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/Problem12_label49_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-14 17:25:28,597 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-14 17:25:28,599 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-14 17:25:28,614 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-14 17:25:28,614 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-14 17:25:28,618 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-14 17:25:28,619 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-14 17:25:28,621 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-14 17:25:28,624 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-14 17:25:28,625 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-14 17:25:28,632 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-14 17:25:28,633 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-14 17:25:28,637 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-14 17:25:28,638 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-14 17:25:28,641 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-14 17:25:28,643 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-14 17:25:28,643 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-14 17:25:28,648 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-14 17:25:28,653 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-14 17:25:28,655 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-14 17:25:28,658 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-14 17:25:28,660 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-14 17:25:28,667 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-14 17:25:28,667 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-14 17:25:28,667 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-14 17:25:28,669 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-14 17:25:28,671 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-14 17:25:28,671 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-14 17:25:28,672 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-14 17:25:28,673 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-14 17:25:28,674 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-14 17:25:28,674 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-14 17:25:28,677 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-14 17:25:28,677 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-14 17:25:28,678 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-14 17:25:28,679 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-14 17:25:28,679 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-14 17:25:28,710 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-14 17:25:28,711 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-14 17:25:28,711 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-14 17:25:28,712 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-14 17:25:28,712 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-14 17:25:28,712 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-14 17:25:28,712 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-14 17:25:28,713 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-14 17:25:28,713 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-14 17:25:28,713 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-14 17:25:28,713 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-14 17:25:28,717 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-14 17:25:28,717 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-14 17:25:28,717 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-14 17:25:28,718 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-14 17:25:28,718 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-14 17:25:28,718 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-14 17:25:28,720 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-14 17:25:28,720 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-14 17:25:28,721 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-14 17:25:28,721 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-14 17:25:28,722 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-14 17:25:28,722 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-14 17:25:28,722 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 17:25:28,722 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-14 17:25:28,723 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-14 17:25:28,723 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-14 17:25:28,723 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-14 17:25:28,723 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-14 17:25:28,724 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-14 17:25:28,724 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-14 17:25:28,724 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-14 17:25:28,724 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-14 17:25:28,781 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-14 17:25:28,794 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-14 17:25:28,798 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-14 17:25:28,800 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-14 17:25:28,801 INFO L276 PluginConnector]: CDTParser initialized [2018-09-14 17:25:28,801 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label49_true-unreach-call.c [2018-09-14 17:25:29,177 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e400a03c9/b3b01103c04b4079876134d11cc8e831/FLAG6f1b04740 [2018-09-14 17:25:29,650 INFO L277 CDTParser]: Found 1 translation units. [2018-09-14 17:25:29,651 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label49_true-unreach-call.c [2018-09-14 17:25:29,682 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e400a03c9/b3b01103c04b4079876134d11cc8e831/FLAG6f1b04740 [2018-09-14 17:25:29,700 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e400a03c9/b3b01103c04b4079876134d11cc8e831 [2018-09-14 17:25:29,713 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-14 17:25:29,719 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-14 17:25:29,720 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-14 17:25:29,720 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-14 17:25:29,730 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-14 17:25:29,732 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 05:25:29" (1/1) ... [2018-09-14 17:25:29,736 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35f90d72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:25:29, skipping insertion in model container [2018-09-14 17:25:29,736 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 05:25:29" (1/1) ... [2018-09-14 17:25:29,749 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-14 17:25:31,013 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 17:25:31,033 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-14 17:25:31,811 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 17:25:32,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:25:32 WrapperNode [2018-09-14 17:25:32,060 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-14 17:25:32,061 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-14 17:25:32,062 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-14 17:25:32,062 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-14 