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 0.1.23-69f5bdd-m [2018-09-18 11:22:01,944 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-18 11:22:01,946 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-18 11:22:01,958 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-18 11:22:01,959 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-18 11:22:01,960 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-18 11:22:01,961 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-18 11:22:01,964 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-18 11:22:01,966 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-18 11:22:01,967 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-18 11:22:01,968 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-18 11:22:01,968 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-18 11:22:01,971 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-18 11:22:01,972 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-18 11:22:01,973 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-18 11:22:01,977 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-18 11:22:01,978 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-18 11:22:01,985 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-18 11:22:01,991 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-18 11:22:01,993 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-18 11:22:01,997 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-18 11:22:01,998 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-18 11:22:02,004 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-18 11:22:02,004 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-18 11:22:02,006 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-18 11:22:02,007 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-18 11:22:02,008 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-18 11:22:02,009 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-18 11:22:02,012 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-18 11:22:02,013 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-18 11:22:02,014 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-18 11:22:02,014 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-09-18 11:22:02,020 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-18 11:22:02,047 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-18 11:22:02,051 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-18 11:22:02,052 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-18 11:22:02,052 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-18 11:22:02,052 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-18 11:22:02,052 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-18 11:22:02,052 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-18 11:22:02,053 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-18 11:22:02,053 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-18 11:22:02,053 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-18 11:22:02,053 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-18 11:22:02,053 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-18 11:22:02,054 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-18 11:22:02,054 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-18 11:22:02,058 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-18 11:22:02,058 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-18 11:22:02,058 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-18 11:22:02,058 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-18 11:22:02,058 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-18 11:22:02,059 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-18 11:22:02,059 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-18 11:22:02,059 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-18 11:22:02,059 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-18 11:22:02,061 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-18 11:22:02,061 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 11:22:02,061 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-18 11:22:02,061 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-18 11:22:02,062 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-18 11:22:02,062 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-18 11:22:02,062 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-18 11:22:02,062 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-18 11:22:02,062 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-18 11:22:02,063 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-18 11:22:02,063 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-18 11:22:02,125 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-18 11:22:02,140 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-18 11:22:02,144 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-18 11:22:02,146 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-18 11:22:02,147 INFO L276 PluginConnector]: CDTParser initialized [2018-09-18 11:22:02,148 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label25_true-unreach-call.c [2018-09-18 11:22:02,481 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d387598f6/81560a2b2e7c442497595d71a5462f72/FLAG037d0ee5d [2018-09-18 11:22:02,883 INFO L277 CDTParser]: Found 1 translation units. [2018-09-18 11:22:02,884 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label25_true-unreach-call.c [2018-09-18 11:22:02,906 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d387598f6/81560a2b2e7c442497595d71a5462f72/FLAG037d0ee5d [2018-09-18 11:22:02,926 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d387598f6/81560a2b2e7c442497595d71a5462f72 [2018-09-18 11:22:02,939 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-18 11:22:02,945 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-18 11:22:02,946 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-18 11:22:02,946 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-18 11:22:02,953 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-18 11:22:02,954 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 11:22:02" (1/1) ... [2018-09-18 11:22:02,957 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@746fe49d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:22:02, skipping insertion in model container [2018-09-18 11:22:02,958 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 11:22:02" (1/1) ... [2018-09-18 11:22:02,970 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-18 11:22:03,600 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 11:22:03,620 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-18 11:22:03,764 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 11:22:03,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:22:03 WrapperNode [2018-09-18 11:22:03,836 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-18 11:22:03,837 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-18 11:22:03,837 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-18 11:22:03,837 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-18 11:22:03,847 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:22:03" (1/1) ... [2018-09-18 11:22:03,901 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:22:03" (1/1) ... [2018-09-18 11:22:04,034 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-18 11:22:04,035 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-18 11:22:04,035 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-18 11:22:04,035 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-18 11:22:04,292 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:22:03" (1/1) ... [2018-09-18 11:22:04,293 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:22:03" (1/1) ... [2018-09-18 11:22:04,301 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:22:03" (1/1) ... [2018-09-18 11:22:04,303 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:22:03" (1/1) ... [2018-09-18 11:22:04,372 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:22:03" (1/1) ... [2018-09-18 11:22:04,398 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:22:03" (1/1) ... [2018-09-18 11:22:04,418 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:22:03" (1/1) ... [2018-09-18 11:22:04,430 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-18 11:22:04,431 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-18 11:22:04,431 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-18 11:22:04,431 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-18 11:22:04,432 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:22:03" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 11:22:04,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-18 