java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label54_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-18 11:26:22,372 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-18 11:26:22,374 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-18 11:26:22,393 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-18 11:26:22,393 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-18 11:26:22,394 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-18 11:26:22,396 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-18 11:26:22,400 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-18 11:26:22,401 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-18 11:26:22,403 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-18 11:26:22,404 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-18 11:26:22,406 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-18 11:26:22,407 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-18 11:26:22,410 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-18 11:26:22,412 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-18 11:26:22,420 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-18 11:26:22,422 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-18 11:26:22,424 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-18 11:26:22,429 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-18 11:26:22,431 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-18 11:26:22,432 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-18 11:26:22,436 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-18 11:26:22,440 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-18 11:26:22,440 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-18 11:26:22,440 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-18 11:26:22,441 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-18 11:26:22,443 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-18 11:26:22,444 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-18 11:26:22,446 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-18 11:26:22,448 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-18 11:26:22,449 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-18 11:26:22,451 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-09-18 11:26:22,455 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-18 11:26:22,477 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-18 11:26:22,477 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-18 11:26:22,478 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-18 11:26:22,478 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-18 11:26:22,479 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-18 11:26:22,479 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-18 11:26:22,479 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-18 11:26:22,479 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-18 11:26:22,479 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-18 11:26:22,480 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-18 11:26:22,480 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-18 11:26:22,480 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-18 11:26:22,481 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-18 11:26:22,482 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-18 11:26:22,482 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-18 11:26:22,482 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-18 11:26:22,482 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-18 11:26:22,482 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-18 11:26:22,483 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-18 11:26:22,483 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-18 11:26:22,483 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-18 11:26:22,483 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-18 11:26:22,485 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-18 11:26:22,485 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-18 11:26:22,486 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 11:26:22,486 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-18 11:26:22,486 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-18 11:26:22,486 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-18 11:26:22,486 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-18 11:26:22,487 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-18 11:26:22,487 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-18 11:26:22,487 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-18 11:26:22,487 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-18 11:26:22,487 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-18 11:26:22,557 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-18 11:26:22,576 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-18 11:26:22,581 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-18 11:26:22,583 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-18 11:26:22,583 INFO L276 PluginConnector]: CDTParser initialized [2018-09-18 11:26:22,584 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label54_true-unreach-call.c [2018-09-18 11:26:22,959 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c1d90689/4f71593fb5574ae8a96ba1b633325ee2/FLAGc25390431 [2018-09-18 11:26:23,286 INFO L277 CDTParser]: Found 1 translation units. [2018-09-18 11:26:23,287 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label54_true-unreach-call.c [2018-09-18 11:26:23,310 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c1d90689/4f71593fb5574ae8a96ba1b633325ee2/FLAGc25390431 [2018-09-18 11:26:23,337 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c1d90689/4f71593fb5574ae8a96ba1b633325ee2 [2018-09-18 11:26:23,349 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-18 11:26:23,355 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-18 11:26:23,356 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-18 11:26:23,356 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-18 11:26:23,363 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-18 11:26:23,365 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 11:26:23" (1/1) ... [2018-09-18 11:26:23,368 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bf5491e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:26:23, skipping insertion in model container [2018-09-18 11:26:23,368 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 11:26:23" (1/1) ... [2018-09-18 11:26:23,381 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-18 11:26:24,061 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 11:26:24,083 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-18 11:26:24,272 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 11:26:24,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:26:24 WrapperNode [2018-09-18 11:26:24,357 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-18 11:26:24,358 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-18 11:26:24,358 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-18 11:26:24,358 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-18 11:26:24,369 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:26:24" (1/1) ... [2018-09-18 11:26:24,419 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:26:24" (1/1) ... [2018-09-18 11:26:24,517 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-18 11:26:24,518 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-18 11:26:24,518 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-18 11:26:24,518 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-18 11:26:24,753 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:26:24" (1/1) ... [2018-09-18 11:26:24,753 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:26:24" (1/1) ... [2018-09-18 11:26:24,761 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:26:24" (1/1) ... [2018-09-18 11:26:24,761 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:26:24" (1/1) ... [2018-09-18 11:26:24,802 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:26:24" (1/1) ... [2018-09-18 11:26:24,815 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:26:24" (1/1) ... [2018-09-18 11:26:24,828 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:26:24" (1/1) ... [2018-09-18 11:26:24,844 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-18 11:26:24,845 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-18 11:26:24,845 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-18 11:26:24,845 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-18 11:26:24,846 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:26:24" (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 [2018-09-18 11:26:24,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-18 11:26:24,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-18 11:26:24,926 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-18 11:26:24,926 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-18 11:26:24,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-18 11:26:24,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-18 11:26:24,926 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-18 11:26:24,927 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-18 11:26:29,605 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-18 11:26:29,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 11:26:29 BoogieIcfgContainer [2018-09-18 11:26:29,606 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-18 11:26:29,608 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-18 11:26:29,608 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-18 11:26:29,611 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-18 11:26:29,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 11:26:23" (1/3) ... [2018-09-18 11:26:29,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11e7109d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 11:26:29, skipping insertion in model container [2018-09-18 11:26:29,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:26:24" (2/3) ... [2018-09-18 11:26:29,614 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11e7109d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 11:26:29, skipping insertion in model container [2018-09-18 11:26:29,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 11:26:29" (3/3) ... [2018-09-18 11:26:29,616 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label54_true-unreach-call.c [2018-09-18 11:26:29,627 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-18 11:26:29,637 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-18 11:26:29,695 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-18 11:26:29,696 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-18 11:26:29,697 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-18 11:26:29,697 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-18 11:26:29,697 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-18 11:26:29,697 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-18 11:26:29,697 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-18 11:26:29,698 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-18 11:26:29,698 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-18 11:26:29,729 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-09-18 11:26:29,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-09-18 11:26:29,741 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:26:29,742 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:26:29,743 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:26:29,749 INFO L82 PathProgramCache]: Analyzing trace with hash -639357604, now seen corresponding path program 1 times [2018-09-18 11:26:29,752 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:26:29,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:26:29,812 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:26:29,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:26:29,813 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:26:29,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:26:30,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:26:30,269 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:26:30,269 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-18 11:26:30,270 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:26:30,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-18 11:26:30,293 