17:25:32,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:25:32" (1/1) ... [2018-09-14 17:25:32,165 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:25:32" (1/1) ... [2018-09-14 17:25:32,317 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-14 17:25:32,317 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-14 17:25:32,317 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-14 17:25:32,318 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-14 17:25:32,889 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:25:32" (1/1) ... [2018-09-14 17:25:32,889 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:25:32" (1/1) ... [2018-09-14 17:25:32,919 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:25:32" (1/1) ... [2018-09-14 17:25:32,920 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:25:32" (1/1) ... [2018-09-14 17:25:33,060 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:25:32" (1/1) ... [2018-09-14 17:25:33,092 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:25:32" (1/1) ... [2018-09-14 17:25:33,153 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:25:32" (1/1) ... [2018-09-14 17:25:33,208 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-14 17:25:33,209 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-14 17:25:33,209 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-14 17:25:33,209 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-14 17:25:33,210 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:25:32" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 17:25:33,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-14 17:25:33,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-14 17:25:33,284 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-09-14 17:25:33,284 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-09-14 17:25:33,284 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-14 17:25:33,284 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-14 17:25:33,285 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-14 17:25:33,285 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-14 17:25:33,285 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-14 17:25:33,285 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-14 17:25:33,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-14 17:25:33,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-14 17:25:33,286 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-14 17:25:33,286 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-14 17:25:47,298 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-14 17:25:47,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 05:25:47 BoogieIcfgContainer [2018-09-14 17:25:47,300 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-14 17:25:47,301 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-14 17:25:47,301 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-14 17:25:47,304 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-14 17:25:47,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 05:25:29" (1/3) ... [2018-09-14 17:25:47,306 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eebea86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 05:25:47, skipping insertion in model container [2018-09-14 17:25:47,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:25:32" (2/3) ... [2018-09-14 17:25:47,306 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eebea86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 05:25:47, skipping insertion in model container [2018-09-14 17:25:47,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 05:25:47" (3/3) ... [2018-09-14 17:25:47,308 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label49_true-unreach-call.c [2018-09-14 17:25:47,318 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-14 17:25:47,331 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-14 17:25:47,396 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-14 17:25:47,397 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-14 17:25:47,397 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-14 17:25:47,397 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-14 17:25:47,397 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-14 17:25:47,397 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-14 17:25:47,398 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-14 17:25:47,398 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-14 17:25:47,398 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-14 17:25:47,440 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-09-14 17:25:47,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-09-14 17:25:47,450 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:25:47,451 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] [2018-09-14 17:25:47,452 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:25:47,459 INFO L82 PathProgramCache]: Analyzing trace with hash -1466253757, now seen corresponding path program 1 times [2018-09-14 17:25:47,462 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:25:47,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:25:47,509 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:25:47,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:25:47,509 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:25:47,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:25:47,949 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:25:48,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:25:48,070 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:25:48,070 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-14 17:25:48,070 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:25:48,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 17:25:48,094 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 17:25:48,095 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 17:25:48,100 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-09-14 17:25:56,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:25:56,131 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-09-14 17:25:56,131 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 17:25:56,133 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 49 [2018-09-14 17:25:56,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:25:56,168 INFO L225 Difference]: With dead ends: 2446 [2018-09-14 17:25:56,169 INFO L226 Difference]: Without dead ends: 1604 [2018-09-14 17:25:56,179 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 17:25:56,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-09-14 17:25:56,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-09-14 17:25:56,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-09-14 17:25:56,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 3021 transitions. [2018-09-14 17:25:56,344 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 3021 transitions. Word has length 49 [2018-09-14 17:25:56,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:25:56,345 INFO L480 AbstractCegarLoop]: Abstraction has 1604 states and 3021 transitions. [2018-09-14 17:25:56,345 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 17:25:56,345 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 3021 transitions. [2018-09-14 17:25:56,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-09-14 17:25:56,352 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:25:56,353 