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/Problem15_label24_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-14 17:46:19,402 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-14 17:46:19,405 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-14 17:46:19,416 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-14 17:46:19,417 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-14 17:46:19,418 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-14 17:46:19,419 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-14 17:46:19,421 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-14 17:46:19,422 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-14 17:46:19,423 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-14 17:46:19,424 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-14 17:46:19,424 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-14 17:46:19,425 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-14 17:46:19,426 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-14 17:46:19,427 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-14 17:46:19,428 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-14 17:46:19,429 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-14 17:46:19,431 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-14 17:46:19,433 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-14 17:46:19,434 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-14 17:46:19,435 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-14 17:46:19,436 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-14 17:46:19,439 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-14 17:46:19,439 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-14 17:46:19,439 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-14 17:46:19,440 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-14 17:46:19,441 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-14 17:46:19,442 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-14 17:46:19,443 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-14 17:46:19,444 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-14 17:46:19,444 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-14 17:46:19,445 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-14 17:46:19,445 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-14 17:46:19,445 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-14 17:46:19,446 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-14 17:46:19,447 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-14 17:46:19,447 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-14 17:46:19,462 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-14 17:46:19,462 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-14 17:46:19,463 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-14 17:46:19,463 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-14 17:46:19,463 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-14 17:46:19,464 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-14 17:46:19,464 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-14 17:46:19,464 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-14 17:46:19,464 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-14 17:46:19,464 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-14 17:46:19,465 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-14 17:46:19,465 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-14 17:46:19,465 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-14 17:46:19,466 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-14 17:46:19,466 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-14 17:46:19,466 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-14 17:46:19,466 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-14 17:46:19,466 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-14 17:46:19,467 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-14 17:46:19,467 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-14 17:46:19,467 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-14 17:46:19,467 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-14 17:46:19,467 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-14 17:46:19,467 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 17:46:19,468 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-14 17:46:19,468 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-14 17:46:19,468 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-14 17:46:19,468 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-14 17:46:19,468 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-14 17:46:19,469 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-14 17:46:19,469 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-14 17:46:19,469 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-14 17:46:19,469 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-14 17:46:19,523 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-14 17:46:19,538 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-14 17:46:19,544 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-14 17:46:19,545 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-14 17:46:19,546 INFO L276 PluginConnector]: CDTParser initialized [2018-09-14 17:46:19,546 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label24_true-unreach-call.c [2018-09-14 17:46:19,938 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/767b3f8ed/98292de5951a42409635664edad39c44/FLAG5170b9ef7 [2018-09-14 17:46:20,303 INFO L277 CDTParser]: Found 1 translation units. [2018-09-14 17:46:20,305 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label24_true-unreach-call.c [2018-09-14 17:46:20,329 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/767b3f8ed/98292de5951a42409635664edad39c44/FLAG5170b9ef7 [2018-09-14 17:46:20,351 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/767b3f8ed/98292de5951a42409635664edad39c44 [2018-09-14 17:46:20,364 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-14 17:46:20,367 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-14 17:46:20,368 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-14 17:46:20,368 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-14 17:46:20,375 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-14 17:46:20,376 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 05:46:20" (1/1) ... [2018-09-14 17:46:20,379 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5786f47e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:46:20, skipping insertion in model container [2018-09-14 17:46:20,379 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 05:46:20" (1/1) ... [2018-09-14 17:46:20,389 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-14 17:46:21,174 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 17:46:21,193 