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-18 11:26:30,294 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 11:26:30,297 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-09-18 11:26:34,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:26:34,160 INFO L93 Difference]: Finished difference Result 998 states and 1780 transitions. [2018-09-18 11:26:34,161 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-18 11:26:34,163 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2018-09-18 11:26:34,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:26:34,187 INFO L225 Difference]: With dead ends: 998 [2018-09-18 11:26:34,187 INFO L226 Difference]: Without dead ends: 699 [2018-09-18 11:26:34,203 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 11:26:34,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2018-09-18 11:26:34,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 693. [2018-09-18 11:26:34,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 693 states. [2018-09-18 11:26:34,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1109 transitions. [2018-09-18 11:26:34,380 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1109 transitions. Word has length 44 [2018-09-18 11:26:34,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:26:34,381 INFO L480 AbstractCegarLoop]: Abstraction has 693 states and 1109 transitions. [2018-09-18 11:26:34,381 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-18 11:26:34,382 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1109 transitions. [2018-09-18 11:26:34,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-09-18 11:26:34,393 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:26:34,396 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:26:34,397 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:26:34,398 INFO L82 PathProgramCache]: Analyzing trace with hash 731087552, now seen corresponding path program 1 times [2018-09-18 11:26:34,398 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:26:34,400 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:26:34,400 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:26:34,400 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:26:34,402 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:26:34,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:26:34,929 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:26:34,929 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:26:34,930 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-09-18 11:26:34,930 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:26:34,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-18 11:26:34,932 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-18 11:26:34,933 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-09-18 11:26:34,933 INFO L87 Difference]: Start difference. First operand 693 states and 1109 transitions. Second operand 7 states. [2018-09-18 11:26:42,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:26:42,265 INFO L93 Difference]: Finished difference Result 2550 states and 4242 transitions. [2018-09-18 11:26:42,267 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-18 11:26:42,267 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 118 [2018-09-18 11:26:42,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:26:42,288 INFO L225 Difference]: With dead ends: 2550 [2018-09-18 11:26:42,289 INFO L226 Difference]: Without dead ends: 1863 [2018-09-18 11:26:42,296 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-09-18 11:26:42,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1863 states. [2018-09-18 11:26:42,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1863 to 1435. [2018-09-18 11:26:42,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1435 states. [2018-09-18 11:26:42,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1435 states to 1435 states and 2153 transitions. [2018-09-18 11:26:42,361 INFO L78 Accepts]: Start accepts. Automaton has 1435 states and 2153 transitions. Word has length 118 [2018-09-18 11:26:42,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:26:42,362 INFO L480 AbstractCegarLoop]: Abstraction has 1435 states and 2153 transitions. [2018-09-18 11:26:42,362 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-18 11:26:42,362 INFO L276 IsEmpty]: Start isEmpty. Operand 1435 states and 2153 transitions. [2018-09-18 11:26:42,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2018-09-18 11:26:42,368 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:26:42,369 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:26:42,369 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:26:42,369 INFO L82 PathProgramCache]: Analyzing trace with hash 162053839, now seen corresponding path program 1 times [2018-09-18 11:26:42,370 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:26:42,371 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:26:42,371 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:26:42,371 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:26:42,371 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:26:42,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:26:42,628 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 74 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 11:26:42,628 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:26:42,628 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:26:42,644 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:26:42,645 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:26:42,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:26:42,750 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:26:43,136 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-09-18 11:26:43,137 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:26:43,519 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 74 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 11:26:43,544 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 11:26:43,545 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-09-18 11:26:43,545 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:26:43,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:26:43,546 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:26:43,546 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-18 11:26:43,547 INFO L87 Difference]: Start difference. First operand 1435 states and 2153 transitions. Second operand 5 states. [2018-09-18 11:26:51,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:26:51,122 INFO L93 Difference]: Finished difference Result 5899 states and 9195 transitions. [2018-09-18 11:26:51,123 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 11:26:51,123 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 191 [2018-09-18 11:26:51,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:26:51,148 INFO L225 Difference]: With dead ends: 5899 [2018-09-18 11:26:51,149 INFO L226 Difference]: Without dead ends: 4470 [2018-09-18 11:26:51,159 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 377 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-09-18 11:26:51,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4470 states. [2018-09-18 11:26:51,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4470 to 4397. [2018-09-18 11:26:51,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4397 states. [2018-09-18 11:26:51,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4397 states to 4397 states and 6329 transitions. [2018-09-18 11:26:51,293 INFO L78 Accepts]: Start accepts. Automaton has 4397 states and 6329 transitions. Word has length 191 [2018-09-18 11:26:51,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:26:51,294 INFO L480 AbstractCegarLoop]: Abstraction has 4397 states and 6329 transitions. [2018-09-18 11:26:51,294 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 11:26:51,294 INFO L276 IsEmpty]: Start isEmpty. Operand 4397 states and 6329 transitions. [2018-09-18 11:26:51,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-09-18 11:26:51,301 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:26:51,301 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:26:51,302 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:26:51,302 INFO L82 PathProgramCache]: Analyzing trace with hash -875818686, now seen corresponding path program 1 times [2018-09-18 11:26:51,302 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:26:51,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:26:51,305 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:26:51,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:26:51,306 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:26:51,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:26:51,650 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-09-18 11:26:51,650 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:26:51,650 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:26:51,661 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:26:51,662 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:26:51,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:26:51,743 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:26:51,919 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-09-18 11:26:51,919 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:26:52,469 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-09-18 11:26:52,502 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 11:26:52,502 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 7 [2018-09-18 11:26:52,502 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:26:52,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-18 11:26:52,503 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-18 11:26:52,504 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-09-18 11:26:52,504 INFO L87 Difference]: Start difference. First operand 4397 states and 6329 transitions. Second operand 4 states. [2018-09-18 11:26:53,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:26:53,959 INFO L93 Difference]: Finished difference Result 10258 states and 15299 transitions. [2018-09-18 11:26:53,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-18 11:26:53,968 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 192 [2018-09-18 11:26:53,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:26:54,005 INFO L225 Difference]: With dead ends: 10258 [2018-09-18 11:26:54,005 INFO L226 Difference]: Without dead ends: 5867 [2018-09-18 11:26:54,032 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 386 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-09-18 11:26:54,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5867 states. [2018-09-18 11:26:54,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5867 to 5830. [2018-09-18 11:26:54,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5830 states. [2018-09-18 11:26:54,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5830 states to 5830 states and 8146 transitions. [2018-09-18 11:26:54,165 INFO L78 Accepts]: Start accepts. Automaton has 5830 states and 8146 transitions. Word has length 192 [2018-09-18 11:26:54,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:26:54,166 INFO L480 AbstractCegarLoop]: Abstraction has 5830 states and 8146 transitions. [2018-09-18 11:26:54,166 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-18 11:26:54,166 INFO L276 IsEmpty]: Start isEmpty. Operand 5830 states and 8146 transitions. [2018-09-18 11:26:54,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2018-09-18 11:26:54,174 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:26:54,174 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:26:54,174 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:26:54,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1021024169, now seen corresponding path program 1 times [2018-09-18 11:26:54,175 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:26:54,176 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:26:54,176 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:26:54,176 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:26:54,176 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:26:54,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:26:54,811 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 9 [2018-09-18 11:26:54,960 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-09-18 11:26:54,960 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:26:54,960 