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:25:56,353 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:25:56,353 INFO L82 PathProgramCache]: Analyzing trace with hash -1490932028, now seen corresponding path program 1 times [2018-09-14 17:25:56,353 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:25:56,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:25:56,355 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:25:56,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:25:56,355 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:25:56,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:25:56,694 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:25:56,694 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:25:56,694 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 17:25:56,694 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:25:56,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:25:56,696 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:25:56,697 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:25:56,697 INFO L87 Difference]: Start difference. First operand 1604 states and 3021 transitions. Second operand 6 states. [2018-09-14 17:26:11,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:26:11,325 INFO L93 Difference]: Finished difference Result 6330 states and 12128 transitions. [2018-09-14 17:26:11,326 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:26:11,326 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 127 [2018-09-14 17:26:11,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:26:11,358 INFO L225 Difference]: With dead ends: 6330 [2018-09-14 17:26:11,358 INFO L226 Difference]: Without dead ends: 4732 [2018-09-14 17:26:11,367 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 17:26:11,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4732 states. [2018-09-14 17:26:11,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4732 to 4700. [2018-09-14 17:26:11,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4700 states. [2018-09-14 17:26:11,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4700 states to 4700 states and 7674 transitions. [2018-09-14 17:26:11,504 INFO L78 Accepts]: Start accepts. Automaton has 4700 states and 7674 transitions. Word has length 127 [2018-09-14 17:26:11,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:26:11,504 INFO L480 AbstractCegarLoop]: Abstraction has 4700 states and 7674 transitions. [2018-09-14 17:26:11,505 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:26:11,505 INFO L276 IsEmpty]: Start isEmpty. Operand 4700 states and 7674 transitions. [2018-09-14 17:26:11,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-09-14 17:26:11,510 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:26:11,511 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:26:11,511 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:26:11,511 INFO L82 PathProgramCache]: Analyzing trace with hash -729393447, now seen corresponding path program 1 times [2018-09-14 17:26:11,512 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:26:11,512 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:26:11,513 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:26:11,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:26:11,513 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:26:11,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:26:11,859 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:26:11,859 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:26:11,860 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-14 17:26:11,860 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:26:11,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:26:11,861 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:26:11,861 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-09-14 17:26:11,861 INFO L87 Difference]: Start difference. First operand 4700 states and 7674 transitions. Second operand 5 states. [2018-09-14 17:26:20,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:26:20,275 INFO L93 Difference]: Finished difference Result 14300 states and 23670 transitions. [2018-09-14 17:26:20,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-14 17:26:20,277 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 130 [2018-09-14 17:26:20,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:26:20,328 INFO L225 Difference]: With dead ends: 14300 [2018-09-14 17:26:20,328 INFO L226 Difference]: Without dead ends: 9606 [2018-09-14 17:26:20,345 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:26:20,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9606 states. [2018-09-14 17:26:20,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9606 to 9524. [2018-09-14 17:26:20,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9524 states. [2018-09-14 17:26:20,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9524 states to 9524 states and 14353 transitions. [2018-09-14 17:26:20,744 INFO L78 Accepts]: Start accepts. Automaton has 9524 states and 14353 transitions. Word has length 130 [2018-09-14 17:26:20,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:26:20,745 INFO L480 AbstractCegarLoop]: Abstraction has 9524 states and 14353 transitions. [2018-09-14 17:26:20,745 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:26:20,745 INFO L276 IsEmpty]: Start isEmpty. Operand 9524 states and 14353 transitions. [2018-09-14 17:26:20,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-09-14 17:26:20,751 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:26:20,752 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:26:20,752 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:26:20,753 INFO L82 PathProgramCache]: Analyzing trace with hash 1452508056, now seen corresponding path program 1 times [2018-09-14 17:26:20,754 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:26:20,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:26:20,755 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:26:20,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:26:20,756 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:26:20,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:26:21,271 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:26:21,272 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:26:21,272 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 17:26:21,272 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:26:21,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:26:21,273 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:26:21,273 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:26:21,273 INFO L87 Difference]: Start difference. First operand 9524 states and 14353 transitions. Second operand 6 states. [2018-09-14 17:26:44,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:26:44,996 INFO L93 Difference]: Finished difference Result 38624 states and 63941 transitions. [2018-09-14 17:26:44,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-14 17:26:44,996 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 153 [2018-09-14 17:26:44,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:26:45,156 INFO L225 Difference]: With dead ends: 38624 [2018-09-14 17:26:45,157 INFO L226 Difference]: Without dead ends: 29106 [2018-09-14 17:26:45,243 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-09-14 