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-14 17:46:21,504 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 17:46:21,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:46:21 WrapperNode [2018-09-14 17:46:21,652 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-14 17:46:21,653 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-14 17:46:21,653 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-14 17:46:21,653 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-14 17:46:21,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:46:21" (1/1) ... [2018-09-14 17:46:21,739 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:46:21" (1/1) ... [2018-09-14 17:46:21,906 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-14 17:46:21,907 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-14 17:46:21,907 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-14 17:46:21,907 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-14 17:46:22,340 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:46:21" (1/1) ... [2018-09-14 17:46:22,340 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:46:21" (1/1) ... [2018-09-14 17:46:22,370 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:46:21" (1/1) ... [2018-09-14 17:46:22,371 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:46:21" (1/1) ... [2018-09-14 17:46:22,449 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:46:21" (1/1) ... [2018-09-14 17:46:22,465 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:46:21" (1/1) ... [2018-09-14 17:46:22,508 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:46:21" (1/1) ... [2018-09-14 17:46:22,550 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-14 17:46:22,551 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-14 17:46:22,551 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-14 17:46:22,551 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-14 17:46:22,552 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:46:21" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 17:46:22,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-14 17:46:22,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-14 17:46:22,626 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-14 17:46:22,627 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-14 17:46:22,627 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-14 17:46:22,627 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-14 17:46:22,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-14 17:46:22,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-14 17:46:22,627 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-14 17:46:22,628 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-14 17:46:30,829 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-14 17:46:30,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 05:46:30 BoogieIcfgContainer [2018-09-14 17:46:30,830 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-14 17:46:30,831 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-14 17:46:30,831 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-14 17:46:30,835 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-14 17:46:30,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 05:46:20" (1/3) ... [2018-09-14 17:46:30,837 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e58e598 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 05:46:30, skipping insertion in model container [2018-09-14 17:46:30,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:46:21" (2/3) ... [2018-09-14 17:46:30,837 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e58e598 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 05:46:30, skipping insertion in model container [2018-09-14 17:46:30,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 05:46:30" (3/3) ... [2018-09-14 17:46:30,840 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label24_true-unreach-call.c [2018-09-14 17:46:30,850 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-14 17:46:30,864 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-14 17:46:30,919 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-14 17:46:30,920 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-14 17:46:30,920 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-14 17:46:30,920 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-14 17:46:30,921 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-14 17:46:30,921 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-14 17:46:30,921 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-14 17:46:30,921 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-14 17:46:30,921 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-14 17:46:30,962 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-09-14 17:46:30,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-09-14 17:46:30,971 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:46:30,972 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] [2018-09-14 17:46:30,973 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:46:30,979 INFO L82 PathProgramCache]: Analyzing trace with hash -1425761551, now seen corresponding path program 1 times [2018-09-14 17:46:30,982 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:46:31,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:46:31,031 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:46:31,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:46:31,032 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:46:31,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:46:31,493 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:46:31,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:46:31,625 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:46:31,625 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-14 17:46:31,626 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:46:31,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 17:46:31,646 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 17:46:31,647 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 17:46:31,649 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 3 states. [2018-09-14 17:46:36,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:46:36,379 INFO L93 Difference]: Finished difference Result 1198 states and 2158 transitions. [2018-09-14 17:46:36,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 17:46:36,381 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 45 [2018-09-14 17:46:36,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:46:36,405 INFO L225 Difference]: With dead ends: 1198 [2018-09-14 17:46:36,405 INFO L226 Difference]: Without dead ends: 758 [2018-09-14 17:46:36,417 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 17:46:36,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2018-09-14 17:46:36,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 