java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label25_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-14 17:12:11,770 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-14 17:12:11,773 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-14 17:12:11,787 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-14 17:12:11,788 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-14 17:12:11,789 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-14 17:12:11,793 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-14 17:12:11,795 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-14 17:12:11,798 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-14 17:12:11,799 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-14 17:12:11,800 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-14 17:12:11,801 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-14 17:12:11,802 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-14 17:12:11,805 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-14 17:12:11,806 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-14 17:12:11,807 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-14 17:12:11,811 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-14 17:12:11,814 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-14 17:12:11,816 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-14 17:12:11,818 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-14 17:12:11,820 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-14 17:12:11,821 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-14 17:12:11,825 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-14 17:12:11,826 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-14 17:12:11,826 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-14 17:12:11,827 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-14 17:12:11,828 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-14 17:12:11,829 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-14 17:12:11,830 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-14 17:12:11,833 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-14 17:12:11,833 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-14 17:12:11,834 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-14 17:12:11,834 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-14 17:12:11,834 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-14 17:12:11,837 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-14 17:12:11,838 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-14 17:12:11,838 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-14 17:12:11,859 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-14 17:12:11,861 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-14 17:12:11,862 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-14 17:12:11,862 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-14 17:12:11,862 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-14 17:12:11,862 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-14 17:12:11,863 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-14 17:12:11,863 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-14 17:12:11,863 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-14 17:12:11,863 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-14 17:12:11,863 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-14 17:12:11,864 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-14 17:12:11,865 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-14 17:12:11,865 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-14 17:12:11,865 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-14 17:12:11,866 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-14 17:12:11,866 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-14 17:12:11,866 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-14 17:12:11,866 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-14 17:12:11,866 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-14 17:12:11,867 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-14 17:12:11,867 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-14 17:12:11,867 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-14 17:12:11,867 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 17:12:11,868 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-14 17:12:11,869 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-14 17:12:11,869 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-14 17:12:11,869 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-14 17:12:11,869 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-14 17:12:11,870 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-14 17:12:11,870 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-14 17:12:11,870 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-14 17:12:11,870 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-14 17:12:11,915 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-14 17:12:11,932 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-14 17:12:11,939 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-14 17:12:11,940 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-14 17:12:11,941 INFO L276 PluginConnector]: CDTParser initialized [2018-09-14 17:12:11,942 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label25_true-unreach-call.c [2018-09-14 17:12:12,303 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6359e435c/9a2f540d4012423789627a6cc12ea058/FLAG3e11f0984 [2018-09-14 17:12:12,681 INFO L277 CDTParser]: Found 1 translation units. [2018-09-14 17:12:12,682 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label25_true-unreach-call.c [2018-09-14 17:12:12,702 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6359e435c/9a2f540d4012423789627a6cc12ea058/FLAG3e11f0984 [2018-09-14 17:12:12,718 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6359e435c/9a2f540d4012423789627a6cc12ea058 [2018-09-14 17:12:12,729 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-14 17:12:12,733 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-14 17:12:12,734 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-14 17:12:12,734 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-14 17:12:12,741 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-14 17:12:12,742 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 05:12:12" (1/1) ... [2018-09-14 17:12:12,746 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56aae051 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:12:12, skipping insertion in model container [2018-09-14 17:12:12,746 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 05:12:12" (1/1) ... [2018-09-14 17:12:12,759 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-14 17:12:13,363 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 17:12:13,386 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-14 17:12:13,587 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 17:12:13,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:12:13 WrapperNode [2018-09-14 17:12:13,654 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-14 17:12:13,655 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-14 17:12:13,655 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-14 17:12:13,656 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-14 17:12:13,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:12:13" (1/1) ... [2018-09-14 17:12:13,700 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:12:13" (1/1) ... [2018-09-14 17:12:13,798 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-14 17:12:13,798 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-14 17:12:13,798 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-14 17:12:13,799 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-14 17:12:14,052 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:12:13" (1/1) ... [2018-09-14 17:12:14,053 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:12:13" (1/1) ... [2018-09-14 17:12:14,069 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:12:13" (1/1) ... [2018-09-14 17:12:14,069 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:12:13" (1/1) ... [2018-09-14 17:12:14,130 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:12:13" (1/1) ... [2018-09-14 17:12:14,159 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:12:13" (1/1) ... [2018-09-14 17:12:14,184 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:12:13" (1/1) ... [2018-09-14 17:12:14,202 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-14 17:12:14,203 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-14 17:12:14,203 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-14 17:12:14,203 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-14 17:12:14,204 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:12:13" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 17:12:14,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-14 17:12:14,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-14 17:12:14,279 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-14 17:12:14,279 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-14 17:12:14,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-14 17:12:14,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-14 17:12:14,280 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-14 17:12:14,280 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-14 17:12:19,105 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-14 17:12:19,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 05:12:19 BoogieIcfgContainer [2018-09-14 17:12:19,106 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-14 17:12:19,107 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-14 17:12:19,108 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-14 17:12:19,112 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-14 17:12:19,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 05:12:12" (1/3) ... [2018-09-14 17:12:19,114 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75831028 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 05:12:19, skipping insertion in model container [2018-09-14 17:12:19,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:12:13" (2/3) ... [2018-09-14 17:12:19,114 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75831028 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 05:12:19, skipping insertion in model container [2018-09-14 17:12:19,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 05:12:19" (3/3) ... [2018-09-14 17:12:19,118 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label25_true-unreach-call.c [2018-09-14 17:12:19,129 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-14 17:12:19,141 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-14 17:12:19,209 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-14 17:12:19,210 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-14 17:12:19,210 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-14 17:12:19,211 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-14 17:12:19,211 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-14 17:12:19,211 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-14 17:12:19,211 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-14 17:12:19,211 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-14 17:12:19,212 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-14 17:12:19,240 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-09-14 17:12:19,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-09-14 17:12:19,249 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:12:19,251 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] [2018-09-14 17:12:19,252 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:12:19,258 INFO L82 PathProgramCache]: Analyzing trace with hash 1384704100, now seen corresponding path program 1 times [2018-09-14 17:12:19,261 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:12:19,312 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:12:19,312 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:12:19,312 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:12:19,313 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:12:19,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:12:19,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:12:19,727 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:12:19,727 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 17:12:19,728 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:12:19,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 17:12:19,750 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 17:12:19,750 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:12:19,753 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-09-14 17:12:23,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:12:23,184 INFO L93 Difference]: Finished difference Result 996 states and 1776 transitions. [2018-09-14 17:12:23,185 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 17:12:23,186 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2018-09-14 17:12:23,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:12:23,210 INFO L225 Difference]: With dead ends: 996 [2018-09-14 17:12:23,211 INFO L226 Difference]: Without dead ends: 697 [2018-09-14 17:12:23,221 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:12:23,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2018-09-14 