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-acceleration/underapprox_true-unreach-call1_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-14 15:50:23,337 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-14 15:50:23,339 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-14 15:50:23,350 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-14 15:50:23,351 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-14 15:50:23,352 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-14 15:50:23,353 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-14 15:50:23,355 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-14 15:50:23,356 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-14 15:50:23,357 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-14 15:50:23,358 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-14 15:50:23,358 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-14 15:50:23,359 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-14 15:50:23,360 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-14 15:50:23,361 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-14 15:50:23,362 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-14 15:50:23,363 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-14 15:50:23,365 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-14 15:50:23,367 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-14 15:50:23,368 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-14 15:50:23,369 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-14 15:50:23,371 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-14 15:50:23,373 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-14 15:50:23,373 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-14 15:50:23,373 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-14 15:50:23,374 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-14 15:50:23,375 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-14 15:50:23,376 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-14 15:50:23,377 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-14 15:50:23,378 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-14 15:50:23,378 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-14 15:50:23,379 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-14 15:50:23,379 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-14 15:50:23,380 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-14 15:50:23,381 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-14 15:50:23,381 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-14 15:50:23,382 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 15:50:23,403 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-14 15:50:23,403 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-14 15:50:23,404 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-14 15:50:23,404 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-14 15:50:23,404 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-14 15:50:23,405 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-14 15:50:23,405 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-14 15:50:23,405 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-14 15:50:23,405 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-14 15:50:23,405 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-14 15:50:23,406 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-14 15:50:23,406 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-14 15:50:23,410 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-14 15:50:23,410 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-14 15:50:23,410 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-14 15:50:23,410 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-14 15:50:23,410 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-14 15:50:23,411 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-14 15:50:23,411 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-14 15:50:23,411 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-14 15:50:23,411 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-14 15:50:23,412 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-14 15:50:23,412 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-14 15:50:23,412 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 15:50:23,412 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-14 15:50:23,412 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-14 15:50:23,413 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-14 15:50:23,413 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-14 15:50:23,413 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-14 15:50:23,413 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-14 15:50:23,413 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-14 15:50:23,413 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-14 15:50:23,414 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-14 15:50:23,462 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-14 15:50:23,479 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-14 15:50:23,485 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-14 15:50:23,486 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-14 15:50:23,487 INFO L276 PluginConnector]: CDTParser initialized [2018-09-14 15:50:23,488 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/underapprox_true-unreach-call1_true-termination.i [2018-09-14 15:50:23,844 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7296618b/1669b95641054bb0b00baf10cf76dbfd/FLAGa451dd7ca [2018-09-14 15:50:23,977 INFO L277 CDTParser]: Found 1 translation units. [2018-09-14 15:50:23,977 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/underapprox_true-unreach-call1_true-termination.i [2018-09-14 15:50:23,984 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7296618b/1669b95641054bb0b00baf10cf76dbfd/FLAGa451dd7ca [2018-09-14 15:50:24,003 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7296618b/1669b95641054bb0b00baf10cf76dbfd [2018-09-14 15:50:24,014 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-14 15:50:24,017 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-14 15:50:24,018 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-14 15:50:24,019 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-14 15:50:24,025 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-14 15:50:24,026 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 03:50:24" (1/1) ... [2018-09-14 15:50:24,030 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41e23d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:50:24, skipping insertion in model container [2018-09-14 15:50:24,030 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 03:50:24" (1/1) ... [2018-09-14 15:50:24,043 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-14 15:50:24,270 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 15:50:24,290 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-14 15:50:24,300 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 15:50:24,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:50:24 WrapperNode [2018-09-14 15:50:24,315 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-14 15:50:24,316 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-14 15:50:24,316 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-14 15:50:24,317 