11:22:04,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-18 11:22:04,506 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-18 11:22:04,506 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-18 11:22:04,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-18 11:22:04,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-18 11:22:04,507 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-18 11:22:04,507 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-18 11:22:08,916 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-18 11:22:08,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 11:22:08 BoogieIcfgContainer [2018-09-18 11:22:08,917 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-18 11:22:08,918 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-18 11:22:08,918 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-18 11:22:08,921 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-18 11:22:08,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 11:22:02" (1/3) ... [2018-09-18 11:22:08,922 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a0cd4b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 11:22:08, skipping insertion in model container [2018-09-18 11:22:08,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:22:03" (2/3) ... [2018-09-18 11:22:08,923 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a0cd4b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 11:22:08, skipping insertion in model container [2018-09-18 11:22:08,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 11:22:08" (3/3) ... [2018-09-18 11:22:08,925 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label25_true-unreach-call.c [2018-09-18 11:22:08,935 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-18 11:22:08,945 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-18 11:22:09,007 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-18 11:22:09,008 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-18 11:22:09,008 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-18 11:22:09,008 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-18 11:22:09,009 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-18 11:22:09,009 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-18 11:22:09,009 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-18 11:22:09,009 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-18 11:22:09,009 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-18 11:22:09,052 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-09-18 11:22:09,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-09-18 11:22:09,063 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:22:09,064 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:22:09,065 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:22:09,071 INFO L82 PathProgramCache]: Analyzing trace with hash 1384704100, now seen corresponding path program 1 times [2018-09-18 11:22:09,074 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:22:09,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:22:09,127 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:22:09,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:22:09,127 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:22:09,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:22:09,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:22:09,580 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:22:09,580 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-18 11:22:09,581 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:22:09,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-18 11:22:09,605 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-18 11:22:09,606 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 11:22:09,611 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-09-18 11:22:13,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:22:13,504 INFO L93 Difference]: Finished difference Result 996 states and 1776 transitions. [2018-09-18 11:22:13,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-18 11:22:13,506 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2018-09-18 11:22:13,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:22:13,530 INFO L225 Difference]: With dead ends: 996 [2018-09-18 11:22:13,530 INFO L226 Difference]: Without dead ends: 697 [2018-09-18 11:22:13,542 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 11:22:13,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2018-09-18 11:22:13,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 481. [2018-09-18 11:22:13,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 481 states. [2018-09-18 11:22:13,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 742 transitions. [2018-09-18 11:22:13,639 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 742 transitions. Word has length 38 [2018-09-18 11:22:13,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:22:13,640 INFO L480 AbstractCegarLoop]: Abstraction has 481 states and 742 transitions. [2018-09-18 11:22:13,640 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-18 11:22:13,640 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 742 transitions. [2018-09-18 11:22:13,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-09-18 11:22:13,646 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:22:13,647 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] [2018-09-18 11:22:13,647 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:22:13,648 INFO L82 PathProgramCache]: Analyzing trace with hash -331878893, now seen corresponding path program 1 times [2018-09-18 11:22:13,648 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:22:13,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:22:13,649 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:22:13,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:22:13,650 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:22:13,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:22:13,964 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:22:13,964 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:22:13,964 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 11:22:13,965 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:22:13,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 11:22:13,967 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 11:22:13,968 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 11:22:13,968 INFO L87 Difference]: Start difference. First operand 481 states and 742 transitions. Second operand 6 states. [2018-09-18 11:22:17,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:22:17,865 INFO L93 Difference]: Finished difference Result 1725 states and 2777 transitions. [2018-09-18 11:22:17,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 11:22:17,866 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 111 [2018-09-18 11:22:17,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:22:17,880 INFO L225 Difference]: With dead ends: 1725 [2018-09-18 11:22:17,880 INFO L226 Difference]: Without dead ends: 1250 [2018-09-18 11:22:17,885 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-18 11:22:17,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2018-09-18 11:22:17,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 1231. [2018-09-18 11:22:17,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1231 states. [2018-09-18 11:22:17,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1231 states to 1231 states and 1812 transitions. [2018-09-18 11:22:17,980 INFO L78 Accepts]: Start accepts. Automaton has 1231 states and 1812 transitions. Word has length 111 [2018-09-18 11:22:17,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:22:17,981 INFO L480 AbstractCegarLoop]: Abstraction has 1231 states and 1812 transitions. [2018-09-18 11:22:17,981 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 11:22:17,981 INFO L276 IsEmpty]: Start isEmpty. Operand 1231 states and 1812 transitions. [2018-09-18 11:22:17,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-09-18 11:22:17,990 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:22:17,990 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] [2018-09-18 11:22:17,991 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:22:17,991 INFO L82 PathProgramCache]: Analyzing trace with hash -689587928, now seen corresponding path program 1 times [2018-09-18 11:22:17,991 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:22:17,996 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:22:17,997 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:22:17,997 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:22:17,997 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:22:18,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:22:18,306 