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/Problem10_label14_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-18 11:16:53,788 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-18 11:16:53,790 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-18 11:16:53,803 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-18 11:16:53,803 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-18 11:16:53,805 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-18 11:16:53,806 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-18 11:16:53,808 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-18 11:16:53,809 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-18 11:16:53,810 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-18 11:16:53,811 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-18 11:16:53,812 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-18 11:16:53,813 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-18 11:16:53,814 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-18 11:16:53,815 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-18 11:16:53,816 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-18 11:16:53,817 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-18 11:16:53,819 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-18 11:16:53,824 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-18 11:16:53,828 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-18 11:16:53,829 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-18 11:16:53,832 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-18 11:16:53,838 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-18 11:16:53,839 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-18 11:16:53,839 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-18 11:16:53,840 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-18 11:16:53,844 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-18 11:16:53,845 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-18 11:16:53,849 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-18 11:16:53,852 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-18 11:16:53,853 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-18 11:16:53,854 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-18 11:16:53,855 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-18 11:16:53,855 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-18 11:16:53,856 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-18 11:16:53,858 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-18 11:16:53,858 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 11:16:53,883 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-18 11:16:53,885 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-18 11:16:53,885 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-18 11:16:53,886 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-18 11:16:53,886 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-18 11:16:53,886 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-18 11:16:53,887 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-18 11:16:53,887 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-18 11:16:53,887 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-18 11:16:53,887 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-18 11:16:53,888 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-18 11:16:53,888 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-18 11:16:53,889 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-18 11:16:53,889 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-18 11:16:53,890 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-18 11:16:53,890 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-18 11:16:53,890 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-18 11:16:53,890 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-18 11:16:53,893 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-18 11:16:53,894 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-18 11:16:53,894 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-18 11:16:53,894 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-18 11:16:53,894 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-18 11:16:53,895 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-18 11:16:53,895 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 11:16:53,895 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-18 11:16:53,895 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-18 11:16:53,895 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-18 11:16:53,896 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-18 11:16:53,896 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-18 11:16:53,896 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-18 11:16:53,896 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-18 11:16:53,896 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-18 11:16:53,897 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-18 11:16:53,962 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-18 11:16:53,978 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-18 11:16:53,985 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-18 11:16:53,988 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-18 11:16:53,988 INFO L276 PluginConnector]: CDTParser initialized [2018-09-18 11:16:53,989 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label14_true-unreach-call.c [2018-09-18 11:16:54,331 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d516e57f1/ac80707caba64aa6a1f417bf4ae0bebe/FLAGc992749c2 [2018-09-18 11:16:54,606 INFO L277 CDTParser]: Found 1 translation units. [2018-09-18 11:16:54,607 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label14_true-unreach-call.c [2018-09-18 11:16:54,630 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d516e57f1/ac80707caba64aa6a1f417bf4ae0bebe/FLAGc992749c2 [2018-09-18 11:16:54,653 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d516e57f1/ac80707caba64aa6a1f417bf4ae0bebe [2018-09-18 11:16:54,666 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-18 11:16:54,670 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-18 11:16:54,671 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-18 11:16:54,672 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-18 11:16:54,680 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-18 11:16:54,681 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 11:16:54" (1/1) ... [2018-09-18 11:16:54,684 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6503a7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:16:54, skipping insertion in model container [2018-09-18 11:16:54,685 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 11:16:54" (1/1) ... [2018-09-18 11:16:54,698 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-18 11:16:55,161 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 11:16:55,179 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-18 11:16:55,343 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 11:16:55,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:16:55 WrapperNode [2018-09-18 11:16:55,404 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-18 11:16:55,405 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-18 11:16:55,405 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-18 11:16:55,405 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-18 11:16:55,415 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:16:55" (1/1) ... [2018-09-18 11:16:55,450 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:16:55" (1/1) ... [2018-09-18 11:16:55,507 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-18 11:16:55,507 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-18 11:16:55,507 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-18 11:16:55,507 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-18 11:16:55,677 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:16:55" (1/1) ... [2018-09-18 11:16:55,681 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:16:55" (1/1) ... [2018-09-18 11:16:55,688 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:16:55" (1/1) ... [2018-09-18 11:16:55,693 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:16:55" (1/1) ... [2018-09-18 11:16:55,738 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:16:55" (1/1) ... [2018-09-18 11:16:55,758 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:16:55" (1/1) ... [2018-09-18 11:16:55,779 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:16:55" (1/1) ... [2018-09-18 11:16:55,798 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-18 11:16:55,799 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-18 11:16:55,799 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-18 11:16:55,799 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-18 11:16:55,802 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:16:55" (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 11:16:55,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-18 11:16:55,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-18 