916 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 68 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2018-09-14 15:51:03,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-09-14 15:51:03,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 36. [2018-09-14 15:51:03,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-09-14 15:51:03,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2018-09-14 15:51:03,928 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 19 [2018-09-14 15:51:03,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 15:51:03,928 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2018-09-14 15:51:03,929 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-14 15:51:03,929 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2018-09-14 15:51:03,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-09-14 15:51:03,930 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 15:51:03,930 INFO L376 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 15:51:03,930 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 15:51:03,930 INFO L82 PathProgramCache]: Analyzing trace with hash -1708424439, now seen corresponding path program 1 times [2018-09-14 15:51:03,931 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 15:51:03,931 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:51:03,932 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 15:51:03,932 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:51:03,932 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 15:51:03,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:51:04,180 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:51:04,181 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:51:04,181 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 15:51:04,203 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 15:51:04,203 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 15:51:04,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:51:04,229 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:51:04,449 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:51:04,449 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:51:04,598 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:51:04,620 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:51:04,620 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 15:51:04,635 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 15:51:04,635 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 15:51:04,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:51:04,659 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:51:04,684 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:51:04,684 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:51:04,711 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:51:04,713 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 15:51:04,713 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7] total 13 [2018-09-14 15:51:04,713 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 15:51:04,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-14 15:51:04,714 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-14 15:51:04,714 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2018-09-14 15:51:04,715 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand 8 states. [2018-09-14 15:51:04,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 15:51:04,889 INFO L93 Difference]: Finished difference Result 59 states and 70 transitions. [2018-09-14 15:51:04,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 15:51:04,889 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2018-09-14 15:51:04,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 15:51:04,894 INFO L225 Difference]: With dead ends: 59 [2018-09-14 15:51:04,894 INFO L226 Difference]: Without dead ends: 57 [2018-09-14 15:51:04,895 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 72 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2018-09-14 15:51:04,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-09-14 15:51:04,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 43. [2018-09-14 15:51:04,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-09-14 15:51:04,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 52 transitions. [2018-09-14 15:51:04,903 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 52 transitions. Word has length 20 [2018-09-14 15:51:04,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 15:51:04,904 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 52 transitions. [2018-09-14 15:51:04,904 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-14 15:51:04,904 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 52 transitions. [2018-09-14 15:51:04,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-09-14 15:51:04,905 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 15:51:04,905 INFO L376 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 15:51:04,906 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 15:51:04,906 INFO L82 PathProgramCache]: Analyzing trace with hash -1315397429, now seen corresponding path program 1 times [2018-09-14 15:51:04,906 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 15:51:04,907 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:51:04,907 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 15:51:04,907 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:51:04,907 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 15:51:04,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:51:05,002 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:51:05,003 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:51:05,003 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 15:51:05,012 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 15:51:05,012 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 15:51:05,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:51:05,027 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:51:05,082 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:51:05,083 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:51:05,176 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:51:05,197 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:51:05,197 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 15:51:05,213 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 15:51:05,213 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 15:51:05,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:51:05,238 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:51:05,279 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:51:05,280 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:51:05,301 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:51:05,307 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 15:51:05,307 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7] total 13 [2018-09-14 15:51:05,307 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 15:51:05,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-14 15:51:05,308 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-14 15:51:05,308 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2018-09-14 15:51:05,308 INFO L87 Difference]: Start difference. First operand 43 states and 52 transitions. Second operand 8 states. [2018-09-14 15:51:05,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 15:51:05,489 INFO L93 Difference]: Finished difference Result 64 states and 78 