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:22:18,307 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:22:18,307 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-18 11:22:18,307 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:22:18,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-18 11:22:18,309 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-18 11:22:18,309 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 11:22:18,310 INFO L87 Difference]: Start difference. First operand 1231 states and 1812 transitions. Second operand 4 states. [2018-09-18 11:22:21,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:22:21,321 INFO L93 Difference]: Finished difference Result 3240 states and 4918 transitions. [2018-09-18 11:22:21,331 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-18 11:22:21,332 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 112 [2018-09-18 11:22:21,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:22:21,347 INFO L225 Difference]: With dead ends: 3240 [2018-09-18 11:22:21,347 INFO L226 Difference]: Without dead ends: 2015 [2018-09-18 11:22:21,355 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 11:22:21,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2015 states. [2018-09-18 11:22:21,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2015 to 2000. [2018-09-18 11:22:21,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2000 states. [2018-09-18 11:22:21,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2000 states to 2000 states and 2897 transitions. [2018-09-18 11:22:21,429 INFO L78 Accepts]: Start accepts. Automaton has 2000 states and 2897 transitions. Word has length 112 [2018-09-18 11:22:21,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:22:21,431 INFO L480 AbstractCegarLoop]: Abstraction has 2000 states and 2897 transitions. [2018-09-18 11:22:21,431 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-18 11:22:21,432 INFO L276 IsEmpty]: Start isEmpty. Operand 2000 states and 2897 transitions. [2018-09-18 11:22:21,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-09-18 11:22:21,438 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:22:21,438 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] [2018-09-18 11:22:21,440 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:22:21,441 INFO L82 PathProgramCache]: Analyzing trace with hash -2107878529, now seen corresponding path program 1 times [2018-09-18 11:22:21,441 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:22:21,442 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:22:21,442 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:22:21,442 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:22:21,443 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:22:21,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:22:21,987 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:22:21,987 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:22:21,987 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 11:22:21,987 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:22:21,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 11:22:21,988 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 11:22:21,990 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-18 11:22:21,990 INFO L87 Difference]: Start difference. First operand 2000 states and 2897 transitions. Second operand 6 states. [2018-09-18 11:22:28,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:22:28,353 INFO L93 Difference]: Finished difference Result 7663 states and 13269 transitions. [2018-09-18 11:22:28,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-18 11:22:28,354 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 137 [2018-09-18 11:22:28,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:22:28,467 INFO L225 Difference]: With dead ends: 7663 [2018-09-18 11:22:28,468 INFO L226 Difference]: Without dead ends: 5669 [2018-09-18 11:22:28,522 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-09-18 11:22:28,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5669 states. [2018-09-18 11:22:28,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5669 to 5142. [2018-09-18 11:22:28,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5142 states. [2018-09-18 11:22:28,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5142 states to 5142 states and 7307 transitions. [2018-09-18 11:22:28,751 INFO L78 Accepts]: Start accepts. Automaton has 5142 states and 7307 transitions. Word has length 137 [2018-09-18 11:22:28,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:22:28,752 INFO L480 AbstractCegarLoop]: Abstraction has 5142 states and 7307 transitions. [2018-09-18 11:22:28,752 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 11:22:28,752 INFO L276 IsEmpty]: Start isEmpty. Operand 5142 states and 7307 transitions. [2018-09-18 11:22:28,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-09-18 11:22:28,762 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:22:28,763 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] [2018-09-18 11:22:28,763 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:22:28,763 INFO L82 PathProgramCache]: Analyzing trace with hash -1631754857, now seen corresponding path program 1 times [2018-09-18 11:22:28,764 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:22:28,764 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:22:28,765 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:22:28,765 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:22:28,765 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:22:28,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:22:29,005 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 132 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:22:29,006 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:22:29,006 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:22:29,025 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:22:29,025 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:22:29,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:22:29,119 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:22:29,340 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-09-18 11:22:29,340 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:22:29,573 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-09-18 11:22:29,612 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-18 11:22:29,612 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2018-09-18 11:22:29,612 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:22:29,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 11:22:29,614 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 11:22:29,614 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-09-18 11:22:29,615 INFO L87 Difference]: Start difference. First operand 5142 states and 7307 transitions. Second operand 3 states. [2018-09-18 11:22:32,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:22:32,515 INFO L93 Difference]: Finished difference Result 12524 states and 19451 transitions. [2018-09-18 11:22:32,520 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 11:22:32,520 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 185 [2018-09-18 11:22:32,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:22:32,576 INFO L225 Difference]: With dead ends: 12524 [2018-09-18 11:22:32,577 INFO L226 Difference]: Without dead ends: 7388 [2018-09-18 11:22:32,643 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 369 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-09-18 11:22:32,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7388 states. [2018-09-18 11:22:32,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7388 to 7388. [2018-09-18 11:22:32,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7388 states. [2018-09-18 11:22:32,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7388 states to 7388 states and 10698 transitions. [2018-09-18 11:22:32,907 INFO L78 Accepts]: Start accepts. Automaton has 7388 states and 10698 transitions. Word has length 185 [2018-09-18 11:22:32,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:22:32,908 INFO L480 AbstractCegarLoop]: Abstraction has 7388 states and 10698 transitions. [2018-09-18 11:22:32,908 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 11:22:32,908 INFO L276 IsEmpty]: Start isEmpty. Operand 7388 states and 10698 transitions. [2018-09-18 11:22:32,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2018-09-18 11:22:32,926 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:22:32,926 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] [2018-09-18 11:22:32,926 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:22:32,927 INFO L82 PathProgramCache]: Analyzing trace with hash 2031421955, now