11:16:55,877 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-18 11:16:55,877 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-18 11:16:55,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-18 11:16:55,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-18 11:16:55,877 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-18 11:16:55,877 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-18 11:16:58,848 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-18 11:16:58,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 11:16:58 BoogieIcfgContainer [2018-09-18 11:16:58,849 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-18 11:16:58,851 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-18 11:16:58,852 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-18 11:16:58,855 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-18 11:16:58,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 11:16:54" (1/3) ... [2018-09-18 11:16:58,856 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59f3be11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 11:16:58, skipping insertion in model container [2018-09-18 11:16:58,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:16:55" (2/3) ... [2018-09-18 11:16:58,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59f3be11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 11:16:58, skipping insertion in model container [2018-09-18 11:16:58,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 11:16:58" (3/3) ... [2018-09-18 11:16:58,859 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label14_true-unreach-call.c [2018-09-18 11:16:58,869 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-18 11:16:58,878 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-18 11:16:58,935 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-18 11:16:58,936 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-18 11:16:58,936 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-18 11:16:58,936 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-18 11:16:58,937 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-18 11:16:58,937 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-18 11:16:58,937 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-18 11:16:58,937 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-18 11:16:58,937 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-18 11:16:58,972 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2018-09-18 11:16:58,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-09-18 11:16:58,984 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:16:58,985 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] [2018-09-18 11:16:58,986 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:16:58,990 INFO L82 PathProgramCache]: Analyzing trace with hash -1440498332, now seen corresponding path program 1 times [2018-09-18 11:16:58,993 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:16:59,039 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:16:59,039 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:16:59,039 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:16:59,040 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:16:59,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:16:59,468 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 11:16:59,582 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 11:16:59,585 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:16:59,586 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-18 11:16:59,586 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:16:59,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 11:16:59,609 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 11:16:59,609 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 11:16:59,612 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 3 states. [2018-09-18 11:17:01,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:17:01,438 INFO L93 Difference]: Finished difference Result 574 states and 992 transitions. [2018-09-18 11:17:01,439 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 11:17:01,441 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2018-09-18 11:17:01,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:17:01,459 INFO L225 Difference]: With dead ends: 574 [2018-09-18 11:17:01,459 INFO L226 Difference]: Without dead ends: 356 [2018-09-18 11:17:01,467 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 11:17:01,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2018-09-18 11:17:01,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2018-09-18 11:17:01,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2018-09-18 11:17:01,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 609 transitions. [2018-09-18 11:17:01,581 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 609 transitions. Word has length 38 [2018-09-18 11:17:01,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:17:01,582 INFO L480 AbstractCegarLoop]: Abstraction has 356 states and 609 transitions. [2018-09-18 11:17:01,582 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 11:17:01,582 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 609 transitions. [2018-09-18 11:17:01,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-09-18 11:17:01,591 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:17:01,592 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:17:01,592 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:17:01,593 INFO L82 PathProgramCache]: Analyzing trace with hash 247043784, now seen corresponding path program 1 times [2018-09-18 11:17:01,593 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:17:01,594 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:17:01,594 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:17:01,595 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:17:01,595 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:17:01,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:17:02,067 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:17:02,067 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:17:02,068 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-18 11:17:02,068 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:17:02,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:17:02,070 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:17:02,071 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-18 11:17:02,071 INFO L87 Difference]: Start difference. First operand 356 states and 609 transitions. Second operand 5 states. [2018-09-18 11:17:05,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:17:05,049 INFO L93 Difference]: Finished difference Result 1140 states and 2022 transitions. [2018-09-18 11:17:05,052 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 11:17:05,052 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 158 [2018-09-18 11:17:05,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:17:05,060 INFO L225 Difference]: With dead ends: 1140 [2018-09-18 11:17:05,061 INFO L226 Difference]: Without dead ends: 790 [2018-09-18 11:17:05,066 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-09-18 11:17:05,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2018-09-18 11:17:05,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 784. [2018-09-18 11:17:05,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 784 states. [2018-09-18 11:17:05,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1300 transitions. [2018-09-18 11:17:05,116 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1300 transitions. Word has length 158 [2018-09-18 11:17:05,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:17:05,117 INFO L480 AbstractCegarLoop]: Abstraction has 784 states and 1300 transitions. [2018-09-18 11:17:05,117 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 11:17:05,117 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1300 transitions. [2018-09-18 11:17:05,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2018-09-18 11:17:05,123 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:17:05,124 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:17:05,124 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:17:05,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1650350691, now seen corresponding path program 1 times [2018-09-18 11:17:05,125 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:17:05,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:17:05,126 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:17:05,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:17:05,126 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:17:05,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:17:05,487 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:17:05,488 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:17:05,488 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 11:17:05,488 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:17:05,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 11:17:05,489 