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/Problem14_label17_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-18 11:48:37,418 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-18 11:48:37,420 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-18 11:48:37,436 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-18 11:48:37,436 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-18 11:48:37,437 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-18 11:48:37,438 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-18 11:48:37,440 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-18 11:48:37,442 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-18 11:48:37,443 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-18 11:48:37,444 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-18 11:48:37,444 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-18 11:48:37,445 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-18 11:48:37,446 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-18 11:48:37,447 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-18 11:48:37,448 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-18 11:48:37,448 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-18 11:48:37,450 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-18 11:48:37,454 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-18 11:48:37,456 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-18 11:48:37,458 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-18 11:48:37,459 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-18 11:48:37,464 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-18 11:48:37,464 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-18 11:48:37,464 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-18 11:48:37,467 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-18 11:48:37,469 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-18 11:48:37,469 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-18 11:48:37,470 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-18 11:48:37,474 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-18 11:48:37,474 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-18 11:48:37,475 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-18 11:48:37,475 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-18 11:48:37,476 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-18 11:48:37,477 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-18 11:48:37,479 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-18 11:48:37,480 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 11:48:37,501 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-18 11:48:37,502 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-18 11:48:37,502 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-18 11:48:37,503 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-18 11:48:37,503 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-18 11:48:37,503 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-18 11:48:37,503 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-18 11:48:37,503 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-18 11:48:37,504 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-18 11:48:37,504 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-18 11:48:37,504 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-18 11:48:37,504 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-18 11:48:37,505 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-18 11:48:37,505 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-18 11:48:37,505 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-18 11:48:37,505 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-18 11:48:37,506 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-18 11:48:37,506 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-18 11:48:37,506 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-18 11:48:37,506 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-18 11:48:37,506 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-18 11:48:37,507 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-18 11:48:37,507 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-18 11:48:37,507 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-18 11:48:37,507 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 11:48:37,507 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-18 11:48:37,508 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-18 11:48:37,508 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-18 11:48:37,508 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-18 11:48:37,508 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-18 11:48:37,508 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-18 11:48:37,508 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-18 11:48:37,509 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-18 11:48:37,509 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-18 11:48:37,555 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-18 11:48:37,570 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-18 11:48:37,576 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-18 11:48:37,577 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-18 11:48:37,578 INFO L276 PluginConnector]: CDTParser initialized [2018-09-18 11:48:37,579 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label17_true-unreach-call_false-termination.c [2018-09-18 11:48:37,911 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd8e321e4/a82b8f845a4f4a8e9ba5243611402ba3/FLAGaecaaa230 [2018-09-18 11:48:38,174 INFO L277 CDTParser]: Found 1 translation units. [2018-09-18 11:48:38,175 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label17_true-unreach-call_false-termination.c [2018-09-18 11:48:38,189 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd8e321e4/a82b8f845a4f4a8e9ba5243611402ba3/FLAGaecaaa230 [2018-09-18 11:48:38,207 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd8e321e4/a82b8f845a4f4a8e9ba5243611402ba3 [2018-09-18 11:48:38,218 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-18 11:48:38,221 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-18 11:48:38,223 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-18 11:48:38,223 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-18 11:48:38,231 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-18 11:48:38,232 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 11:48:38" (1/1) ... [2018-09-18 11:48:38,235 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dc8f34b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:48:38, skipping insertion in model container [2018-09-18 11:48:38,236 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 11:48:38" (1/1) ... [2018-09-18 11:48:38,248 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-18 11:48:38,883 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 11:48:38,900 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-18 11:48:39,040 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 11:48:39,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:48:39 WrapperNode [2018-09-18 11:48:39,096 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-18 11:48:39,097 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-18 11:48:39,097 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-18 11:48:39,097 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-18 11:48:39,108 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:48:39" (1/1) ... [2018-09-18 11:48:39,138 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:48:39" (1/1) ... [2018-09-18 11:48:39,218 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-18 11:48:39,219 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-18 11:48:39,219 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-18 11:48:39,219 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-18 11:48:39,397 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:48:39" (1/1) ... [2018-09-18 11:48:39,397 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:48:39" (1/1) ... [2018-09-18 11:48:39,410 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:48:39" (1/1) ... [2018-09-18 11:48:39,410 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:48:39" (1/1) ... [2018-09-18 11:48:39,460 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:48:39" (1/1) ... [2018-09-18 11:48:39,488 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:48:39" (1/1) ... [2018-09-18 11:48:39,504 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:48:39" (1/1) ... [2018-09-18 11:48:39,518 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-18 11:48:39,519 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-18 11:48:39,519 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-18 11:48:39,519 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-18 11:48:39,520 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:48:39" (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 11:48:39,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-18 11:48:39,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-18 11:48:39,599 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-18 11:48:39,599 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-18 11:48:39,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-18 11:48:39,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-18 11:48:39,600 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-18 11:48:39,601 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-18 11:48:43,531 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-18 11:48:43,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 11:48:43 BoogieIcfgContainer [2018-09-18 11:48:43,532 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-18 11:48:43,534 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-18 11:48:43,534 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-18 11:48:43,540 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-18 11:48:43,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 11:48:38" (1/3) ... [2018-09-18 11:48:43,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d29007a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 11:48:43, skipping insertion in model container [2018-09-18 11:48:43,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:48:39" (2/3) ... [2018-09-18 11:48:43,543 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d29007a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 11:48:43, skipping insertion in model container [2018-09-18 11:48:43,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 11:48:43" (3/3) ... [2018-09-18 11:48:43,546 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label17_true-unreach-call_false-termination.c [2018-09-18 11:48:43,557 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-18 11:48:43,567 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-18 11:48:43,630 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-18 11:48:43,631 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-18 11:48:43,631 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-18 11:48:43,631 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-18 11:48:43,631 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-18 11:48:43,631 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-18 11:48:43,632 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-18 11:48:43,632 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-18 11:48:43,632 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-18 11:48:43,660 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-09-18 11:48:43,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-09-18 11:48:43,671 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:48:43,673 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:48:43,674 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:48:43,680 INFO L82 PathProgramCache]: Analyzing trace with hash -1535437935, now seen corresponding path program 1 times [2018-09-18 11:48:43,683 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:48:43,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:48:43,738 