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-14 15:50:24,327 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:50:24" (1/1) ... [2018-09-14 15:50:24,333 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:50:24" (1/1) ... [2018-09-14 15:50:24,340 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-14 15:50:24,340 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-14 15:50:24,340 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-14 15:50:24,341 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-14 15:50:24,351 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:50:24" (1/1) ... [2018-09-14 15:50:24,351 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:50:24" (1/1) ... [2018-09-14 15:50:24,352 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:50:24" (1/1) ... [2018-09-14 15:50:24,352 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:50:24" (1/1) ... [2018-09-14 15:50:24,354 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:50:24" (1/1) ... [2018-09-14 15:50:24,366 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:50:24" (1/1) ... [2018-09-14 15:50:24,368 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:50:24" (1/1) ... [2018-09-14 15:50:24,370 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-14 15:50:24,370 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-14 15:50:24,370 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-14 15:50:24,373 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-14 15:50:24,375 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:50:24" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 15:50:24,442 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-14 15:50:24,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-14 15:50:24,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-14 15:50:24,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-14 15:50:24,443 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-14 15:50:24,443 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-14 15:50:24,444 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-09-14 15:50:24,444 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-09-14 15:50:24,739 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-14 15:50:24,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 03:50:24 BoogieIcfgContainer [2018-09-14 15:50:24,740 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-14 15:50:24,741 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-14 15:50:24,741 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-14 15:50:24,744 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-14 15:50:24,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 03:50:24" (1/3) ... [2018-09-14 15:50:24,745 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@676a23da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 03:50:24, skipping insertion in model container [2018-09-14 15:50:24,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:50:24" (2/3) ... [2018-09-14 15:50:24,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@676a23da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 03:50:24, skipping insertion in model container [2018-09-14 15:50:24,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 03:50:24" (3/3) ... [2018-09-14 15:50:24,747 INFO L112 eAbstractionObserver]: Analyzing ICFG underapprox_true-unreach-call1_true-termination.i [2018-09-14 15:50:24,756 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-14 15:50:24,763 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-14 15:50:24,811 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-14 15:50:24,811 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-14 15:50:24,812 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-14 15:50:24,812 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-14 15:50:24,812 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-14 15:50:24,812 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-14 15:50:24,812 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-14 15:50:24,812 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-14 15:50:24,812 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-14 15:50:24,828 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2018-09-14 15:50:24,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-09-14 15:50:24,834 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 15:50:24,835 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 15:50:24,836 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 15:50:24,841 INFO L82 PathProgramCache]: Analyzing trace with hash -10373566, now seen corresponding path program 1 times [2018-09-14 15:50:24,844 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 15:50:24,896 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:50:24,896 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 15:50:24,897 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:50:24,897 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 15:50:24,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:50:24,956 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 15:50:24,958 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 15:50:24,958 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-14 15:50:24,958 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 15:50:24,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-14 15:50:24,980 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-14 15:50:24,981 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-14 15:50:24,984 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2018-09-14 15:50:25,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 15:50:25,003 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2018-09-14 15:50:25,004 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-14 15:50:25,005 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-09-14 15:50:25,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 15:50:25,014 INFO L225 Difference]: With dead ends: 29 [2018-09-14 15:50:25,014 INFO L226 Difference]: Without dead ends: 12 [2018-09-14 15:50:25,017 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 15:50:25,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-09-14 15:50:25,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-09-14 15:50:25,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-09-14 15:50:25,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-09-14 15:50:25,053 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-09-14 15:50:25,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 15:50:25,053 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-09-14 15:50:25,054 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-14 15:50:25,054 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-09-14 15:50:25,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-09-14 15:50:25,055 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 15:50:25,055 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 15:50:25,055 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 15:50:25,056 INFO L82 PathProgramCache]: Analyzing trace with hash -571410792, now seen corresponding path program 1 times [2018-09-14 15:50:25,056 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 15:50:25,057 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:50:25,057 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 