754. [2018-09-14 17:46:36,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 754 states. [2018-09-14 17:46:36,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1328 transitions. [2018-09-14 17:46:36,550 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1328 transitions. Word has length 45 [2018-09-14 17:46:36,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:46:36,550 INFO L480 AbstractCegarLoop]: Abstraction has 754 states and 1328 transitions. [2018-09-14 17:46:36,551 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 17:46:36,551 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1328 transitions. [2018-09-14 17:46:36,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-09-14 17:46:36,558 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:46:36,558 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:46:36,559 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:46:36,559 INFO L82 PathProgramCache]: Analyzing trace with hash 146607380, now seen corresponding path program 1 times [2018-09-14 17:46:36,559 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:46:36,561 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:46:36,561 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:46:36,561 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:46:36,561 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:46:36,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:46:36,839 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:46:36,839 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:46:36,839 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-14 17:46:36,840 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:46:36,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:46:36,842 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:46:36,842 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-14 17:46:36,843 INFO L87 Difference]: Start difference. First operand 754 states and 1328 transitions. Second operand 5 states. [2018-09-14 17:46:45,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:46:45,210 INFO L93 Difference]: Finished difference Result 2229 states and 3961 transitions. [2018-09-14 17:46:45,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 17:46:45,211 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2018-09-14 17:46:45,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:46:45,225 INFO L225 Difference]: With dead ends: 2229 [2018-09-14 17:46:45,225 INFO L226 Difference]: Without dead ends: 1481 [2018-09-14 17:46:45,229 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 [2018-09-14 17:46:45,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1481 states. [2018-09-14 17:46:45,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1481 to 1449. [2018-09-14 17:46:45,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1449 states. [2018-09-14 17:46:45,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1449 states to 1449 states and 2254 transitions. [2018-09-14 17:46:45,298 INFO L78 Accepts]: Start accepts. Automaton has 1449 states and 2254 transitions. Word has length 119 [2018-09-14 17:46:45,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:46:45,299 INFO L480 AbstractCegarLoop]: Abstraction has 1449 states and 2254 transitions. [2018-09-14 17:46:45,299 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:46:45,299 INFO L276 IsEmpty]: Start isEmpty. Operand 1449 states and 2254 transitions. [2018-09-14 17:46:45,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-09-14 17:46:45,310 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:46:45,312 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:46:45,312 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:46:45,312 INFO L82 PathProgramCache]: Analyzing trace with hash -762150644, now seen corresponding path program 1 times [2018-09-14 17:46:45,312 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:46:45,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:46:45,314 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:46:45,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:46:45,314 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:46:45,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:46:45,696 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:46:46,093 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:46:46,093 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:46:46,093 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 17:46:46,094 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:46:46,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:46:46,094 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:46:46,095 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:46:46,095 INFO L87 Difference]: Start difference. First operand 1449 states and 2254 transitions. Second operand 6 states. [2018-09-14 17:46:54,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:46:54,514 INFO L93 Difference]: Finished difference Result 4188 states and 6605 transitions. [2018-09-14 17:46:54,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:46:54,516 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 131 [2018-09-14 17:46:54,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:46:54,536 INFO L225 Difference]: With dead ends: 4188 [2018-09-14 17:46:54,536 INFO L226 Difference]: Without dead ends: 2745 [2018-09-14 17:46:54,546 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 17:46:54,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2745 states. [2018-09-14 17:46:54,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2745 to 2711. [2018-09-14 17:46:54,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2711 states. [2018-09-14 17:46:54,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2711 states to 2711 states and 3819 transitions. [2018-09-14 17:46:54,646 INFO L78 Accepts]: Start accepts. Automaton has 2711 states and 3819 transitions. Word has length 131 [2018-09-14 17:46:54,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:46:54,647 INFO L480 AbstractCegarLoop]: Abstraction has 2711 states and 3819 transitions. [2018-09-14 17:46:54,647 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:46:54,647 INFO L276 IsEmpty]: Start isEmpty. Operand 2711 states and 3819 transitions. [2018-09-14 17:46:54,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-09-14 17:46:54,649 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:46:54,650 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:46:54,650 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:46:54,650 INFO L82 PathProgramCache]: Analyzing trace with hash -131413768, now seen corresponding path program 1 times [2018-09-14 17:46:54,651 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:46:54,652 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:46:54,652 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:46:54,652 