17:12:23,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 481. [2018-09-14 17:12:23,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 481 states. [2018-09-14 17:12:23,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 742 transitions. [2018-09-14 17:12:23,317 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 742 transitions. Word has length 38 [2018-09-14 17:12:23,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:12:23,318 INFO L480 AbstractCegarLoop]: Abstraction has 481 states and 742 transitions. [2018-09-14 17:12:23,318 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 17:12:23,318 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 742 transitions. [2018-09-14 17:12:23,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-09-14 17:12:23,325 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:12:23,325 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] [2018-09-14 17:12:23,325 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:12:23,326 INFO L82 PathProgramCache]: Analyzing trace with hash -331878893, now seen corresponding path program 1 times [2018-09-14 17:12:23,326 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:12:23,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:12:23,328 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:12:23,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:12:23,328 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:12:23,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:12:23,718 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:12:23,719 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:12:23,719 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 17:12:23,719 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:12:23,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:12:23,722 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:12:23,722 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:12:23,722 INFO L87 Difference]: Start difference. First operand 481 states and 742 transitions. Second operand 6 states. [2018-09-14 17:12:27,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:12:27,627 INFO L93 Difference]: Finished difference Result 1725 states and 2777 transitions. [2018-09-14 17:12:27,634 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:12:27,635 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 111 [2018-09-14 17:12:27,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:12:27,647 INFO L225 Difference]: With dead ends: 1725 [2018-09-14 17:12:27,647 INFO L226 Difference]: Without dead ends: 1250 [2018-09-14 17:12:27,655 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 [2018-09-14 17:12:27,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2018-09-14 17:12:27,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 1231. [2018-09-14 17:12:27,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1231 states. [2018-09-14 17:12:27,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1231 states to 1231 states and 1812 transitions. [2018-09-14 17:12:27,727 INFO L78 Accepts]: Start accepts. Automaton has 1231 states and 1812 transitions. Word has length 111 [2018-09-14 17:12:27,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:12:27,728 INFO L480 AbstractCegarLoop]: Abstraction has 1231 states and 1812 transitions. [2018-09-14 17:12:27,728 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:12:27,728 INFO L276 IsEmpty]: Start isEmpty. Operand 1231 states and 1812 transitions. [2018-09-14 17:12:27,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-09-14 17:12:27,731 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:12:27,732 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] [2018-09-14 17:12:27,733 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:12:27,733 INFO L82 PathProgramCache]: Analyzing trace with hash -689587928, now seen corresponding path program 1 times [2018-09-14 17:12:27,733 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:12:27,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:12:27,734 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:12:27,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:12:27,735 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:12:27,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:12:27,910 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:12:27,910 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:12:27,911 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 17:12:27,911 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:12:27,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 17:12:27,912 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 17:12:27,912 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:12:27,912 INFO L87 Difference]: Start difference. First operand 1231 states and 1812 transitions. Second operand 4 states. [2018-09-14 17:12:30,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:12:30,850 INFO L93 Difference]: Finished difference Result 3240 states and 4918 transitions. [2018-09-14 17:12:30,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 17:12:30,857 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 112 [2018-09-14 17:12:30,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:12:30,872 INFO L225 Difference]: With dead ends: 3240 [2018-09-14 17:12:30,872 INFO L226 Difference]: Without dead ends: 2015 [2018-09-14 17:12:30,881 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:12:30,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2015 states. [2018-09-14 17:12:30,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2015 to 2000. [2018-09-14 17:12:30,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2000 states. [2018-09-14 17:12:30,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2000 states to 2000 states and 2897 transitions. [2018-09-14 17:12:30,959 INFO L78 Accepts]: Start accepts. Automaton has 2000 states and 2897 transitions. Word has length 112 [2018-09-14 17:12:30,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:12:30,960 INFO L480 AbstractCegarLoop]: Abstraction has 2000 states and 2897 transitions. [2018-09-14 17:12:30,960 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 17:12:30,960 INFO L276 IsEmpty]: Start isEmpty. Operand 2000 states and 2897 transitions. [2018-09-14 17:12:30,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-09-14 17:12:30,972 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:12:30,973 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] [2018-09-14 17:12:30,973 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:12:30,975 INFO L82 PathProgramCache]: Analyzing trace with hash -2107878529, now seen corresponding path program 1 times [2018-09-14 17:12:30,975 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:12:30,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:12:30,976 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:12:30,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:12:30,976 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:12:31,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:12:31,367 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:12:31,367 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:12:31,367 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 17:12:31,367 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:12:31,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:12:31,368 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:12:31,368 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:12:31,369 INFO L87 Difference]: Start difference. First operand 2000 states and 2897 transitions. Second operand 6 states. [2018-09-14 17:12:37,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:12:37,201 INFO L93 Difference]: Finished difference Result 7663 states and 13269 transitions. [2018-09-14 17:12:37,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-14 17:12:37,202 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 137 [2018-09-14 17:12:37,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:12:37,269 INFO L225 Difference]: With dead ends: 7663 [2018-09-14 17:12:37,269 INFO L226 Difference]: Without dead ends: 5669 [2018-09-14 17:12:37,339 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-09-14 17:12:37,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5669 states. [2018-09-14 17:12:37,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5669 to 5142. [2018-09-14 17:12:37,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5142 states. [2018-09-14 17:12:37,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5142 states to 5142 states and 7307 transitions. [2018-09-14 17:12:37,665 INFO L78 Accepts]: Start accepts. Automaton has 5142 states and 7307 transitions. Word has length 137 [2018-09-14 17:12:37,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:12:37,665 INFO L480 AbstractCegarLoop]: Abstraction has 5142 states and 7307 transitions. [2018-09-14 17:12:37,666 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:12:37,666 INFO L276 IsEmpty]: Start isEmpty. Operand 5142 states and 7307 transitions. [2018-09-14 17:12:37,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-09-14 17:12:37,674 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:12:37,675 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:12:37,675 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:12:37,675 INFO L82 PathProgramCache]: Analyzing trace with hash -1631754857, now seen corresponding path program 1 times [2018-09-14 17:12:37,675 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:12:37,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:12:37,676 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:12:37,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:12:37,677 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:12:37,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:12:38,176 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 132 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:12:38,176 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:12:38,177 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:12:38,196 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:12:38,196 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:12:38,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:12:38,309 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:12:38,632 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-09-14 17:12:38,632 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:12:38,861 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-09-14 17:12:38,891 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-14 17:12:38,892 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2018-09-14 17:12:38,892 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:12:38,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 17:12:38,893 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 17:12:38,893 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-09-14 17:12:38,894 INFO L87 Difference]: Start difference. First operand 5142 states and 7307 transitions. Second operand 3 states. [2018-09-14 17:12:41,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:12:41,343 INFO L93 Difference]: Finished difference Result 12524 states and 19451 transitions. [2018-09-14 17:12:41,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 17:12:41,350 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 185 [2018-09-14 17:12:41,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:12:41,404 INFO L225 Difference]: With dead ends: 12524 [2018-09-14 17:12:41,404 INFO L226 Difference]: Without dead ends: 7388 [2018-09-14 17:12:41,447 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 369 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-09-14 17:12:41,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7388 states. [2018-09-14 17:12:41,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7388 to 7388. [2018-09-14 17:12:41,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7388 states. [2018-09-14 17:12:41,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7388 states to 7388 states and 10698 transitions. [2018-09-14 17:12:41,693 INFO L78 Accepts]: Start accepts. Automaton has 7388 states and 10698 transitions. Word has length 185 [2018-09-14 17:12:41,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:12:41,694 INFO L480 AbstractCegarLoop]: Abstraction has 7388 states and 10698 transitions. [2018-09-14 17:12:41,694 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 17:12:41,694 INFO L276 IsEmpty]: Start isEmpty. Operand 7388 states and 10698 transitions. [2018-09-14 17:12:41,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2018-09-14 17:12:41,710 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:12:41,710 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:12:41,711 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:12:41,711 INFO L82 PathProgramCache]: Analyzing trace with hash 2031421955, now seen corresponding path program 1 times [2018-09-14 17:12:41,711 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:12:41,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:12:41,712 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:12:41,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:12:41,712 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:12:41,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:12:42,280 