17:26:45,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29106 states. [2018-09-14 17:26:46,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29106 to 28908. [2018-09-14 17:26:46,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28908 states. [2018-09-14 17:26:46,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28908 states to 28908 states and 42530 transitions. [2018-09-14 17:26:46,108 INFO L78 Accepts]: Start accepts. Automaton has 28908 states and 42530 transitions. Word has length 153 [2018-09-14 17:26:46,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:26:46,109 INFO L480 AbstractCegarLoop]: Abstraction has 28908 states and 42530 transitions. [2018-09-14 17:26:46,109 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:26:46,109 INFO L276 IsEmpty]: Start isEmpty. Operand 28908 states and 42530 transitions. [2018-09-14 17:26:46,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-09-14 17:26:46,113 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:26:46,113 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:26:46,114 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:26:46,114 INFO L82 PathProgramCache]: Analyzing trace with hash -1417457295, now seen corresponding path program 1 times [2018-09-14 17:26:46,114 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:26:46,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:26:46,115 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:26:46,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:26:46,115 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:26:46,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:26:46,426 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:26:46,762 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:26:46,762 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:26:46,762 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 17:26:46,762 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:26:46,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:26:46,763 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:26:46,763 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:26:46,763 INFO L87 Difference]: Start difference. First operand 28908 states and 42530 transitions. Second operand 6 states. [2018-09-14 17:26:59,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:26:59,340 INFO L93 Difference]: Finished difference Result 77335 states and 121378 transitions. [2018-09-14 17:26:59,340 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:26:59,340 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 174 [2018-09-14 17:26:59,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:26:59,554 INFO L225 Difference]: With dead ends: 77335 [2018-09-14 17:26:59,554 INFO L226 Difference]: Without dead ends: 48433 [2018-09-14 17:26:59,645 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 17:26:59,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48433 states. [2018-09-14 17:27:01,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48433 to 48224. [2018-09-14 17:27:01,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48224 states. [2018-09-14 17:27:01,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48224 states to 48224 states and 68462 transitions. [2018-09-14 17:27:01,216 INFO L78 Accepts]: Start accepts. Automaton has 48224 states and 68462 transitions. Word has length 174 [2018-09-14 17:27:01,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:27:01,216 INFO L480 AbstractCegarLoop]: Abstraction has 48224 states and 68462 transitions. [2018-09-14 17:27:01,216 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:27:01,217 INFO L276 IsEmpty]: Start isEmpty. Operand 48224 states and 68462 transitions. [2018-09-14 17:27:01,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-09-14 17:27:01,227 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:27:01,227 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 17:27:01,228 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:27:01,228 INFO L82 PathProgramCache]: Analyzing trace with hash -1734956816, now seen corresponding path program 1 times [2018-09-14 17:27:01,228 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:27:01,229 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:27:01,229 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:27:01,229 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:27:01,229 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:27:01,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:27:01,495 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:27:01,720 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 84 proven. 76 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:27:01,721 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:27:01,721 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:27:01,734 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:27:01,734 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:27:01,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:27:01,854 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:27:02,265 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2018-09-14 17:27:02,265 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:27:02,655 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 84 proven. 76 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:27:02,695 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:27:02,695 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-09-14 17:27:02,696 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:27:02,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:27:02,697 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:27:02,697 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-09-14 17:27:02,697 INFO L87 Difference]: Start difference. First operand 48224 states and 68462 transitions. Second operand 5 states. [2018-09-14 17:27:17,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:27:17,699 INFO L93 Difference]: Finished difference Result 127812 states and 197262 transitions. [2018-09-14 17:27:17,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 17:27:17,699 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 244 [2018-09-14 17:27:17,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:27:18,181 INFO L225 Difference]: With dead ends: 127812 [2018-09-14 17:27:18,181 INFO L226 Difference]: Without dead ends: 79594 [2018-09-14 17:27:18,391 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 497 GetRequests, 482 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2018-09-14 17:27:18,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79594 states. [2018-09-14 17:27:20,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79594 to 79124. [2018-09-14 17:27:20,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79124 states. [2018-09-14 17:27:20,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79124 states to 79124 states and 115418 transitions. [2018-09-14 17:27:20,554 INFO L78 Accepts]: Start accepts. Automaton has 79124 states and 115418 transitions. Word has length 244 [2018-09-14 17:27:20,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:27:20,554 INFO L480 AbstractCegarLoop]: Abstraction has 79124 states and 115418 transitions. [2018-09-14 17:27:20,554 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:27:20,555 INFO L276 IsEmpty]: Start