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:48:43,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:48:43,738 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:48:43,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:48:44,173 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 11:48:44,276 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 11:48:44,279 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:48:44,279 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-18 11:48:44,280 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:48:44,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 11:48:44,307 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 11:48:44,308 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 11:48:44,311 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-09-18 11:48:46,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:48:46,194 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-09-18 11:48:46,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 11:48:46,198 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 63 [2018-09-18 11:48:46,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:48:46,219 INFO L225 Difference]: With dead ends: 691 [2018-09-18 11:48:46,220 INFO L226 Difference]: Without dead ends: 434 [2018-09-18 11:48:46,228 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 11:48:46,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-09-18 11:48:46,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-09-18 11:48:46,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-09-18 11:48:46,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 755 transitions. [2018-09-18 11:48:46,309 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 755 transitions. Word has length 63 [2018-09-18 11:48:46,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:48:46,310 INFO L480 AbstractCegarLoop]: Abstraction has 434 states and 755 transitions. [2018-09-18 11:48:46,311 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 11:48:46,311 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 755 transitions. [2018-09-18 11:48:46,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-09-18 11:48:46,320 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:48:46,320 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 11:48:46,321 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:48:46,321 INFO L82 PathProgramCache]: Analyzing trace with hash 1025550080, now seen corresponding path program 1 times [2018-09-18 11:48:46,321 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:48:46,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:48:46,323 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:48:46,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:48:46,323 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:48:46,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:48:46,644 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:48:46,645 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:48:46,645 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 11:48:46,645 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:48:46,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 11:48:46,648 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 11:48:46,648 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 11:48:46,648 INFO L87 Difference]: Start difference. First operand 434 states and 755 transitions. Second operand 6 states. [2018-09-18 11:48:49,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:48:49,097 INFO L93 Difference]: Finished difference Result 1254 states and 2256 transitions. [2018-09-18 11:48:49,099 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 11:48:49,099 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 143 [2018-09-18 11:48:49,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:48:49,115 INFO L225 Difference]: With dead ends: 1254 [2018-09-18 11:48:49,115 INFO L226 Difference]: Without dead ends: 826 [2018-09-18 11:48:49,120 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-18 11:48:49,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2018-09-18 11:48:49,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 812. [2018-09-18 11:48:49,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 812 states. [2018-09-18 11:48:49,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 1377 transitions. [2018-09-18 11:48:49,189 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 1377 transitions. Word has length 143 [2018-09-18 11:48:49,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:48:49,189 INFO L480 AbstractCegarLoop]: Abstraction has 812 states and 1377 transitions. [2018-09-18 11:48:49,190 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 11:48:49,190 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 1377 transitions. [2018-09-18 11:48:49,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-09-18 11:48:49,195 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:48:49,196 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 11:48:49,196 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:48:49,196 INFO L82 PathProgramCache]: Analyzing trace with hash -1017512645, now seen corresponding path program 1 times [2018-09-18 11:48:49,197 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:48:49,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:48:49,198 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:48:49,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:48:49,199 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:48:49,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:48:49,502 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:48:49,503 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:48:49,503 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-18 11:48:49,503 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:48:49,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-18 11:48:49,505 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-18 11:48:49,505 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 11:48:49,505 INFO L87 Difference]: Start difference. First operand 812 states and 1377 transitions. Second operand 4 states. [2018-09-18 11:48:52,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:48:52,728 INFO L93 Difference]: Finished difference Result 1988 states and 3388 transitions. [2018-09-18 11:48:52,729 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-18 11:48:52,729 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 176 [2018-09-18 11:48:52,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:48:52,739 INFO L225 Difference]: With dead ends: 1988 [2018-09-18 11:48:52,740 INFO L226 Difference]: Without dead ends: 1182 [2018-09-18 11:48:52,746 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 11:48:52,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1182 states. [2018-09-18 11:48:52,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1182 to 1182. [2018-09-18 11:48:52,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1182 states. [2018-09-18 11:48:52,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1182 states to 1182 states and 1751 transitions. [2018-09-18 11:48:52,789 INFO L78 Accepts]: Start accepts. Automaton has 1182 states and 1751 transitions. Word has length 176 [2018-09-18 11:48:52,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:48:52,790 INFO L480 AbstractCegarLoop]: Abstraction has 1182 states and 1751 transitions. [2018-09-18 11:48:52,790 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-18 11:48:52,790 INFO L276 IsEmpty]: Start isEmpty. Operand 1182 states and 1751 transitions. [2018-09-18 11:48:52,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2018-09-18 11:48:52,796 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:48:52,797 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 11:48:52,797 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:48:52,797 INFO L82 PathProgramCache]: Analyzing trace with hash -234886452, now seen corresponding path program 1 times [2018-09-18 11:48:52,798 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:48:52,799 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:48:52,799 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:48:52,799 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:48:52,799 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:48:52,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:48:53,338 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:48:53,338 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:48:53,338 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 11:48:53,338 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:48:53,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 11:48:53,339 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 11:48:53,340 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-18 11:48:53,340 INFO L87 Difference]: Start difference. First operand 1182 states and 1751 transitions. Second operand 6 states. [2018-09-18 11:48:58,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:48:58,888 INFO L93 Difference]: Finished difference Result 3828 states and 5913 transitions. [2018-09-18 11:48:58,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-18 11:48:58,890 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 229 [2018-09-18 11:48:58,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:48:58,913 INFO L225 Difference]: With dead ends: 3828 [2018-09-18 11:48:58,914 INFO L226 Difference]: Without dead ends: 2652 [2018-09-18 11:48:58,926 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-09-18 11:48:58,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2652 states. [2018-09-18 11:48:59,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2652 to 2568. [2018-09-18 11:48:59,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2568 states. [2018-09-18 11:48:59,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2568 states to 2568 states and 3547 transitions. [2018-09-18 11:48:59,018 INFO L78 Accepts]: Start accepts. Automaton has 2568 states and 3547 transitions. Word has length 229 [2018-09-18 11:48:59,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:48:59,018 INFO L480 AbstractCegarLoop]: Abstraction has 2568 states and 3547 transitions. [2018-09-18 11:48:59,019 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 11:48:59,019 INFO L276 IsEmpty]: Start isEmpty. Operand 2568 states and 3547 transitions. [2018-09-18 11:48:59,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2018-09-18 11:48:59,036 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:48:59,036 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 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] [2018-09-18 11:48:59,037 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:48:59,037 INFO L82 PathProgramCache]: Analyzing trace with hash 96321352, now seen corresponding path program 1 times [2018-09-18 11:48:59,038 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:48:59,039 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:48:59,039 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:48:59,039 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:48:59,040 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:48:59,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:48:59,606 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-09-18 11:48:59,814 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-09-18 11:49:00,056 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-09-18 11:49:00,578 WARN L178 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2018-09-18 11:49:00,988 WARN L178 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2018-09-18 11:49:01,687 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 256 proven. 