seen corresponding path program 1 times [2018-09-18 11:22:32,927 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:22:32,928 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:22:32,928 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:22:32,928 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:22:32,928 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:22:32,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:22:33,606 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 62 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 11:22:33,606 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:22:33,606 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) [2018-09-18 11:22:33,622 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:22:33,623 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:22:33,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:22:33,711 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:22:33,857 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-09-18 11:22:33,857 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:22:34,069 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 37 [2018-09-18 11:22:34,436 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 62 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 11:22:34,458 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 11:22:34,458 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 5] total 11 [2018-09-18 11:22:34,459 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:22:34,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:22:34,460 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:22:34,460 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-18 11:22:34,460 INFO L87 Difference]: Start difference. First operand 7388 states and 10698 transitions. Second operand 5 states. [2018-09-18 11:22:38,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:22:38,694 INFO L93 Difference]: Finished difference Result 17325 states and 24870 transitions. [2018-09-18 11:22:38,695 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 11:22:38,695 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 207 [2018-09-18 11:22:38,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:22:38,758 INFO L225 Difference]: With dead ends: 17325 [2018-09-18 11:22:38,758 INFO L226 Difference]: Without dead ends: 9748 [2018-09-18 11:22:38,789 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 423 GetRequests, 411 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-09-18 11:22:38,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9748 states. [2018-09-18 11:22:39,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9748 to 9699. [2018-09-18 11:22:39,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9699 states. [2018-09-18 11:22:39,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9699 states to 9699 states and 13739 transitions. [2018-09-18 11:22:39,096 INFO L78 Accepts]: Start accepts. Automaton has 9699 states and 13739 transitions. Word has length 207 [2018-09-18 11:22:39,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:22:39,097 INFO L480 AbstractCegarLoop]: Abstraction has 9699 states and 13739 transitions. [2018-09-18 11:22:39,097 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 11:22:39,097 INFO L276 IsEmpty]: Start isEmpty. Operand 9699 states and 13739 transitions. [2018-09-18 11:22:39,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-09-18 11:22:39,109 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:22:39,109 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] [2018-09-18 11:22:39,109 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:22:39,110 INFO L82 PathProgramCache]: Analyzing trace with hash -1119037538, now seen corresponding path program 1 times [2018-09-18 11:22:39,110 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:22:39,111 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:22:39,111 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:22:39,111 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:22:39,111 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:22:39,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:22:40,033 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-09-18 11:22:40,034 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:22:40,034 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:22:40,053 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:22:40,053 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:22:40,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:22:40,149 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:22:40,990 WARN L178 SmtUtils]: Spent 493.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 35 [2018-09-18 11:22:41,226 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-09-18 11:22:41,226 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:22:42,010 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-09-18 11:22:42,032 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 11:22:42,032 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 11 [2018-09-18 11:22:42,032 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:22:42,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 11:22:42,033 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 11:22:42,033 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-09-18 11:22:42,035 INFO L87 Difference]: Start difference. First operand 9699 states and 13739 transitions. Second operand 6 states. [2018-09-18 11:22:45,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:22:45,649 INFO L93 Difference]: Finished difference Result 25161 states and 37387 transitions. [2018-09-18 11:22:45,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-18 11:22:45,649 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 250 [2018-09-18 11:22:45,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:22:45,727 INFO L225 Difference]: With dead ends: 25161 [2018-09-18 11:22:45,727 INFO L226 Difference]: Without dead ends: 15468 [2018-09-18 11:22:45,777 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 495 SyntacticMatches, 6 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-09-18 11:22:45,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15468 states. [2018-09-18 11:22:46,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15468 to 15466. [2018-09-18 11:22:46,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15466 states. [2018-09-18 11:22:46,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15466 states to 15466 states and 22434 transitions. [2018-09-18 11:22:46,197 INFO L78 Accepts]: Start accepts. Automaton has 15466 states and 22434 transitions. Word has length 250 [2018-09-18 11:22:46,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:22:46,198 INFO L480 AbstractCegarLoop]: Abstraction has 15466 states and 22434 transitions. [2018-09-18 11:22:46,198 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 11:22:46,198 INFO L276 IsEmpty]: Start isEmpty. Operand 15466 states and 22434 transitions. [2018-09-18 11:22:46,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2018-09-18 11:22:46,257 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:22:46,257 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] [2018-09-18 11:22:46,258 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:22:46,258 INFO L82 PathProgramCache]: Analyzing trace with hash -1090686184, now seen corresponding path program 1 times [2018-09-18 11:22:46,258 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:22:46,259 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:22:46,259 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:22:46,259 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:22:46,259 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:22:46,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:22:46,741 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2018-09-18 11:22:46,741 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:22:46,742 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-18 11:22:46,742 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:22:46,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-18 11:22:46,742 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-18 11:22:46,743 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 11:22:46,743 INFO L87 Difference]: Start difference. First operand 15466 states and 22434 transitions. Second operand 4 states. [2018-09-18 11:22:48,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:22:48,862 INFO L93 Difference]: Finished difference Result 36941 states and 59934 transitions. [2018-09-18 11:22:48,862 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-18 11:22:48,862 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 347 [2018-09-18 11:22:48,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:22:49,141 INFO L225 Difference]: With dead ends: 36941 [2018-09-18 11:22:49,141 INFO L226 Difference]: Without dead ends: 21481 [2018-09-18 11:22:49,227 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 [2018-09-18 11:22:49,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21481 states. [2018-09-18 11:22:49,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21481 to 21450. [2018-09-18 11:22:49,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21450 states. [2018-09-18 11:22:49,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21450 states to 21450 states and 30672 transitions. [2018-09-18 11:22:49,822 INFO L78 Accepts]: Start accepts. Automaton has 21450 states and 30672 transitions. Word has length 347 [2018-09-18 11:22:49,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:22:49,823 INFO L480 AbstractCegarLoop]: Abstraction has 21450 states and 30672 transitions. [2018-09-18 11:22:49,823 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-18 11:22:49,824 INFO L276 IsEmpty]: Start isEmpty. Operand 21450 states and 30672 transitions. [2018-09-18 11:22:49,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2018-09-18 11:22:49,888 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:22:49,888 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] [2018-09-18 11:22:49,888 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:22:49,889 INFO L82 PathProgramCache]: Analyzing trace with hash 38563041, now seen corresponding path program 1 times [2018-09-18 11:22:49,889 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:22:49,892 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:22:49,892 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:22:49,892 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:22:49,892 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:22:49,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:22:51,337 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 69 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2018-09-18 11:22:51,338 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:22:51,338 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:22:51,347 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:22:51,347 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:22:51,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:22:51,454 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:22:52,042 WARN L178 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 32 [2018-09-18 11:22:52,242 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 11 proven. 58 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2018-09-18 11:22:52,242 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:22:52,776 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:52,818 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:52,873 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:52,929 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:52,971 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:53,027 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:53,080 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:53,154 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:53,265 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:53,309 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:53,463 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:53,506 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:53,556 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:53,596 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:53,681 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:53,745 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:53,789 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:53,842 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:53,888 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:53,929 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:53,988 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:54,031 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:54,069 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:54,112 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:54,204 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:54,243 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:54,285 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:54,327 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:54,379 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:54,432 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:54,474 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:54,553 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:54,630 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:54,739 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:54,784 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:54,858 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:54,899 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:54,955 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:54,995 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:55,037 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:55,375 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:55,705 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:56,028 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:56,344 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:56,460 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:56,502 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:56,542 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:56,583 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:56,667 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:56,708 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:56,747 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:56,799 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:56,846 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:56,931 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:56,972 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:57,015 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:57,243 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:57,301 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:57,340 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:57,382 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:57,476 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:57,515 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:57,554 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:57,592 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:57,631 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:57,671 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:57,728 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:57,768 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:57,806 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:57,849 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:57,895 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:57,934 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:57,975 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:58,018 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:58,057 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:58,098 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:58,137 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:58,177 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:58,217 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:58,256 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:58,300 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:58,343 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:58,381 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:58,423 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:58,463 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:58,504 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:58,573 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:58,613 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:58,651 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:58,712 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:58,751 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:58,789 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:58,828 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:58,866 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:58,917 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:58,961 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:58,998 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:59,036 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:59,077 