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-09-14 17:12:42,556 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 16 [2018-09-14 17:12:42,654 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 62 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:12:42,655 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:12:42,655 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:12:42,662 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:12:42,663 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:12:42,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:12:42,741 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:12:42,860 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-09-14 17:12:42,860 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:12:43,095 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 37 [2018-09-14 17:12:43,560 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 62 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:12:43,581 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:12:43,581 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 5] total 11 [2018-09-14 17:12:43,581 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:12:43,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:12:43,582 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:12:43,582 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-14 17:12:43,582 INFO L87 Difference]: Start difference. First operand 7388 states and 10698 transitions. Second operand 5 states. [2018-09-14 17:12:47,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:12:47,631 INFO L93 Difference]: Finished difference Result 17325 states and 24870 transitions. [2018-09-14 17:12:47,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:12:47,631 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 207 [2018-09-14 17:12:47,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:12:47,696 INFO L225 Difference]: With dead ends: 17325 [2018-09-14 17:12:47,697 INFO L226 Difference]: Without dead ends: 9748 [2018-09-14 17:12:47,730 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 423 GetRequests, 411 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-09-14 17:12:47,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9748 states. [2018-09-14 17:12:48,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9748 to 9699. [2018-09-14 17:12:48,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9699 states. [2018-09-14 17:12:48,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9699 states to 9699 states and 13739 transitions. [2018-09-14 17:12:48,060 INFO L78 Accepts]: Start accepts. Automaton has 9699 states and 13739 transitions. Word has length 207 [2018-09-14 17:12:48,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:12:48,060 INFO L480 AbstractCegarLoop]: Abstraction has 9699 states and 13739 transitions. [2018-09-14 17:12:48,061 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:12:48,061 INFO L276 IsEmpty]: Start isEmpty. Operand 9699 states and 13739 transitions. [2018-09-14 17:12:48,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-09-14 17:12:48,081 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:12:48,081 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:12:48,082 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:12:48,082 INFO L82 PathProgramCache]: Analyzing trace with hash -1119037538, now seen corresponding path program 1 times [2018-09-14 17:12:48,082 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:12:48,083 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:12:48,083 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:12:48,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:12:48,084 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:12:48,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:12:48,737 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-09-14 17:12:48,738 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:12:48,738 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:12:48,746 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:12:48,746 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:12:48,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:12:48,837 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:12:49,511 WARN L178 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 35 [2018-09-14 17:12:49,720 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-09-14 17:12:49,720 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:12:50,380 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-09-14 17:12:50,400 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:12:50,400 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 11 [2018-09-14 17:12:50,401 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:12:50,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:12:50,402 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:12:50,402 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-09-14 17:12:50,402 INFO L87 Difference]: Start difference. First operand 9699 states and 13739 transitions. Second operand 6 states. [2018-09-14 17:12:55,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:12:55,371 INFO L93 Difference]: Finished difference Result 25161 states and 37387 transitions. [2018-09-14 17:12:55,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-14 17:12:55,371 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 250 [2018-09-14 17:12:55,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:12:55,449 INFO L225 Difference]: With dead ends: 25161 [2018-09-14 17:12:55,449 INFO L226 Difference]: Without dead ends: 15468 [2018-09-14 17:12:55,495 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 495 SyntacticMatches, 6 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-09-14 17:12:55,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15468 states. [2018-09-14 17:12:55,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15468 to 15466. [2018-09-14 17:12:55,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15466 states. [2018-09-14 17:12:55,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15466 states to 15466 states and 22434 transitions. [2018-09-14 17:12:55,931 INFO L78 Accepts]: Start accepts. Automaton has 15466 states and 22434 transitions. Word has length 250 [2018-09-14 17:12:55,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:12:55,931 INFO L480 AbstractCegarLoop]: Abstraction has 15466 states and 22434 transitions. [2018-09-14 17:12:55,931 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:12:55,932 INFO L276 IsEmpty]: Start isEmpty. Operand 15466 states and 22434 transitions. [2018-09-14 17:12:55,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2018-09-14 17:12:55,988 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:12:55,989 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 17:12:55,989 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:12:55,989 INFO L82 PathProgramCache]: Analyzing trace with hash -1090686184, now seen corresponding path program 1 times [2018-09-14 17:12:55,990 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:12:55,990 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:12:55,991 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:12:55,991 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:12:55,991 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:12:56,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:12:56,505 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2018-09-14 17:12:56,505 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:12:56,505 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 17:12:56,506 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:12:56,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 17:12:56,506 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 17:12:56,507 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:12:56,507 INFO L87 Difference]: Start difference. First operand 15466 states and 22434 transitions. Second operand 4 states. [2018-09-14 17:13:00,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:13:00,667 INFO L93 Difference]: Finished difference Result 36941 states and 59934 transitions. [2018-09-14 17:13:00,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 17:13:00,668 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 347 [2018-09-14 17:13:00,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:13:00,782 INFO L225 Difference]: With dead ends: 36941 [2018-09-14 17:13:00,783 INFO L226 Difference]: Without dead ends: 21481 [2018-09-14 17:13:01,181 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:13:01,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21481 states. [2018-09-14 17:13:01,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21481 to 21450. [2018-09-14 17:13:01,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21450 states. [2018-09-14 17:13:01,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21450 states to 21450 states and 30672 transitions. [2018-09-14 17:13:01,753 INFO L78 Accepts]: Start accepts. Automaton has 21450 states and 30672 transitions. Word has length 347 [2018-09-14 17:13:01,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:13:01,754 INFO L480 AbstractCegarLoop]: Abstraction has 21450 states and 30672 transitions. [2018-09-14 17:13:01,755 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 17:13:01,755 INFO L276 IsEmpty]: Start isEmpty. Operand 21450 states and 30672 transitions. [2018-09-14 17:13:01,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2018-09-14 17:13:01,820 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:13:01,820 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 17:13:01,821 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:13:01,821 INFO L82 PathProgramCache]: Analyzing trace with hash 38563041, now seen corresponding path program 1 times [2018-09-14 17:13:01,821 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:13:01,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:13:01,822 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:13:01,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:13:01,822 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:13:01,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:13:02,890 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-09-14 17:13:02,999 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 69 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2018-09-14 17:13:03,000 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:13:03,000 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:13:03,007 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:13:03,007 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:13:03,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:13:03,112 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:13:05,772 WARN L178 SmtUtils]: Spent 2.40 s on a formula simplification. DAG size of input: 42 DAG size of output: 32 [2018-09-14 17:13:05,969 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 11 proven. 58 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2018-09-14 17:13:05,969 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:13:06,434 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:06,484 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:06,540 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:06,596 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:06,638 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:06,706 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:06,759 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:06,839 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:06,878 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:06,916 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:06,957 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:07,002 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:07,043 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:07,083 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:07,225 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:07,281 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:07,321 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:07,366 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:07,412 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:07,458 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:07,512 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:07,577 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:07,618 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:07,656 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:07,740 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:07,782 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:07,821 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:07,872 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:07,917 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:07,969 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:08,009 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:08,084 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:08,129 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:08,192 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:08,512 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:08,627 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:08,667 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:09,004 