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 11:17:05,489 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 11:17:05,490 INFO L87 Difference]: Start difference. First operand 784 states and 1300 transitions. Second operand 6 states. [2018-09-18 11:17:09,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:17:09,210 INFO L93 Difference]: Finished difference Result 1975 states and 3367 transitions. [2018-09-18 11:17:09,210 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 11:17:09,210 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 165 [2018-09-18 11:17:09,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:17:09,218 INFO L225 Difference]: With dead ends: 1975 [2018-09-18 11:17:09,219 INFO L226 Difference]: Without dead ends: 1197 [2018-09-18 11:17:09,223 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 11:17:09,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1197 states. [2018-09-18 11:17:09,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1197 to 1177. [2018-09-18 11:17:09,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1177 states. [2018-09-18 11:17:09,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1754 transitions. [2018-09-18 11:17:09,274 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 1754 transitions. Word has length 165 [2018-09-18 11:17:09,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:17:09,274 INFO L480 AbstractCegarLoop]: Abstraction has 1177 states and 1754 transitions. [2018-09-18 11:17:09,275 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 11:17:09,275 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 1754 transitions. [2018-09-18 11:17:09,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2018-09-18 11:17:09,291 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:17:09,291 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:17:09,291 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:17:09,292 INFO L82 PathProgramCache]: Analyzing trace with hash -837763145, now seen corresponding path program 1 times [2018-09-18 11:17:09,292 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:17:09,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:17:09,293 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:17:09,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:17:09,293 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:17:09,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:17:10,004 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-09-18 11:17:10,455 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 131 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:17:10,456 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:17:10,456 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 11:17:10,472 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:17:10,473 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:17:10,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:17:10,571 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:17:11,087 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 131 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:17:11,087 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:17:11,537 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 131 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:17:11,559 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:17:11,560 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 11:17:11,578 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:17:11,579 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:17:11,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:17:11,761 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:17:12,232 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 131 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:17:12,232 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:17:12,392 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-09-18 11:17:12,560 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-09-18 11:17:13,046 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 131 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:17:13,049 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:17:13,049 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5, 5, 5] total 22 [2018-09-18 11:17:13,049 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:17:13,050 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-09-18 11:17:13,051 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-09-18 11:17:13,051 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=356, Unknown=0, NotChecked=0, Total=462 [2018-09-18 11:17:13,052 INFO L87 Difference]: Start difference. First operand 1177 states and 1754 transitions. Second operand 16 states. [2018-09-18 11:17:13,467 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 21 [2018-09-18 11:17:21,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:17:21,240 INFO L93 Difference]: Finished difference Result 3810 states and 6145 transitions. [2018-09-18 11:17:21,241 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-09-18 11:17:21,241 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 229 [2018-09-18 11:17:21,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:17:21,263 INFO L225 Difference]: With dead ends: 3810 [2018-09-18 11:17:21,263 INFO L226 Difference]: Without dead ends: 2639 [2018-09-18 11:17:21,278 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 980 GetRequests, 921 SyntacticMatches, 3 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 799 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=779, Invalid=2527, Unknown=0, NotChecked=0, Total=3306 [2018-09-18 11:17:21,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2639 states. [2018-09-18 11:17:21,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2639 to 2321. [2018-09-18 11:17:21,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2321 states. [2018-09-18 11:17:21,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2321 states to 2321 states and 3108 transitions. [2018-09-18 11:17:21,371 INFO L78 Accepts]: Start accepts. Automaton has 2321 states and 3108 transitions. Word has length 229 [2018-09-18 11:17:21,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:17:21,371 INFO L480 AbstractCegarLoop]: Abstraction has 2321 states and 3108 transitions. [2018-09-18 11:17:21,371 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-09-18 11:17:21,372 INFO L276 IsEmpty]: Start isEmpty. Operand 2321 states and 3108 transitions. [2018-09-18 11:17:21,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-09-18 11:17:21,380 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:17:21,380 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 11:17:21,381 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:17:21,381 INFO L82 PathProgramCache]: Analyzing trace with hash -1644210928, now seen corresponding path program 1 times [2018-09-18 11:17:21,381 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:17:21,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:17:21,382 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:17:21,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:17:21,383 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:17:21,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:17:21,677 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 140 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:17:21,677 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:17:21,677 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 11:17:21,687 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:17:21,687 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:17:21,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:17:21,766 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:17:21,906 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 140 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:17:21,907 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:17:22,042 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 140 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:17:22,064 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:17:22,064 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:17:22,081 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:17:22,081 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:17:22,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:17:22,239 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:17:22,395 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 140 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:17:22,395 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:17:22,711 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 140 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:17:22,714 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:17:22,714 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-09-18 11:17:22,714 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:17:22,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 11:17:22,715 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 