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:59,117 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:59,225 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:59,264 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:59,303 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:59,357 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:59,396 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:59,435 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:59,473 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:59,514 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:22:59,857 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:00,186 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:00,517 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:00,814 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:00,853 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:00,894 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:00,930 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:00,968 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:01,006 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:01,043 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:01,080 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:01,117 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:01,154 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:01,224 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:01,273 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:01,331 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:01,389 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:01,511 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:01,566 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:01,638 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:01,679 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:01,717 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:01,755 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:01,794 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:01,832 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:02,179 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:02,230 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:02,267 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:02,302 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:02,342 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:02,381 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:02,420 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:02,459 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:02,500 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:02,537 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:02,577 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:02,616 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:02,657 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:02,695 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:02,735 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:02,774 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:02,813 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:02,852 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:02,892 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:02,932 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:02,969 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:03,007 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:03,047 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:03,086 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:03,124 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:03,163 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:03,229 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:03,269 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:03,306 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:03,345 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:03,385 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:03,425 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:03,463 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:03,498 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:07,303 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 65 proven. 127 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:23:07,323 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:23:07,323 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:23:07,341 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:23:07,341 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:23:07,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:23:07,569 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:23:13,663 WARN L178 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 35 [2018-09-18 11:23:22,777 WARN L178 SmtUtils]: Spent 6.03 s on a formula simplification that was a NOOP. DAG size: 38 [2018-09-18 11:23:22,900 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 9 proven. 60 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2018-09-18 11:23:22,901 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:23:23,046 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:23,127 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:23,165 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:23,205 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:23,336 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:23,372 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:23,424 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:23,462 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:23,500 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:23,536 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:23,615 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:23,653 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:23,691 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:23,729 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:23,769 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:23,808 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:23,845 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:23,884 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:23,923 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:23,963 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:24,002 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:24,041 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:24,080 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:24,121 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:24,159 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:24,199 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:24,241 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:24,291 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:24,330 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:24,370 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:24,576 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:24,616 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:24,658 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:24,698 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:24,738 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:24,797 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:24,839 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:24,877 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:24,917 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:24,961 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:25,001 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:25,039 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:25,106 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:25,161 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:25,200 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:25,239 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:25,279 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:25,316 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:25,355 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:25,393 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:25,744 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:25,872 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:25,910 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:25,949 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:25,989 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:26,030 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:26,068 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:26,107 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:26,147 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:26,189 