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/Problem18_label04_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-18 12:18:12,976 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-18 12:18:12,978 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-18 12:18:12,990 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-18 12:18:12,991 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-18 12:18:12,992 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-18 12:18:12,993 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-18 12:18:12,995 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-18 12:18:12,996 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-18 12:18:12,997 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-18 12:18:12,998 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-18 12:18:12,998 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-18 12:18:12,999 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-18 12:18:13,000 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-18 12:18:13,001 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-18 12:18:13,002 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-18 12:18:13,003 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-18 12:18:13,005 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-18 12:18:13,007 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-18 12:18:13,008 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-18 12:18:13,010 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-18 12:18:13,011 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-18 12:18:13,013 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-09-18 12:18:13,027 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-18 12:18:13,027 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-18 12:18:13,028 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-18 12:18:13,029 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-18 12:18:13,029 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 12:18:13,044 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-18 12:18:13,045 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-18 12:18:13,045 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-18 12:18:13,046 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-18 12:18:13,046 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-18 12:18:13,046 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-18 12:18:13,046 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-18 12:18:13,047 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-18 12:18:13,047 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-18 12:18:13,047 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-18 12:18:13,047 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-18 12:18:13,047 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-18 12:18:13,048 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-18 12:18:13,048 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-18 12:18:13,048 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-18 12:18:13,049 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-18 12:18:13,049 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-18 12:18:13,049 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-18 12:18:13,049 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-18 12:18:13,049 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-18 12:18:13,049 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-18 12:18:13,050 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-18 12:18:13,050 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-18 12:18:13,050 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-18 12:18:13,050 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 12:18:13,051 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-18 12:18:13,051 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-18 12:18:13,051 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-18 12:18:13,051 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-18 12:18:13,051 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-18 12:18:13,051 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-18 12:18:13,052 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-18 12:18:13,052 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-18 12:18:13,052 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-18 12:18:13,094 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-18 12:18:13,107 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-18 12:18:13,111 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-18 12:18:13,112 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-18 12:18:13,113 INFO L276 PluginConnector]: CDTParser initialized [2018-09-18 12:18:13,113 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label04_true-unreach-call.c [2018-09-18 12:18:13,472 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99ac564dd/2d2c6fbd501c49aeb5d1d15173a83dbe/FLAGb703a72dd [2018-09-18 12:18:13,910 INFO L277 CDTParser]: Found 1 translation units. [2018-09-18 12:18:13,911 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label04_true-unreach-call.c [2018-09-18 12:18:13,940 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99ac564dd/2d2c6fbd501c49aeb5d1d15173a83dbe/FLAGb703a72dd [2018-09-18 12:18:13,963 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99ac564dd/2d2c6fbd501c49aeb5d1d15173a83dbe [2018-09-18 12:18:13,973 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-18 12:18:13,976 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-18 12:18:13,978 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-18 12:18:13,978 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-18 12:18:13,985 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-18 12:18:13,986 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 12:18:13" (1/1) ... [2018-09-18 12:18:13,991 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a69133f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:18:13, skipping insertion in model container [2018-09-18 12:18:13,991 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 12:18:13" (1/1) ... [2018-09-18 12:18:14,004 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-18 12:18:15,042 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 12:18:15,066 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-18 12:18:15,504 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 12:18:15,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:18:15 WrapperNode [2018-09-18 12:18:15,655 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-18 12:18:15,656 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-18 12:18:15,656 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-18 12:18:15,656 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-18 12:18:15,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:18:15" (1/1) ... [2018-09-18 12:18:15,742 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:18:15" (1/1) ... [2018-09-18 12:18:15,847 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-18 12:18:15,848 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-18 12:18:15,848 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-18 12:18:15,849 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-18 12:18:16,250 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:18:15" (1/1) ... [2018-09-18 