190 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 11:49:01,687 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:49:01,687 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 11:49:01,696 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:49:01,696 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:49:01,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:49:01,846 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:49:02,507 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 341 proven. 53 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2018-09-18 11:49:02,507 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:49:02,654 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-09-18 11:49:02,779 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-09-18 11:49:03,139 WARN L178 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2018-09-18 11:49:03,408 WARN L178 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2018-09-18 11:49:04,103 WARN L178 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2018-09-18 11:49:04,932 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 178 proven. 268 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 11:49:04,955 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:49:04,955 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:49:04,973 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:49:04,973 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:49:05,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:49:05,231 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:49:05,776 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 341 proven. 53 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2018-09-18 11:49:05,776 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:49:05,900 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-09-18 11:49:06,589 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 178 proven. 268 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 11:49:06,592 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:49:06,593 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8, 8, 8] total 26 [2018-09-18 11:49:06,593 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:49:06,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-18 11:49:06,595 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-18 11:49:06,596 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=498, Unknown=0, NotChecked=0, Total=650 [2018-09-18 11:49:06,596 INFO L87 Difference]: Start difference. First operand 2568 states and 3547 transitions. Second operand 15 states. [2018-09-18 11:49:15,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:49:15,693 INFO L93 Difference]: Finished difference Result 6362 states and 8966 transitions. [2018-09-18 11:49:15,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-09-18 11:49:15,694 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 413 [2018-09-18 11:49:15,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:49:15,715 INFO L225 Difference]: With dead ends: 6362 [2018-09-18 11:49:15,715 INFO L226 Difference]: Without dead ends: 3601 [2018-09-18 11:49:15,730 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1695 GetRequests, 1651 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=415, Invalid=1307, Unknown=0, NotChecked=0, Total=1722 [2018-09-18 11:49:15,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3601 states. [2018-09-18 11:49:15,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3601 to 3210. [2018-09-18 11:49:15,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3210 states. [2018-09-18 11:49:15,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3210 states to 3210 states and 4020 transitions. [2018-09-18 11:49:15,822 INFO L78 Accepts]: Start accepts. Automaton has 3210 states and 4020 transitions. Word has length 413 [2018-09-18 11:49:15,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:49:15,822 INFO L480 AbstractCegarLoop]: Abstraction has 3210 states and 4020 transitions. [2018-09-18 11:49:15,822 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-18 11:49:15,823 INFO L276 IsEmpty]: Start isEmpty. Operand 3210 states and 4020 transitions. [2018-09-18 11:49:15,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2018-09-18 11:49:15,838 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:49:15,839 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-09-18 11:49:15,839 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:49:15,840 INFO L82 PathProgramCache]: Analyzing trace with hash -905676593, now seen corresponding path program 1 times [2018-09-18 11:49:15,840 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:49:15,841 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:49:15,841 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:49:15,841 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:49:15,841 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:49:15,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:49:16,455 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 11:49:17,333 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-09-18 11:49:17,587 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-09-18 11:49:18,527 INFO L134 CoverageAnalysis]: Checked inductivity of 501 backedges. 264 proven. 237 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:49:18,528 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:49:18,528 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 11:49:18,538 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:49:18,538 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:49:18,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:49:18,655 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:49:18,986 INFO L134 CoverageAnalysis]: Checked inductivity of 501 backedges. 274 proven. 0 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2018-09-18 11:49:18,987 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:49:19,345 INFO L134 CoverageAnalysis]: Checked inductivity of 501 backedges. 168 proven. 210 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2018-09-18 11:49:19,368 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 11:49:19,368 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [19, 5] total 23 [2018-09-18 11:49:19,368 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:49:19,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:49:19,371 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:49:19,371 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=428, Unknown=0, NotChecked=0, Total=506 [2018-09-18 11:49:19,373 INFO L87 Difference]: Start difference. First operand 3210 states and 4020 transitions. Second operand 5 states. [2018-09-18 11:49:21,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:49:21,795 INFO L93 Difference]: Finished difference Result 10629 states and 13331 transitions. [2018-09-18 11:49:21,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-18 11:49:21,799 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 438 [2018-09-18 11:49:21,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:49:21,840 INFO L225 Difference]: With dead ends: 10629 [2018-09-18 11:49:21,840 INFO L226 Difference]: Without dead ends: 7425 [2018-09-18 11:49:21,860 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 898 GetRequests, 870 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=96, Invalid=554, Unknown=0, NotChecked=0, Total=650 [2018-09-18 11:49:21,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7425 states. [2018-09-18 11:49:22,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7425 to 7305. [2018-09-18 11:49:22,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7305 states. [2018-09-18 11:49:22,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7305 states to 7305 states and 8870 transitions. [2018-09-18 11:49:22,049 INFO L78 Accepts]: Start accepts. Automaton has 7305 states and 8870 transitions. Word has length 438 [2018-09-18 11:49:22,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:49:22,049 INFO L480 AbstractCegarLoop]: Abstraction has 7305 states and 8870 transitions. [2018-09-18 11:49:22,050 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 11:49:22,050 INFO L276 IsEmpty]: Start isEmpty. Operand 7305 states and 8870 transitions. [2018-09-18 11:49:22,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 550 [2018-09-18 11:49:22,088 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:49:22,088 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, 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, 3, 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] [2018-09-18 11:49:22,088 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:49:22,089 INFO L82 PathProgramCache]: Analyzing trace with hash 1393559433, now seen corresponding path program 1 times [2018-09-18 11:49:22,089 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:49:22,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:49:22,090 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:49:22,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:49:22,091 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:49:22,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:49:22,948 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 456 proven. 112 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2018-09-18 11:49:22,948 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:49:22,949 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 11:49:22,960 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:49:22,961 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:49:23,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:49:23,092 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:49:23,454 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 723 proven. 2 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2018-09-18 11:49:23,454 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:49:23,790 WARN L178 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-09-18 11:49:24,048 WARN L178 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-09-18 11:49:24,328 WARN L178 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 31 [2018-09-18 11:49:25,070 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 456 proven. 112 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2018-09-18 11:49:25,090 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:49:25,090 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 6 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 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:49:25,107 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:49:25,107 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:49:25,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:49:25,411 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:49:25,595 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 719 proven. 6 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2018-09-18 11:49:25,596 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:49:26,290 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 456 proven. 