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:26,228 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:26,298 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:26,339 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:26,380 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:26,420 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:26,458 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:26,498 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:26,538 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:26,578 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:26,618 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:26,658 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:26,738 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:26,775 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:26,816 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:26,863 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:27,001 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:27,056 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:27,098 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:27,145 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:27,217 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:27,254 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:27,290 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:27,328 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:27,365 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:27,401 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:27,440 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:27,476 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:27,513 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:27,551 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:27,590 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:27,627 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:27,665 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:27,701 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:27,743 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:27,794 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:27,834 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:27,871 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:27,909 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:27,947 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:27,985 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:28,069 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:28,397 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:28,514 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:28,550 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:28,589 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:28,625 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:28,662 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:28,700 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:28,738 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:28,775 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:28,813 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:28,849 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:28,885 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:28,924 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:28,961 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:28,998 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:29,037 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:29,073 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:29,109 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:29,146 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:29,200 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:29,236 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:29,275 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:29,312 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:29,350 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:29,388 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:29,426 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:29,464 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:29,507 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:29,544 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:29,580 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:29,617 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:29,655 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:29,692 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:29,729 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:29,880 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:29,928 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:29,964 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:30,000 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:30,039 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:30,078 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:30,115 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:30,150 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:30,189 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:30,226 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:30,262 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:30,539 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:30,677 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:30,713 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:30,749 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:30,785 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:30,821 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:30,859 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:30,896 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:30,934 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:30,973 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:31,011 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:31,047 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:31,083 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:31,121 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:31,158 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:31,196 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:31,236 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:31,273 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:31,309 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:31,345 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:31,381 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 11:23:34,763 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 65 proven. 127 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:23:34,766 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:23:34,766 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9, 9, 9] total 24 [2018-09-18 11:23:34,766 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:23:34,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-09-18 11:23:34,767 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-09-18 11:23:34,768 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=400, Unknown=4, NotChecked=0, Total=552 [2018-09-18 11:23:34,768 INFO L87 Difference]: Start difference. First operand 21450 states and 30672 transitions. Second operand 16 states. [2018-09-18 11:25:08,721 WARN L178 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 15 [2018-09-18 11:25:49,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:25:49,265 INFO L93 Difference]: Finished difference Result 69500 states and 116549 transitions. [2018-09-18 11:25:49,265 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-09-18 11:25:49,265 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 346 [2018-09-18 11:25:49,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:25:49,624 INFO L225 Difference]: With dead ends: 69500 [2018-09-18 11:25:49,624 INFO L226 Difference]: Without dead ends: 48056 [2018-09-18 11:25:49,735 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1428 GetRequests, 1035 SyntacticMatches, 339 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5578 ImplicationChecksByTransitivity, 55.4s TimeCoverageRelationStatistics Valid=766, Invalid=2303, Unknown=11, NotChecked=0, Total=3080 [2018-09-18 11:25:49,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48056 states. [2018-09-18 11:25:51,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48056 to 45986. [2018-09-18 11:25:51,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45986 states. [2018-09-18 11:25:51,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45986 states to 45986 states and 65265 transitions. [2018-09-18 11:25:51,365 INFO L78 Accepts]: Start accepts. Automaton has 45986 states and 65265 transitions. Word has length 346 [2018-09-18 