11:17:22,715 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-18 11:17:22,716 INFO L87 Difference]: Start difference. First operand 2321 states and 3108 transitions. Second operand 9 states. [2018-09-18 11:17:25,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:17:25,335 INFO L93 Difference]: Finished difference Result 6950 states and 10487 transitions. [2018-09-18 11:17:25,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-18 11:17:25,335 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 244 [2018-09-18 11:17:25,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:17:25,348 INFO L225 Difference]: With dead ends: 6950 [2018-09-18 11:17:25,348 INFO L226 Difference]: Without dead ends: 1803 [2018-09-18 11:17:25,403 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 996 GetRequests, 973 SyntacticMatches, 5 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=126, Invalid=254, Unknown=0, NotChecked=0, Total=380 [2018-09-18 11:17:25,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1803 states. [2018-09-18 11:17:25,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1803 to 1637. [2018-09-18 11:17:25,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1637 states. [2018-09-18 11:17:25,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1637 states to 1637 states and 2042 transitions. [2018-09-18 11:17:25,465 INFO L78 Accepts]: Start accepts. Automaton has 1637 states and 2042 transitions. Word has length 244 [2018-09-18 11:17:25,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:17:25,465 INFO L480 AbstractCegarLoop]: Abstraction has 1637 states and 2042 transitions. [2018-09-18 11:17:25,466 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 11:17:25,466 INFO L276 IsEmpty]: Start isEmpty. Operand 1637 states and 2042 transitions. [2018-09-18 11:17:25,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2018-09-18 11:17:25,472 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:17:25,473 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 11:17:25,473 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:17:25,474 INFO L82 PathProgramCache]: Analyzing trace with hash 816060380, now seen corresponding path program 1 times [2018-09-18 11:17:25,474 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:17:25,475 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:17:25,475 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:17:25,475 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:17:25,475 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:17:25,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:17:25,722 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 11:17:26,116 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 62 proven. 91 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 11:17:26,117 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:17:26,117 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:17:26,142 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:17:26,142 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:17:26,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:17:26,229 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:17:26,718 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-09-18 11:17:26,718 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:17:26,907 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 62 proven. 91 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 11:17:26,927 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 11:17:26,928 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-09-18 11:17:26,928 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:17:26,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:17:26,929 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:17:26,929 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-09-18 11:17:26,929 INFO L87 Difference]: Start difference. First operand 1637 states and 2042 transitions. Second operand 5 states. [2018-09-18 11:17:27,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:17:27,711 INFO L93 Difference]: Finished difference Result 2809 states and 3511 transitions. [2018-09-18 11:17:27,711 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 11:17:27,711 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 254 [2018-09-18 11:17:27,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:17:27,719 INFO L225 Difference]: With dead ends: 2809 [2018-09-18 11:17:27,719 INFO L226 Difference]: Without dead ends: 1478 [2018-09-18 11:17:27,722 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 517 GetRequests, 502 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-09-18 11:17:27,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1478 states. [2018-09-18 11:17:27,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1478 to 1451. [2018-09-18 11:17:27,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1451 states. [2018-09-18 11:17:27,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1451 states to 1451 states and 1704 transitions. [2018-09-18 11:17:27,763 INFO L78 Accepts]: Start accepts. Automaton has 1451 states and 1704 transitions. Word has length 254 [2018-09-18 11:17:27,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:17:27,763 INFO L480 AbstractCegarLoop]: Abstraction has 1451 states and 1704 transitions. [2018-09-18 11:17:27,763 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 11:17:27,764 INFO L276 IsEmpty]: Start isEmpty. Operand 1451 states and 1704 transitions. [2018-09-18 11:17:27,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2018-09-18 11:17:27,773 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:17:27,774 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:17:27,774 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:17:27,774 INFO L82 PathProgramCache]: Analyzing trace with hash -1129393588, now seen corresponding path program 1 times [2018-09-18 11:17:27,774 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:17:27,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:17:27,775 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:17:27,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:17:27,775 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:17:27,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:17:29,319 WARN L178 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2018-09-18 11:17:29,675 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 285 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:17:29,675 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:17:29,676 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 11:17:29,683 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:17:29,684 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:17:29,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:17:29,776 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:17:32,877 WARN L178 SmtUtils]: Spent 2.84 s on a formula simplification. DAG size of input: 90 DAG size of output: 32 [2018-09-18 11:17:33,460 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 331 proven. 2 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-09-18 11:17:33,461 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:17:34,557 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:34,836 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 118 [2018-09-18 11:17:36,532 WARN L178 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 50 [2018-09-18 11:17:36,536 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,540 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,544 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,548 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,552 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,556 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,561 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,565 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,569 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,573 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,577 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,581 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,584 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,588 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,592 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,596 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,600 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,604 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,607 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,611 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,615 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,619 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,623 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,627 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,631 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,635 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,639 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,643 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,647 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,651 