12:18:16,250 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:18:15" (1/1) ... [2018-09-18 12:18:16,282 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:18:15" (1/1) ... [2018-09-18 12:18:16,282 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:18:15" (1/1) ... [2018-09-18 12:18:16,373 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:18:15" (1/1) ... [2018-09-18 12:18:16,403 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:18:15" (1/1) ... [2018-09-18 12:18:16,447 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:18:15" (1/1) ... [2018-09-18 12:18:16,507 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-18 12:18:16,507 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-18 12:18:16,508 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-18 12:18:16,508 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-18 12:18:16,509 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:18:15" (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 12:18:16,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-18 12:18:16,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-18 12:18:16,586 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-18 12:18:16,586 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-18 12:18:16,587 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-18 12:18:16,587 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-18 12:18:16,587 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-18 12:18:16,587 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-18 12:18:16,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-18 12:18:16,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-18 12:18:16,588 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-18 12:18:16,588 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-18 12:18:24,611 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-18 12:18:24,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 12:18:24 BoogieIcfgContainer [2018-09-18 12:18:24,612 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-18 12:18:24,613 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-18 12:18:24,613 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-18 12:18:24,616 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-18 12:18:24,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 12:18:13" (1/3) ... [2018-09-18 12:18:24,617 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@543c6038 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 12:18:24, skipping insertion in model container [2018-09-18 12:18:24,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:18:15" (2/3) ... [2018-09-18 12:18:24,618 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@543c6038 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 12:18:24, skipping insertion in model container [2018-09-18 12:18:24,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 12:18:24" (3/3) ... [2018-09-18 12:18:24,620 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label04_true-unreach-call.c [2018-09-18 12:18:24,630 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-18 12:18:24,640 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-18 12:18:24,702 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-18 12:18:24,703 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-18 12:18:24,703 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-18 12:18:24,703 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-18 12:18:24,703 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-18 12:18:24,703 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-18 12:18:24,704 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-18 12:18:24,704 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-18 12:18:24,704 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-18 12:18:24,742 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-09-18 12:18:24,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-09-18 12:18:24,759 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:18:24,760 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:18:24,761 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:18:24,766 INFO L82 PathProgramCache]: Analyzing trace with hash 1330496791, now seen corresponding path program 1 times [2018-09-18 12:18:24,768 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:18:24,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:18:24,816 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:18:24,816 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:18:24,816 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:18:24,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:18:25,237 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 12:18:25,344 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 12:18:25,347 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 12:18:25,347 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-18 12:18:25,348 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:18:25,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 12:18:25,370 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 12:18:25,371 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 12:18:25,374 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-09-18 12:18:31,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:18:31,732 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-09-18 12:18:31,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 12:18:31,734 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 59 [2018-09-18 12:18:31,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:18:31,763 INFO L225 Difference]: With dead ends: 2251 [2018-09-18 12:18:31,763 INFO L226 Difference]: Without dead ends: 1474 [2018-09-18 12:18:31,776 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 12:18:31,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-09-18 12:18:31,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-09-18 12:18:31,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-09-18 12:18:31,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2800 transitions. [2018-09-18 12:18:31,983 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2800 transitions. Word has length 59 [2018-09-18 12:18:31,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:18:31,984 INFO L480 AbstractCegarLoop]: Abstraction has 1474 states and 2800 transitions. [2018-09-18 12:18:31,984 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 12:18:31,984 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2800 transitions. [2018-09-18 12:18:31,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-09-18 12:18:31,999 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:18:32,000 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 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 12:18:32,001 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:18:32,001 INFO L82 PathProgramCache]: Analyzing trace with hash -360553496, now seen corresponding path program 1 times [2018-09-18 12:18:32,002 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:18:32,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:18:32,004 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:18:32,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:18:32,005 