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:09,145 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:09,199 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:09,242 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:09,283 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:09,321 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:09,360 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:09,473 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:09,511 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:09,549 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:09,589 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:09,632 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:09,684 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:09,738 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:09,782 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:09,831 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:09,895 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:09,941 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:10,036 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:10,097 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:10,148 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:10,189 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:10,266 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:10,355 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:10,393 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:10,432 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:10,472 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:10,512 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:10,552 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:10,602 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:10,642 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:11,071 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:11,124 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:11,167 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:11,207 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:11,249 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:11,290 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:11,329 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:11,369 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:11,408 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:11,446 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:11,486 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:11,523 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:11,566 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:11,603 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:11,644 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:11,683 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:11,721 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:11,761 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:11,831 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:11,872 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:11,910 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:11,970 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:12,007 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:12,047 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:12,085 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:12,161 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:12,199 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:12,264 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:12,307 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:12,346 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:12,384 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:12,491 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:12,528 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:12,568 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:12,606 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:12,794 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:13,126 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:13,450 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:13,775 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:13,968 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:14,034 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:14,072 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:14,119 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:14,158 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:14,197 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:14,235 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:14,271 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:14,308 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:14,347 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:14,404 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:14,440 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:14,477 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:14,531 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:14,570 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:14,609 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:14,661 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:14,699 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:14,740 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:14,787 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:14,829 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:14,877 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:14,931 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:14,984 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:15,034 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:15,087 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:15,367 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:15,404 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:15,442 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:15,481 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:15,518 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:15,556 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:15,593 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:15,645 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:15,682 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:15,722 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:15,759 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:15,796 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:15,836 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:15,875 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:15,914 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:15,951 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:15,990 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:16,027 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:16,068 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:16,124 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:16,162 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:16,201 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:16,240 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:16,285 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:16,322 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:16,359 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:16,396 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:16,458 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:16,496 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:16,537 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:16,574 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:16,612 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:16,651 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:16,688 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:18,333 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 65 proven. 127 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:13:18,354 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:13:18,354 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:13:18,370 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:13:18,370 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:13:18,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:13:18,595 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:13:23,206 WARN L178 SmtUtils]: Spent 2.35 s on a formula simplification that was a NOOP. DAG size: 35 [2018-09-14 17:13:33,379 WARN L178 SmtUtils]: Spent 6.02 s on a formula simplification that was a NOOP. DAG size: 38 [2018-09-14 17:13:33,508 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 9 proven. 60 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2018-09-14 17:13:33,508 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:13:33,628 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:33,697 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:33,735 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:33,773 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:33,901 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:33,939 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:34,099 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:34,138 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:34,176 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:34,215 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:34,285 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:34,365 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:34,405 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:34,445 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:34,506 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:34,712 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:34,767 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:34,809 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:34,847 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:34,885 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:34,925 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:34,963 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:35,002 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:35,041 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:35,078 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:35,117 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:35,171 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:35,208 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:35,286 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:35,343 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:35,386 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:35,445 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:35,485 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:35,540 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:35,585 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:35,622 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:35,661 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:35,698 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:35,737 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:35,797 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:35,834 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:35,874 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:35,958 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:35,996 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:36,034 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:36,073 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:36,112 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:36,399 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:36,437 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:36,759 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:36,877 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:36,914 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:36,952 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:36,989 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:37,028 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:37,066 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:37,105 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:37,142 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:37,179 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:37,218 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:37,257 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:37,294 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:37,331 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:37,373 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:37,411 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:37,449 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:37,488 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:37,528 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:37,566 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:37,605 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:37,643 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:37,719 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:37,758 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:37,795 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:37,834 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:37,955 