112 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2018-09-18 11:49:26,292 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:49:26,292 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5, 5, 5] total 8 [2018-09-18 11:49:26,293 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:49:26,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-18 11:49:26,294 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-18 11:49:26,294 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-09-18 11:49:26,294 INFO L87 Difference]: Start difference. First operand 7305 states and 8870 transitions. Second operand 7 states. [2018-09-18 11:49:29,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:49:29,342 INFO L93 Difference]: Finished difference Result 17860 states and 22038 transitions. [2018-09-18 11:49:29,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-18 11:49:29,343 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 549 [2018-09-18 11:49:29,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:49:29,397 INFO L225 Difference]: With dead ends: 17860 [2018-09-18 11:49:29,397 INFO L226 Difference]: Without dead ends: 10561 [2018-09-18 11:49:29,439 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2215 GetRequests, 2193 SyntacticMatches, 11 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2018-09-18 11:49:29,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10561 states. [2018-09-18 11:49:29,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10561 to 10378. [2018-09-18 11:49:29,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10378 states. [2018-09-18 11:49:29,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10378 states to 10378 states and 11971 transitions. [2018-09-18 11:49:29,668 INFO L78 Accepts]: Start accepts. Automaton has 10378 states and 11971 transitions. Word has length 549 [2018-09-18 11:49:29,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:49:29,669 INFO L480 AbstractCegarLoop]: Abstraction has 10378 states and 11971 transitions. [2018-09-18 11:49:29,669 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-18 11:49:29,669 INFO L276 IsEmpty]: Start isEmpty. Operand 10378 states and 11971 transitions. [2018-09-18 11:49:29,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 635 [2018-09-18 11:49:29,719 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:49:29,720 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, 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, 4, 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, 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] [2018-09-18 11:49:29,720 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:49:29,720 INFO L82 PathProgramCache]: Analyzing trace with hash -1764234279, now seen corresponding path program 1 times [2018-09-18 11:49:29,720 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:49:29,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:49:29,721 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:49:29,722 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:49:29,722 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:49:29,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:49:30,379 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-09-18 11:49:30,594 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-09-18 11:49:30,824 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-09-18 11:49:31,319 WARN L178 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2018-09-18 11:49:31,612 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2018-09-18 11:49:32,432 INFO L134 CoverageAnalysis]: Checked inductivity of 1285 backedges. 611 proven. 482 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2018-09-18 11:49:32,433 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:49:32,433 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:49:32,440 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:49:32,441 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:49:32,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:49:32,601 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:49:33,236 INFO L134 CoverageAnalysis]: Checked inductivity of 1285 backedges. 952 proven. 2 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2018-09-18 11:49:33,236 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:49:34,102 INFO L134 CoverageAnalysis]: Checked inductivity of 1285 backedges. 605 proven. 112 refuted. 0 times theorem prover too weak. 568 trivial. 0 not checked. [2018-09-18 11:49:34,124 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:49:34,125 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 8 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 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:49:34,141 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:49:34,142 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:49:34,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:49:34,507 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:49:35,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1285 backedges. 744 proven. 210 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2018-09-18 11:49:35,041 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:49:35,257 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-09-18 11:49:35,362 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-09-18 11:49:36,111 INFO L134 CoverageAnalysis]: Checked inductivity of 1285 backedges. 316 proven. 690 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2018-09-18 11:49:36,114 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:49:36,114 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 5, 8, 8] total 16 [2018-09-18 11:49:36,114 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:49:36,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-18 11:49:36,116 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-18 11:49:36,116 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2018-09-18 11:49:36,116 INFO L87 Difference]: Start difference. First operand 10378 states and 11971 transitions. Second operand 13 states. [2018-09-18 11:49:39,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:49:39,619 INFO L93 Difference]: Finished difference Result 21166 states and 24879 transitions. [2018-09-18 11:49:39,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-18 11:49:39,620 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 634 [2018-09-18 11:49:39,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:49:39,655 INFO L225 Difference]: With dead ends: 21166 [2018-09-18 11:49:39,655 INFO L226 Difference]: Without dead ends: 10593 [2018-09-18 11:49:39,672 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2564 GetRequests, 2526 SyntacticMatches, 15 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=171, Invalid=429, Unknown=0, NotChecked=0, Total=600 [2018-09-18 11:49:39,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10593 states. [2018-09-18 11:49:39,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10593 to 9800. [2018-09-18 11:49:39,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9800 states. [2018-09-18 11:49:39,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9800 states to 9800 states and 11127 transitions. [2018-09-18 11:49:39,878 INFO L78 Accepts]: Start accepts. Automaton has 9800 states and 11127 transitions. Word has length 634 [2018-09-18 11:49:39,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:49:39,879 INFO L480 AbstractCegarLoop]: Abstraction has 9800 states and 11127 transitions. [2018-09-18 11:49:39,879 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-18 11:49:39,880 INFO L276 IsEmpty]: Start isEmpty. Operand 9800 states and 11127 transitions. [2018-09-18 11:49:39,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 661 [2018-09-18 11:49:39,929 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:49:39,929 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, 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, 4, 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] [2018-09-18 11:49:39,930 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:49:39,930 INFO L82 PathProgramCache]: Analyzing trace with hash -648252859, now seen corresponding path program 2 times [2018-09-18 11:49:39,930 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:49:39,931 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:49:39,931 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:49:39,931 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:49:39,931 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:49:39,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:49:40,636 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-09-18 11:49:40,838 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-09-18 11:49:41,908 INFO L134 CoverageAnalysis]: Checked inductivity of 1388 backedges. 637 proven. 534 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2018-09-18 11:49:41,908 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:49:41,908 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:49:41,916 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-18 11:49:41,916 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-09-18 11:49:42,093 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-18 11:49:42,093 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-18 11:49:42,102 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:49:42,512 INFO L134 CoverageAnalysis]: Checked inductivity of 1388 backedges. 1004 proven. 2 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2018-09-18 11:49:42,513 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:49:43,357 INFO L134 CoverageAnalysis]: Checked inductivity of 1388 backedges. 631 proven. 112 refuted. 0 times theorem prover too weak. 645 trivial. 0 not checked. [2018-09-18 11:49:43,378 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:49:43,378 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:49:43,395 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-18 11:49:43,395 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-09-18 11:49:43,766 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-18 11:49:43,767 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-18 11:49:43,783 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:49:44,883 INFO L134 CoverageAnalysis]: Checked inductivity of 1388 backedges. 989 proven. 17 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2018-09-18 11:49:44,883 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:49:45,203 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 25 [2018-09-18 11:49:47,138 INFO L134 CoverageAnalysis]: Checked inductivity of 1388 backedges. 310 proven. 748 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2018-09-18 11:49:47,141 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:49:47,141 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5, 5, 10, 11] total 31 [2018-09-18 11:49:47,141 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:49:47,142 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-09-18 11:49:47,143 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-09-18 11:49:47,143 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=782, Unknown=0, NotChecked=0, Total=930 [2018-09-18 11:49:47,143 INFO L87 Difference]: Start difference. First operand 9800 states and 11127 transitions. Second operand 18 states. [2018-09-18 11:49:49,688 WARN L178 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 27 [2018-09-18 11:49:50,960 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 41 [2018-09-18 11:49:52,576 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 46 [2018-09-18 11:49:53,024 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2018-09-18 11:49:53,266 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2018-09-18 11:49:55,669 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 49 [2018-09-18 11:49:55,857 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2018-09-18 11:49:56,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:49:56,638 INFO L93 Difference]: Finished difference Result 23664 states and 27623 transitions. [2018-09-18 11:49:56,642 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-09-18 11:49:56,642 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 660 [2018-09-18 11:49:56,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:49:56,687 INFO L225 Difference]: With dead ends: 23664 [2018-09-18 11:49:56,687 INFO L226 Difference]: Without dead ends: 13870 [2018-09-18 11:49:56,719 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2717 GetRequests, 2638 SyntacticMatches, 14 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1187 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=813, Invalid=3609, Unknown=0, NotChecked=0, Total=4422 [2018-09-18 11:49:56,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13870 states. [2018-09-18 11:49:56,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13870 to 13020. [2018-09-18 11:49:56,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13020 states. [2018-09-18 11:49:56,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13020 states to 13020 states and 14504 transitions. [2018-09-18 11:49:56,960 INFO L78 Accepts]: Start accepts. Automaton has 13020 states and 14504 transitions. Word has length 660 [2018-09-18 11:49:56,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:49:56,961 INFO L480 AbstractCegarLoop]: Abstraction has 13020 states and 14504 transitions. [2018-09-18 11:49:56,961 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-09-18 11:49:56,961 INFO L276 IsEmpty]: Start isEmpty. Operand 13020 states and 14504 transitions. [2018-09-18 11:49:57,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 783 [2018-09-18 11:49:57,016 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:49:57,016 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, 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, 5, 4, 4, 3, 3, 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 11:49:57,017 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:49:57,017 INFO L82 PathProgramCache]: Analyzing trace with hash -804316904, now seen corresponding path program 1 times [2018-09-18 11:49:57,017 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:49:57,018 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:49:57,018 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-18 11:49:57,018 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:49:57,018 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:49:57,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:49:58,071 INFO L134 CoverageAnalysis]: Checked inductivity of 2017 backedges. 