15:50:25,057 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:50:25,058 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 15:50:25,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:50:25,187 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 15:50:25,188 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 15:50:25,188 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-14 15:50:25,189 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 15:50:25,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 15:50:25,191 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 15:50:25,191 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 15:50:25,192 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 3 states. [2018-09-14 15:50:25,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 15:50:25,257 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-09-14 15:50:25,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 15:50:25,261 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-09-14 15:50:25,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 15:50:25,262 INFO L225 Difference]: With dead ends: 19 [2018-09-14 15:50:25,262 INFO L226 Difference]: Without dead ends: 14 [2018-09-14 15:50:25,263 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 15:50:25,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-09-14 15:50:25,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-09-14 15:50:25,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-09-14 15:50:25,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-09-14 15:50:25,268 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2018-09-14 15:50:25,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 15:50:25,268 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-09-14 15:50:25,268 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 15:50:25,269 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-09-14 15:50:25,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-09-14 15:50:25,270 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 15:50:25,270 INFO L376 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 15:50:25,270 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 15:50:25,270 INFO L82 PathProgramCache]: Analyzing trace with hash 1625028318, now seen corresponding path program 1 times [2018-09-14 15:50:25,271 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 15:50:25,272 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:50:25,272 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 15:50:25,272 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:50:25,272 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 15:50:25,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:50:25,396 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 15:50:25,396 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:50:25,397 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 15:50:25,407 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 15:50:25,407 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 15:50:25,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:50:25,437 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:50:25,481 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 15:50:25,481 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:50:25,628 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 15:50:25,651 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:50:25,652 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 15:50:25,668 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 15:50:25,668 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 15:50:25,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:50:25,687 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:50:25,719 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 15:50:25,719 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:50:25,736 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 15:50:25,738 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 15:50:25,739 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4] total 6 [2018-09-14 15:50:25,739 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 15:50:25,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 15:50:25,739 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 15:50:25,740 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-14 15:50:25,740 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 4 states. [2018-09-14 15:50:25,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 15:50:25,812 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-09-14 15:50:25,812 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 15:50:25,812 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2018-09-14 15:50:25,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 15:50:25,813 INFO L225 Difference]: With dead ends: 21 [2018-09-14 15:50:25,813 INFO L226 Difference]: Without dead ends: 16 [2018-09-14 15:50:25,814 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-14 15:50:25,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-09-14 15:50:25,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-09-14 15:50:25,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-09-14 15:50:25,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-09-14 15:50:25,818 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 13 [2018-09-14 15:50:25,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 15:50:25,818 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-09-14 15:50:25,818 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 15:50:25,819 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-09-14 15:50:25,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-09-14 15:50:25,819 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 15:50:25,820 INFO L376 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 15:50:25,820 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 15:50:25,820 INFO L82 PathProgramCache]: Analyzing trace with hash -720896604, now seen corresponding path program 2 times [2018-09-14 15:50:25,820 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 15:50:25,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:50:25,821 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 15:50:25,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:50:25,822 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 15:50:25,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:50:25,979 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:50:25,980 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:50:25,980 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 15:50:25,999 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-14 15:50:25,999 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-09-14 15:50:26,013 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-14 15:50:26,014 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-14 15:50:26,016 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:50:26,082 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:50:26,082 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:50:26,297 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:50:26,319 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:50:26,319 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 15:50:26,336 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-14 