transitions. [2018-09-14 15:51:05,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 15:51:05,496 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2018-09-14 15:51:05,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 15:51:05,497 INFO L225 Difference]: With dead ends: 64 [2018-09-14 15:51:05,497 INFO L226 Difference]: Without dead ends: 62 [2018-09-14 15:51:05,498 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 72 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2018-09-14 15:51:05,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-09-14 15:51:05,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 49. [2018-09-14 15:51:05,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-09-14 15:51:05,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 62 transitions. [2018-09-14 15:51:05,511 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 62 transitions. Word has length 20 [2018-09-14 15:51:05,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 15:51:05,513 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 62 transitions. [2018-09-14 15:51:05,513 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-14 15:51:05,513 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 62 transitions. [2018-09-14 15:51:05,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-09-14 15:51:05,514 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 15:51:05,514 INFO L376 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 15:51:05,515 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 15:51:05,515 INFO L82 PathProgramCache]: Analyzing trace with hash -1019570158, now seen corresponding path program 1 times [2018-09-14 15:51:05,515 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 15:51:05,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:51:05,516 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 15:51:05,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:51:05,516 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 15:51:05,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:51:05,569 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:51:05,570 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:51:05,570 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 15:51:05,586 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 15:51:05,587 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 15:51:05,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:51:05,610 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:51:05,631 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:51:05,631 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:51:05,651 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:51:05,673 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 15:51:05,674 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 6 [2018-09-14 15:51:05,674 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 15:51:05,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 15:51:05,674 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 15:51:05,675 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-14 15:51:05,675 INFO L87 Difference]: Start difference. First operand 49 states and 62 transitions. Second operand 5 states. [2018-09-14 15:51:05,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 15:51:05,706 INFO L93 Difference]: Finished difference Result 73 states and 89 transitions. [2018-09-14 15:51:05,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-14 15:51:05,710 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2018-09-14 15:51:05,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 15:51:05,711 INFO L225 Difference]: With dead ends: 73 [2018-09-14 15:51:05,711 INFO L226 Difference]: Without dead ends: 35 [2018-09-14 15:51:05,712 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-14 15:51:05,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-09-14 15:51:05,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2018-09-14 15:51:05,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-09-14 15:51:05,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2018-09-14 15:51:05,721 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 24 [2018-09-14 15:51:05,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 15:51:05,722 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2018-09-14 15:51:05,722 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 15:51:05,722 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2018-09-14 15:51:05,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-09-14 15:51:05,723 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 15:51:05,723 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 15:51:05,723 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 15:51:05,727 INFO L82 PathProgramCache]: Analyzing trace with hash 1155724272, now seen corresponding path program 1 times [2018-09-14 15:51:05,727 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 15:51:05,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:51:05,728 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 15:51:05,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:51:05,728 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 15:51:05,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:51:05,894 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:51:05,894 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 15:51:05,894 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-14 15:51:05,894 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 15:51:05,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 15:51:05,895 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 15:51:05,895 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-09-14 15:51:05,895 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand 5 states. [2018-09-14 15:51:06,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 15:51:06,102 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2018-09-14 15:51:06,102 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-14 15:51:06,102 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2018-09-14 15:51:06,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 15:51:06,103 INFO L225 Difference]: With dead ends: 34 [2018-09-14 15:51:06,103 INFO L226 Difference]: Without dead ends: 0 [2018-09-14 15:51:06,104 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-09-14 15:51:06,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-14 15:51:06,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-14 15:51:06,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-14 15:51:06,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-14 15:51:06,104 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2018-09-14 15:51:06,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 15:51:06,105 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-14 15:51:06,105 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 15:51:06,105 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-14 15:51:06,105 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-14 15:51:06,109 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-09-14 15:51:06,447 WARN L178 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 21 [2018-09-14 15:51:06,550 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 28 [2018-09-14 15:51:06,820 WARN L178 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 24 [2018-09-14 15:51:06,823 INFO L429 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-09-14 