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:18:32,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:18:32,357 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 12:18:32,389 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:18:32,389 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 12:18:32,389 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-18 12:18:32,390 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:18:32,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 12:18:32,392 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 12:18:32,392 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-18 12:18:32,392 INFO L87 Difference]: Start difference. First operand 1474 states and 2800 transitions. Second operand 5 states. [2018-09-18 12:18:40,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:18:40,862 INFO L93 Difference]: Finished difference Result 4419 states and 8483 transitions. [2018-09-18 12:18:40,867 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 12:18:40,867 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2018-09-18 12:18:40,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:18:40,893 INFO L225 Difference]: With dead ends: 4419 [2018-09-18 12:18:40,893 INFO L226 Difference]: Without dead ends: 2951 [2018-09-18 12:18:40,899 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-18 12:18:40,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2018-09-18 12:18:40,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 2925. [2018-09-18 12:18:40,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2925 states. [2018-09-18 12:18:41,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2925 states to 2925 states and 5205 transitions. [2018-09-18 12:18:41,005 INFO L78 Accepts]: Start accepts. Automaton has 2925 states and 5205 transitions. Word has length 129 [2018-09-18 12:18:41,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:18:41,006 INFO L480 AbstractCegarLoop]: Abstraction has 2925 states and 5205 transitions. [2018-09-18 12:18:41,006 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 12:18:41,006 INFO L276 IsEmpty]: Start isEmpty. Operand 2925 states and 5205 transitions. [2018-09-18 12:18:41,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-09-18 12:18:41,010 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:18:41,011 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 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 12:18:41,011 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:18:41,011 INFO L82 PathProgramCache]: Analyzing trace with hash 1538599181, now seen corresponding path program 1 times [2018-09-18 12:18:41,011 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:18:41,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:18:41,012 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:18:41,013 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:18:41,013 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:18:41,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:18:41,215 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:18:41,216 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 12:18:41,216 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-18 12:18:41,216 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:18:41,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 12:18:41,217 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 12:18:41,217 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-18 12:18:41,218 INFO L87 Difference]: Start difference. First operand 2925 states and 5205 transitions. Second operand 5 states. [2018-09-18 12:18:47,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:18:47,005 INFO L93 Difference]: Finished difference Result 7345 states and 13001 transitions. [2018-09-18 12:18:47,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 12:18:47,005 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 130 [2018-09-18 12:18:47,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:18:47,031 INFO L225 Difference]: With dead ends: 7345 [2018-09-18 12:18:47,031 INFO L226 Difference]: Without dead ends: 4426 [2018-09-18 12:18:47,040 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-18 12:18:47,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4426 states. [2018-09-18 12:18:47,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4426 to 4391. [2018-09-18 12:18:47,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4391 states. [2018-09-18 12:18:47,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4391 states to 4391 states and 6473 transitions. [2018-09-18 12:18:47,165 INFO L78 Accepts]: Start accepts. Automaton has 4391 states and 6473 transitions. Word has length 130 [2018-09-18 12:18:47,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:18:47,165 INFO L480 AbstractCegarLoop]: Abstraction has 4391 states and 6473 transitions. [2018-09-18 12:18:47,166 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 12:18:47,166 INFO L276 IsEmpty]: Start isEmpty. Operand 4391 states and 6473 transitions. [2018-09-18 12:18:47,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-09-18 12:18:47,168 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:18:47,169 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 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 12:18:47,170 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:18:47,170 INFO L82 PathProgramCache]: Analyzing trace with hash 1623571697, now seen corresponding path program 1 times [2018-09-18 12:18:47,170 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:18:47,171 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:18:47,171 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:18:47,171 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:18:47,172 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:18:47,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:18:47,343 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:18:47,343 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 12:18:47,344 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-18 12:18:47,344 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:18:47,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 12:18:47,345 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 12:18:47,345 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-18 12:18:47,345 INFO L87 Difference]: Start difference. First operand 4391 states and 6473 transitions. Second operand 5 states. [2018-09-18 12:18:58,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:18:58,113 INFO L93 Difference]: Finished difference Result 14819 states and 21982 transitions. [2018-09-18 12:18:58,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-18 12:18:58,123 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2018-09-18 12:18:58,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:18:58,172 INFO L225 Difference]: With dead ends: 14819 [2018-09-18 12:18:58,172 INFO L226 Difference]: Without dead ends: 10434 [2018-09-18 12:18:58,195 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-18 12:18:58,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10434 states. [2018-09-18 12:18:58,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10434 to 10284. [2018-09-18 12:18:58,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10284 states. [2018-09-18 