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:26:54,968 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:26:54,968 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:26:55,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:26:55,048 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:26:57,256 WARN L1001 $PredicateComparison]: unable to prove that (or (exists ((v_prenex_3 Int)) (let ((.cse2 (* 9 v_prenex_3))) (let ((.cse1 (div .cse2 10))) (let ((.cse0 (mod (+ .cse1 29) 90))) (and (<= (+ c_~a23~0 42) .cse0) (not (= .cse0 0)) (<= 0 (+ .cse1 58980)) (<= |c_old(~a23~0)| v_prenex_3) (<= 0 .cse2) (< (+ .cse1 58979) 0)))))) (exists ((v_prenex_14 Int)) (let ((.cse4 (* 9 v_prenex_14))) (let ((.cse5 (div .cse4 10))) (let ((.cse3 (mod (+ .cse5 29) 90))) (and (= .cse3 0) (<= |c_old(~a23~0)| v_prenex_14) (= 0 (mod .cse4 10)) (<= c_~a23~0 (+ .cse3 48)) (<= 0 (+ .cse5 58980))))))) (exists ((v_~a23~0_500 Int)) (let ((.cse8 (* 9 v_~a23~0_500))) (let ((.cse7 (div .cse8 10))) (let ((.cse6 (mod (+ .cse7 29) 90))) (and (not (= .cse6 0)) (<= (+ c_~a23~0 42) .cse6) (< (+ .cse7 58979) 0) (<= |c_old(~a23~0)| v_~a23~0_500) (= 0 (mod .cse8 10)) (= 0 (mod (+ .cse7 30) 90))))))) (exists ((v_prenex_13 Int)) (let ((.cse11 (* 9 v_prenex_13))) (let ((.cse10 (div .cse11 10))) (let ((.cse9 (mod (+ .cse10 29) 90))) (and (= .cse9 0) (<= c_~a23~0 (+ .cse9 48)) (<= |c_old(~a23~0)| v_prenex_13) (< (+ .cse10 58980) 0) (not (= 0 (mod (+ .cse10 30) 90))) (= 0 (mod .cse11 10))))))) (exists ((v_prenex_10 Int)) (let ((.cse12 (* 9 v_prenex_10))) (let ((.cse13 (div .cse12 10))) (let ((.cse14 (mod (+ .cse13 30) 90))) (and (< .cse12 0) (= (mod (+ .cse13 29) 90) 0) (not (= 0 .cse14)) (< (+ .cse13 58980) 0) (<= (+ c_~a23~0 42) .cse14) (not (= 0 (mod .cse12 10))) (<= |c_old(~a23~0)| v_prenex_10)))))) (exists ((v_prenex_8 Int)) (let ((.cse15 (* 9 v_prenex_8))) (let ((.cse16 (div .cse15 10))) (and (= 0 (mod .cse15 10)) (<= 0 (+ .cse16 58979)) (<= |c_old(~a23~0)| v_prenex_8) (<= c_~a23~0 (+ (mod (+ .cse16 29) 90) 48)) (= 0 (mod (+ .cse16 30) 90)))))) (exists ((v_prenex_9 Int)) (let ((.cse17 (* 9 v_prenex_9))) (let ((.cse18 (div .cse17 10))) (let ((.cse19 (mod (+ .cse18 29) 90))) (and (<= 0 .cse17) (not (= 0 (mod (+ .cse18 30) 90))) (not (= .cse19 0)) (<= |c_old(~a23~0)| v_prenex_9) (<= (+ c_~a23~0 42) .cse19) (< (+ .cse18 58980) 0) (< (+ .cse18 58979) 0)))))) (exists ((v_prenex_4 Int)) (let ((.cse21 (* 9 v_prenex_4))) (let ((.cse20 (div .cse21 10))) (and (<= 0 (+ .cse20 58980)) (<= c_~a23~0 (+ (mod (+ .cse20 30) 90) 48)) (< .cse21 0) (not (= 0 (mod .cse21 10))) (= (mod (+ .cse20 29) 90) 0) (<= |c_old(~a23~0)| v_prenex_4))))) (exists ((v_prenex_26 Int)) (let ((.cse23 (* 9 v_prenex_26))) (let ((.cse22 (div .cse23 10))) (and (< (+ .cse22 58980) 0) (<= |c_old(~a23~0)| v_prenex_26) (not (= 0 (mod (+ .cse22 30) 90))) (<= 0 (+ .cse22 58979)) (<= c_~a23~0 (+ (mod (+ .cse22 29) 90) 48)) (<= 0 .cse23))))) (exists ((v_prenex_11 Int)) (let ((.cse24 (* 9 v_prenex_11))) (let ((.cse25 (div .cse24 10))) (let ((.cse26 (mod (+ .cse25 30) 90))) (and (not (= 0 (mod .cse24 10))) (not (= (mod (+ .cse25 29) 90) 0)) (<= |c_old(~a23~0)| v_prenex_11) (< .cse24 0) (< (+ .cse25 58980) 0) (not (= 0 .cse26)) (<= (+ c_~a23~0 42) .cse26) (< (+ .cse25 58979) 0)))))) (exists ((v_prenex_20 Int)) (let ((.cse28 (* 9 v_prenex_20))) (let ((.cse27 (div .cse28 10))) (and (<= c_~a23~0 (+ (mod (+ .cse27 30) 90) 48)) (<= |c_old(~a23~0)| v_prenex_20) (<= 0 (+ .cse27 58979)) (<= 0 (+ .cse27 58980)) (< .cse28 0) (not (= 0 (mod .cse28 10))))))) (exists ((v_prenex_16 Int)) (let ((.cse31 (* 9 v_prenex_16))) (let ((.cse30 (div .cse31 10))) (let ((.cse29 (mod (+ .cse30 29) 90))) (and (<= |c_old(~a23~0)| v_prenex_16) (<= (+ c_~a23~0 42) .cse29) (< (+ .cse30 58979) 0) (not (= .cse29 0)) (= 0 (mod (+ .cse30 30) 90)) (<= 0 .cse31)))))) (exists ((v_prenex_15 Int)) (let ((.cse33 (* 9 v_prenex_15))) (let ((.cse32 (div .cse33 10))) (and (not (= 0 (mod (+ .cse32 30) 90))) (= 0 (mod .cse33 10)) (<= |c_old(~a23~0)| v_prenex_15) (< (+ .cse32 58980) 0) (<= 0 (+ .cse32 58979)) (<= c_~a23~0 (+ (mod (+ .cse32 29) 90) 48)))))) (exists ((v_prenex_5 Int)) (let ((.cse35 (* 9 v_prenex_5))) (let ((.cse34 (div .cse35 10))) (let ((.cse36 (mod (+ .cse34 30) 90))) (and (= (mod (+ .cse34 29) 90) 0) (not (= 0 (mod .cse35 10))) (<= c_~a23~0 (+ .cse36 48)) (<= |c_old(~a23~0)| v_prenex_5) (= 0 .cse36) (< .cse35 0)))))) (exists ((v_prenex_2 Int)) (let ((.cse38 (* 9 v_prenex_2))) (let ((.cse39 (div .cse38 10))) (let ((.cse37 (mod (+ .cse39 29) 90))) (and (<= c_~a23~0 (+ .cse37 48)) (<= |c_old(~a23~0)| v_prenex_2) (<= 0 .cse38) (= .cse37 0) (= 0 (mod (+ .cse39 30) 90))))))) (exists ((v_prenex_17 Int)) (let ((.cse41 (* 9 v_prenex_17))) (let ((.cse40 (div .cse41 10))) (and (<= c_~a23~0 (+ (mod (+ .cse40 29) 90) 48)) (<= 0 (+ .cse40 58979)) (<= |c_old(~a23~0)| v_prenex_17) (<= 0 .cse41) (<= 0 (+ .cse40 58980)))))) (exists ((v_prenex_19 Int)) (let ((.cse44 (* 9 v_prenex_19))) (let ((.cse42 (div .cse44 10))) (let ((.cse43 (mod (+ .cse42 29) 90))) (and (<= 0 (+ .cse42 58980)) (<= c_~a23~0 (+ .cse43 48)) (= .cse43 0) (<= 0 .cse44) (<= |c_old(~a23~0)| v_prenex_19)))))) (exists ((v_prenex_18 Int)) (let ((.cse47 (* 9 v_prenex_18))) (let ((.cse46 (div .cse47 10))) (let ((.cse45 (mod (+ .cse46 29) 90))) (and (not (= .cse45 0)) (< (+ .cse46 58979) 0) (< (+ .cse46 58980) 0) (not (= 0 (mod (+ .cse46 30) 90))) (<= |c_old(~a23~0)| v_prenex_18) (= 0 (mod .cse47 10)) (<= (+ c_~a23~0 42) .cse45)))))) (exists ((v_prenex_21 Int)) (let ((.cse49 (* 9 v_prenex_21))) (let ((.cse48 (div .cse49 10))) (and (<= 0 (+ .cse48 58979)) (<= |c_old(~a23~0)| v_prenex_21) (<= c_~a23~0 (+ (mod (+ .cse48 29) 90) 48)) (= 0 (mod .cse49 10)) (<= 0 (+ .cse48 58980)))))) (exists ((v_prenex_22 Int)) (let ((.cse52 (* 9 v_prenex_22))) (let ((.cse51 (div .cse52 10))) (let ((.cse50 (mod (+ .cse51 29) 90))) (and (= .cse50 0) (= 0 (mod (+ .cse51 30) 90)) (<= c_~a23~0 (+ .cse50 48)) (<= |c_old(~a23~0)| v_prenex_22) (= 0 (mod .cse52 10))))))) (exists ((v_prenex_1 Int)) (let ((.cse54 (* 9 v_prenex_1))) (let ((.cse55 (div .cse54 10))) (let ((.cse53 (mod (+ .cse55 30) 90))) (and (not (= 0 .cse53)) (<= (+ c_~a23~0 42) .cse53) (< .cse54 0) (not (= 0 (mod .cse54 10))) (<= |c_old(~a23~0)| v_prenex_1) (<= 0 (+ .cse55 58979)) (< (+ .cse55 58980) 0)))))) (exists ((v_prenex_25 Int)) (let ((.cse57 (* 9 v_prenex_25))) (let ((.cse58 (div .cse57 10))) (let ((.cse56 (mod (+ .cse58 29) 90))) (and (= .cse56 0) (<= 0 .cse57) (<= |c_old(~a23~0)| v_prenex_25) (<= c_~a23~0 (+ .cse56 48)) (not (= 0 (mod (+ .cse58 30) 90))) (< (+ .cse58 58980) 0)))))) (exists ((v_prenex_6 Int)) (let ((.cse61 (* 9 v_prenex_6))) (let ((.cse59 (div .cse61 10))) (let ((.cse60 (mod (+ .cse59 29) 90))) (and (< (+ .cse59 58979) 0) (not (= .cse60 0)) (<= (+ c_~a23~0 42) .cse60) (= 0 (mod .cse61 10)) (<= |c_old(~a23~0)| v_prenex_6) (<= 0 (+ .cse59 58980))))))) (exists ((v_prenex_24 Int)) (let ((.cse62 (* 9 v_prenex_24))) (let ((.cse64 (div .cse62 10))) (let ((.cse63 (mod (+ .cse64 30) 90))) (and (not (= 0 (mod .cse62 10))) (<= |c_old(~a23~0)| v_prenex_24) (= 0 .cse63) (<= 0 (+ .cse64 58979)) (<= c_~a23~0 (+ .cse63 48)) (< .cse62 0)))))) (exists ((v_prenex_12 Int)) (let ((.cse66 (* 9 v_prenex_12))) (let ((.cse65 (div .cse66 10))) (and (<= |c_old(~a23~0)| v_prenex_12) (= 0 (mod (+ .cse65 30) 90)) (<= c_~a23~0 (+ (mod (+ .cse65 29) 90) 48)) (<= 0 (+ .cse65 58979)) (<= 0 .cse66))))) (exists ((v_prenex_23 Int)) (let ((.cse69 (* 9 v_prenex_23))) (let ((.cse67 (div .cse69 10))) (let ((.cse68 (mod (+ .cse67 30) 90))) (and (< (+ .cse67 58979) 0) (= 0 .cse68) (<= |c_old(~a23~0)| v_prenex_23) (<= c_~a23~0 (+ .cse68 48)) (< .cse69 0) (not (= 0 (mod .cse69 10))) (not (= (mod (+ .cse67 29) 90) 0))))))) (exists ((v_prenex_7 Int)) (let ((.cse70 (* 9 v_prenex_7))) (let ((.cse71 (div .cse70 10))) (and (< .cse70 0) (< (+ .cse71 58979) 0) (<= |c_old(~a23~0)| v_prenex_7) (not (= 0 (mod .cse70 10))) (<= c_~a23~0 (+ (mod (+ .cse71 30) 90) 48)) (<= 0 (+ .cse71 58980)) (not (= (mod (+ .cse71 29) 90) 0))))))) is different from true [2018-09-18 11:26:57,831 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 71 trivial. 2 not checked. [2018-09-18 11:26:57,832 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:26:58,063 WARN L178 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2018-09-18 11:26:58,378 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-09-18 11:26:58,399 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 11:26:58,400 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 6] total 9 [2018-09-18 11:26:58,400 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:26:58,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 11:26:58,403 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 11:26:58,403 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=41, Unknown=1, NotChecked=12, Total=72 [2018-09-18 11:26:58,403 INFO L87 Difference]: Start difference. First operand 5830 states and 8146 transitions. Second operand 3 states. [2018-09-18 11:27:00,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:27:00,006 INFO L93 Difference]: Finished difference Result 14619 states and 21602 transitions. [2018-09-18 11:27:00,007 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 11:27:00,007 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 235 [2018-09-18 11:27:00,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:27:00,056 INFO L225 Difference]: With dead ends: 14619 [2018-09-18 11:27:00,056 INFO L226 Difference]: Without dead ends: 8795 [2018-09-18 11:27:00,089 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 480 GetRequests, 468 SyntacticMatches, 5 SemanticMatches, 7 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=18, Invalid=41, Unknown=1, NotChecked=12, Total=72 [2018-09-18 11:27:00,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8795 states. [2018-09-18 11:27:00,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8795 to 8716. [2018-09-18 11:27:00,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8716 states. [2018-09-18 11:27:00,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8716 states to 8716 states and 12391 transitions. [2018-09-18 11:27:00,298 INFO L78 Accepts]: Start accepts. Automaton has 8716 states and 12391 transitions. Word has length 235 [2018-09-18 11:27:00,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:27:00,298 INFO L480 AbstractCegarLoop]: Abstraction has 8716 states and 12391 transitions. [2018-09-18 11:27:00,298 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 11:27:00,299 INFO L276 IsEmpty]: Start isEmpty. Operand 8716 states and 12391 transitions. [2018-09-18 11:27:00,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2018-09-18 11:27:00,314 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:27:00,315 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:27:00,315 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:27:00,315 INFO L82 PathProgramCache]: Analyzing trace with hash -1641054639, now seen corresponding path program 1 times [2018-09-18 11:27:00,316 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:27:00,316 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:27:00,317 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:27:00,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:27:00,317 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:27:00,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:27:00,628 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2018-09-18 11:27:00,628 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:27:00,628 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-18 11:27:00,628 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:27:00,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-18 11:27:00,629 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-18 11:27:00,629 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 11:27:00,630 INFO L87 Difference]: Start difference. First operand 8716 states and 12391 transitions. Second operand 4 states. [2018-09-18 11:27:03,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:27:03,247 INFO L93 Difference]: Finished difference Result 19596 states and 29642 transitions. [2018-09-18 11:27:03,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-18 11:27:03,253 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 263 [2018-09-18 11:27:03,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:27:03,302 INFO