706 proven. 224 refuted. 0 times theorem prover too weak. 1087 trivial. 0 not checked. [2018-09-18 11:49:58,071 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:49:58,071 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:49:58,090 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:49:58,090 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:49:58,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:49:58,285 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:49:58,924 INFO L134 CoverageAnalysis]: Checked inductivity of 2017 backedges. 1463 proven. 2 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2018-09-18 11:49:58,924 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:49:59,374 INFO L134 CoverageAnalysis]: Checked inductivity of 2017 backedges. 706 proven. 224 refuted. 0 times theorem prover too weak. 1087 trivial. 0 not checked. [2018-09-18 11:49:59,397 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:49:59,397 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 12 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:49:59,413 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:49:59,413 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:49:59,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:49:59,847 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:50:00,122 INFO L134 CoverageAnalysis]: Checked inductivity of 2017 backedges. 1463 proven. 2 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2018-09-18 11:50:00,122 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:50:00,568 INFO L134 CoverageAnalysis]: Checked inductivity of 2017 backedges. 706 proven. 224 refuted. 0 times theorem prover too weak. 1087 trivial. 0 not checked. [2018-09-18 11:50:00,571 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:50:00,572 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 9 [2018-09-18 11:50:00,572 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:50:00,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-18 11:50:00,573 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-18 11:50:00,574 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-09-18 11:50:00,574 INFO L87 Difference]: Start difference. First operand 13020 states and 14504 transitions. Second operand 7 states. [2018-09-18 11:50:03,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:50:03,506 INFO L93 Difference]: Finished difference Result 34146 states and 42641 transitions. [2018-09-18 11:50:03,506 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-18 11:50:03,506 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 782 [2018-09-18 11:50:03,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:50:03,639 INFO L225 Difference]: With dead ends: 34146 [2018-09-18 11:50:03,639 INFO L226 Difference]: Without dead ends: 21315 [2018-09-18 11:50:03,729 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3144 GetRequests, 3129 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2018-09-18 11:50:03,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21315 states. [2018-09-18 11:50:04,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21315 to 20853. [2018-09-18 11:50:04,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20853 states. [2018-09-18 11:50:04,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20853 states to 20853 states and 23722 transitions. [2018-09-18 11:50:04,192 INFO L78 Accepts]: Start accepts. Automaton has 20853 states and 23722 transitions. Word has length 782 [2018-09-18 11:50:04,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:50:04,193 INFO L480 AbstractCegarLoop]: Abstraction has 20853 states and 23722 transitions. [2018-09-18 11:50:04,193 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-18 11:50:04,193 INFO L276 IsEmpty]: Start isEmpty. Operand 20853 states and 23722 transitions. [2018-09-18 11:50:04,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 824 [2018-09-18 11:50:04,214 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:50:04,215 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, 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, 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, 4, 3, 3, 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] [2018-09-18 11:50:04,215 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:50:04,216 INFO L82 PathProgramCache]: Analyzing trace with hash -261072584, now seen corresponding path program 1 times [2018-09-18 11:50:04,216 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:50:04,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:50:04,217 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:50:04,217 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:50:04,217 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:50:04,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:50:06,372 INFO L134 CoverageAnalysis]: Checked inductivity of 2363 backedges. 929 proven. 835 refuted. 0 times theorem prover too weak. 599 trivial. 0 not checked. [2018-09-18 11:50:06,372 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:50:06,372 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:50:06,381 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:50:06,381 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:50:06,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:50:06,577 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:50:07,170 INFO L134 CoverageAnalysis]: Checked inductivity of 2363 backedges. 1443 proven. 2 refuted. 0 times theorem prover too weak. 918 trivial. 0 not checked. [2018-09-18 11:50:07,170 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:50:08,313 INFO L134 CoverageAnalysis]: Checked inductivity of 2363 backedges. 917 proven. 112 refuted. 0 times theorem prover too weak. 1334 trivial. 0 not checked. [2018-09-18 11:50:08,334 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:50:08,334 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 14 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:50:08,350 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:50:08,350 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:50:08,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:50:08,796 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:50:09,320 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-09-18 11:50:09,809 INFO L134 CoverageAnalysis]: Checked inductivity of 2363 backedges. 1435 proven. 10 refuted. 0 times theorem prover too weak. 918 trivial. 0 not checked. [2018-09-18 11:50:09,810 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:50:09,947 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-09-18 11:50:10,083 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 36 [2018-09-18 11:50:11,532 INFO L134 CoverageAnalysis]: Checked inductivity of 2363 backedges. 422 proven. 1075 refuted. 0 times theorem prover too weak. 866 trivial. 0 not checked. [MP cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (14)] Exception during sending of exit command (exit): Broken pipe [2018-09-18 11:50:11,536 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:50:11,536 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5, 8, 8] total 28 [2018-09-18 11:50:11,536 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:50:11,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-09-18 11:50:11,537 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-09-18 11:50:11,538 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=623, Unknown=0, NotChecked=0, Total=756 [2018-09-18 11:50:11,538 INFO L87 Difference]: Start difference. First operand 20853 states and 23722 transitions. Second operand 17 states. [2018-09-18 11:50:19,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:50:19,350 INFO L93 Difference]: Finished difference Result 40741 states and 48484 transitions. [2018-09-18 11:50:19,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-09-18 11:50:19,350 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 823 [2018-09-18 11:50:19,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:50:19,430 INFO L225 Difference]: With dead ends: 40741 [2018-09-18 11:50:19,430 INFO L226 Difference]: Without dead ends: 19293 [2018-09-18 11:50:19,511 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3375 GetRequests, 3297 SyntacticMatches, 8 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1422 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1093, Invalid=4019, Unknown=0, NotChecked=0, Total=5112 [2018-09-18 11:50:19,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19293 states. [2018-09-18 11:50:19,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19293 to 18847. [2018-09-18 11:50:19,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18847 states. [2018-09-18 11:50:19,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18847 states to 18847 states and 20985 transitions. [2018-09-18 11:50:19,920 INFO L78 Accepts]: Start accepts. Automaton has 18847 states and 20985 transitions. Word has length 823 [2018-09-18 11:50:19,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:50:19,921 INFO L480 AbstractCegarLoop]: Abstraction has 18847 states and 20985 transitions. [2018-09-18 11:50:19,921 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-09-18 11:50:19,921 INFO L276 IsEmpty]: Start isEmpty. Operand 18847 states and 20985 transitions. [2018-09-18 11:50:19,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 975 [2018-09-18 11:50:19,957 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:50:19,958 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, 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, 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, 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, 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] [2018-09-18 11:50:19,958 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:50:19,959 INFO L82 PathProgramCache]: Analyzing trace with hash -1171781263, now seen corresponding path program 1 times [2018-09-18 11:50:19,959 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:50:19,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:50:19,960 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:50:19,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:50:19,960 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:50:20,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:50:20,947 INFO L134 CoverageAnalysis]: Checked inductivity of 2684 backedges. 938 proven. 228 refuted. 0 times theorem prover too weak. 1518 trivial. 0 not checked. [2018-09-18 11:50:20,947 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:50:20,947 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:50:20,956 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:50:20,956 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:50:21,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:50:21,177 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:50:21,641 INFO L134 CoverageAnalysis]: Checked inductivity of 2684 backedges. 