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:37,995 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:38,036 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:38,075 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:38,115 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:38,155 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:38,194 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:38,238 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:38,281 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:38,318 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:38,355 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:38,397 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:38,435 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:38,473 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:38,510 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:38,548 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:38,585 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:38,622 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:38,660 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:38,699 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:38,737 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:38,774 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:38,810 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:38,849 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:38,887 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:38,991 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:39,318 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:39,374 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:39,412 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:39,449 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:39,486 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:39,522 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:39,558 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:39,596 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:39,633 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:39,671 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:39,710 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:39,748 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:39,788 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:39,866 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:39,904 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:39,943 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:39,981 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:40,018 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:40,056 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:40,095 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:40,134 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:40,173 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:40,215 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:40,252 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:40,290 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:40,328 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:40,369 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:40,427 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:40,483 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:40,528 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:40,587 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:40,628 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:40,680 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:40,728 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:40,766 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:40,804 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:40,841 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:40,878 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:40,917 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:40,955 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:40,993 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:41,030 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:41,067 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:41,104 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:41,141 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:41,470 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:41,552 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:41,589 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:41,627 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:41,663 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:41,702 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:41,740 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:41,777 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:41,814 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:41,851 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:41,889 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:41,927 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:42,104 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:42,144 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:42,182 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:42,220 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:42,256 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:42,293 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:42,330 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:42,367 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:42,406 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:13:43,826 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 65 proven. 127 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:13:43,828 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:13:43,828 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9, 9, 9] total 24 [2018-09-14 17:13:43,828 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:13:43,830 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-09-14 17:13:43,830 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-09-14 17:13:43,831 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=401, Unknown=3, NotChecked=0, Total=552 [2018-09-14 17:13:43,831 INFO L87 Difference]: Start difference. First operand 21450 states and 30672 transitions. Second operand 16 states. [2018-09-14 17:13:51,758 WARN L178 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 35 [2018-09-14 17:14:12,096 WARN L178 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 15 [2018-09-14 17:14:17,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:14:17,996 INFO L93 Difference]: Finished difference Result 69550 states and 116465 transitions. [2018-09-14 17:14:17,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-09-14 17:14:17,997 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 346 [2018-09-14 17:14:17,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:14:18,424 INFO L225 Difference]: With dead ends: 69550 [2018-09-14 17:14:18,424 INFO L226 Difference]: Without dead ends: 48106 [2018-09-14 17:14:18,607 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1427 GetRequests, 1034 SyntacticMatches, 339 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5578 ImplicationChecksByTransitivity, 54.2s TimeCoverageRelationStatistics Valid=766, Invalid=2304, Unknown=10, NotChecked=0, Total=3080 [2018-09-14 17:14:18,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48106 states. [2018-09-14 17:14:20,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48106 to 45966. [2018-09-14 17:14:20,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45966 states. [2018-09-14 17:14:20,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45966 states to 45966 states and 65065 transitions. [2018-09-14 17:14:20,593 INFO L78 Accepts]: Start accepts. Automaton has 45966 states and 65065 transitions. Word has length 346 [2018-09-14 17:14:20,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:14:20,593 INFO L480 AbstractCegarLoop]: Abstraction has 45966 states and 65065 transitions. [2018-09-14 17:14:20,594 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-09-14 17:14:20,594 INFO L276 IsEmpty]: Start isEmpty. Operand 45966 states and 65065 transitions. [2018-09-14 17:14:20,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2018-09-14 17:14:20,782 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:14:20,783 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:14:20,783 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:14:20,784 INFO L82 PathProgramCache]: Analyzing trace with hash 728022860, now seen corresponding path program 1 times [2018-09-14 17:14:20,784 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:14:20,784 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:14:20,785 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:14:20,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:14:20,785 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:14:20,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:14:21,266 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-09-14 17:14:21,760 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 185 proven. 88 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2018-09-14 17:14:21,760 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:14:21,760 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:14:21,768 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:14:21,768 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:14:21,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:14:21,890 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:14:22,255 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 354 proven. 2 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-09-14 17:14:22,255 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:14:23,347 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 185 proven. 88 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2018-09-14 17:14:23,368 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:14:23,368 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:14:23,384 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:14:23,385 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:14:23,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:14:23,688 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:14:24,172 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 350 proven. 6 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-09-14 17:14:24,172 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:14:25,422 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 101 proven. 282 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:14:25,424 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:14:25,425 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 8, 10, 11] total 36 [2018-09-14 17:14:25,425 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:14:25,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-14 17:14:25,426 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-14 17:14:25,427 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=1078, Unknown=0, NotChecked=0, Total=1260 [2018-09-14 17:14:25,427 INFO L87 Difference]: Start difference. First operand 45966 states and 65065 transitions. Second operand 15 states. [2018-09-14 17:14:26,911 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2018-09-14 17:14:27,363 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2018-09-14 17:14:31,557 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 39 [2018-09-14 17:14:31,828 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 33 [2018-09-14 17:14:36,172 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 41 [2018-09-14 17:14:37,058 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 33 [2018-09-14 17:14:40,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:14:40,288 INFO L93 Difference]: Finished difference Result 107601 states and 189826 transitions. [2018-09-14 17:14:40,288 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-09-14 17:14:40,288 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 420 [2018-09-14 17:14:40,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:14:40,834 INFO L225 Difference]: With dead ends: 107601 [2018-09-14 17:14:40,834 INFO L226 Difference]: Without dead ends: 62021 [2018-09-14 17:14:41,171 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1772 GetRequests, 1689 SyntacticMatches, 3 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1713 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=1308, Invalid=5334, Unknown=0, NotChecked=0, Total=6642 [2018-09-14 17:14:41,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62021 states. [2018-09-14 17:14:43,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62021 to 58947. [2018-09-14 17:14:43,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58947 states. [2018-09-14 17:14:43,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58947 states to 58947 states and 82293 transitions. [2018-09-14 17:14:43,830 INFO L78 Accepts]: Start accepts. Automaton has 58947 states and 82293 transitions. Word has length 420 [2018-09-14 17:14:43,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:14:43,831 INFO L480 AbstractCegarLoop]: Abstraction has 58947 states and 82293 transitions. [2018-09-14 17:14:43,831 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-14 17:14:43,831 INFO L276 IsEmpty]: Start isEmpty. Operand 58947 states and 82293 transitions. [2018-09-14 17:14:43,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2018-09-14 17:14:43,965 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:14:43,965 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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] [2018-09-14 17:14:43,966 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:14:43,966 INFO L82 PathProgramCache]: Analyzing trace with hash 422013087, now seen corresponding path program 1 times [2018-09-14 17:14:43,966 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:14:43,967 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:14:43,967 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:14:43,967 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:14:43,968 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:14:44,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:14:44,690 INFO L134 CoverageAnalysis]: Checked inductivity of 637 backedges. 