L225 Difference]: With dead ends: 19596 [2018-09-18 11:27:03,302 INFO L226 Difference]: Without dead ends: 10886 [2018-09-18 11:27:03,345 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 11:27:03,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10886 states. [2018-09-18 11:27:03,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10886 to 10536. [2018-09-18 11:27:03,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10536 states. [2018-09-18 11:27:03,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10536 states to 10536 states and 14575 transitions. [2018-09-18 11:27:03,586 INFO L78 Accepts]: Start accepts. Automaton has 10536 states and 14575 transitions. Word has length 263 [2018-09-18 11:27:03,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:27:03,587 INFO L480 AbstractCegarLoop]: Abstraction has 10536 states and 14575 transitions. [2018-09-18 11:27:03,587 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-18 11:27:03,588 INFO L276 IsEmpty]: Start isEmpty. Operand 10536 states and 14575 transitions. [2018-09-18 11:27:03,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2018-09-18 11:27:03,629 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:27:03,629 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:27:03,629 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:27:03,630 INFO L82 PathProgramCache]: Analyzing trace with hash 1994193760, now seen corresponding path program 1 times [2018-09-18 11:27:03,630 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:27:03,631 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:27:03,631 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:27:03,631 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:27:03,631 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:27:03,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:27:04,215 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 9 proven. 68 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2018-09-18 11:27:04,215 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:27:04,215 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:27:04,222 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:27:04,222 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:27:04,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:27:04,321 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:27:04,480 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 11 proven. 66 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2018-09-18 11:27:04,480 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:27:04,950 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2018-09-18 11:27:04,986 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 11:27:04,986 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 11 [2018-09-18 11:27:04,986 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:27:04,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 11:27:04,987 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 11:27:04,988 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2018-09-18 11:27:04,988 INFO L87 Difference]: Start difference. First operand 10536 states and 14575 transitions. Second operand 6 states. [2018-09-18 11:27:08,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:27:08,771 INFO L93 Difference]: Finished difference Result 24713 states and 34955 transitions. [2018-09-18 11:27:08,775 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-18 11:27:08,775 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 337 [2018-09-18 11:27:08,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:27:08,843 INFO L225 Difference]: With dead ends: 24713 [2018-09-18 11:27:08,843 INFO L226 Difference]: Without dead ends: 14372 [2018-09-18 11:27:08,874 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 684 GetRequests, 673 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2018-09-18 11:27:08,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14372 states. [2018-09-18 11:27:09,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14372 to 14372. [2018-09-18 11:27:09,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14372 states. [2018-09-18 11:27:09,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14372 states to 14372 states and 20201 transitions. [2018-09-18 11:27:09,219 INFO L78 Accepts]: Start accepts. Automaton has 14372 states and 20201 transitions. Word has length 337 [2018-09-18 11:27:09,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:27:09,220 INFO L480 AbstractCegarLoop]: Abstraction has 14372 states and 20201 transitions. [2018-09-18 11:27:09,220 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 11:27:09,220 INFO L276 IsEmpty]: Start isEmpty. Operand 14372 states and 20201 transitions. [2018-09-18 11:27:09,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2018-09-18 11:27:09,299 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:27:09,299 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:27:09,300 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:27:09,300 INFO L82 PathProgramCache]: Analyzing trace with hash -730130007, now seen corresponding path program 1 times [2018-09-18 11:27:09,300 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:27:09,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:27:09,301 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:27:09,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:27:09,302 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:27:09,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:27:10,160 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 314 proven. 2 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-09-18 11:27:10,160 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:27:10,160 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:27:10,168 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:27:10,169 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:27:10,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:27:10,294 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:27:10,798 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 314 proven. 2 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-09-18 11:27:10,799 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:27:11,431 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 314 proven. 2 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-09-18 11:27:11,452 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:27:11,453 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:27:11,471 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:27:11,471 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:27:11,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:27:11,752 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:27:11,878 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 314 proven. 2 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-09-18 11:27:11,878 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:27:12,441 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 314 proven. 2 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-09-18 11:27:12,443 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:27:12,443 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-09-18 11:27:12,443 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:27:12,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 11:27:12,444 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 11:27:12,444 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-18 11:27:12,445 INFO L87 Difference]: Start difference. First operand 14372 states and 20201 transitions. Second operand 9 states. [2018-09-18 11:27:17,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:27:17,067 INFO L93 Difference]: Finished difference Result 33517 states and 54643 transitions. [2018-09-18 11:27:17,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-18 11:27:17,067 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 411 [2018-09-18 11:27:17,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:27:17,215 INFO L225 Difference]: With dead ends: 33517 [2018-09-18 11:27:17,216 INFO L226 Difference]: Without dead ends: 19340 [2018-09-18 11:27:17,290 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1664 GetRequests, 1640 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=126, Invalid=254, Unknown=0, NotChecked=0, Total=380 [2018-09-18 11:27:17,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19340 states. [2018-09-18 11:27:17,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19340 to 19181. [2018-09-18 11:27:17,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19181 states. [2018-09-18 11:27:17,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19181 states to 19181 states and 29581 transitions. [2018-09-18 11:27:17,963 INFO L78 Accepts]: Start accepts. Automaton has 19181 states and 29581 transitions. Word has length 411 [2018-09-18 11:27:17,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:27:17,964 INFO L480 AbstractCegarLoop]: Abstraction has 19181 states and 29581 transitions. [2018-09-18 11:27:17,964 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 11:27:17,964 INFO L276 IsEmpty]: Start isEmpty. Operand 19181 states and 29581 transitions. [2018-09-18 11:27:18,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2018-09-18 11:27:18,074 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:27:18,075 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:27:18,075 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:27:18,076 INFO L82 PathProgramCache]: Analyzing trace with hash -1258701310, now seen corresponding path program 1 times [2018-09-18 11:27:18,076 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:27:18,076 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:27:18,077 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:27:18,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:27:18,077 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:27:18,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:27:19,008 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 326 proven. 99 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-09-18 11:27:19,008 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:27:19,008 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:27:19,220 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:27:19,220 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:27:19,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:27:19,351 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:27:19,473 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 331 proven. 2 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2018-09-18 11:27:19,474 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:27:19,694 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 331 proven. 2 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2018-09-18 11:27:19,715 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:27:19,716 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:27:19,732 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:27:19,732 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:27:20,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:27:20,035 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:27:20,343 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 113 proven. 219 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2018-09-18 11:27:20,343 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:27:20,927 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 328 proven. 