15:50:26,336 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-09-14 15:50:26,355 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-14 15:50:26,355 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-14 15:50:26,358 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:50:26,375 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:50:26,376 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:50:26,397 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:50:26,404 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 15:50:26,404 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5] total 8 [2018-09-14 15:50:26,404 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 15:50:26,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 15:50:26,405 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 15:50:26,405 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-09-14 15:50:26,406 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 5 states. [2018-09-14 15:50:26,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 15:50:26,444 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-09-14 15:50:26,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-14 15:50:26,445 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2018-09-14 15:50:26,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 15:50:26,446 INFO L225 Difference]: With dead ends: 23 [2018-09-14 15:50:26,446 INFO L226 Difference]: Without dead ends: 18 [2018-09-14 15:50:26,446 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 55 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-09-14 15:50:26,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-09-14 15:50:26,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-09-14 15:50:26,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-09-14 15:50:26,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-09-14 15:50:26,451 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 15 [2018-09-14 15:50:26,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 15:50:26,451 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-09-14 15:50:26,451 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 15:50:26,451 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-09-14 15:50:26,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-09-14 15:50:26,452 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 15:50:26,452 INFO L376 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 15:50:26,452 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 15:50:26,453 INFO L82 PathProgramCache]: Analyzing trace with hash -296916246, now seen corresponding path program 3 times [2018-09-14 15:50:26,453 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 15:50:26,454 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:50:26,454 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-14 15:50:26,454 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:50:26,454 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 15:50:26,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:50:26,591 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:50:26,592 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:50:26,592 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 15:50:26,606 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-14 15:50:26,606 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-09-14 15:50:26,620 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-09-14 15:50:26,621 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-14 15:50:26,625 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:50:26,698 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:50:26,698 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:50:26,790 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:50:26,811 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:50:26,811 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 15:50:26,826 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-14 15:50:26,826 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-09-14 15:50:26,861 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-09-14 15:50:26,862 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-14 15:50:26,865 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:50:26,901 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:50:26,901 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:50:26,934 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:50:26,937 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 15:50:26,937 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6] total 10 [2018-09-14 15:50:26,937 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 15:50:26,938 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 15:50:26,938 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 15:50:26,939 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-09-14 15:50:26,939 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 6 states. [2018-09-14 15:50:27,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 15:50:27,036 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-09-14 15:50:27,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-14 15:50:27,036 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2018-09-14 15:50:27,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 15:50:27,037 INFO L225 Difference]: With dead ends: 25 [2018-09-14 15:50:27,037 INFO L226 Difference]: Without dead ends: 20 [2018-09-14 15:50:27,038 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 62 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-09-14 15:50:27,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-09-14 15:50:27,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-09-14 15:50:27,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-09-14 15:50:27,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2018-09-14 15:50:27,042 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 17 [2018-09-14 15:50:27,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 15:50:27,043 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2018-09-14 15:50:27,043 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 15:50:27,043 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2018-09-14 15:50:27,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-09-14 15:50:27,044 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 15:50:27,044 INFO L376 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 15:50:27,045 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 15:50:27,045 INFO L82 PathProgramCache]: Analyzing trace with hash -873685328, now seen corresponding path program 4 times [2018-09-14 15:50:27,045 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 15:50:27,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:50:27,046 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-14 15:50:27,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:50:27,046 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 15:50:27,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:50:27,322 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:50:27,323 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:50:27,324 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 15:50:27,343 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-14 15:50:27,344 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-09-14 