310 proven. 94 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2018-09-14 17:14:44,690 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:14:44,691 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:14:44,706 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:14:44,706 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:14:44,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:14:44,849 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:14:45,136 INFO L134 CoverageAnalysis]: Checked inductivity of 637 backedges. 532 proven. 2 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2018-09-14 17:14:45,136 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:14:45,338 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-09-14 17:14:45,443 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-09-14 17:14:45,938 INFO L134 CoverageAnalysis]: Checked inductivity of 637 backedges. 310 proven. 94 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2018-09-14 17:14:45,960 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:14:45,960 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:14:45,977 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:14:45,977 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:14:46,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:14:46,285 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:14:46,431 INFO L134 CoverageAnalysis]: Checked inductivity of 637 backedges. 430 proven. 175 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-09-14 17:14:46,431 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:14:46,594 INFO L134 CoverageAnalysis]: Checked inductivity of 637 backedges. 310 proven. 94 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2018-09-14 17:14:46,596 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:14:46,598 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 6, 5] total 9 [2018-09-14 17:14:46,598 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:14:46,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-14 17:14:46,600 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-14 17:14:46,600 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2018-09-14 17:14:46,601 INFO L87 Difference]: Start difference. First operand 58947 states and 82293 transitions. Second operand 7 states. [2018-09-14 17:14:49,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:14:49,521 INFO L93 Difference]: Finished difference Result 116052 states and 167319 transitions. [2018-09-14 17:14:49,521 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:14:49,521 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 427 [2018-09-14 17:14:49,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:14:49,818 INFO L225 Difference]: With dead ends: 116052 [2018-09-14 17:14:49,819 INFO L226 Difference]: Without dead ends: 57491 [2018-09-14 17:14:49,995 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1716 GetRequests, 1704 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2018-09-14 17:14:50,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57491 states. [2018-09-14 17:14:51,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57491 to 56843. [2018-09-14 17:14:51,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56843 states. [2018-09-14 17:14:51,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56843 states to 56843 states and 72814 transitions. [2018-09-14 17:14:51,311 INFO L78 Accepts]: Start accepts. Automaton has 56843 states and 72814 transitions. Word has length 427 [2018-09-14 17:14:51,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:14:51,312 INFO L480 AbstractCegarLoop]: Abstraction has 56843 states and 72814 transitions. [2018-09-14 17:14:51,312 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-14 17:14:51,313 INFO L276 IsEmpty]: Start isEmpty. Operand 56843 states and 72814 transitions. [2018-09-14 17:14:51,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2018-09-14 17:14:51,456 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:14:51,456 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-09-14 17:14:51,456 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:14:51,457 INFO L82 PathProgramCache]: Analyzing trace with hash 371316397, now seen corresponding path program 1 times [2018-09-14 17:14:51,457 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:14:51,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:14:51,458 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:14:51,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:14:51,458 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:14:51,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:14:52,228 INFO L134 CoverageAnalysis]: Checked inductivity of 719 backedges. 337 proven. 94 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2018-09-14 17:14:52,228 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:14:52,228 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:14:52,243 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:14:52,243 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:14:52,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:14:52,385 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:14:52,780 INFO L134 CoverageAnalysis]: Checked inductivity of 719 backedges. 580 proven. 2 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2018-09-14 17:14:52,780 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:14:53,445 INFO L134 CoverageAnalysis]: Checked inductivity of 719 backedges. 337 proven. 94 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2018-09-14 17:14:53,465 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:14:53,465 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 12 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:14:53,481 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:14:53,481 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:14:53,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:14:53,794 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:14:53,961 INFO L134 CoverageAnalysis]: Checked inductivity of 719 backedges. 580 proven. 2 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2018-09-14 17:14:53,962 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:14:54,176 INFO L134 CoverageAnalysis]: Checked inductivity of 719 backedges. 337 proven. 94 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2018-09-14 17:14:54,178 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:14:54,180 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-09-14 17:14:54,180 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:14:54,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 17:14:54,183 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 17:14:54,183 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-14 17:14:54,183 INFO L87 Difference]: Start difference. First operand 56843 states and 72814 transitions. Second operand 9 states. [2018-09-14 17:14:59,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:14:59,265 INFO L93 Difference]: Finished difference Result 119531 states and 170538 transitions. [2018-09-14 17:14:59,265 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-14 17:14:59,266 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 476 [2018-09-14 17:14:59,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:14:59,701 INFO L225 Difference]: With dead ends: 119531 [2018-09-14 17:14:59,702 INFO L226 Difference]: Without dead ends: 62883 [2018-09-14 17:14:59,901 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1920 GetRequests, 1898 SyntacticMatches, 6 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=102, Invalid=204, Unknown=0, NotChecked=0, Total=306 [2018-09-14 17:14:59,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62883 states. [2018-09-14 17:15:01,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62883 to 62420. [2018-09-14 17:15:01,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62420 states. [2018-09-14 17:15:02,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62420 states to 62420 states and 89935 transitions. [2018-09-14 17:15:02,252 INFO L78 Accepts]: Start accepts. Automaton has 62420 states and 89935 transitions. Word has length 476 [2018-09-14 17:15:02,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:15:02,253 INFO L480 AbstractCegarLoop]: Abstraction has 62420 states and 89935 transitions. [2018-09-14 17:15:02,253 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 17:15:02,253 INFO L276 IsEmpty]: Start isEmpty. Operand 62420 states and 89935 transitions. [2018-09-14 17:15:02,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 486 [2018-09-14 17:15:02,425 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:15:02,425 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-09-14 17:15:02,425 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:15:02,426 INFO L82 PathProgramCache]: Analyzing trace with hash -108764721, now seen corresponding path program 1 times [2018-09-14 17:15:02,426 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:15:02,426 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:15:02,427 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:15:02,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:15:02,427 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:15:02,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:15:02,817 INFO L134 CoverageAnalysis]: Checked inductivity of 728 backedges. 337 proven. 94 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2018-09-14 17:15:02,817 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:15:02,817 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:15:02,825 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:15:02,825 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:15:02,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:15:02,971 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:15:03,229 INFO L134 CoverageAnalysis]: Checked inductivity of 728 backedges. 580 proven. 2 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2018-09-14 17:15:03,229 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:15:03,431 INFO L134 CoverageAnalysis]: Checked inductivity of 728 backedges. 337 proven. 94 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2018-09-14 17:15:03,452 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:15:03,452 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 14 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:15:03,470 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:15:03,470 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:15:03,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:15:03,806 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:15:04,649 INFO L134 CoverageAnalysis]: Checked inductivity of 728 backedges. 580 proven. 2 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2018-09-14 17:15:04,650 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:15:04,904 INFO L134 CoverageAnalysis]: Checked inductivity of 728 backedges. 337 proven. 