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,654 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,658 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,662 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,666 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,669 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,673 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,677 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,680 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,684 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,688 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,691 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,695 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,698 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,702 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,706 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,709 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,713 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,717 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,720 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,724 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,728 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,731 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,735 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,739 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,742 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,746 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,750 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,753 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,757 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,761 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,764 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,768 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,771 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,775 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,779 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,783 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,786 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,790 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,794 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,798 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,802 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,806 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,809 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,813 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,817 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,821 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,825 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,830 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,834 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,837 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,841 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,844 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,848 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,853 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,857 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,861 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,865 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,868 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,872 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,876 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,880 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,884 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,888 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,892 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,895 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,899 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,902 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,906 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,910 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,914 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,918 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,922 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,927 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,931 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,934 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,938 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,942 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:36,946 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:38,221 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 99 proven. 261 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 11:17:38,243 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:17:38,243 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 11:17:38,259 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:17:38,259 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:17:38,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:17:38,488 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:17:39,525 WARN L178 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 33 [2018-09-18 11:17:40,661 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-09-18 11:17:40,840 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 331 proven. 2 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-09-18 11:17:40,840 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:17:41,052 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-09-18 11:17:41,222 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-09-18 11:17:41,652 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:41,704 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 26 [2018-09-18 11:17:41,819 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:41,822 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:41,825 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:41,829 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:41,835 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:41,838 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:41,842 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:41,845 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:41,851 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:41,854 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:41,857 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:41,862 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:41,866 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:41,869 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:41,872 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:41,875 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:41,878 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:41,881 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:41,884 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:41,888 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:41,891 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:41,894 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:41,897 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:41,901 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:41,904 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:41,907 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:41,910 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:41,913 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:41,916 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:41,920 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:41,923 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:41,926 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:41,929 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:41,932 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:41,936 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:41,939 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:41,942 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:41,945 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:41,948 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:41,951 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:41,954 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:41,957 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:41,960 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:41,963 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:41,967 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:41,976 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:41,979 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:41,982 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:41,986 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:41,989 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:41,992 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:41,995 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:41,998 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:42,001 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:42,004 