4 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2018-09-18 11:27:20,930 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:27:20,930 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 7, 8] total 12 [2018-09-18 11:27:20,931 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:27:20,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 11:27:20,932 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 11:27:20,932 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-09-18 11:27:20,932 INFO L87 Difference]: Start difference. First operand 19181 states and 29581 transitions. Second operand 6 states. [2018-09-18 11:27:23,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:27:23,261 INFO L93 Difference]: Finished difference Result 42267 states and 71296 transitions. [2018-09-18 11:27:23,264 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 11:27:23,265 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 428 [2018-09-18 11:27:23,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:27:23,417 INFO L225 Difference]: With dead ends: 42267 [2018-09-18 11:27:23,417 INFO L226 Difference]: Without dead ends: 22229 [2018-09-18 11:27:23,539 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1724 GetRequests, 1701 SyntacticMatches, 10 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2018-09-18 11:27:23,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22229 states. [2018-09-18 11:27:24,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22229 to 20675. [2018-09-18 11:27:24,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20675 states. [2018-09-18 11:27:24,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20675 states to 20675 states and 28732 transitions. [2018-09-18 11:27:24,191 INFO L78 Accepts]: Start accepts. Automaton has 20675 states and 28732 transitions. Word has length 428 [2018-09-18 11:27:24,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:27:24,192 INFO L480 AbstractCegarLoop]: Abstraction has 20675 states and 28732 transitions. [2018-09-18 11:27:24,192 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 11:27:24,192 INFO L276 IsEmpty]: Start isEmpty. Operand 20675 states and 28732 transitions. [2018-09-18 11:27:24,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 539 [2018-09-18 11:27:24,295 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:27:24,296 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:27:24,296 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:27:24,296 INFO L82 PathProgramCache]: Analyzing trace with hash -114462136, now seen corresponding path program 1 times [2018-09-18 11:27:24,297 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:27:24,297 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:27:24,297 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:27:24,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:27:24,298 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:27:24,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:27:25,150 INFO L134 CoverageAnalysis]: Checked inductivity of 808 backedges. 351 proven. 95 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2018-09-18 11:27:25,150 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:27:25,150 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:27:25,167 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:27:25,167 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:27:25,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:27:25,332 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:27:25,638 INFO L134 CoverageAnalysis]: Checked inductivity of 808 backedges. 650 proven. 2 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2018-09-18 11:27:25,638 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:27:26,434 INFO L134 CoverageAnalysis]: Checked inductivity of 808 backedges. 351 proven. 95 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2018-09-18 11:27:26,455 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:27:26,455 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:27:26,470 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:27:26,470 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:27:26,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:27:26,792 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:27:26,959 INFO L134 CoverageAnalysis]: Checked inductivity of 808 backedges. 650 proven. 2 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2018-09-18 11:27:26,959 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:27:27,255 INFO L134 CoverageAnalysis]: Checked inductivity of 808 backedges. 351 proven. 95 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2018-09-18 11:27:27,258 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:27:27,259 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 8 [2018-09-18 11:27:27,259 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:27:27,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-18 11:27:27,261 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-18 11:27:27,261 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-09-18 11:27:27,261 INFO L87 Difference]: Start difference. First operand 20675 states and 28732 transitions. Second operand 7 states. [2018-09-18 11:27:30,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:27:30,522 INFO L93 Difference]: Finished difference Result 47769 states and 69066 transitions. [2018-09-18 11:27:30,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-18 11:27:30,522 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 538 [2018-09-18 11:27:30,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:27:30,676 INFO L225 Difference]: With dead ends: 47769 [2018-09-18 11:27:30,676 INFO L226 Difference]: Without dead ends: 27289 [2018-09-18 11:27:30,803 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2166 GetRequests, 2151 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2018-09-18 11:27:30,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27289 states. [2018-09-18 11:27:31,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27289 to 27070. [2018-09-18 11:27:31,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27070 states. [2018-09-18 11:27:31,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27070 states to 27070 states and 37878 transitions. [2018-09-18 11:27:31,894 INFO L78 Accepts]: Start accepts. Automaton has 27070 states and 37878 transitions. Word has length 538 [2018-09-18 11:27:31,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:27:31,895 INFO L480 AbstractCegarLoop]: Abstraction has 27070 states and 37878 transitions. [2018-09-18 11:27:31,895 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-18 11:27:31,896 INFO L276 IsEmpty]: Start isEmpty. Operand 27070 states and 37878 transitions. [2018-09-18 11:27:32,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 574 [2018-09-18 11:27:32,072 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:27:32,073 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:27:32,073 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:27:32,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1998238136, now seen corresponding path program 1 times [2018-09-18 11:27:32,073 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:27:32,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:27:32,074 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:27:32,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:27:32,075 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:27:32,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:27:33,384 INFO L134 CoverageAnalysis]: Checked inductivity of 797 backedges. 248 proven. 321 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2018-09-18 11:27:33,385 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:27:33,385 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 [2018-09-18 11:27:33,393 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:27:33,393 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:27:33,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:27:33,549 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:27:33,847 INFO L134 CoverageAnalysis]: Checked inductivity of 797 backedges. 643 proven. 2 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2018-09-18 11:27:33,848 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:27:34,127 INFO L134 CoverageAnalysis]: Checked inductivity of 797 backedges. 339 proven. 89 refuted. 0 times theorem prover too weak. 369 trivial. 0 not checked. [2018-09-18 11:27:34,149 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:27:34,149 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 [2018-09-18 11:27:34,165 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:27:34,165 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:27:34,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:27:34,554 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:27:35,079 INFO L134 CoverageAnalysis]: Checked inductivity of 797 backedges. 643 proven. 2 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2018-09-18 11:27:35,080 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:27:35,368 INFO L134 CoverageAnalysis]: Checked inductivity of 797 backedges. 339 proven. 89 refuted. 0 times theorem prover too weak. 369 trivial. 0 not checked. [2018-09-18 11:27:35,371 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:27:35,372 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5, 5, 5] total 14 [2018-09-18 11:27:35,372 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:27:35,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-18 11:27:35,373 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-18 11:27:35,374 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2018-09-18 11:27:35,374 INFO L87 Difference]: Start difference. First operand 27070 states and 37878 transitions. Second operand 10 states. [2018-09-18 11:27:38,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:27:38,560 INFO L93 Difference]: Finished difference Result 61333 states and 85049 transitions. [2018-09-18 11:27:38,561 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-18 11:27:38,561 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 573 [2018-09-18 11:27:38,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:27:38,716 INFO L225 Difference]: With dead ends: 61333 [2018-09-18 11:27:38,716 INFO L226 Difference]: Without dead ends: 34458 [2018-09-18 11:27:38,856 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2312 GetRequests, 2286 SyntacticMatches, 10 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2018-09-18 11:27:38,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34458 states. [2018-09-18 11:27:39,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34458 to 33482. [2018-09-18 11:27:39,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33482 states. [2018-09-18 11:27:39,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33482 states to 33482 states and 44376 transitions. [2018-09-18 11:27:39,725 INFO L78 Accepts]: Start accepts. Automaton has 33482 states and 44376 transitions. Word has length 573 [2018-09-18 11:27:39,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:27:39,726 INFO L480 AbstractCegarLoop]: Abstraction has 33482 states and 44376 transitions. [2018-09-18 11:27:39,726 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-18 11:27:39,726 INFO L276 IsEmpty]: Start isEmpty. Operand 33482 states and 44376 transitions. [2018-09-18 11:27:39,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 579 [2018-09-18 11:27:39,836 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:27:39,836 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:27:39,837 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:27:39,837 INFO L82 PathProgramCache]: Analyzing trace with hash -104800927, now seen corresponding path program 1 times [2018-09-18 11:27:39,837 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:27:39,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:27:39,838 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:27:39,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:27:39,838 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:27:39,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:27:40,826 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-09-18 11:27:41,100 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-09-18 11:27:42,138 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 285 proven. 233 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2018-09-18 11:27:42,139 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:27:42,139 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 [2018-09-18 11:27:42,147 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:27:42,147 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:27:42,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:27:42,317 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:27:42,725 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-09-18 11:27:43,596 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 674 proven. 2 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2018-09-18 11:27:43,597 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:27:44,335 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 285 proven. 