94 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2018-09-14 17:15:04,906 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:15:04,907 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-14 17:15:04,907 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:15:04,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 17:15:04,908 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 17:15:04,908 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-14 17:15:04,909 INFO L87 Difference]: Start difference. First operand 62420 states and 89935 transitions. Second operand 9 states. [2018-09-14 17:15:06,316 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 7 [2018-09-14 17:15:09,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:15:09,336 INFO L93 Difference]: Finished difference Result 117046 states and 165227 transitions. [2018-09-14 17:15:09,337 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-14 17:15:09,337 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 485 [2018-09-14 17:15:09,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:15:09,509 INFO L225 Difference]: With dead ends: 117046 [2018-09-14 17:15:09,509 INFO L226 Difference]: Without dead ends: 52419 [2018-09-14 17:15:09,781 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1958 GetRequests, 1935 SyntacticMatches, 7 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2018-09-14 17:15:09,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52419 states. [2018-09-14 17:15:10,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52419 to 50787. [2018-09-14 17:15:10,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50787 states. [2018-09-14 17:15:10,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50787 states to 50787 states and 60394 transitions. [2018-09-14 17:15:10,655 INFO L78 Accepts]: Start accepts. Automaton has 50787 states and 60394 transitions. Word has length 485 [2018-09-14 17:15:10,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:15:10,656 INFO L480 AbstractCegarLoop]: Abstraction has 50787 states and 60394 transitions. [2018-09-14 17:15:10,656 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 17:15:10,656 INFO L276 IsEmpty]: Start isEmpty. Operand 50787 states and 60394 transitions. [2018-09-14 17:15:10,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2018-09-14 17:15:10,717 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:15:10,717 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:15:10,718 INFO L423 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:15:10,718 INFO L82 PathProgramCache]: Analyzing trace with hash 1013416520, now seen corresponding path program 1 times [2018-09-14 17:15:10,718 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:15:10,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:15:10,719 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:15:10,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:15:10,719 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:15:10,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:15:11,786 INFO L134 CoverageAnalysis]: Checked inductivity of 641 backedges. 136 proven. 280 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2018-09-14 17:15:11,786 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:15:11,786 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:15:11,794 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:15:11,794 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:15:11,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:15:11,942 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:15:15,323 WARN L178 SmtUtils]: Spent 2.77 s on a formula simplification. DAG size of input: 42 DAG size of output: 32 [2018-09-14 17:15:15,581 INFO L134 CoverageAnalysis]: Checked inductivity of 641 backedges. 381 proven. 29 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2018-09-14 17:15:15,582 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:15:15,791 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:15,857 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:15,889 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:15,922 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:15,953 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:15,985 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:16,023 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:16,054 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:16,087 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:16,118 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:16,151 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:16,185 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:16,216 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:16,248 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:16,281 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:16,314 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:16,346 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:16,378 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:16,410 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:16,442 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:16,475 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:16,507 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:16,539 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:16,572 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:16,604 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:16,636 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:16,677 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:16,712 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:16,752 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:16,783 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:16,815 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:16,846 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:16,878 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:16,910 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:16,943 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:16,975 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:17,007 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:17,038 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:17,070 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:17,101 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:17,173 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:17,206 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:17,238 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:17,273 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:17,305 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:17,338 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:17,370 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:17,401 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:17,435 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:17,470 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:17,502 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:17,534 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:17,565 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:17,597 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:17,632 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:17,672 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:17,711 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:17,760 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:17,796 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:17,843 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:18,005 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:18,038 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:18,069 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:18,101 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:18,133 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:18,165 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:18,197 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:18,229 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:18,261 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:18,293 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:18,326 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:18,359 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:18,391 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:18,422 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:18,454 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:18,486 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:18,517 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:18,551 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:18,584 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:18,616 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:18,648 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:18,679 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:18,711 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:18,743 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:18,777 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:18,809 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:18,840 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:18,872 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:18,903 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:18,934 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:18,967 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:19,000 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:19,031 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:19,064 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:19,095 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:19,127 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:19,159 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:19,191 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:19,223 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:19,256 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:19,288 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:19,321 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:19,353 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:19,387 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:19,418 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:19,451 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:19,483 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:19,518 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:19,549 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:19,581 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:19,612 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:19,644 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:19,675 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:19,707 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:19,738 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:19,770 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:19,802 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:19,833 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:19,866 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:19,897 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:19,930 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:19,963 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:19,995 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:20,026 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:20,057 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:20,089 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:20,121 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:20,152 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:20,184 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:20,216 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:20,249 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:20,281 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:20,313 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:20,346 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:20,377 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:20,409 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:20,463 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:20,494 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:20,527 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:20,558 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:20,590 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:20,623 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:20,654 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:20,686 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:20,717 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:20,748 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:20,783 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:20,815 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:20,847 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:20,882 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:20,932 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:20,963 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:20,995 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:21,027 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:21,058 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:21,090 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:21,122 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:21,154 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:21,186 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:21,217 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:21,250 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:21,283 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:21,315 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:21,347 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:21,378 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:21,410 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:21,441 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:15:22,822 INFO L134 CoverageAnalysis]: Checked inductivity of 641 backedges. 408 proven. 2 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2018-09-14 17:15:22,842 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:15:22,842 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 16 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:15:22,859 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:15:22,860 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:15:23,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:15:23,191 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:15:23,909 WARN L178 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 16 [2018-09-14 17:15:24,115 INFO L134 CoverageAnalysis]: Checked inductivity of 641 backedges. 415 proven. 