12:18:58,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10284 states to 10284 states and 13624 transitions. [2018-09-18 12:18:58,469 INFO L78 Accepts]: Start accepts. Automaton has 10284 states and 13624 transitions. Word has length 132 [2018-09-18 12:18:58,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:18:58,469 INFO L480 AbstractCegarLoop]: Abstraction has 10284 states and 13624 transitions. [2018-09-18 12:18:58,469 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 12:18:58,470 INFO L276 IsEmpty]: Start isEmpty. Operand 10284 states and 13624 transitions. [2018-09-18 12:18:58,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-09-18 12:18:58,476 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:18:58,476 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:18:58,476 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:18:58,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1302404966, now seen corresponding path program 1 times [2018-09-18 12:18:58,477 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:18:58,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:18:58,478 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:18:58,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:18:58,478 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:18:58,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:18:58,786 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-09-18 12:18:58,786 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 12:18:58,786 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-18 12:18:58,786 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:18:58,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-18 12:18:58,788 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-18 12:18:58,788 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 12:18:58,789 INFO L87 Difference]: Start difference. First operand 10284 states and 13624 transitions. Second operand 4 states. [2018-09-18 12:19:06,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:19:06,480 INFO L93 Difference]: Finished difference Result 37616 states and 51784 transitions. [2018-09-18 12:19:06,480 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-18 12:19:06,480 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 236 [2018-09-18 12:19:06,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:19:06,586 INFO L225 Difference]: With dead ends: 37616 [2018-09-18 12:19:06,587 INFO L226 Difference]: Without dead ends: 27338 [2018-09-18 12:19:06,643 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 12:19:06,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27338 states. [2018-09-18 12:19:07,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27338 to 27325. [2018-09-18 12:19:07,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27325 states. [2018-09-18 12:19:07,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27325 states to 27325 states and 35001 transitions. [2018-09-18 12:19:07,276 INFO L78 Accepts]: Start accepts. Automaton has 27325 states and 35001 transitions. Word has length 236 [2018-09-18 12:19:07,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:19:07,276 INFO L480 AbstractCegarLoop]: Abstraction has 27325 states and 35001 transitions. [2018-09-18 12:19:07,276 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-18 12:19:07,277 INFO L276 IsEmpty]: Start isEmpty. Operand 27325 states and 35001 transitions. [2018-09-18 12:19:07,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2018-09-18 12:19:07,293 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:19:07,293 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:19:07,294 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:19:07,294 INFO L82 PathProgramCache]: Analyzing trace with hash -308767533, now seen corresponding path program 1 times [2018-09-18 12:19:07,294 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:19:07,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:19:07,295 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:19:07,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:19:07,296 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:19:07,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:19:07,884 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 233 proven. 73 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-09-18 12:19:07,884 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:19:07,885 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 12:19:07,901 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:19:07,902 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:19:08,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:19:08,067 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:19:08,561 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 329 proven. 2 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2018-09-18 12:19:08,561 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:19:09,206 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 233 proven. 73 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-09-18 12:19:09,240 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:19:09,240 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 12:19:09,270 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:19:09,270 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:19:09,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:19:09,485 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:19:09,773 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 329 proven. 2 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2018-09-18 12:19:09,774 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:19:10,257 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 233 proven. 73 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-09-18 12:19:10,261 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 12:19:10,261 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-18 12:19:10,261 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 12:19:10,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 12:19:10,265 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 12:19:10,265 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-18 12:19:10,265 INFO L87 Difference]: Start difference. First operand 27325 states and 35001 transitions. Second operand 9 states. [2018-09-18 12:19:26,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:19:26,520 INFO L93 Difference]: Finished difference Result 68706 states and 91328 transitions. [2018-09-18 12:19:26,521 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-18 12:19:26,521 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 336 [2018-09-18 12:19:26,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:19:26,795 INFO L225 Difference]: With dead ends: 68706 [2018-09-18 12:19:26,795 INFO L226 Difference]: Without dead ends: 41353 [2018-09-18 12:19:26,918 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1366 GetRequests, 1341 SyntacticMatches, 7 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2018-09-18 12:19:26,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41353 states. [2018-09-18 12:19:27,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41353 to 39930. [2018-09-18 12:19:27,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39930 states. [2018-09-18 12:19:27,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39930 