15:50:27,386 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-14 15:50:27,386 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-14 15:50:27,389 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:50:27,452 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:50:27,452 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:50:27,662 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:50:27,684 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:50:27,684 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 15:50:27,699 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-14 15:50:27,700 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-09-14 15:50:27,725 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-14 15:50:27,725 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-14 15:50:27,728 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:50:27,737 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:50:27,737 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:50:27,760 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:50:27,762 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 15:50:27,763 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7] total 12 [2018-09-14 15:50:27,763 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 15:50:27,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-14 15:50:27,764 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-14 15:50:27,764 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2018-09-14 15:50:27,765 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 7 states. [2018-09-14 15:50:27,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 15:50:27,927 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2018-09-14 15:50:27,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 15:50:27,929 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2018-09-14 15:50:27,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 15:50:27,930 INFO L225 Difference]: With dead ends: 27 [2018-09-14 15:50:27,930 INFO L226 Difference]: Without dead ends: 22 [2018-09-14 15:50:27,931 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 69 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2018-09-14 15:50:27,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-09-14 15:50:27,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-09-14 15:50:27,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-09-14 15:50:27,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-09-14 15:50:27,936 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 19 [2018-09-14 15:50:27,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 15:50:27,936 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-09-14 15:50:27,936 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-14 15:50:27,936 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-09-14 15:50:27,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-09-14 15:50:27,937 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 15:50:27,937 INFO L376 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 15:50:27,937 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 15:50:27,938 INFO L82 PathProgramCache]: Analyzing trace with hash -1097991946, now seen corresponding path program 5 times [2018-09-14 15:50:27,938 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 15:50:27,938 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:50:27,939 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-14 15:50:27,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:50:27,939 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 15:50:27,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:50:28,140 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:50:28,141 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:50:28,141 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 15:50:28,150 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-14 15:50:28,150 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder INSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-09-14 15:50:28,175 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-09-14 15:50:28,175 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-14 15:50:28,178 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:50:28,200 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:50:28,200 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:50:28,420 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:50:28,441 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:50:28,441 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 15:50:28,457 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-14 15:50:28,457 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder INSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-09-14 15:50:28,503 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-09-14 15:50:28,503 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-14 15:50:28,506 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:50:28,531 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:50:28,531 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:50:28,540 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:50:28,541 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 15:50:28,542 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8] total 14 [2018-09-14 15:50:28,542 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 15:50:28,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-14 15:50:28,543 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-14 15:50:28,543 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2018-09-14 15:50:28,543 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 8 states. [2018-09-14 15:50:28,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 15:50:28,643 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-09-14 15:50:28,643 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 15:50:28,643 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2018-09-14 15:50:28,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 15:50:28,644 INFO L225 Difference]: With dead ends: 29 [2018-09-14 15:50:28,644 INFO L226 Difference]: Without dead ends: 24 [2018-09-14 15:50:28,645 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 76 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2018-09-14 15:50:28,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-09-14 15:50:28,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-09-14 15:50:28,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-09-14 15:50:28,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2018-09-14 15:50:28,649 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 21 [2018-09-14 15:50:28,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 15:50:28,650 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2018-09-14 15:50:28,650 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-14 15:50:28,650 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2018-09-14 15:50:28,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-09-14 15:50:28,651 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 15:50:28,651 INFO L376 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 15:50:28,651 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 15:50:28,652 INFO L82 PathProgramCache]: Analyzing trace with hash -1908287044, now seen corresponding path program 6 times [2018-09-14 15:50:28,652 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 15:50:28,653 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:50:28,653 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-14 15:50:28,653 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:50:28,653 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 15:50:28,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:50:35,407 WARN L979 $PredicateComparison]: unable to prove that (let ((.cse0 (+ (* 715827883 c_main_~y~0) 357913936))) (<= .cse0 (* 1073741824 (div .cse0 1073741824)))) is different from false [2018-09-14 15:50:55,647 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 22 refuted. 