isEmpty. Operand 79124 states and 115418 transitions. [2018-09-14 17:27:20,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-09-14 17:27:20,567 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:27:20,568 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:27:20,568 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:27:20,568 INFO L82 PathProgramCache]: Analyzing trace with hash -1263067852, now seen corresponding path program 1 times [2018-09-14 17:27:20,568 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:27:20,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:27:20,569 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:27:20,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:27:20,570 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:27:20,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:27:20,824 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 158 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:27:20,825 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:27:20,825 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:27:21,493 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:27:21,494 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:27:21,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:27:21,586 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:27:21,732 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 158 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:27:21,732 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:27:21,872 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 158 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:27:21,903 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:27:21,903 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 4 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 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:27:21,933 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:27:21,933 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:27:22,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:27:22,096 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:27:22,147 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 158 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:27:22,147 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:27:22,268 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 158 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:27:22,270 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:27:22,271 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-09-14 17:27:22,271 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:27:22,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 17:27:22,272 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 17:27:22,272 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-14 17:27:22,273 INFO L87 Difference]: Start difference. First operand 79124 states and 115418 transitions. Second operand 9 states. [2018-09-14 17:27:24,152 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-09-14 17:27:46,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:27:46,046 INFO L93 Difference]: Finished difference Result 289830 states and 647466 transitions. [2018-09-14 17:27:46,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-09-14 17:27:46,047 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 250 [2018-09-14 17:27:46,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:27:47,229 INFO L225 Difference]: With dead ends: 289830 [2018-09-14 17:27:47,230 INFO L226 Difference]: Without dead ends: 172087 [2018-09-14 17:27:47,858 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1025 GetRequests, 1000 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2018-09-14 17:27:47,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172087 states. [2018-09-14 17:27:52,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172087 to 167535. [2018-09-14 17:27:52,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167535 states. [2018-09-14 17:27:55,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167535 states to 167535 states and 267567 transitions. [2018-09-14 17:27:55,222 INFO L78 Accepts]: Start accepts. Automaton has 167535 states and 267567 transitions. Word has length 250 [2018-09-14 17:27:55,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:27:55,222 INFO L480 AbstractCegarLoop]: Abstraction has 167535 states and 267567 transitions. [2018-09-14 17:27:55,222 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 17:27:55,222 INFO L276 IsEmpty]: Start isEmpty. Operand 167535 states and 267567 transitions. [2018-09-14 17:27:55,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2018-09-14 17:27:55,237 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:27:55,238 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 17:27:55,238 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:27:55,238 INFO L82 PathProgramCache]: Analyzing trace with hash -1811334687, now seen corresponding path program 1 times [2018-09-14 17:27:55,239 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:27:55,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:27:55,240 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:27:55,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:27:55,240 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:27:55,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:27:55,595 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:27:55,853 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 78 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:27:55,854 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:27:55,854 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 [2018-09-14 17:27:55,863 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:27:55,863 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:27:55,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:27:55,955 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:27:56,123 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2018-09-14 17:27:56,124 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:27:56,257 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2018-09-14 17:27:56,283 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-14 17:27:56,283 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2018-09-14 17:27:56,283 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:27:56,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 17:27:56,284 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 17:27:56,284 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-09-14 17:27:56,284 INFO L87 Difference]: Start difference. First operand 167535 states and 267567 transitions. Second operand 3 states. [2018-09-14 17:28:05,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:28:05,856 INFO L93 Difference]: Finished difference Result 341232 states and 579182 transitions. [2018-09-14 17:28:05,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 17:28:05,856 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 299 [2018-09-14 17:28:05,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:28:08,197 INFO L225 Difference]: With dead ends: 341232 [2018-09-14 17:28:08,197 INFO L226 Difference]: Without dead ends: 196719 [2018-09-14 17:28:08,522 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 609 GetRequests, 598 