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:46:54,652 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:46:54,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:46:55,157 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:46:55,158 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:46:55,158 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 17:46:55,158 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:46:55,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:46:55,159 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:46:55,159 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:46:55,160 INFO L87 Difference]: Start difference. First operand 2711 states and 3819 transitions. Second operand 6 states. [2018-09-14 17:47:00,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:47:00,813 INFO L93 Difference]: Finished difference Result 6682 states and 9546 transitions. [2018-09-14 17:47:00,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:47:00,814 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 132 [2018-09-14 17:47:00,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:47:00,836 INFO L225 Difference]: With dead ends: 6682 [2018-09-14 17:47:00,836 INFO L226 Difference]: Without dead ends: 3977 [2018-09-14 17:47:00,849 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 17:47:00,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3977 states. [2018-09-14 17:47:00,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3977 to 3953. [2018-09-14 17:47:00,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3953 states. [2018-09-14 17:47:00,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3953 states to 3953 states and 5247 transitions. [2018-09-14 17:47:00,966 INFO L78 Accepts]: Start accepts. Automaton has 3953 states and 5247 transitions. Word has length 132 [2018-09-14 17:47:00,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:47:00,967 INFO L480 AbstractCegarLoop]: Abstraction has 3953 states and 5247 transitions. [2018-09-14 17:47:00,967 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:47:00,967 INFO L276 IsEmpty]: Start isEmpty. Operand 3953 states and 5247 transitions. [2018-09-14 17:47:00,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-09-14 17:47:00,971 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:47:00,971 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:47:00,972 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:47:00,972 INFO L82 PathProgramCache]: Analyzing trace with hash 61536093, now seen corresponding path program 1 times [2018-09-14 17:47:00,972 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:47:00,973 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:47:00,973 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:47:00,973 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:47:00,973 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:47:01,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:47:01,230 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:47:01,230 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:47:01,230 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 17:47:01,230 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:47:01,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:47:01,231 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:47:01,231 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:47:01,232 INFO L87 Difference]: Start difference. First operand 3953 states and 5247 transitions. Second operand 6 states. [2018-09-14 17:47:17,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:47:17,135 INFO L93 Difference]: Finished difference Result 14092 states and 19045 transitions. [2018-09-14 17:47:17,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 17:47:17,135 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 172 [2018-09-14 17:47:17,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:47:17,179 INFO L225 Difference]: With dead ends: 14092 [2018-09-14 17:47:17,179 INFO L226 Difference]: Without dead ends: 10145 [2018-09-14 17:47:17,203 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 [2018-09-14 17:47:17,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10145 states. [2018-09-14 17:47:17,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10145 to 9934. [2018-09-14 17:47:17,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9934 states. [2018-09-14 17:47:17,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9934 states to 9934 states and 12579 transitions. [2018-09-14 17:47:17,442 INFO L78 Accepts]: Start accepts. Automaton has 9934 states and 12579 transitions. Word has length 172 [2018-09-14 17:47:17,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:47:17,442 INFO L480 AbstractCegarLoop]: Abstraction has 9934 states and 12579 transitions. [2018-09-14 17:47:17,443 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:47:17,443 INFO L276 IsEmpty]: Start isEmpty. Operand 9934 states and 12579 transitions. [2018-09-14 17:47:17,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-09-14 17:47:17,449 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:47:17,450 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 17:47:17,450 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:47:17,450 INFO L82 PathProgramCache]: Analyzing trace with hash 183841615, now seen corresponding path program 1 times [2018-09-14 17:47:17,450 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:47:17,451 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:47:17,451 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:47:17,452 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:47:17,452 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:47:17,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:47:17,752 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 5 [2018-09-14 17:47:17,775 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-09-14 17:47:17,776 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:47:17,776 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 17:47:17,776 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:47:17,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 17:47:17,777 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 17:47:17,777 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:47:17,777 INFO L87 Difference]: Start difference. First operand 9934 states and 12579 transitions. Second operand 4 states. [2018-09-14 17:47:23,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:47:23,564 INFO L93 Difference]: Finished difference Result 31159 states and 40874 transitions. [2018-09-14 17:47:23,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 17:47:23,565 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 200 [2018-09-14 17:47:23,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:47:23,649 INFO L225 Difference]: With dead ends: 31159 [2018-09-14 