8 times theorem prover too weak. 0 trivial. 12 not checked. [2018-09-14 15:50:55,648 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:50:55,648 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 15:50:55,657 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-14 15:50:55,658 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder MIX_INSIDE_OUTSIDE (IT: FPandBP) [2018-09-14 15:50:55,706 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-09-14 15:50:55,706 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-14 15:50:55,709 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:51:07,911 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 19 [2018-09-14 15:51:08,143 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:51:08,144 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:52:07,121 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 38 refuted. 4 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:52:07,155 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:52:07,155 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 15:52:07,170 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-14 15:52:07,170 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder MIX_INSIDE_OUTSIDE (IT: FPandBP) [2018-09-14 15:52:07,250 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-09-14 15:52:07,250 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-14 15:52:07,254 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:52:09,877 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:52:09,877 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:52:13,198 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 38 refuted. 4 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:52:13,200 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 15:52:13,201 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11, 11, 11] total 26 [2018-09-14 15:52:13,201 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 15:52:13,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-09-14 15:52:13,201 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-09-14 15:52:13,202 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=449, Unknown=38, NotChecked=46, Total=650 [2018-09-14 15:52:13,202 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 19 states. [2018-09-14 15:52:15,911 WARN L178 SmtUtils]: Spent 2.27 s on a formula simplification that was a NOOP. DAG size: 24 [2018-09-14 15:52:15,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 15:52:15,925 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-09-14 15:52:15,925 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-14 15:52:15,925 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 23 [2018-09-14 15:52:15,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 15:52:15,926 INFO L225 Difference]: With dead ends: 31 [2018-09-14 15:52:15,926 INFO L226 Difference]: Without dead ends: 26 [2018-09-14 15:52:15,927 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 71 SyntacticMatches, 7 SemanticMatches, 25 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 106.3s TimeCoverageRelationStatistics Valid=123, Invalid=493, Unknown=38, NotChecked=48, Total=702 [2018-09-14 15:52:15,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-09-14 15:52:15,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-09-14 15:52:15,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-09-14 15:52:15,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2018-09-14 15:52:15,933 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 23 [2018-09-14 15:52:15,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 15:52:15,933 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2018-09-14 15:52:15,933 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-09-14 15:52:15,933 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2018-09-14 15:52:15,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-09-14 15:52:15,934 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 15:52:15,934 INFO L376 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 15:52:15,934 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 15:52:15,935 INFO L82 PathProgramCache]: Analyzing trace with hash 1082171650, now seen corresponding path program 7 times [2018-09-14 15:52:15,935 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 15:52:15,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:52:15,936 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-14 15:52:15,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:52:15,936 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 15:52:15,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:52:16,591 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 14 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:52:16,592 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:52:16,592 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 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 15:52:16,601 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 15:52:16,601 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 15:52:16,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:52:16,614 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:52:16,647 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 14 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:52:16,647 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:52:16,931 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 14 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:52:16,951 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:52:16,951 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 15 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 15 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 15:52:16,967 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 15:52:16,967 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 15:52:16,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:52:16,996 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:52:17,025 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 14 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:52:17,025 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:52:17,080 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 14 proven. 