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-09-14 17:28:08,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196719 states. [2018-09-14 17:28:12,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196719 to 196545. [2018-09-14 17:28:12,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196545 states. [2018-09-14 17:28:22,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196545 states to 196545 states and 313215 transitions. [2018-09-14 17:28:22,786 INFO L78 Accepts]: Start accepts. Automaton has 196545 states and 313215 transitions. Word has length 299 [2018-09-14 17:28:22,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:28:22,787 INFO L480 AbstractCegarLoop]: Abstraction has 196545 states and 313215 transitions. [2018-09-14 17:28:22,787 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 17:28:22,787 INFO L276 IsEmpty]: Start isEmpty. Operand 196545 states and 313215 transitions. [2018-09-14 17:28:22,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2018-09-14 17:28:22,805 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:28:22,805 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:28:22,806 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:28:22,806 INFO L82 PathProgramCache]: Analyzing trace with hash -1090723209, now seen corresponding path program 1 times [2018-09-14 17:28:22,806 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:28:22,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:28:22,807 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:28:22,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:28:22,807 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:28:22,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:28:23,109 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 84 proven. 76 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:28:23,109 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:28:23,109 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:28:23,119 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:28:23,119 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:28:23,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:28:23,218 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:28:23,320 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2018-09-14 17:28:23,321 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:28:23,495 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 84 proven. 76 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:28:23,516 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:28:23,516 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-09-14 17:28:23,516 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:28:23,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:28:23,517 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:28:23,518 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-09-14 17:28:23,518 INFO L87 Difference]: Start difference. First operand 196545 states and 313215 transitions. Second operand 5 states. [2018-09-14 17:28:33,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:28:33,407 INFO L93 Difference]: Finished difference Result 345329 states and 560654 transitions. [2018-09-14 17:28:33,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 17:28:33,408 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 329 [2018-09-14 17:28:33,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:28:34,075 INFO L225 Difference]: With dead ends: 345329 [2018-09-14 17:28:34,076 INFO L226 Difference]: Without dead ends: 149573 [2018-09-14 17:28:34,524 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 667 GetRequests, 652 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-09-14 17:28:34,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149573 states. [2018-09-14 17:28:37,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149573 to 147846. [2018-09-14 17:28:37,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147846 states. [2018-09-14 17:28:38,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147846 states to 147846 states and 203875 transitions. [2018-09-14 17:28:38,671 INFO L78 Accepts]: Start accepts. Automaton has 147846 states and 203875 transitions. Word has length 329 [2018-09-14 17:28:38,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:28:38,672 INFO L480 AbstractCegarLoop]: Abstraction has 147846 states and 203875 transitions. [2018-09-14 17:28:38,672 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:28:38,672 INFO L276 IsEmpty]: Start isEmpty. Operand 147846 states and 203875 transitions. [2018-09-14 17:28:38,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2018-09-14 17:28:38,700 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:28:38,701 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 17:28:38,701 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:28:38,701 INFO L82 PathProgramCache]: Analyzing trace with hash -1615734322, now seen corresponding path program 1 times [2018-09-14 17:28:38,702 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:28:38,702 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:28:38,702 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:28:38,702 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:28:38,703 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:28:38,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:28:38,974 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2018-09-14 17:28:38,974 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:28:38,974 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-14 17:28:38,974 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:28:38,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 17:28:38,975 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 17:28:38,975 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 17:28:38,975 INFO L87 Difference]: Start difference. First operand 147846 states and 203875 transitions. Second operand 3 states. [2018-09-14 17:28:46,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:28:46,369 INFO L93 Difference]: Finished difference Result 307737 states and 429445 transitions. [2018-09-14 17:28:46,369 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 17:28:46,369 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 443 [2018-09-14 17:28:46,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:28:46,853 INFO L225 Difference]: With dead ends: 307737 [2018-09-14 17:28:46,853 INFO L226 Difference]: Without dead ends: 160665 [2018-09-14 17:28:47,258 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 17:28:47,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160665 states. [2018-09-14 17:28:50,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160665 to 152659. [2018-09-14 17:28:50,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152659 states. [2018-09-14 17:28:51,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152659 states to 152659 states and 196610 transitions. [2018-09-14 17:28:51,642 INFO L78 Accepts]: Start accepts. Automaton has 152659 states and 196610 transitions. Word has length 443 [2018-09-14 17:28:51,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:28:51,643 INFO L480 AbstractCegarLoop]: Abstraction has 152659 states and 196610 transitions. [2018-09-14 17:28:51,643 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 17:28:51,643 INFO L276 IsEmpty]: Start isEmpty. Operand 152659 states and 196610 transitions. [2018-09-14 17:28:51,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1140 [2018-09-14 17:28:51,909 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:28:51,910 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:28:51,910 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:28:51,911 INFO L82 PathProgramCache]: Analyzing trace with hash -849084386, now seen corresponding path program 1 times [2018-09-14 17:28:51,911 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:28:51,912 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:28:51,912 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:28:51,912 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:28:51,912 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:28:52,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:28:53,550 INFO L134 CoverageAnalysis]: Checked inductivity of 930 backedges. 