17:47:23,649 INFO L226 Difference]: Without dead ends: 21231 [2018-09-14 17:47:23,723 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 [2018-09-14 17:47:23,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21231 states. [2018-09-14 17:47:24,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21231 to 20903. [2018-09-14 17:47:24,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20903 states. [2018-09-14 17:47:24,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20903 states to 20903 states and 25690 transitions. [2018-09-14 17:47:24,312 INFO L78 Accepts]: Start accepts. Automaton has 20903 states and 25690 transitions. Word has length 200 [2018-09-14 17:47:24,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:47:24,313 INFO L480 AbstractCegarLoop]: Abstraction has 20903 states and 25690 transitions. [2018-09-14 17:47:24,313 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 17:47:24,313 INFO L276 IsEmpty]: Start isEmpty. Operand 20903 states and 25690 transitions. [2018-09-14 17:47:24,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2018-09-14 17:47:24,327 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:47:24,328 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 17:47:24,328 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:47:24,328 INFO L82 PathProgramCache]: Analyzing trace with hash 1258150557, now seen corresponding path program 1 times [2018-09-14 17:47:24,329 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:47:24,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:47:24,329 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:47:24,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:47:24,330 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:47:24,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:47:24,585 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 3 [2018-09-14 17:47:24,604 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-09-14 17:47:24,605 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:47:24,605 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-14 17:47:24,605 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:47:24,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 17:47:24,606 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 17:47:24,606 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 17:47:24,606 INFO L87 Difference]: Start difference. First operand 20903 states and 25690 transitions. Second operand 3 states. [2018-09-14 17:47:28,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:47:28,455 INFO L93 Difference]: Finished difference Result 47534 states and 60369 transitions. [2018-09-14 17:47:28,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 17:47:28,456 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 213 [2018-09-14 17:47:28,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:47:28,569 INFO L225 Difference]: With dead ends: 47534 [2018-09-14 17:47:28,569 INFO L226 Difference]: Without dead ends: 26637 [2018-09-14 17:47:28,632 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 17:47:28,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26637 states. [2018-09-14 17:47:29,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26637 to 26543. [2018-09-14 17:47:29,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26543 states. [2018-09-14 17:47:29,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26543 states to 26543 states and 33539 transitions. [2018-09-14 17:47:29,184 INFO L78 Accepts]: Start accepts. Automaton has 26543 states and 33539 transitions. Word has length 213 [2018-09-14 17:47:29,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:47:29,185 INFO L480 AbstractCegarLoop]: Abstraction has 26543 states and 33539 transitions. [2018-09-14 17:47:29,185 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 17:47:29,185 INFO L276 IsEmpty]: Start isEmpty. Operand 26543 states and 33539 transitions. [2018-09-14 17:47:29,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-09-14 17:47:29,200 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:47:29,200 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 17:47:29,201 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:47:29,201 INFO L82 PathProgramCache]: Analyzing trace with hash -79355213, now seen corresponding path program 1 times [2018-09-14 17:47:29,201 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:47:29,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:47:29,202 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:47:29,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:47:29,202 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:47:29,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:47:29,713 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 155 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:47:29,714 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:47:29,714 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:47:29,732 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:47:29,732 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:47:29,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:47:29,849 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:47:30,326 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 155 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:47:30,327 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:47:30,855 WARN L178 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-09-14 17:47:31,533 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 155 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:47:31,565 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:47:31,565 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 [2018-09-14 17:47:31,595 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:47:31,595 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:47:31,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:47:31,763 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:47:31,986 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 155 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:47:31,987 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:47:32,753 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 155 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:47:32,756 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:47:32,756 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-14 17:47:32,757 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:47:32,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 17:47:32,760 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 17:47:32,760 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-14 17:47:32,760 INFO L87 Difference]: Start difference. First operand 26543 states and 33539 transitions. Second operand 9 states. [2018-09-14 17:47:49,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:47:49,090 