42 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 (15)] Exception during sending of exit command (exit): Broken pipe [2018-09-14 15:52:17,082 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 15:52:17,082 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 9] total 16 [2018-09-14 15:52:17,083 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 15:52:17,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 15:52:17,083 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 15:52:17,084 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2018-09-14 15:52:17,084 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 9 states. [2018-09-14 15:52:17,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 15:52:17,149 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2018-09-14 15:52:17,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-14 15:52:17,151 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2018-09-14 15:52:17,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 15:52:17,152 INFO L225 Difference]: With dead ends: 26 [2018-09-14 15:52:17,152 INFO L226 Difference]: Without dead ends: 0 [2018-09-14 15:52:17,152 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 91 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2018-09-14 15:52:17,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-14 15:52:17,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-14 15:52:17,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-14 15:52:17,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-14 15:52:17,154 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2018-09-14 15:52:17,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 15:52:17,154 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-14 15:52:17,154 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 15:52:17,154 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-14 15:52:17,154 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-14 15:52:17,160 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-09-14 15:52:17,276 INFO L429 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-09-14 15:52:17,276 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-09-14 15:52:17,276 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-09-14 15:52:17,276 INFO L429 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-09-14 15:52:17,276 INFO L429 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-09-14 15:52:17,277 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-09-14 15:52:17,277 INFO L429 ceAbstractionStarter]: At program point mainENTRY(lines 8 16) the Hoare annotation is: true [2018-09-14 15:52:17,277 INFO L426 ceAbstractionStarter]: For program point mainEXIT(lines 8 16) no Hoare annotation was computed. [2018-09-14 15:52:17,277 INFO L426 ceAbstractionStarter]: For program point mainFINAL(lines 8 16) no Hoare annotation was computed. [2018-09-14 15:52:17,277 INFO L426 ceAbstractionStarter]: For program point L11-1(lines 11 14) no Hoare annotation was computed. [2018-09-14 15:52:17,278 INFO L422 ceAbstractionStarter]: At program point L11-3(lines 11 14) the Hoare annotation is: (or (and (exists ((v_main_~y~0_46 Int)) (and (= (* 4 v_main_~y~0_46) main_~y~0) (<= 1 v_main_~y~0_46) (<= v_main_~y~0_46 1))) (<= 2 main_~x~0) (<= main_~x~0 2)) (and (<= 5 main_~x~0) (exists ((v_main_~y~0_46 Int)) (and (<= 1 v_main_~y~0_46) (= main_~y~0 (* 32 v_main_~y~0_46)) (<= v_main_~y~0_46 1))) (<= main_~x~0 5)) (and (<= 1 main_~y~0) (<= main_~x~0 0) (<= main_~y~0 1) (<= 0 main_~x~0)) (and (<= main_~x~0 6) (exists ((v_main_~y~0_46 Int)) (and (<= 1 v_main_~y~0_46) (= main_~y~0 (* 64 v_main_~y~0_46)) (<= v_main_~y~0_46 1))) (<= 6 main_~x~0)) (and (<= main_~x~0 3) (exists ((v_main_~y~0_46 Int)) (and (<= 1 v_main_~y~0_46) (= main_~y~0 (* 8 v_main_~y~0_46)) (<= v_main_~y~0_46 1))) (<= 3 main_~x~0)) (and (<= 4 main_~x~0) (exists ((v_main_~y~0_46 Int)) (and (= main_~y~0 (* 16 v_main_~y~0_46)) (<= 1 v_main_~y~0_46) (<= v_main_~y~0_46 1))) (<= main_~x~0 4)) (and (exists ((v_main_~y~0_46 Int)) (and (<= 1 v_main_~y~0_46) (= (* 2 v_main_~y~0_46) main_~y~0) (<= v_main_~y~0_46 1))) (<= main_~x~0 1) (<= 1 main_~x~0))) [2018-09-14 15:52:17,278 INFO L422 ceAbstractionStarter]: At program point L11-4(lines 11 14) the Hoare annotation is: (exists ((v_main_~y~0_46 Int)) (and (<= 1 v_main_~y~0_46) (= main_~y~0 (* 64 v_main_~y~0_46)) (<= v_main_~y~0_46 1))) [2018-09-14 15:52:17,278 INFO L426 ceAbstractionStarter]: For program point L3-2(lines 2 7) no Hoare annotation was computed. [2018-09-14 15:52:17,278 INFO L429 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 2 7) the Hoare annotation is: true [2018-09-14 15:52:17,278 INFO L426 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 2 7) no Hoare annotation was computed. [2018-09-14 15:52:17,278 INFO L426 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2018-09-14 15:52:17,278 INFO L426 ceAbstractionStarter]: For program point L4(line 4) no Hoare annotation was computed. [2018-09-14 15:52:17,279 INFO L426 ceAbstractionStarter]: For program point L3(lines 3 5) no Hoare annotation was computed. [2018-09-14 15:52:17,283 WARN L382 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-14 15:52:17,284 WARN L382 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-14 15:52:17,284 WARN L382 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-14 15:52:17,285 WARN L382 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-14 15:52:17,285 WARN L382 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-14 15:52:17,285 WARN L382 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-14 15:52:17,285 WARN L382 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-14 15:52:17,286 WARN L382 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-14 15:52:17,286 WARN L382 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-14 15:52:17,286 WARN L382 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-14 15:52:17,286 WARN L382 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-14 15:52:17,286 WARN L382 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-14 15:52:17,286 WARN L382 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-14 15:52:17,287 WARN L382 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-14 15:52:17,287 WARN L382 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-14 15:52:17,287 WARN L382 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-14 15:52:17,287 WARN L382 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-14 15:52:17,287 WARN L382 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-14 15:52:17,296 WARN L382 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-14 15:52:17,296 WARN L382 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-14 15:52:17,297 WARN L382 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-14 15:52:17,297 WARN L382 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-14 15:52:17,297 WARN L382 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-14 15:52:17,297 WARN L382 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-14 15:52:17,298 WARN L382 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-14 15:52:17,298 WARN L382 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-14 15:52:17,298 WARN L382 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-14 15:52:17,298 WARN L382 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-14 15:52:17,299 WARN L382 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-14 15:52:17,299 WARN L382 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-14 15:52:17,299 WARN L382 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-14 15:52:17,299 WARN L382 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-14 15:52:17,300 WARN L382 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-14 15:52:17,300 WARN L382 