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:42,007 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:42,010 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:42,013 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:42,016 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:42,019 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:42,022 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:42,025 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:42,028 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:42,031 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:42,035 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:42,038 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:42,041 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:42,044 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:42,047 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:42,050 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:42,053 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:42,056 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:42,059 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:42,062 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:42,065 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:42,068 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:42,071 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:42,074 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:42,078 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:42,081 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:42,084 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:42,087 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:42,090 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:42,093 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:42,096 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:42,099 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:42,102 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:42,105 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:42,108 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:42,111 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:42,114 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:42,117 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:42,120 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:42,124 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:42,128 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:42,131 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:42,134 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:42,137 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:42,140 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:42,143 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:42,146 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:42,149 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:42,151 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:42,154 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:42,157 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:42,160 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:42,163 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:42,166 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:17:43,102 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 99 proven. 261 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 11:17:43,104 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:17:43,105 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 8, 8, 8, 8] total 35 [2018-09-18 11:17:43,105 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:17:43,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-09-18 11:17:43,107 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-09-18 11:17:43,107 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1034, Unknown=0, NotChecked=0, Total=1190 [2018-09-18 11:17:43,107 INFO L87 Difference]: Start difference. First operand 1451 states and 1704 transitions. Second operand 23 states. [2018-09-18 11:17:51,323 WARN L178 SmtUtils]: Spent 4.88 s on a formula simplification. DAG size of input: 57 DAG size of output: 42 [2018-09-18 11:18:06,379 WARN L178 SmtUtils]: Spent 3.17 s on a formula simplification. DAG size of input: 52 DAG size of output: 37 [2018-09-18 11:18:48,786 WARN L178 SmtUtils]: Spent 6.86 s on a formula simplification. DAG size of input: 55 DAG size of output: 40 [2018-09-18 11:18:58,656 WARN L178 SmtUtils]: Spent 3.36 s on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2018-09-18 11:19:36,476 WARN L178 SmtUtils]: Spent 2.82 s on a formula simplification. DAG size of input: 75 DAG size of output: 44 [2018-09-18 11:19:58,772 WARN L178 SmtUtils]: Spent 4.15 s on a formula simplification. DAG size of input: 74 DAG size of output: 37 [2018-09-18 11:20:32,151 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 33 Received shutdown request... [2018-09-18 11:21:19,357 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-09-18 11:21:19,358 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-18 11:21:19,363 WARN L206 ceAbstractionStarter]: Timeout [2018-09-18 11:21:19,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 11:21:19 BoogieIcfgContainer [2018-09-18 11:21:19,363 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-18 11:21:19,364 INFO L168 Benchmark]: Toolchain (without parser) took 264696.86 ms. Allocated memory was 1.5 GB in the beginning and 3.0 GB in the end (delta: 1.5 GB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -406.4 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-09-18 11:21:19,365 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. [2018-09-18 11:21:19,365 INFO L168 Benchmark]: CACSL2BoogieTranslator took 733.05 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-09-18 11:21:19,366 INFO L168 Benchmark]: Boogie Procedure Inliner took 102.08 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 11:21:19,366 INFO L168 Benchmark]: Boogie Preprocessor took 291.54 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 767.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -860.0 MB). Peak memory consumption was 29.0 MB. Max. memory is 7.1 GB. [2018-09-18 11:21:19,367 INFO L168 Benchmark]: RCFGBuilder took 3050.43 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: 110.1 MB). Peak memory consumption was 110.1 MB. Max. memory is 7.1 GB. [2018-09-18 11:21:19,368 INFO L168 Benchmark]: TraceAbstraction took 260512.14 ms. Allocated memory was 2.3 GB in the beginning and 3.0 GB in the end (delta: 711.5 MB). Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 290.7 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-09-18 11:21:19,375 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 733.05 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 102.08 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 291.54 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 767.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -860.0 MB). Peak memory consumption was 29.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3050.43 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: 110.1 MB). Peak memory consumption was 110.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 260512.14 ms. Allocated memory was 2.3 GB in the beginning and 3.0 GB in the end (delta: 711.5 MB). Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 290.7 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 97). Cancelled while BasicCegarLoop was constructing difference of abstraction (1451states) and FLOYD_HOARE automaton (currently 105 states, 23 states before enhancement), while ReachableStatesComputation was computing reachable states (5145 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 216 locations, 1 error locations. TIMEOUT Result, 260.4s OverallTime, 7 OverallIterations, 4 TraceHistogramMax, 236.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 586 SDtfs, 17546 SDslu, 1397 SDs, 0 SdLazy, 17449 SolverSat, 4659 SolverUnsat, 83 SolverUnknown, 0 SolverNotchecked, 197.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4063 GetRequests, 3805 SyntacticMatches, 25 SemanticMatches, 233 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7380 ImplicationChecksByTransitivity, 45.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2321occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 6 MinimizatonAttempts, 537 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 21.1s InterpolantComputationTime, 3344 NumberOfCodeBlocks, 3344 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 5227 ConstructedInterpolants, 252 QuantifiedInterpolants, 13773043 SizeOfPredicates, 5 NumberOfNonLiveVariables, 3197 ConjunctsInSsa, 56 ConjunctsInUnsatCore, 21 InterpolantComputations, 4 PerfectInterpolantSequences, 2928/3736 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/Problem10_label14_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-18_11-21-19-394.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem10_label14_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-18_11-21-19-394.csv Completed graceful shutdown