1827 proven. 2 refuted. 0 times theorem prover too weak. 855 trivial. 0 not checked. [2018-09-18 11:50:21,641 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:50:22,193 INFO L134 CoverageAnalysis]: Checked inductivity of 2684 backedges. 938 proven. 228 refuted. 0 times theorem prover too weak. 1518 trivial. 0 not checked. [2018-09-18 11:50:22,215 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:50:22,215 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 16 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 16 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:50:22,230 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:50:22,230 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:50:22,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:50:22,740 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:50:23,157 INFO L134 CoverageAnalysis]: Checked inductivity of 2684 backedges. 1827 proven. 2 refuted. 0 times theorem prover too weak. 855 trivial. 0 not checked. [2018-09-18 11:50:23,158 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:50:23,743 INFO L134 CoverageAnalysis]: Checked inductivity of 2684 backedges. 938 proven. 228 refuted. 0 times theorem prover too weak. 1518 trivial. 0 not checked. [2018-09-18 11:50:23,746 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:50:23,747 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 9 [2018-09-18 11:50:23,747 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:50:23,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-18 11:50:23,749 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-18 11:50:23,749 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-09-18 11:50:23,750 INFO L87 Difference]: Start difference. First operand 18847 states and 20985 transitions. Second operand 7 states. [2018-09-18 11:50:26,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:50:26,015 INFO L93 Difference]: Finished difference Result 38854 states and 43503 transitions. [2018-09-18 11:50:26,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-18 11:50:26,016 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 974 [2018-09-18 11:50:26,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:50:26,067 INFO L225 Difference]: With dead ends: 38854 [2018-09-18 11:50:26,067 INFO L226 Difference]: Without dead ends: 20196 [2018-09-18 11:50:26,125 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3911 GetRequests, 3896 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2018-09-18 11:50:26,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20196 states. [2018-09-18 11:50:26,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20196 to 20025. [2018-09-18 11:50:26,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20025 states. [2018-09-18 11:50:26,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20025 states to 20025 states and 22062 transitions. [2018-09-18 11:50:26,484 INFO L78 Accepts]: Start accepts. Automaton has 20025 states and 22062 transitions. Word has length 974 [2018-09-18 11:50:26,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:50:26,485 INFO L480 AbstractCegarLoop]: Abstraction has 20025 states and 22062 transitions. [2018-09-18 11:50:26,486 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-18 11:50:26,486 INFO L276 IsEmpty]: Start isEmpty. Operand 20025 states and 22062 transitions. [2018-09-18 11:50:26,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1031 [2018-09-18 11:50:26,526 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:50:26,527 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, 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, 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, 5, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:50:26,527 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:50:26,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1848364688, now seen corresponding path program 1 times [2018-09-18 11:50:26,528 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:50:26,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:50:26,529 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:50:26,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:50:26,529 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:50:26,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:50:29,184 INFO L134 CoverageAnalysis]: Checked inductivity of 3268 backedges. 1047 proven. 1376 refuted. 0 times theorem prover too weak. 845 trivial. 0 not checked. [2018-09-18 11:50:29,184 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:50:29,184 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 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:50:29,196 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:50:29,197 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:50:29,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:50:29,424 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:50:30,362 INFO L134 CoverageAnalysis]: Checked inductivity of 3268 backedges. 2086 proven. 2 refuted. 0 times theorem prover too weak. 1180 trivial. 0 not checked. [2018-09-18 11:50:30,362 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:50:31,290 INFO L134 CoverageAnalysis]: Checked inductivity of 3268 backedges. 1063 proven. 228 refuted. 0 times theorem prover too weak. 1977 trivial. 0 not checked. [2018-09-18 11:50:31,325 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:50:31,325 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 18 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 18 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:50:31,347 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:50:31,348 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:50:31,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:50:31,897 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:50:32,335 INFO L134 CoverageAnalysis]: Checked inductivity of 3268 backedges. 2081 proven. 25 refuted. 0 times theorem prover too weak. 1162 trivial. 0 not checked. [2018-09-18 11:50:32,336 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:50:33,397 INFO L134 CoverageAnalysis]: Checked inductivity of 3268 backedges. 1063 proven. 228 refuted. 0 times theorem prover too weak. 1977 trivial. 0 not checked. [2018-09-18 11:50:33,401 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:50:33,402 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 6, 6, 5, 5] total 23 [2018-09-18 11:50:33,402 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:50:33,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-09-18 11:50:33,404 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-09-18 11:50:33,405 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=415, Unknown=0, NotChecked=0, Total=506 [2018-09-18 11:50:33,406 INFO L87 Difference]: Start difference. First operand 20025 states and 22062 transitions. Second operand 18 states. [2018-09-18 11:50:35,141 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 46 [2018-09-18 11:50:37,624 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 50 [2018-09-18 11:50:40,513 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 52 [2018-09-18 11:50:41,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:50:41,246 INFO L93 Difference]: Finished difference Result 40328 states and 45353 transitions. [2018-09-18 11:50:41,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-09-18 11:50:41,246 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 1030 [2018-09-18 11:50:41,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:50:41,292 INFO L225 Difference]: With dead ends: 40328 [2018-09-18 11:50:41,292 INFO L226 Difference]: Without dead ends: 20492 [2018-09-18 11:50:41,334 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4200 GetRequests, 4142 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 834 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=815, Invalid=2725, Unknown=0, NotChecked=0, Total=3540 [2018-09-18 11:50:41,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20492 states. [2018-09-18 11:50:41,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20492 to 20061. [2018-09-18 11:50:41,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20061 states. [2018-09-18 11:50:41,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20061 states to 20061 states and 21740 transitions. [2018-09-18 11:50:41,687 INFO L78 Accepts]: Start accepts. Automaton has 20061 states and 21740 transitions. Word has length 1030 [2018-09-18 11:50:41,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:50:41,688 INFO L480 AbstractCegarLoop]: Abstraction has 20061 states and 21740 transitions. [2018-09-18 11:50:41,688 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-09-18 11:50:41,688 INFO L276 IsEmpty]: Start isEmpty. Operand 20061 states and 21740 transitions. [2018-09-18 11:50:41,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1152 [2018-09-18 11:50:41,727 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:50:41,728 INFO L376 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:50:41,728 INFO L423 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:50:41,729 INFO L82 PathProgramCache]: Analyzing trace with hash -450780986, now seen corresponding path program 1 times [2018-09-18 11:50:41,729 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:50:41,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:50:41,730 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:50:41,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:50:41,730 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:50:41,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:50:43,485 INFO L134 CoverageAnalysis]: Checked inductivity of 4002 backedges. 1708 proven. 230 refuted. 0 times theorem prover too weak. 2064 trivial. 0 not checked. [2018-09-18 11:50:43,485 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:50:43,485 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:50:43,498 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:50:43,498 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:50:43,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:50:43,767 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:50:44,379 INFO L134 CoverageAnalysis]: Checked inductivity of 4002 backedges. 2498 proven. 6 refuted. 0 times theorem prover too weak. 1498 trivial. 0 not checked. [2018-09-18 11:50:44,379 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:50:45,456 INFO L134 CoverageAnalysis]: Checked inductivity of 4002 backedges. 1708 proven. 303 refuted. 0 times theorem prover too weak. 1991 trivial. 0 not checked. [2018-09-18 11:50:45,479 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:50:45,479 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 20 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 20 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:50:45,497 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:50:45,497 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:50:46,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:50:46,113 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:50:46,767 INFO L134 CoverageAnalysis]: Checked inductivity of 4002 backedges. 2498 proven. 6 refuted. 0 times theorem prover too weak. 1498 trivial. 0 not checked. [2018-09-18 11:50:46,767 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:50:47,705 INFO L134 CoverageAnalysis]: Checked inductivity of 4002 backedges. 1708 proven. 303 refuted. 0 times theorem prover too weak. 1991 trivial. 