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-14 15:52:17,300 WARN L382 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-14 15:52:17,300 WARN L382 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-14 15:52:17,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 03:52:17 BoogieIcfgContainer [2018-09-14 15:52:17,303 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-14 15:52:17,304 INFO L168 Benchmark]: Toolchain (without parser) took 113289.17 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 736.6 MB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -291.2 MB). Peak memory consumption was 445.4 MB. Max. memory is 7.1 GB. [2018-09-14 15:52:17,305 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 15:52:17,306 INFO L168 Benchmark]: CACSL2BoogieTranslator took 297.40 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 15:52:17,307 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.67 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 15:52:17,307 INFO L168 Benchmark]: Boogie Preprocessor took 29.49 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 15:52:17,308 INFO L168 Benchmark]: RCFGBuilder took 369.89 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 736.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -788.6 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB. [2018-09-14 15:52:17,309 INFO L168 Benchmark]: TraceAbstraction took 112562.58 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 486.8 MB). Peak memory consumption was 486.8 MB. Max. memory is 7.1 GB. [2018-09-14 15:52:17,313 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 297.40 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 23.67 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 29.49 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 369.89 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 736.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -788.6 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 112562.58 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 486.8 MB). Peak memory consumption was 486.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: 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: 11]: Loop Invariant [2018-09-14 15:52:17,325 WARN L382 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-14 15:52:17,325 WARN L382 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-14 15:52:17,326 WARN L382 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-14 15:52:17,326 WARN L382 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-14 15:52:17,326 WARN L382 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-14 15:52:17,326 WARN L382 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-14 15:52:17,326 WARN L382 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-14 15:52:17,327 WARN L382 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-14 15:52:17,327 WARN L382 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-14 15:52:17,327 WARN L382 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-14 15:52:17,327 WARN L382 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-14 15:52:17,328 WARN L382 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-14 15:52:17,328 WARN L382 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-14 15:52:17,328 WARN L382 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-14 15:52:17,328 WARN L382 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-14 15:52:17,328 WARN L382 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-14 15:52:17,329 WARN L382 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-14 15:52:17,329 WARN L382 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-14 15:52:17,332 WARN L382 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-14 15:52:17,332 WARN L382 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-14 15:52:17,333 WARN L382 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-14 15:52:17,333 WARN L382 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-14 15:52:17,333 WARN L382 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-14 15:52:17,333 WARN L382 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-14 15:52:17,334 WARN L382 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-14 15:52:17,334 WARN L382 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-14 15:52:17,334 WARN L382 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-14 15:52:17,334 WARN L382 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-14 15:52:17,335 WARN L382 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-14 15:52:17,335 WARN L382 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-14 15:52:17,335 WARN L382 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-14 15:52:17,335 WARN L382 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-14 15:52:17,335 WARN L382 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-14 15:52:17,336 WARN L382 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-14 15:52:17,336 WARN L382 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-14 15:52:17,336 WARN L382 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] Derived loop invariant: ((((((((\exists v_main_~y~0_46 : int :: (4 * v_main_~y~0_46 == y && 1 <= v_main_~y~0_46) && v_main_~y~0_46 <= 1) && 2 <= x) && x <= 2) || ((5 <= x && (\exists v_main_~y~0_46 : int :: (1 <= v_main_~y~0_46 && y == 32 * v_main_~y~0_46) && v_main_~y~0_46 <= 1)) && x <= 5)) || (((1 <= y && x <= 0) && y <= 1) && 0 <= x)) || ((x <= 6 && (\exists v_main_~y~0_46 : int :: (1 <= v_main_~y~0_46 && y == 64 * v_main_~y~0_46) && v_main_~y~0_46 <= 1)) && 6 <= x)) || ((x <= 3 && (\exists v_main_~y~0_46 : int :: (1 <= v_main_~y~0_46 && y == 8 * v_main_~y~0_46) && v_main_~y~0_46 <= 1)) && 3 <= x)) || ((4 <= x && (\exists v_main_~y~0_46 : int :: (y == 16 * v_main_~y~0_46 && 1 <= v_main_~y~0_46) && v_main_~y~0_46 <= 1)) && x <= 4)) || (((\exists v_main_~y~0_46 : int :: (1 <= v_main_~y~0_46 && 2 * v_main_~y~0_46 == y) && v_main_~y~0_46 <= 1) && x <= 1) && 1 <= x) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. SAFE Result, 112.4s OverallTime, 9 OverallIterations, 8 TraceHistogramMax, 3.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 127 SDtfs, 2 SDslu, 504 SDs, 0 SdLazy, 296 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 575 GetRequests, 476 SyntacticMatches, 19 SemanticMatches, 80 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 109.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred 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: 0.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 15 PreInvPairs, 23 NumberOfFragments, 152 HoareAnnotationTreeSize, 15 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 107.7s InterpolantComputationTime, 420 NumberOfCodeBlocks, 420 NumberOfCodeBlocksAsserted, 55 NumberOfCheckSat, 649 ConstructedInterpolants, 30 QuantifiedInterpolants, 64069 SizeOfPredicates, 14 NumberOfNonLiveVariables, 686 ConjunctsInSsa, 160 ConjunctsInUnsatCore, 37 InterpolantComputations, 2 PerfectInterpolantSequences, 70/840 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/underapprox_true-unreach-call1_true-termination.i_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-14_15-52-17-342.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/underapprox_true-unreach-call1_true-termination.i_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-14_15-52-17-342.csv Received shutdown request...