states to 39930 states and 47831 transitions. [2018-09-18 12:19:27,959 INFO L78 Accepts]: Start accepts. Automaton has 39930 states and 47831 transitions. Word has length 336 [2018-09-18 12:19:27,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:19:27,960 INFO L480 AbstractCegarLoop]: Abstraction has 39930 states and 47831 transitions. [2018-09-18 12:19:27,960 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 12:19:27,960 INFO L276 IsEmpty]: Start isEmpty. Operand 39930 states and 47831 transitions. [2018-09-18 12:19:27,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2018-09-18 12:19:27,972 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:19:27,973 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:19:27,973 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:19:27,973 INFO L82 PathProgramCache]: Analyzing trace with hash 778236225, now seen corresponding path program 1 times [2018-09-18 12:19:27,973 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:19:27,974 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:19:27,974 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:19:27,975 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:19:27,975 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:19:28,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:19:28,882 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 32 [2018-09-18 12:19:29,579 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 257 proven. 87 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-09-18 12:19:29,580 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:19:29,580 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 12:19:29,588 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:19:29,588 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:19:29,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:19:29,693 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:19:30,077 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 236 proven. 0 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2018-09-18 12:19:30,078 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:19:31,576 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 156 proven. 176 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2018-09-18 12:19:31,597 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 12:19:31,597 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [12, 5] total 17 [2018-09-18 12:19:31,598 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:19:31,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 12:19:31,599 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 12:19:31,599 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2018-09-18 12:19:31,599 INFO L87 Difference]: Start difference. First operand 39930 states and 47831 transitions. Second operand 5 states. [2018-09-18 12:19:39,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:19:39,195 INFO L93 Difference]: Finished difference Result 84376 states and 101507 transitions. [2018-09-18 12:19:39,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-18 12:19:39,196 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 352 [2018-09-18 12:19:39,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:19:39,365 INFO L225 Difference]: With dead ends: 84376 [2018-09-18 12:19:39,365 INFO L226 Difference]: Without dead ends: 45125 [2018-09-18 12:19:39,457 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 718 GetRequests, 699 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2018-09-18 12:19:39,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45125 states. [2018-09-18 12:19:40,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45125 to 44996. [2018-09-18 12:19:40,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44996 states. [2018-09-18 12:19:40,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44996 states to 44996 states and 53388 transitions. [2018-09-18 12:19:40,313 INFO L78 Accepts]: Start accepts. Automaton has 44996 states and 53388 transitions. Word has length 352 [2018-09-18 12:19:40,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:19:40,314 INFO L480 AbstractCegarLoop]: Abstraction has 44996 states and 53388 transitions. [2018-09-18 12:19:40,314 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 12:19:40,314 INFO L276 IsEmpty]: Start isEmpty. Operand 44996 states and 53388 transitions. [2018-09-18 12:19:40,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2018-09-18 12:19:40,325 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:19:40,325 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:19:40,326 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:19:40,326 INFO L82 PathProgramCache]: Analyzing trace with hash 37048140, now seen corresponding path program 1 times [2018-09-18 12:19:40,326 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:19:40,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:19:40,327 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:19:40,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:19:40,327 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:19:40,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:19:41,124 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 215 proven. 219 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 12:19:41,125 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:19:41,125 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 12:19:41,134 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:19:41,134 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:19:41,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:19:41,248 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:19:41,902 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 384 proven. 2 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2018-09-18 12:19:41,902 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:19:42,525 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 266 proven. 87 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-09-18 12:19:42,546 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:19:42,546 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 12:19:42,562 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:19:42,562 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:19:42,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:19:42,811 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:19:43,643 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-09-18 12:19:44,071 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 333 proven. 53 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2018-09-18 12:19:44,072 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:19:45,011 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 166 proven. 