233 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2018-09-18 11:27:44,356 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:27:44,356 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 [2018-09-18 11:27:44,375 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:27:44,375 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:27:44,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:27:44,740 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:27:45,131 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 15 [2018-09-18 11:27:49,809 WARN L178 SmtUtils]: Spent 2.07 s on a formula simplification. DAG size of input: 42 DAG size of output: 17 [2018-09-18 11:27:50,353 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 627 proven. 6 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2018-09-18 11:27:50,353 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:27:52,728 WARN L178 SmtUtils]: Spent 2.03 s on a formula simplification. DAG size of input: 39 DAG size of output: 15 [2018-09-18 11:27:53,198 WARN L178 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 24 [2018-09-18 11:27:53,474 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2018-09-18 11:27:54,118 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 627 proven. 107 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2018-09-18 11:27:54,120 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:27:54,121 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7, 8, 7, 8] total 27 [2018-09-18 11:27:54,121 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:27:54,124 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-18 11:27:54,124 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-18 11:27:54,125 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=584, Unknown=1, NotChecked=0, Total=702 [2018-09-18 11:27:54,125 INFO L87 Difference]: Start difference. First operand 33482 states and 44376 transitions. Second operand 15 states. [2018-09-18 11:28:00,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:28:00,155 INFO L93 Difference]: Finished difference Result 65060 states and 85465 transitions. [2018-09-18 11:28:00,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-09-18 11:28:00,155 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 578 [2018-09-18 11:28:00,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:28:00,266 INFO L225 Difference]: With dead ends: 65060 [2018-09-18 11:28:00,266 INFO L226 Difference]: Without dead ends: 31773 [2018-09-18 11:28:00,383 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2360 GetRequests, 2308 SyntacticMatches, 6 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 593 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=437, Invalid=1818, Unknown=1, NotChecked=0, Total=2256 [2018-09-18 11:28:00,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31773 states. [2018-09-18 11:28:00,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31773 to 31042. [2018-09-18 11:28:00,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31042 states. [2018-09-18 11:28:01,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31042 states to 31042 states and 36972 transitions. [2018-09-18 11:28:01,024 INFO L78 Accepts]: Start accepts. Automaton has 31042 states and 36972 transitions. Word has length 578 [2018-09-18 11:28:01,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:28:01,025 INFO L480 AbstractCegarLoop]: Abstraction has 31042 states and 36972 transitions. [2018-09-18 11:28:01,025 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-18 11:28:01,026 INFO L276 IsEmpty]: Start isEmpty. Operand 31042 states and 36972 transitions. [2018-09-18 11:28:01,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 589 [2018-09-18 11:28:01,086 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:28:01,086 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:28:01,087 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:28:01,087 INFO L82 PathProgramCache]: Analyzing trace with hash -1133682667, now seen corresponding path program 1 times [2018-09-18 11:28:01,087 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:28:01,088 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:28:01,088 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:28:01,088 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:28:01,089 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:28:01,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:28:01,851 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-09-18 11:28:02,182 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-09-18 11:28:02,416 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-09-18 11:28:02,906 WARN L178 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2018-09-18 11:28:03,284 WARN L178 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2018-09-18 11:28:03,762 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-09-18 11:28:04,521 INFO L134 CoverageAnalysis]: Checked inductivity of 871 backedges. 507 proven. 361 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-09-18 11:28:04,521 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:28:04,521 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:28:04,529 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:28:04,530 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:28:04,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:28:04,692 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:28:05,193 INFO L134 CoverageAnalysis]: Checked inductivity of 871 backedges. 704 proven. 2 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2018-09-18 11:28:05,193 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:28:05,726 INFO L134 CoverageAnalysis]: Checked inductivity of 871 backedges. 375 proven. 107 refuted. 0 times theorem prover too weak. 389 trivial. 0 not checked. [2018-09-18 11:28:05,747 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:28:05,747 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 17 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:28:05,764 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:28:05,764 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:28:06,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:28:06,148 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:28:06,560 INFO L134 CoverageAnalysis]: Checked inductivity of 871 backedges. 704 proven. 2 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2018-09-18 11:28:06,560 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:28:07,212 INFO L134 CoverageAnalysis]: Checked inductivity of 871 backedges. 375 proven. 107 refuted. 0 times theorem prover too weak. 389 trivial. 0 not checked. [2018-09-18 11:28:07,214 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:28:07,214 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 5, 5, 5, 5] total 25 [2018-09-18 11:28:07,215 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:28:07,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-09-18 11:28:07,217 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-09-18 11:28:07,218 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=512, Unknown=0, NotChecked=0, Total=600 [2018-09-18 11:28:07,218 INFO L87 Difference]: Start difference. First operand 31042 states and 36972 transitions. Second operand 20 states. [2018-09-18 11:28:13,547 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 30 [2018-09-18 11:28:24,997 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 24 [2018-09-18 11:28:28,277 WARN L178 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 33 [2018-09-18 11:28:33,137 WARN L178 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 28 [2018-09-18 11:28:39,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:28:39,083 INFO L93 Difference]: Finished difference Result 73718 states and 94049 transitions. [2018-09-18 11:28:39,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2018-09-18 11:28:39,084 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 588 [2018-09-18 11:28:39,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:28:39,277 INFO L225 Difference]: With dead ends: 73718 [2018-09-18 11:28:39,277 INFO L226 Difference]: Without dead ends: 42871 [2018-09-18 11:28:39,387 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2590 GetRequests, 2437 SyntacticMatches, 3 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8695 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=3711, Invalid=19241, Unknown=0, NotChecked=0, Total=22952 [2018-09-18 11:28:39,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42871 states. [2018-09-18 11:28:40,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42871 to 39814. [2018-09-18 11:28:40,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39814 states. [2018-09-18 11:28:40,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39814 states to 39814 states and 46506 transitions. [2018-09-18 11:28:40,271 INFO L78 Accepts]: Start accepts. Automaton has 39814 states and 46506 transitions. Word has length 588 [2018-09-18 11:28:40,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:28:40,272 INFO L480 AbstractCegarLoop]: Abstraction has 39814 states and 46506 transitions. [2018-09-18 11:28:40,272 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-09-18 11:28:40,272 INFO L276 IsEmpty]: Start isEmpty. Operand 39814 states and 46506 transitions. [2018-09-18 11:28:40,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 691 [2018-09-18 11:28:40,349 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:28:40,350 INFO L376 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:28:40,350 INFO L423 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:28:40,350 INFO L82 PathProgramCache]: Analyzing trace with hash -1092838395, now seen corresponding path program 1 times [2018-09-18 11:28:40,350 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:28:40,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:28:40,351 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:28:40,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:28:40,351 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:28:40,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:28:41,814 INFO L134 CoverageAnalysis]: Checked inductivity of 1309 backedges. 205 proven. 777 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2018-09-18 11:28:41,814 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:28:41,814 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:28:41,821 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:28:41,822 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:28:42,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:28:42,015 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:28:42,287 INFO L134 CoverageAnalysis]: Checked inductivity of 1309 backedges. 760 proven. 2 refuted. 0 times theorem prover too weak. 547 trivial. 0 not checked. [2018-09-18 11:28:42,288 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:28:42,887 INFO L134 CoverageAnalysis]: Checked inductivity of 1309 backedges. 205 proven. 779 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2018-09-18 11:28:42,907 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:28:42,907 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 19 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:28:42,925 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:28:42,925 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:28:43,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:28:43,372 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:28:43,751 INFO L134 CoverageAnalysis]: Checked inductivity of 1309 backedges. 760 proven. 2 refuted. 0 times theorem prover too weak. 547 trivial. 0 not checked. [2018-09-18 11:28:43,751 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:28:44,212 INFO L134 CoverageAnalysis]: Checked inductivity of 1309 backedges. 205 proven. 