11:25:51,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:25:51,366 INFO L480 AbstractCegarLoop]: Abstraction has 45986 states and 65265 transitions. [2018-09-18 11:25:51,366 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-09-18 11:25:51,366 INFO L276 IsEmpty]: Start isEmpty. Operand 45986 states and 65265 transitions. [2018-09-18 11:25:51,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2018-09-18 11:25:51,554 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:25:51,554 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] [2018-09-18 11:25:51,555 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:25:51,555 INFO L82 PathProgramCache]: Analyzing trace with hash 728022860, now seen corresponding path program 1 times [2018-09-18 11:25:51,555 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:25:51,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:25:51,557 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:25:51,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:25:51,557 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:25:51,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:25:52,036 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-09-18 11:25:52,232 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-09-18 11:25:52,582 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 185 proven. 88 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2018-09-18 11:25:52,583 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:25:52,583 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:25:52,594 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:25:52,594 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:25:52,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:25:52,718 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:25:53,438 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 354 proven. 2 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-09-18 11:25:53,438 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:25:54,060 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 185 proven. 88 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2018-09-18 11:25:54,081 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:25:54,082 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:25:54,099 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:25:54,099 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:25:54,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:25:54,367 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:25:54,956 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 350 proven. 6 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-09-18 11:25:54,956 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:25:56,375 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 101 proven. 282 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 11:25:56,378 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:25:56,378 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 8, 10, 11] total 36 [2018-09-18 11:25:56,379 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:25:56,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-18 11:25:56,381 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-18 11:25:56,381 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=1078, Unknown=0, NotChecked=0, Total=1260 [2018-09-18 11:25:56,382 INFO L87 Difference]: Start difference. First operand 45986 states and 65265 transitions. Second operand 15 states. [2018-09-18 11:25:58,399 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2018-09-18 11:26:02,905 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 33 [2018-09-18 11:26:07,320 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 41 [2018-09-18 11:26:11,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:26:11,484 INFO L93 Difference]: Finished difference Result 107649 states and 190928 transitions. [2018-09-18 11:26:11,485 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-09-18 11:26:11,485 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 420 [2018-09-18 11:26:11,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:26:11,957 INFO L225 Difference]: With dead ends: 107649 [2018-09-18 11:26:11,957 INFO L226 Difference]: Without dead ends: 62049 Received shutdown request... [2018-09-18 11:26:12,274 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1772 GetRequests, 1689 SyntacticMatches, 3 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1713 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=1308, Invalid=5334, Unknown=0, NotChecked=0, Total=6642 [2018-09-18 11:26:12,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62049 states. [2018-09-18 11:26:12,317 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-18 11:26:12,321 WARN L206 ceAbstractionStarter]: Timeout [2018-09-18 11:26:12,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 11:26:12 BoogieIcfgContainer [2018-09-18 11:26:12,322 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-18 11:26:12,323 INFO L168 Benchmark]: Toolchain (without parser) took 249383.36 ms. Allocated memory was 1.5 GB in the beginning and 3.7 GB in the end (delta: 2.2 GB). Free memory was 1.4 GB in the beginning and 2.7 GB in the end (delta: -1.3 GB). Peak memory consumption was 847.3 MB. Max. memory is 7.1 GB. [2018-09-18 11:26:12,324 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-18 11:26:12,325 INFO L168 Benchmark]: CACSL2BoogieTranslator took 890.22 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: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. [2018-09-18 11:26:12,326 INFO L168 Benchmark]: Boogie Procedure Inliner took 198.08 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. [2018-09-18 11:26:12,327 INFO L168 Benchmark]: Boogie Preprocessor took 395.27 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 813.7 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -937.6 MB). Peak memory consumption was 49.4 MB. Max. memory is 7.1 GB. [2018-09-18 11:26:12,328 INFO L168 Benchmark]: RCFGBuilder took 4486.41 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.1 GB in the end (delta: 169.6 MB). Peak memory consumption was 169.6 MB. Max. memory is 7.1 GB. [2018-09-18 11:26:12,329 INFO L168 Benchmark]: TraceAbstraction took 243404.19 ms. Allocated memory was 2.3 GB in the beginning and 3.7 GB in the end (delta: 1.4 GB). Free memory was 2.1 GB in the beginning and 2.7 GB in the end (delta: -658.1 MB). Peak memory consumption was 717.1 MB. Max. memory is 7.1 GB. [2018-09-18 11:26:12,336 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 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 890.22 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: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 198.08 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 395.27 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 813.7 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -937.6 MB). Peak memory consumption was 49.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 4486.41 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.1 GB in the end (delta: 169.6 MB). Peak memory consumption was 169.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 243404.19 ms. Allocated memory was 2.3 GB in the beginning and 3.7 GB in the end (delta: 1.4 GB). Free memory was 2.1 GB in the beginning and 2.7 GB in the end (delta: -658.1 MB). Peak memory consumption was 717.1 MB. 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 executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 243.3s OverallTime, 10 OverallIterations, 4 TraceHistogramMax, 181.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2236 SDtfs, 13624 SDslu, 3115 SDs, 0 SdLazy, 27375 SolverSat, 5820 SolverUnsat, 41 SolverUnknown, 0 SolverNotchecked, 147.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4546 GetRequests, 4013 SyntacticMatches, 353 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7334 ImplicationChecksByTransitivity, 64.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45986occurred in iteration=9, 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: 3.7s AutomataMinimizationTime, 10 MinimizatonAttempts, 2929 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 54.7s InterpolantComputationTime, 4327 NumberOfCodeBlocks, 4327 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 6477 ConstructedInterpolants, 633 QuantifiedInterpolants, 25812784 SizeOfPredicates, 28 NumberOfNonLiveVariables, 3709 ConjunctsInSsa, 115 ConjunctsInUnsatCore, 24 InterpolantComputations, 9 PerfectInterpolantSequences, 3454/4631 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-0-2018-09-18_11-26-12-366.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-0-2018-09-18_11-26-12-366.csv Completed graceful shutdown