268 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 12:19:45,013 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 12:19:45,013 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 5, 8, 8] total 27 [2018-09-18 12:19:45,014 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 12:19:45,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-09-18 12:19:45,015 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-09-18 12:19:45,016 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=558, Unknown=0, NotChecked=0, Total=702 [2018-09-18 12:19:45,016 INFO L87 Difference]: Start difference. First operand 44996 states and 53388 transitions. Second operand 16 states. [2018-09-18 12:20:12,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:20:12,068 INFO L93 Difference]: Finished difference Result 90345 states and 108085 transitions. [2018-09-18 12:20:12,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-09-18 12:20:12,076 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 441 [2018-09-18 12:20:12,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:20:12,260 INFO L225 Difference]: With dead ends: 90345 [2018-09-18 12:20:12,260 INFO L226 Difference]: Without dead ends: 45031 [2018-09-18 12:20:12,378 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1878 GetRequests, 1797 SyntacticMatches, 4 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1985 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1244, Invalid=4918, Unknown=0, NotChecked=0, Total=6162 [2018-09-18 12:20:12,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45031 states. [2018-09-18 12:20:13,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45031 to 42689. [2018-09-18 12:20:13,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42689 states. [2018-09-18 12:20:13,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42689 states to 42689 states and 48603 transitions. [2018-09-18 12:20:13,179 INFO L78 Accepts]: Start accepts. Automaton has 42689 states and 48603 transitions. Word has length 441 [2018-09-18 12:20:13,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:20:13,180 INFO L480 AbstractCegarLoop]: Abstraction has 42689 states and 48603 transitions. [2018-09-18 12:20:13,180 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-09-18 12:20:13,180 INFO L276 IsEmpty]: Start isEmpty. Operand 42689 states and 48603 transitions. [2018-09-18 12:20:13,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2018-09-18 12:20:13,190 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:20:13,190 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:20:13,191 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:20:13,191 INFO L82 PathProgramCache]: Analyzing trace with hash 1178024607, now seen corresponding path program 1 times [2018-09-18 12:20:13,191 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:20:13,192 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:20:13,192 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:20:13,192 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:20:13,192 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:20:13,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:20:14,354 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 95 proven. 107 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:20:14,354 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:20:14,354 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 12:20:14,362 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:20:14,362 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:20:14,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:20:14,479 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:20:14,818 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2018-09-18 12:20:14,818 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:20:15,691 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 104 proven. 93 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 12:20:15,714 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 12:20:15,714 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [12, 6] total 17 [2018-09-18 12:20:15,714 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:20:15,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 12:20:15,716 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 12:20:15,716 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2018-09-18 12:20:15,716 INFO L87 Difference]: Start difference. First operand 42689 states and 48603 transitions. Second operand 5 states. [2018-09-18 12:20:22,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:20:22,870 INFO L93 Difference]: Finished difference Result 102663 states and 118910 transitions. [2018-09-18 12:20:22,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-18 12:20:22,871 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 465 [2018-09-18 12:20:22,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:20:23,042 INFO L225 Difference]: With dead ends: 102663 [2018-09-18 12:20:23,042 INFO L226 Difference]: Without dead ends: 60688 [2018-09-18 12:20:23,172 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 951 GetRequests, 924 SyntacticMatches, 9 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2018-09-18 12:20:23,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60688 states. [2018-09-18 12:20:24,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60688 to 59749. [2018-09-18 12:20:24,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59749 states. [2018-09-18 12:20:24,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59749 states to 59749 states and 66904 transitions. [2018-09-18 12:20:24,344 INFO L78 Accepts]: Start accepts. Automaton has 59749 states and 66904 transitions. Word has length 465 [2018-09-18 12:20:24,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:20:24,345 INFO L480 AbstractCegarLoop]: Abstraction has 59749 states and 66904 transitions. [2018-09-18 12:20:24,345 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 12:20:24,345 INFO L276 IsEmpty]: Start isEmpty. Operand 59749 states and 66904 transitions. [2018-09-18 12:20:24,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 994 [2018-09-18 12:20:24,379 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:20:24,380 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:20:24,380 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:20:24,381 INFO L82 PathProgramCache]: Analyzing trace with hash -6693962, now seen corresponding path program 1 times [2018-09-18 12:20:24,381 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:20:24,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:20:24,382 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:20:24,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:20:24,382 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:20:24,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:20:26,106 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 10 [2018-09-18 12:20:26,588 WARN L178 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 16 [2018-09-18 12:20:30,542 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 11 proven. 649 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:20:30,542 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:20:30,542 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:20:30,552 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:20:30,552 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:20:30,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:20:30,790 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:20:31,497 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 356 proven. 2 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2018-09-18 12:20:31,497 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:20:31,734 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 26 [2018-09-18 12:20:32,604 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 356 proven. 