0 not checked. [2018-09-18 11:50:47,709 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:50:47,710 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8, 7, 8] total 15 [2018-09-18 11:50:47,710 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:50:47,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 11:50:47,713 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 11:50:47,714 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2018-09-18 11:50:47,714 INFO L87 Difference]: Start difference. First operand 20061 states and 21740 transitions. Second operand 9 states. [2018-09-18 11:50:53,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:50:53,659 INFO L93 Difference]: Finished difference Result 42648 states and 46367 transitions. [2018-09-18 11:50:53,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-18 11:50:53,660 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1151 [2018-09-18 11:50:53,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:50:53,705 INFO L225 Difference]: With dead ends: 42648 [2018-09-18 11:50:53,705 INFO L226 Difference]: Without dead ends: 22776 [2018-09-18 11:50:53,731 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4620 GetRequests, 4600 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=117, Invalid=263, Unknown=0, NotChecked=0, Total=380 [2018-09-18 11:50:53,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22776 states. [2018-09-18 11:50:54,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22776 to 21401. [2018-09-18 11:50:54,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21401 states. [2018-09-18 11:50:54,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21401 states to 21401 states and 23221 transitions. [2018-09-18 11:50:54,056 INFO L78 Accepts]: Start accepts. Automaton has 21401 states and 23221 transitions. Word has length 1151 [2018-09-18 11:50:54,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:50:54,057 INFO L480 AbstractCegarLoop]: Abstraction has 21401 states and 23221 transitions. [2018-09-18 11:50:54,057 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 11:50:54,057 INFO L276 IsEmpty]: Start isEmpty. Operand 21401 states and 23221 transitions. [2018-09-18 11:50:54,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1509 [2018-09-18 11:50:54,117 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:50:54,117 INFO L376 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 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, 7, 7, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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 11:50:54,118 INFO L423 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:50:54,118 INFO L82 PathProgramCache]: Analyzing trace with hash 857187999, now seen corresponding path program 1 times [2018-09-18 11:50:54,118 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:50:54,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:50:54,119 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:50:54,120 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:50:54,120 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:50:54,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:50:55,047 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-09-18 11:50:55,670 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 10 [2018-09-18 11:50:59,142 INFO L134 CoverageAnalysis]: Checked inductivity of 6605 backedges. 1325 proven. 3191 refuted. 0 times theorem prover too weak. 2089 trivial. 0 not checked. [2018-09-18 11:50:59,142 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:50:59,142 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 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:50:59,150 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:50:59,150 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:50:59,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:50:59,490 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:51:00,490 INFO L134 CoverageAnalysis]: Checked inductivity of 6605 backedges. 4013 proven. 2 refuted. 0 times theorem prover too weak. 2590 trivial. 0 not checked. [2018-09-18 11:51:00,490 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:51:02,352 INFO L134 CoverageAnalysis]: Checked inductivity of 6605 backedges. 1517 proven. 388 refuted. 0 times theorem prover too weak. 4700 trivial. 0 not checked. [2018-09-18 11:51:02,373 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:51:02,373 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 22 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 22 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:51:02,389 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:51:02,390 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:51:03,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:51:03,224 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:51:06,119 INFO L134 CoverageAnalysis]: Checked inductivity of 6605 backedges. 4664 proven. 24 refuted. 0 times theorem prover too weak. 1917 trivial. 0 not checked. [2018-09-18 11:51:06,120 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:51:06,712 WARN L178 SmtUtils]: Spent 541.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 31 [2018-09-18 11:51:06,983 WARN L178 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2018-09-18 11:51:07,652 WARN L178 SmtUtils]: Spent 667.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2018-09-18 11:51:08,354 WARN L178 SmtUtils]: Spent 700.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2018-09-18 11:51:09,744 WARN L178 SmtUtils]: Spent 977.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 25 [2018-09-18 11:51:15,208 INFO L134 CoverageAnalysis]: Checked inductivity of 6605 backedges. 787 proven. 4057 refuted. 0 times theorem prover too weak. 1761 trivial. 0 not checked. [2018-09-18 11:51:15,211 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:51:15,213 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 5, 5, 13, 14] total 41 [2018-09-18 11:51:15,213 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:51:15,214 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-09-18 11:51:15,214 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-09-18 11:51:15,215 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=1405, Unknown=0, NotChecked=0, Total=1640 [2018-09-18 11:51:15,215 INFO L87 Difference]: Start difference. First operand 21401 states and 23221 transitions. Second operand 19 states. [2018-09-18 11:51:16,277 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 42 [2018-09-18 11:51:17,319 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 48 [2018-09-18 11:51:18,112 WARN L178 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 46 [2018-09-18 11:51:20,983 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2018-09-18 11:51:21,172 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 41 [2018-09-18 11:51:24,577 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 44 [2018-09-18 11:51:25,003 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 31 [2018-09-18 11:51:28,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:51:28,269 INFO L93 Difference]: Finished difference Result 43353 states and 49774 transitions. [2018-09-18 11:51:28,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-09-18 11:51:28,269 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 1508 [2018-09-18 11:51:28,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:51:28,350 INFO L225 Difference]: With dead ends: 43353 [2018-09-18 11:51:28,350 INFO L226 Difference]: Without dead ends: 22141 [2018-09-18 11:51:28,407 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6137 GetRequests, 6028 SyntacticMatches, 21 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2587 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=1265, Invalid=6745, Unknown=0, NotChecked=0, Total=8010 [2018-09-18 11:51:28,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22141 states. [2018-09-18 11:51:28,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22141 to 21237. [2018-09-18 11:51:28,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21237 states. [2018-09-18 11:51:28,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21237 states to 21237 states and 22797 transitions. [2018-09-18 11:51:28,796 INFO L78 Accepts]: Start accepts. Automaton has 21237 states and 22797 transitions. Word has length 1508 [2018-09-18 11:51:28,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:51:28,797 INFO L480 AbstractCegarLoop]: Abstraction has 21237 states and 22797 transitions. [2018-09-18 11:51:28,797 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-09-18 11:51:28,797 INFO L276 IsEmpty]: Start isEmpty. Operand 21237 states and 22797 transitions. [2018-09-18 11:51:28,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1628 [2018-09-18 11:51:28,831 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:51:28,832 INFO L376 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 8, 8, 7, 7, 7, 7, 7, 6, 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, 3, 3, 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, 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 11:51:28,832 INFO L423 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:51:28,832 INFO L82 PathProgramCache]: Analyzing trace with hash 2068892919, now seen corresponding path program 1 times [2018-09-18 11:51:28,832 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:51:28,833 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:51:28,833 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:51:28,833 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:51:28,833 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:51:28,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:51:29,762 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-09-18 11:51:32,619 INFO L134 CoverageAnalysis]: Checked inductivity of 7867 backedges. 1796 proven. 1168 refuted. 0 times theorem prover too weak. 4903 trivial. 0 not checked. [2018-09-18 11:51:32,619 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:51:32,619 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 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:51:32,627 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:51:32,627 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:51:32,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:51:33,011 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:51:33,444 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-09-18 11:51:34,658 INFO L134 CoverageAnalysis]: Checked inductivity of 7867 backedges. 3025 proven. 2 refuted. 0 times theorem prover too weak. 4840 trivial. 0 not checked. [2018-09-18 11:51:34,659 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:51:37,794 INFO L134 CoverageAnalysis]: Checked inductivity of 7867 backedges. 1805 proven. 112 refuted. 0 times theorem prover too weak. 5950 trivial. 0 not checked. [2018-09-18 11:51:37,817 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:51:37,818 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 24 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 24 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:51:37,838 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:51:37,838 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:51:38,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:51:38,742 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:51:40,031 INFO L134 CoverageAnalysis]: Checked inductivity of 7867 backedges. 3027 proven. 60 refuted. 0 times theorem prover too weak. 4780 trivial. 0 not checked. [2018-09-18 11:51:40,031 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:51:43,232 INFO L134 CoverageAnalysis]: Checked inductivity of 7867 backedges. 1805 proven. 112 refuted. 0 times theorem prover too weak. 5950 trivial. 