73 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2018-09-14 17:15:24,116 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:15:24,882 INFO L134 CoverageAnalysis]: Checked inductivity of 641 backedges. 206 proven. 144 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2018-09-14 17:15:24,884 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:15:24,885 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6, 8, 5] total 24 [2018-09-14 17:15:24,885 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:15:24,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-14 17:15:24,887 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-14 17:15:24,887 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=469, Unknown=0, NotChecked=0, Total=552 [2018-09-14 17:15:24,887 INFO L87 Difference]: Start difference. First operand 50787 states and 60394 transitions. Second operand 12 states. [2018-09-14 17:15:29,489 WARN L178 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 38 [2018-09-14 17:15:37,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:15:37,886 INFO L93 Difference]: Finished difference Result 127205 states and 152350 transitions. [2018-09-14 17:15:37,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-09-14 17:15:37,891 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 494 [2018-09-14 17:15:37,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:15:38,139 INFO L225 Difference]: With dead ends: 127205 [2018-09-14 17:15:38,139 INFO L226 Difference]: Without dead ends: 80958 [2018-09-14 17:15:38,256 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2028 GetRequests, 1812 SyntacticMatches, 172 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1939 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=336, Invalid=1734, Unknown=0, NotChecked=0, Total=2070 [2018-09-14 17:15:38,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80958 states. [2018-09-14 17:15:39,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80958 to 79633. [2018-09-14 17:15:39,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79633 states. [2018-09-14 17:15:39,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79633 states to 79633 states and 93960 transitions. [2018-09-14 17:15:39,543 INFO L78 Accepts]: Start accepts. Automaton has 79633 states and 93960 transitions. Word has length 494 [2018-09-14 17:15:39,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:15:39,544 INFO L480 AbstractCegarLoop]: Abstraction has 79633 states and 93960 transitions. [2018-09-14 17:15:39,544 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-09-14 17:15:39,544 INFO L276 IsEmpty]: Start isEmpty. Operand 79633 states and 93960 transitions. [2018-09-14 17:15:39,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 543 [2018-09-14 17:15:39,631 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:15:39,631 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 17:15:39,631 INFO L423 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:15:39,632 INFO L82 PathProgramCache]: Analyzing trace with hash 519090031, now seen corresponding path program 1 times [2018-09-14 17:15:39,632 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:15:39,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:15:39,633 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:15:39,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:15:39,633 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:15:39,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:15:41,189 INFO L134 CoverageAnalysis]: Checked inductivity of 739 backedges. 365 proven. 94 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2018-09-14 17:15:41,190 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:15:41,190 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:15:41,197 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:15:41,198 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:15:41,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:15:41,361 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:15:42,200 INFO L134 CoverageAnalysis]: Checked inductivity of 739 backedges. 608 proven. 2 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2018-09-14 17:15:42,200 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:15:43,510 INFO L134 CoverageAnalysis]: Checked inductivity of 739 backedges. 365 proven. 94 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2018-09-14 17:15:43,530 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:15:43,530 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 18 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:15:43,545 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:15:43,546 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:15:43,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:15:43,909 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:15:44,693 INFO L134 CoverageAnalysis]: Checked inductivity of 739 backedges. 608 proven. 2 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2018-09-14 17:15:44,693 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:15:46,323 INFO L134 CoverageAnalysis]: Checked inductivity of 739 backedges. 361 proven. 104 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2018-09-14 17:15:46,325 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:15:46,325 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 8, 8, 12] total 33 [2018-09-14 17:15:46,325 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:15:46,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-14 17:15:46,326 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-14 17:15:46,327 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=884, Unknown=0, NotChecked=0, Total=1056 [2018-09-14 17:15:46,327 INFO L87 Difference]: Start difference. First operand 79633 states and 93960 transitions. Second operand 15 states. [2018-09-14 17:15:47,361 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2018-09-14 17:15:48,131 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2018-09-14 17:15:49,386 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2018-09-14 17:15:57,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:15:57,163 INFO L93 Difference]: Finished difference Result 159793 states and 190268 transitions. [2018-09-14 17:15:57,163 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-09-14 17:15:57,163 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 542 [2018-09-14 17:15:57,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:15:57,377 INFO L225 Difference]: With dead ends: 159793 [2018-09-14 17:15:57,377 INFO L226 Difference]: Without dead ends: 76845 [2018-09-14 17:15:57,498 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2244 GetRequests, 2172 SyntacticMatches, 6 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1163 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=985, Invalid=3571, Unknown=0, NotChecked=0, Total=4556 [2018-09-14 17:15:57,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76845 states. [2018-09-14 17:15:58,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76845 to 75370. [2018-09-14 17:15:58,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75370 states. [2018-09-14 17:15:58,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75370 states to 75370 states and 87228 transitions. [2018-09-14 17:15:58,631 INFO L78 Accepts]: Start accepts. Automaton has 75370 states and 87228 transitions. Word has length 542 [2018-09-14 17:15:58,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:15:58,632 INFO L480 AbstractCegarLoop]: Abstraction has 75370 states and 87228 transitions. [2018-09-14 17:15:58,632 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-14 17:15:58,632 INFO L276 IsEmpty]: Start isEmpty. Operand 75370 states and 87228 transitions. [2018-09-14 17:15:58,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 543 [2018-09-14 17:15:58,699 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:15:58,699 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:15:58,699 INFO L423 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:15:58,699 INFO L82 PathProgramCache]: Analyzing trace with hash 893699396, now seen corresponding path program 1 times [2018-09-14 17:15:58,699 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:15:58,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:15:58,700 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:15:58,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:15:58,700 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:15:58,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:15:59,132 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-09-14 17:16:00,684 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 99 proven. 325 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2018-09-14 17:16:00,685 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:16:00,685 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:16:00,693 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:16:00,693 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Received shutdown request... [2018-09-14 17:16:00,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:16:00,851 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:16:00,855 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-09-14 17:16:01,056 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:16:01,057 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-14 17:16:01,062 WARN L206 ceAbstractionStarter]: Timeout [2018-09-14 17:16:01,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 05:16:01 BoogieIcfgContainer [2018-09-14 17:16:01,063 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-14 17:16:01,064 INFO L168 Benchmark]: Toolchain (without parser) took 228333.55 ms. Allocated memory was 1.5 GB in the beginning and 3.8 GB in the end (delta: 2.3 GB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -843.1 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-09-14 17:16:01,064 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-14 17:16:01,065 INFO L168 Benchmark]: CACSL2BoogieTranslator took 920.99 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. [2018-09-14 17:16:01,065 INFO L168 Benchmark]: Boogie Procedure Inliner took 142.69 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-09-14 17:16:01,066 INFO L168 Benchmark]: Boogie Preprocessor took 404.23 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 800.1 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -925.8 MB). Peak memory consumption was 49.5 MB. Max. memory is 7.1 GB. [2018-09-14 17:16:01,067 INFO L168 Benchmark]: RCFGBuilder took 4903.35 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: 173.1 MB). Peak memory consumption was 173.1 MB. Max. memory is 7.1 GB. [2018-09-14 17:16:01,067 INFO L168 Benchmark]: TraceAbstraction took 221955.36 ms. Allocated memory was 2.3 GB in the beginning and 3.8 GB in the end (delta: 1.5 GB). Free memory was 2.1 GB in the beginning and 2.3 GB in the end (delta: -185.5 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-09-14 17:16:01,072 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 920.99 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 142.69 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 404.23 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 800.1 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -925.8 MB). Peak memory consumption was 49.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 4903.35 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: 173.1 MB). Peak memory consumption was 173.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 221955.36 ms. Allocated memory was 2.3 GB in the beginning and 3.8 GB in the end (delta: 1.5 GB). Free memory was 2.1 GB in the beginning and 2.3 GB in the end (delta: -185.5 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 99). Cancelled while BasicCegarLoop was analyzing trace of length 543 with TraceHistMax 4, while TraceCheckSpWp was constructing forward predicates, while PredicateComparison was comparing new predicate (quantifier-free) to 15 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 221.8s OverallTime, 16 OverallIterations, 5 TraceHistogramMax, 121.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2905 SDtfs, 24113 SDslu, 4898 SDs, 0 SdLazy, 43802 SolverSat, 8947 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 70.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14411 GetRequests, 13533 SyntacticMatches, 547 SemanticMatches, 331 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10589 ImplicationChecksByTransitivity, 82.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=79633occurred in iteration=14, 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: 13.7s AutomataMinimizationTime, 15 MinimizatonAttempts, 11616 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.5s SsaConstructionTime, 3.5s SatisfiabilityAnalysisTime, 75.8s InterpolantComputationTime, 11599 NumberOfCodeBlocks, 11599 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 18572 ConstructedInterpolants, 846 QuantifiedInterpolants, 62576216 SizeOfPredicates, 56 NumberOfNonLiveVariables, 11485 ConjunctsInSsa, 233 ConjunctsInUnsatCore, 49 InterpolantComputations, 9 PerfectInterpolantSequences, 18919/21951 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem11_label25_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-14_17-16-01-085.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem11_label25_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-14_17-16-01-085.csv Completed graceful shutdown