2 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2018-09-18 12:20:32,626 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:20:32,626 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 9 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 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 12:20:32,643 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:20:32,643 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:20:33,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:20:33,164 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:20:33,800 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 356 proven. 2 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2018-09-18 12:20:33,800 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:20:34,878 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 356 proven. 2 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2018-09-18 12:20:34,881 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 12:20:34,882 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 5, 5, 5, 5] total 34 [2018-09-18 12:20:34,882 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 12:20:34,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-09-18 12:20:34,884 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-09-18 12:20:34,884 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=983, Unknown=0, NotChecked=0, Total=1122 [2018-09-18 12:20:34,884 INFO L87 Difference]: Start difference. First operand 59749 states and 66904 transitions. Second operand 32 states. [2018-09-18 12:20:45,333 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2018-09-18 12:20:53,237 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 35 [2018-09-18 12:20:55,639 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2018-09-18 12:21:02,570 WARN L178 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-09-18 12:21:06,681 WARN L178 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 22 [2018-09-18 12:21:11,265 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 36 [2018-09-18 12:21:19,267 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 44 [2018-09-18 12:21:27,772 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2018-09-18 12:21:27,981 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2018-09-18 12:21:28,808 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2018-09-18 12:21:33,367 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 52 [2018-09-18 12:21:43,269 WARN L178 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 22 [2018-09-18 12:21:49,011 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 45 [2018-09-18 12:21:54,248 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 45 [2018-09-18 12:22:02,211 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 44 [2018-09-18 12:22:06,840 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 Received shutdown request... [2018-09-18 12:22:07,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 257 states. [2018-09-18 12:22:07,857 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-18 12:22:07,863 WARN L206 ceAbstractionStarter]: Timeout [2018-09-18 12:22:07,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 12:22:07 BoogieIcfgContainer [2018-09-18 12:22:07,863 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-18 12:22:07,864 INFO L168 Benchmark]: Toolchain (without parser) took 233890.73 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 2.6 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-09-18 12:22:07,865 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 12:22:07,866 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1677.57 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 171.8 MB). Peak memory consumption was 171.8 MB. Max. memory is 7.1 GB. [2018-09-18 12:22:07,866 INFO L168 Benchmark]: Boogie Procedure Inliner took 191.78 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-09-18 12:22:07,867 INFO L168 Benchmark]: Boogie Preprocessor took 658.93 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 869.3 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 85.7 MB. Max. memory is 7.1 GB. [2018-09-18 12:22:07,868 INFO L168 Benchmark]: RCFGBuilder took 8104.80 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.8 GB in the end (delta: 489.3 MB). Peak memory consumption was 489.3 MB. Max. memory is 7.1 GB. [2018-09-18 12:22:07,869 INFO L168 Benchmark]: TraceAbstraction took 223250.58 ms. Allocated memory was 2.4 GB in the beginning and 4.0 GB in the end (delta: 1.6 GB). Free memory was 1.8 GB in the beginning and 2.6 GB in the end (delta: -800.3 MB). Peak memory consumption was 824.0 MB. Max. memory is 7.1 GB. [2018-09-18 12:22:07,874 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 1677.57 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 171.8 MB). Peak memory consumption was 171.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 191.78 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 658.93 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 869.3 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 85.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8104.80 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.8 GB in the end (delta: 489.3 MB). Peak memory consumption was 489.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 223250.58 ms. Allocated memory was 2.4 GB in the beginning and 4.0 GB in the end (delta: 1.6 GB). Free memory was 1.8 GB in the beginning and 2.6 GB in the end (delta: -800.3 MB). Peak memory consumption was 824.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 165]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 165). Cancelled while BasicCegarLoop was constructing difference of abstraction (59749states) and FLOYD_HOARE automaton (currently 257 states, 32 states before enhancement), while ReachableStatesComputation was computing reachable states (66442 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 223.1s OverallTime, 10 OverallIterations, 4 TraceHistogramMax, 191.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1954 SDtfs, 67039 SDslu, 5320 SDs, 0 SdLazy, 147407 SolverSat, 14790 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 137.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9379 GetRequests, 8918 SyntacticMatches, 34 SemanticMatches, 427 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34589 ImplicationChecksByTransitivity, 29.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=59749occurred 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: 5.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 5057 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.8s SatisfiabilityAnalysisTime, 18.9s InterpolantComputationTime, 7630 NumberOfCodeBlocks, 7630 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 11961 ConstructedInterpolants, 0 QuantifiedInterpolants, 40315514 SizeOfPredicates, 18 NumberOfNonLiveVariables, 6254 ConjunctsInSsa, 95 ConjunctsInUnsatCore, 26 InterpolantComputations, 7 PerfectInterpolantSequences, 7669/9641 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/Problem18_label04_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-18_12-22-07-890.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem18_label04_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-18_12-22-07-890.csv Completed graceful shutdown