0 not checked. [2018-09-18 11:51:43,235 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:51:43,237 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5, 6, 5] total 24 [2018-09-18 11:51:43,237 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:51:43,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-09-18 11:51:43,239 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-09-18 11:51:43,239 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=466, Unknown=0, NotChecked=0, Total=552 [2018-09-18 11:51:43,239 INFO L87 Difference]: Start difference. First operand 21237 states and 22797 transitions. Second operand 17 states. [2018-09-18 11:51:47,078 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 33 [2018-09-18 11:51:50,014 WARN L178 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 42 [2018-09-18 11:51:51,935 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 39 [2018-09-18 11:51:52,132 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 43 [2018-09-18 11:51:52,325 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2018-09-18 11:51:52,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:51:52,481 INFO L93 Difference]: Finished difference Result 42488 states and 45670 transitions. [2018-09-18 11:51:52,481 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-09-18 11:51:52,481 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 1627 [2018-09-18 11:51:52,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:51:52,533 INFO L225 Difference]: With dead ends: 42488 [2018-09-18 11:51:52,533 INFO L226 Difference]: Without dead ends: 21440 [2018-09-18 11:51:52,569 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6591 GetRequests, 6525 SyntacticMatches, 3 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1023 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=740, Invalid=3420, Unknown=0, NotChecked=0, Total=4160 [2018-09-18 11:51:52,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21440 states. [2018-09-18 11:51:52,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21440 to 21226. [2018-09-18 11:51:52,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21226 states. [2018-09-18 11:51:52,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21226 states to 21226 states and 22712 transitions. [2018-09-18 11:51:52,906 INFO L78 Accepts]: Start accepts. Automaton has 21226 states and 22712 transitions. Word has length 1627 [2018-09-18 11:51:52,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:51:52,907 INFO L480 AbstractCegarLoop]: Abstraction has 21226 states and 22712 transitions. [2018-09-18 11:51:52,907 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-09-18 11:51:52,907 INFO L276 IsEmpty]: Start isEmpty. Operand 21226 states and 22712 transitions. [2018-09-18 11:51:52,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1847 [2018-09-18 11:51:52,955 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:51:52,956 INFO L376 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 10, 9, 9, 8, 7, 7, 7, 7, 6, 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, 3, 3, 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, 1, 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 11:51:52,957 INFO L423 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:51:52,957 INFO L82 PathProgramCache]: Analyzing trace with hash 1000087254, now seen corresponding path program 1 times [2018-09-18 11:51:52,957 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:51:52,958 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:51:52,959 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:51:52,959 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:51:52,959 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:51:53,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:51:58,355 INFO L134 CoverageAnalysis]: Checked inductivity of 10584 backedges. 2179 proven. 2489 refuted. 0 times theorem prover too weak. 5916 trivial. 0 not checked. [2018-09-18 11:51:58,355 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:51:58,355 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 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:51:58,363 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:51:58,364 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:51:58,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:51:58,808 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:52:00,356 INFO L134 CoverageAnalysis]: Checked inductivity of 10584 backedges. 4574 proven. 6 refuted. 0 times theorem prover too weak. 6004 trivial. 0 not checked. [2018-09-18 11:52:00,356 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:52:02,938 INFO L134 CoverageAnalysis]: Checked inductivity of 10584 backedges. 3147 proven. 214 refuted. 0 times theorem prover too weak. 7223 trivial. 0 not checked. [2018-09-18 11:52:02,960 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:52:02,960 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 26 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 26 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:52:02,978 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:52:02,978 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:52:03,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:52:03,938 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:52:07,153 INFO L134 CoverageAnalysis]: Checked inductivity of 10584 backedges. 3705 proven. 978 refuted. 0 times theorem prover too weak. 5901 trivial. 0 not checked. [2018-09-18 11:52:07,153 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:52:07,342 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-09-18 11:52:07,489 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-09-18 11:52:07,714 WARN L178 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2018-09-18 11:52:13,823 INFO L134 CoverageAnalysis]: Checked inductivity of 10584 backedges. 989 proven. 3746 refuted. 0 times theorem prover too weak. 5849 trivial. 0 not checked. [2018-09-18 11:52:13,828 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:52:13,829 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5, 11, 11] total 31 [2018-09-18 11:52:13,829 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:52:13,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-09-18 11:52:13,831 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-09-18 11:52:13,831 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=766, Unknown=0, NotChecked=0, Total=930 [2018-09-18 11:52:13,832 INFO L87 Difference]: Start difference. First operand 21226 states and 22712 transitions. Second operand 16 states. [2018-09-18 11:52:22,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:52:22,450 INFO L93 Difference]: Finished difference Result 43115 states and 46995 transitions. [2018-09-18 11:52:22,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-09-18 11:52:22,450 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 1846 [2018-09-18 11:52:22,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:52:22,502 INFO L225 Difference]: With dead ends: 43115 [2018-09-18 11:52:22,502 INFO L226 Difference]: Without dead ends: 21529 [2018-09-18 11:52:22,546 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7473 GetRequests, 7375 SyntacticMatches, 34 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1556 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=889, Invalid=3401, Unknown=0, NotChecked=0, Total=4290 [2018-09-18 11:52:22,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21529 states. [2018-09-18 11:52:22,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21529 to 20095. [2018-09-18 11:52:22,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20095 states. [2018-09-18 11:52:22,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20095 states to 20095 states and 21266 transitions. [2018-09-18 11:52:22,826 INFO L78 Accepts]: Start accepts. Automaton has 20095 states and 21266 transitions. Word has length 1846 [2018-09-18 11:52:22,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:52:22,827 INFO L480 AbstractCegarLoop]: Abstraction has 20095 states and 21266 transitions. [2018-09-18 11:52:22,827 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-09-18 11:52:22,827 INFO L276 IsEmpty]: Start isEmpty. Operand 20095 states and 21266 transitions. [2018-09-18 11:52:22,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1887 [2018-09-18 11:52:22,863 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:52:22,864 INFO L376 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 9, 8, 8, 8, 8, 8, 8, 7, 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, 4, 4, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:52:22,864 INFO L423 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:52:22,864 INFO L82 PathProgramCache]: Analyzing trace with hash -2116795064, now seen corresponding path program 1 times [2018-09-18 11:52:22,864 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:52:22,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:52:22,865 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:52:22,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:52:22,866 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:52:22,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-09-18 11:52:23,529 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Timeout exceeded at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.interpolate(Interpolator.java:215) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:201) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:919) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.getInterpolants(ManagedScript.java:199) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:282) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsTree(InterpolatingTraceCheckCraig.java:271) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:207) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructCraig(TraceCheckConstructor.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:183) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseTaipanRefinementStrategy.getTraceCheck(BaseTaipanRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:430) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:434) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:375) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:313) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-09-18 11:52:23,533 INFO L168 Benchmark]: Toolchain (without parser) took 225314.34 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -190.7 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-09-18 11:52:23,534 INFO L168 Benchmark]: CDTParser took 0.23 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 11:52:23,535 INFO L168 Benchmark]: CACSL2BoogieTranslator took 874.02 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: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-09-18 11:52:23,536 INFO L168 Benchmark]: Boogie Procedure Inliner took 121.27 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: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-09-18 11:52:23,536 INFO L168 Benchmark]: Boogie Preprocessor took 299.66 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 768.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -869.5 MB). Peak memory consumption was 33.0 MB. Max. memory is 7.1 GB. [2018-09-18 11:52:23,537 INFO L168 Benchmark]: RCFGBuilder took 4014.01 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 123.2 MB). Peak memory consumption was 123.2 MB. Max. memory is 7.1 GB. [2018-09-18 11:52:23,538 INFO L168 Benchmark]: TraceAbstraction took 219998.37 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 492.2 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-09-18 11:52:23,547 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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 874.02 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: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 121.27 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: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 299.66 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 768.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -869.5 MB). Peak memory consumption was 33.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 4014.01 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 123.2 MB). Peak memory consumption was 123.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 219998.37 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 492.2 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: Timeout exceeded de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Timeout exceeded: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.interpolate(Interpolator.java:215) RESULT: Ultimate could not prove your program: Toolchain returned no result. Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem14_label17_true-unreach-call_false-termination.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-18_11-52-23-559.csv Completed graceful shutdown