301 proven. 242 refuted. 0 times theorem prover too weak. 387 trivial. 0 not checked. [2018-09-14 17:28:53,551 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:28:53,551 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 [2018-09-14 17:28:53,560 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:28:53,560 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:28:53,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:28:53,857 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:28:55,292 INFO L134 CoverageAnalysis]: Checked inductivity of 930 backedges. 721 proven. 2 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2018-09-14 17:28:55,293 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:28:56,229 INFO L134 CoverageAnalysis]: Checked inductivity of 930 backedges. 301 proven. 242 refuted. 0 times theorem prover too weak. 387 trivial. 0 not checked. [2018-09-14 17:28:56,252 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:28:56,252 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 [2018-09-14 17:28:56,270 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:28:56,270 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:28:56,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:28:56,987 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:28:57,486 INFO L134 CoverageAnalysis]: Checked inductivity of 930 backedges. 721 proven. 2 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2018-09-14 17:28:57,487 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:28:58,179 INFO L134 CoverageAnalysis]: Checked inductivity of 930 backedges. 301 proven. 242 refuted. 0 times theorem prover too weak. 387 trivial. 0 not checked. [2018-09-14 17:28:58,183 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:28:58,184 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-14 17:28:58,184 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:28:58,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 17:28:58,186 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 17:28:58,186 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-14 17:28:58,186 INFO L87 Difference]: Start difference. First operand 152659 states and 196610 transitions. Second operand 9 states. Received shutdown request... [2018-09-14 17:29:10,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-09-14 17:29:10,847 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-14 17:29:10,853 WARN L206 ceAbstractionStarter]: Timeout [2018-09-14 17:29:10,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 05:29:10 BoogieIcfgContainer [2018-09-14 17:29:10,853 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-14 17:29:10,854 INFO L168 Benchmark]: Toolchain (without parser) took 221139.91 ms. Allocated memory was 1.5 GB in the beginning and 5.5 GB in the end (delta: 3.9 GB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -733.7 MB). Peak memory consumption was 3.2 GB. Max. memory is 7.1 GB. [2018-09-14 17:29:10,855 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-14 17:29:10,856 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2340.88 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-09-14 17:29:10,856 INFO L168 Benchmark]: Boogie Procedure Inliner took 255.68 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-09-14 17:29:10,858 INFO L168 Benchmark]: Boogie Preprocessor took 891.07 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 913.3 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 127.8 MB. Max. memory is 7.1 GB. [2018-09-14 17:29:10,859 INFO L168 Benchmark]: RCFGBuilder took 14091.30 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.6 GB in the end (delta: 646.3 MB). Peak memory consumption was 646.3 MB. Max. memory is 7.1 GB. [2018-09-14 17:29:10,859 INFO L168 Benchmark]: TraceAbstraction took 203552.13 ms. Allocated memory was 2.4 GB in the beginning and 5.5 GB in the end (delta: 3.0 GB). Free memory was 1.6 GB in the beginning and 2.1 GB in the end (delta: -504.3 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-09-14 17:29:10,864 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 2340.88 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 255.68 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 891.07 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 913.3 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 127.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 14091.30 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.6 GB in the end (delta: 646.3 MB). Peak memory consumption was 646.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 203552.13 ms. Allocated memory was 2.4 GB in the beginning and 5.5 GB in the end (delta: 3.0 GB). Free memory was 1.6 GB in the beginning and 2.1 GB in the end (delta: -504.3 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 138]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 138). Cancelled while BasicCegarLoop was constructing difference of abstraction (152659states) and FLOYD_HOARE automaton (currently 18 states, 9 states before enhancement), while ReachableStatesComputation was computing reachable states (97733 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 203.4s OverallTime, 11 OverallIterations, 5 TraceHistogramMax, 153.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3853 SDtfs, 35318 SDslu, 1861 SDs, 0 SdLazy, 61272 SolverSat, 15808 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 108.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7431 GetRequests, 7306 SyntacticMatches, 26 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 4.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=196545occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 35.4s AutomataMinimizationTime, 10 MinimizatonAttempts, 15450 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.7s SatisfiabilityAnalysisTime, 9.4s InterpolantComputationTime, 6987 NumberOfCodeBlocks, 6987 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 10612 ConstructedInterpolants, 0 QuantifiedInterpolants, 13419128 SizeOfPredicates, 4 NumberOfNonLiveVariables, 5432 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 25 InterpolantComputations, 10 PerfectInterpolantSequences, 6455/7609 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem12_label49_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-14_17-29-10-878.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem12_label49_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-14_17-29-10-878.csv Completed graceful shutdown