779 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2018-09-18 11:28:44,214 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:28:44,215 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8, 7, 8] total 16 [2018-09-18 11:28:44,215 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:28:44,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-18 11:28:44,216 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-18 11:28:44,216 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2018-09-18 11:28:44,217 INFO L87 Difference]: Start difference. First operand 39814 states and 46506 transitions. Second operand 10 states. [2018-09-18 11:28:50,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:28:50,072 INFO L93 Difference]: Finished difference Result 114408 states and 140040 transitions. [2018-09-18 11:28:50,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-18 11:28:50,072 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 690 [2018-09-18 11:28:50,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:28:50,306 INFO L225 Difference]: With dead ends: 114408 [2018-09-18 11:28:50,307 INFO L226 Difference]: Without dead ends: 74789 [2018-09-18 11:28:50,431 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2783 GetRequests, 2761 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=167, Invalid=385, Unknown=0, NotChecked=0, Total=552 [2018-09-18 11:28:50,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74789 states. [2018-09-18 11:28:52,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74789 to 73292. [2018-09-18 11:28:52,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73292 states. [2018-09-18 11:28:52,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73292 states to 73292 states and 88524 transitions. [2018-09-18 11:28:52,456 INFO L78 Accepts]: Start accepts. Automaton has 73292 states and 88524 transitions. Word has length 690 [2018-09-18 11:28:52,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:28:52,456 INFO L480 AbstractCegarLoop]: Abstraction has 73292 states and 88524 transitions. [2018-09-18 11:28:52,456 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-18 11:28:52,456 INFO L276 IsEmpty]: Start isEmpty. Operand 73292 states and 88524 transitions. [2018-09-18 11:28:52,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 745 [2018-09-18 11:28:52,653 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:28:52,653 INFO L376 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:28:52,653 INFO L423 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:28:52,654 INFO L82 PathProgramCache]: Analyzing trace with hash -2003083642, now seen corresponding path program 1 times [2018-09-18 11:28:52,654 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:28:52,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:28:52,655 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:28:52,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:28:52,655 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:28:52,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:28:53,320 INFO L134 CoverageAnalysis]: Checked inductivity of 1482 backedges. 594 proven. 144 refuted. 0 times theorem prover too weak. 744 trivial. 0 not checked. [2018-09-18 11:28:53,321 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:28:53,321 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 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:28:53,329 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:28:53,329 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:28:53,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:28:53,533 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:28:53,760 INFO L134 CoverageAnalysis]: Checked inductivity of 1482 backedges. 1076 proven. 2 refuted. 0 times theorem prover too weak. 404 trivial. 0 not checked. [2018-09-18 11:28:53,761 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:28:54,789 INFO L134 CoverageAnalysis]: Checked inductivity of 1482 backedges. 594 proven. 144 refuted. 0 times theorem prover too weak. 744 trivial. 0 not checked. [2018-09-18 11:28:54,829 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:28:54,829 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 21 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 21 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:28:54,854 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:28:54,854 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:28:55,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:28:55,358 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:28:55,629 INFO L134 CoverageAnalysis]: Checked inductivity of 1482 backedges. 1076 proven. 2 refuted. 0 times theorem prover too weak. 404 trivial. 0 not checked. [2018-09-18 11:28:55,629 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:28:55,981 INFO L134 CoverageAnalysis]: Checked inductivity of 1482 backedges. 594 proven. 144 refuted. 0 times theorem prover too weak. 744 trivial. 0 not checked. [2018-09-18 11:28:55,985 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:28:55,985 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5] total 7 [2018-09-18 11:28:55,986 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:28:55,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 11:28:55,987 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 11:28:55,987 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-09-18 11:28:55,987 INFO L87 Difference]: Start difference. First operand 73292 states and 88524 transitions. Second operand 6 states. [2018-09-18 11:29:00,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:29:00,481 INFO L93 Difference]: Finished difference Result 154139 states and 189068 transitions. [2018-09-18 11:29:00,482 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-18 11:29:00,482 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 744 [2018-09-18 11:29:00,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:29:00,720 INFO L225 Difference]: With dead ends: 154139 [2018-09-18 11:29:00,720 INFO L226 Difference]: Without dead ends: 81233 [2018-09-18 11:29:00,875 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2989 GetRequests, 2973 SyntacticMatches, 6 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-09-18 11:29:00,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81233 states. [2018-09-18 11:29:02,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81233 to 80981. [2018-09-18 11:29:02,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80981 states. [2018-09-18 11:29:02,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80981 states to 80981 states and 96160 transitions. [2018-09-18 11:29:02,415 INFO L78 Accepts]: Start accepts. Automaton has 80981 states and 96160 transitions. Word has length 744 [2018-09-18 11:29:02,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:29:02,416 INFO L480 AbstractCegarLoop]: Abstraction has 80981 states and 96160 transitions. [2018-09-18 11:29:02,416 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 11:29:02,416 INFO L276 IsEmpty]: Start isEmpty. Operand 80981 states and 96160 transitions. [2018-09-18 11:29:02,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 825 [2018-09-18 11:29:02,635 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:29:02,636 INFO L376 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:29:02,636 INFO L423 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:29:02,636 INFO L82 PathProgramCache]: Analyzing trace with hash 609720412, now seen corresponding path program 1 times [2018-09-18 11:29:02,636 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:29:02,637 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:29:02,637 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:29:02,637 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:29:02,637 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:29:02,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:29:03,789 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-09-18 11:29:04,053 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-09-18 11:29:05,316 INFO L134 CoverageAnalysis]: Checked inductivity of 1994 backedges. 495 proven. 815 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2018-09-18 11:29:05,316 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:29:05,316 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 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:29:05,324 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:29:05,324 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:29:05,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:29:05,555 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:29:05,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1994 backedges. 1405 proven. 2 refuted. 0 times theorem prover too weak. 587 trivial. 0 not checked. [2018-09-18 11:29:05,847 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:29:06,752 INFO L134 CoverageAnalysis]: Checked inductivity of 1994 backedges. 541 proven. 186 refuted. 0 times theorem prover too weak. 1267 trivial. 0 not checked. [2018-09-18 11:29:06,773 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:29:06,773 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 23 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 23 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:29:06,787 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:29:06,788 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:29:07,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:29:07,314 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:29:07,730 INFO L134 CoverageAnalysis]: Checked inductivity of 1994 backedges. 1405 proven. 2 refuted. 0 times theorem prover too weak. 587 trivial. 0 not checked. [2018-09-18 11:29:07,730 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:29:09,182 INFO L134 CoverageAnalysis]: Checked inductivity of 1994 backedges. 541 proven. 186 refuted. 0 times theorem prover too weak. 1267 trivial. 0 not checked. [2018-09-18 11:29:09,184 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:29:09,185 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5, 5, 5] total 23 [2018-09-18 11:29:09,185 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:29:09,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-09-18 11:29:09,187 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-09-18 11:29:09,187 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2018-09-18 11:29:09,187 INFO L87 Difference]: Start difference. First operand 80981 states and 96160 transitions. Second operand 16 states. [2018-09-18 11:29:27,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:29:27,332 INFO L93 Difference]: Finished difference Result 172877 states and 206950 transitions. [2018-09-18 11:29:27,333 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-09-18 11:29:27,333 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 824 [2018-09-18 11:29:27,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:29:27,574 INFO L225 Difference]: With dead ends: 172877 [2018-09-18 11:29:27,574 INFO L226 Difference]: Without dead ends: 88382 [2018-09-18 11:29:27,740 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3427 GetRequests, 3340 SyntacticMatches, 1 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2454 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=1424, Invalid=6232, Unknown=0, NotChecked=0, Total=7656 [2018-09-18 11:29:27,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88382 states. [2018-09-18 11:29:28,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88382 to 86071. [2018-09-18 11:29:28,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86071 states. [2018-09-18 11:29:29,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86071 states to 86071 states and 99066 transitions. [2018-09-18 11:29:29,115 INFO L78 Accepts]: Start accepts. Automaton has 86071 states and 99066 transitions. Word has length 824 [2018-09-18 11:29:29,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:29:29,116 INFO L480 AbstractCegarLoop]: Abstraction has 86071 states and 99066 transitions. [2018-09-18 11:29:29,116 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-09-18 11:29:29,116 INFO L276 IsEmpty]: Start isEmpty. Operand 86071 states and 99066 transitions. [2018-09-18 11:29:29,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 947 [2018-09-18 11:29:29,314 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:29:29,314 INFO L376 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:29:29,315 INFO L423 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:29:29,315 INFO L82 PathProgramCache]: Analyzing trace with hash 309742328, now seen corresponding path program 1 times [2018-09-18 11:29:29,315 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:29:29,316 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:29:29,316 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:29:29,316 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:29:29,316 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:29:29,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:29:33,341 INFO L134 CoverageAnalysis]: Checked inductivity of 2525 backedges. 