15:51:06,823 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-09-14 15:51:06,824 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-09-14 15:51:06,824 INFO L429 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-09-14 15:51:06,824 INFO L429 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-09-14 15:51:06,824 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-09-14 15:51:06,824 INFO L422 ceAbstractionStarter]: At program point L33(line 33) the Hoare annotation is: (and (<= 10000 main_~c3~0) (<= 2000 main_~c2~0) (<= 4000 main_~c1~0) (<= 1 main_~i~0) (<= main_~n~0 1) (<= 2000 main_~k~0) (<= main_~n~0 (+ main_~j~0 1))) [2018-09-14 15:51:06,824 INFO L426 ceAbstractionStarter]: For program point L33-1(line 33) no Hoare annotation was computed. [2018-09-14 15:51:06,824 INFO L426 ceAbstractionStarter]: For program point mainEXIT(lines 10 38) no Hoare annotation was computed. [2018-09-14 15:51:06,825 INFO L426 ceAbstractionStarter]: For program point L23(line 23) no Hoare annotation was computed. [2018-09-14 15:51:06,825 INFO L426 ceAbstractionStarter]: For program point L17(line 17) no Hoare annotation was computed. [2018-09-14 15:51:06,825 INFO L426 ceAbstractionStarter]: For program point mainFINAL(lines 10 38) no Hoare annotation was computed. [2018-09-14 15:51:06,825 INFO L426 ceAbstractionStarter]: For program point L32-1(lines 32 36) no Hoare annotation was computed. [2018-09-14 15:51:06,825 INFO L429 ceAbstractionStarter]: At program point mainENTRY(lines 10 38) the Hoare annotation is: true [2018-09-14 15:51:06,825 INFO L422 ceAbstractionStarter]: At program point L32-3(lines 32 36) the Hoare annotation is: (let ((.cse0 (<= main_~n~0 main_~j~0)) (.cse4 (<= 1 main_~i~0)) (.cse5 (<= main_~n~0 1)) (.cse1 (<= 10000 main_~c3~0)) (.cse2 (<= 2000 main_~c2~0)) (.cse3 (<= 4000 main_~c1~0))) (or (and (<= main_~n~0 0) (<= main_~i~0 0) .cse0) (and .cse1 .cse2 .cse3 .cse4 .cse5 .cse0) (and .cse4 .cse5 (and .cse1 .cse2 .cse3 (<= 2000 main_~k~0)) (<= main_~n~0 (+ main_~j~0 1))))) [2018-09-14 15:51:06,826 INFO L426 ceAbstractionStarter]: For program point L32-4(lines 32 36) no Hoare annotation was computed. [2018-09-14 15:51:06,826 INFO L426 ceAbstractionStarter]: For program point L26(lines 26 29) no Hoare annotation was computed. [2018-09-14 15:51:06,826 INFO L426 ceAbstractionStarter]: For program point L24(lines 24 29) no Hoare annotation was computed. [2018-09-14 15:51:06,826 INFO L422 ceAbstractionStarter]: At program point L26-2(lines 20 30) the Hoare annotation is: (let ((.cse0 (<= 10000 main_~c3~0)) (.cse1 (<= 2000 main_~c2~0)) (.cse2 (<= 4000 main_~c1~0))) (or (and (and .cse0 .cse1 .cse2 (<= 1 main_~i~0) (<= 2000 main_~k~0)) (<= main_~n~0 1)) (and .cse0 .cse1 .cse2 (<= 0 main_~i~0) (<= 0 main_~k~0) (<= main_~i~0 0)))) [2018-09-14 15:51:06,826 INFO L426 ceAbstractionStarter]: For program point L20-1(lines 20 30) no Hoare annotation was computed. [2018-09-14 15:51:06,826 INFO L426 ceAbstractionStarter]: For program point L20-3(lines 20 30) no Hoare annotation was computed. [2018-09-14 15:51:06,827 INFO L429 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-09-14 15:51:06,827 INFO L426 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-09-14 15:51:06,827 INFO L426 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-09-14 15:51:06,827 INFO L426 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-09-14 15:51:06,827 INFO L426 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-09-14 15:51:06,827 INFO L426 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-09-14 15:51:06,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 03:51:06 BoogieIcfgContainer [2018-09-14 15:51:06,843 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-14 15:51:06,844 INFO L168 Benchmark]: Toolchain (without parser) took 5810.51 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 741.9 MB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -492.0 MB). Peak memory consumption was 249.8 MB. Max. memory is 7.1 GB. [2018-09-14 15:51:06,845 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-14 15:51:06,846 INFO L168 Benchmark]: CACSL2BoogieTranslator took 259.19 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-09-14 15:51:06,847 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.52 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-14 15:51:06,847 INFO L168 Benchmark]: Boogie Preprocessor took 21.54 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-14 15:51:06,848 INFO L168 Benchmark]: RCFGBuilder took 631.12 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 741.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -791.0 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. [2018-09-14 15:51:06,849 INFO L168 Benchmark]: TraceAbstraction took 4866.45 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 288.4 MB). Peak memory consumption was 288.4 MB. Max. memory is 7.1 GB. [2018-09-14 15:51:06,853 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 259.19 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 23.52 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 21.54 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 631.12 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 741.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -791.0 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4866.45 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 288.4 MB). Peak memory consumption was 288.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: (((n <= 0 && i <= 0) && n <= j) || (((((10000 <= c3 && 2000 <= c2) && 4000 <= c1) && 1 <= i) && n <= 1) && n <= j)) || (((1 <= i && n <= 1) && ((10000 <= c3 && 2000 <= c2) && 4000 <= c1) && 2000 <= k) && n <= j + 1) - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: (((((10000 <= c3 && 2000 <= c2) && 4000 <= c1) && 1 <= i) && 2000 <= k) && n <= 1) || (((((10000 <= c3 && 2000 <= c2) && 4000 <= c1) && 0 <= i) && 0 <= k) && i <= 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 27 locations, 1 error locations. SAFE Result, 4.7s OverallTime, 7 OverallIterations, 3 TraceHistogramMax, 1.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.7s HoareAnnotationTime, HoareTripleCheckerStatistics: 190 SDtfs, 157 SDslu, 408 SDs, 0 SdLazy, 209 SolverSat, 46 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 325 GetRequests, 264 SyntacticMatches, 8 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49occurred in iteration=5, 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: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 40 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 13 PreInvPairs, 19 NumberOfFragments, 125 HoareAnnotationTreeSize, 13 FomulaSimplifications, 127 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 103 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 281 NumberOfCodeBlocks, 281 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 402 ConstructedInterpolants, 0 QuantifiedInterpolants, 21382 SizeOfPredicates, 20 NumberOfNonLiveVariables, 478 ConjunctsInSsa, 58 ConjunctsInUnsatCore, 21 InterpolantComputations, 4 PerfectInterpolantSequences, 27/61 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/large_const_true-unreach-call_true-termination.i_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-14_15-51-06-869.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/large_const_true-unreach-call_true-termination.i_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-14_15-51-06-869.csv Received shutdown request...