802 proven. 971 refuted. 0 times theorem prover too weak. 752 trivial. 0 not checked. [2018-09-18 11:29:33,341 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:29:33,341 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 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:29:33,352 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:29:33,352 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:29:33,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:29:33,613 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:29:34,118 INFO L134 CoverageAnalysis]: Checked inductivity of 2525 backedges. 1707 proven. 2 refuted. 0 times theorem prover too weak. 816 trivial. 0 not checked. [2018-09-18 11:29:34,118 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:29:34,314 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 37 [2018-09-18 11:29:35,607 INFO L134 CoverageAnalysis]: Checked inductivity of 2525 backedges. 669 proven. 186 refuted. 0 times theorem prover too weak. 1670 trivial. 0 not checked. [2018-09-18 11:29:35,628 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:29:35,628 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 25 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 25 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:29:35,645 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:29:35,645 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:29:36,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:29:36,246 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:29:36,752 INFO L134 CoverageAnalysis]: Checked inductivity of 2525 backedges. 1657 proven. 2 refuted. 0 times theorem prover too weak. 866 trivial. 0 not checked. [2018-09-18 11:29:36,752 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:29:38,145 INFO L134 CoverageAnalysis]: Checked inductivity of 2525 backedges. 522 proven. 385 refuted. 0 times theorem prover too weak. 1618 trivial. 0 not checked. [2018-09-18 11:29:38,148 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:29:38,148 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 5, 5, 5, 5] total 32 [2018-09-18 11:29:38,149 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:29:38,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-09-18 11:29:38,150 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-09-18 11:29:38,151 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=876, Unknown=0, NotChecked=0, Total=992 [2018-09-18 11:29:38,151 INFO L87 Difference]: Start difference. First operand 86071 states and 99066 transitions. Second operand 26 states. [2018-09-18 11:29:39,613 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2018-09-18 11:29:41,030 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 35 [2018-09-18 11:29:50,105 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 35 [2018-09-18 11:29:51,080 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 29 [2018-09-18 11:29:51,468 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2018-09-18 11:29:52,016 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 47 [2018-09-18 11:29:53,438 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2018-09-18 11:29:54,730 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 51 [2018-09-18 11:29:55,362 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2018-09-18 11:29:55,579 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 20 [2018-09-18 11:29:55,786 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 37 [2018-09-18 11:29:56,171 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 25 [2018-09-18 11:29:56,437 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 37 [2018-09-18 11:29:57,560 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 47 [2018-09-18 11:29:59,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:29:59,499 INFO L93 Difference]: Finished difference Result 171882 states and 201602 transitions. [2018-09-18 11:29:59,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-09-18 11:29:59,500 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 946 [2018-09-18 11:29:59,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:29:59,728 INFO L225 Difference]: With dead ends: 171882 [2018-09-18 11:29:59,728 INFO L226 Difference]: Without dead ends: 60649 [2018-09-18 11:29:59,993 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3992 GetRequests, 3851 SyntacticMatches, 7 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6213 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=3038, Invalid=15322, Unknown=0, NotChecked=0, Total=18360 [2018-09-18 11:30:00,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60649 states. [2018-09-18 11:30:00,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60649 to 49944. [2018-09-18 11:30:00,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49944 states. [2018-09-18 11:30:00,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49944 states to 49944 states and 55707 transitions. [2018-09-18 11:30:00,877 INFO L78 Accepts]: Start accepts. Automaton has 49944 states and 55707 transitions. Word has length 946 [2018-09-18 11:30:00,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:30:00,878 INFO L480 AbstractCegarLoop]: Abstraction has 49944 states and 55707 transitions. [2018-09-18 11:30:00,878 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-09-18 11:30:00,878 INFO L276 IsEmpty]: Start isEmpty. Operand 49944 states and 55707 transitions. [2018-09-18 11:30:00,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 981 [2018-09-18 11:30:00,938 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:30:00,939 INFO L376 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:30:00,939 INFO L423 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:30:00,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1798867708, now seen corresponding path program 1 times [2018-09-18 11:30:00,940 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:30:00,940 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:30:00,940 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:30:00,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:30:00,941 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:30:01,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:30:02,562 INFO L134 CoverageAnalysis]: Checked inductivity of 3068 backedges. 943 proven. 791 refuted. 0 times theorem prover too weak. 1334 trivial. 0 not checked. [2018-09-18 11:30:02,563 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:30:02,563 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 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:30:02,570 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:30:02,570 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:30:02,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:30:02,850 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:30:03,287 INFO L134 CoverageAnalysis]: Checked inductivity of 3068 backedges. 2280 proven. 6 refuted. 0 times theorem prover too weak. 782 trivial. 0 not checked. [2018-09-18 11:30:03,288 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:30:03,729 WARN L178 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 9 Received shutdown request... [2018-09-18 11:30:04,493 INFO L134 CoverageAnalysis]: Checked inductivity of 3068 backedges. 943 proven. 793 refuted. 0 times theorem prover too weak. 1332 trivial. 0 not checked. [2018-09-18 11:30:04,515 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:30:04,515 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 27 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 27 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:30:04,530 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:30:04,530 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:30:05,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:30:05,162 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:30:05,165 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-09-18 11:30:05,366 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:30:05,367 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-18 11:30:05,372 WARN L206 ceAbstractionStarter]: Timeout [2018-09-18 11:30:05,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 11:30:05 BoogieIcfgContainer [2018-09-18 11:30:05,372 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-18 11:30:05,373 INFO L168 Benchmark]: Toolchain (without parser) took 222023.05 ms. Allocated memory was 1.5 GB in the beginning and 3.8 GB in the end (delta: 2.3 GB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -216.0 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-09-18 11:30:05,374 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. [2018-09-18 11:30:05,374 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1001.27 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: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. [2018-09-18 11:30:05,375 INFO L168 Benchmark]: Boogie Procedure Inliner took 159.85 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-09-18 11:30:05,375 INFO L168 Benchmark]: Boogie Preprocessor took 326.19 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 812.1 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -928.5 MB). Peak memory consumption was 49.4 MB. Max. memory is 7.1 GB. [2018-09-18 11:30:05,376 INFO L168 Benchmark]: RCFGBuilder took 4761.49 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.1 GB in the end (delta: 198.9 MB). Peak memory consumption was 198.9 MB. Max. memory is 7.1 GB. [2018-09-18 11:30:05,377 INFO L168 Benchmark]: TraceAbstraction took 215764.29 ms. Allocated memory was 2.3 GB in the beginning and 3.8 GB in the end (delta: 1.5 GB). Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 429.1 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-09-18 11:30:05,381 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 1001.27 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: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 159.85 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 326.19 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 812.1 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -928.5 MB). Peak memory consumption was 49.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 4761.49 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.1 GB in the end (delta: 198.9 MB). Peak memory consumption was 198.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 215764.29 ms. Allocated memory was 2.3 GB in the beginning and 3.8 GB in the end (delta: 1.5 GB). Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 429.1 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 117]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 117). Cancelled while BasicCegarLoop was analyzing trace of length 981 with TraceHistMax 9, while TraceCheckSpWp was constructing forward predicates, while XnfDer was eliminating 1 quantified variables from 3 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 215.6s OverallTime, 18 OverallIterations, 9 TraceHistogramMax, 133.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2740 SDtfs, 34918 SDslu, 5155 SDs, 0 SdLazy, 61545 SolverSat, 13675 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 83.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27977 GetRequests, 27362 SyntacticMatches, 62 SemanticMatches, 553 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 18403 ImplicationChecksByTransitivity, 46.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=86071occurred in iteration=16, 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: 11.9s AutomataMinimizationTime, 17 MinimizatonAttempts, 22434 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.8s SsaConstructionTime, 6.3s SatisfiabilityAnalysisTime, 49.1s InterpolantComputationTime, 21295 NumberOfCodeBlocks, 21295 NumberOfCodeBlocksAsserted, 41 NumberOfCheckSat, 34825 ConstructedInterpolants, 126 QuantifiedInterpolants, 79940768 SizeOfPredicates, 42 NumberOfNonLiveVariables, 20589 ConjunctsInSsa, 201 ConjunctsInUnsatCore, 65 InterpolantComputations, 7 PerfectInterpolantSequences, 50956/59246 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem11_label54_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-18_11-30-05-393.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem11_label54_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-18_11-30-05-393.csv Completed graceful shutdown