INFO L93 Difference]: Finished difference Result 64011 states and 96144 transitions. [2018-09-14 17:47:49,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-09-14 17:47:49,091 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 218 [2018-09-14 17:47:49,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:47:49,389 INFO L225 Difference]: With dead ends: 64011 [2018-09-14 17:47:49,389 INFO L226 Difference]: Without dead ends: 37474 [2018-09-14 17:47:49,746 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 900 GetRequests, 872 SyntacticMatches, 6 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=172, Invalid=380, Unknown=0, NotChecked=0, Total=552 [2018-09-14 17:47:49,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37474 states. [2018-09-14 17:47:51,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37474 to 36082. [2018-09-14 17:47:51,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36082 states. [2018-09-14 17:47:51,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36082 states to 36082 states and 46574 transitions. [2018-09-14 17:47:51,225 INFO L78 Accepts]: Start accepts. Automaton has 36082 states and 46574 transitions. Word has length 218 [2018-09-14 17:47:51,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:47:51,225 INFO L480 AbstractCegarLoop]: Abstraction has 36082 states and 46574 transitions. [2018-09-14 17:47:51,225 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 17:47:51,226 INFO L276 IsEmpty]: Start isEmpty. Operand 36082 states and 46574 transitions. [2018-09-14 17:47:51,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-09-14 17:47:51,257 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:47:51,257 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 17:47:51,258 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:47:51,258 INFO L82 PathProgramCache]: Analyzing trace with hash 224817809, now seen corresponding path program 1 times [2018-09-14 17:47:51,258 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:47:51,259 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:47:51,259 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:47:51,259 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:47:51,259 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:47:51,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:47:51,963 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 81 proven. 2 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-09-14 17:47:51,963 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:47:51,963 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:47:51,979 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:47:51,980 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:47:52,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:47:52,067 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:47:52,810 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 118 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2018-09-14 17:47:52,811 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:47:53,127 WARN L178 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 15 [2018-09-14 17:47:53,760 WARN L178 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 27 [2018-09-14 17:47:54,306 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 76 proven. 76 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:47:54,327 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:47:54,327 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 5] total 12 [2018-09-14 17:47:54,327 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:47:54,327 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:47:54,328 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:47:54,328 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2018-09-14 17:47:54,328 INFO L87 Difference]: Start difference. First operand 36082 states and 46574 transitions. Second operand 5 states. [2018-09-14 17:48:07,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:48:07,428 INFO L93 Difference]: Finished difference Result 73950 states and 95710 transitions. [2018-09-14 17:48:07,430 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:48:07,430 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 226 [2018-09-14 17:48:07,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:48:07,592 INFO L225 Difference]: With dead ends: 73950 [2018-09-14 17:48:07,592 INFO L226 Difference]: Without dead ends: 37879 [2018-09-14 17:48:07,769 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 448 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2018-09-14 17:48:07,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37879 states. [2018-09-14 17:48:08,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37879 to 37478. [2018-09-14 17:48:08,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37478 states. [2018-09-14 17:48:08,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37478 states to 37478 states and 48155 transitions. [2018-09-14 17:48:08,551 INFO L78 Accepts]: Start accepts. Automaton has 37478 states and 48155 transitions. Word has length 226 [2018-09-14 17:48:08,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:48:08,551 INFO L480 AbstractCegarLoop]: Abstraction has 37478 states and 48155 transitions. [2018-09-14 17:48:08,551 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:48:08,551 INFO L276 IsEmpty]: Start isEmpty. Operand 37478 states and 48155 transitions. [2018-09-14 17:48:08,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2018-09-14 17:48:08,582 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:48:08,582 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:48:08,582 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:48:08,583 INFO L82 PathProgramCache]: Analyzing trace with hash -1869550741, now seen corresponding path program 1 times [2018-09-14 17:48:08,583 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:48:08,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:48:08,584 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:48:08,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:48:08,584 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:48:08,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:48:09,206 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2018-09-14 17:48:09,206 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:48:09,207 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-14 17:48:09,207 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:48:09,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 17:48:09,207 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 17:48:09,207 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 17:48:09,208 INFO L87 Difference]: Start difference. First operand 37478 states and 48155 transitions. Second operand 3 states. [2018-09-14 17:48:12,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:48:12,780 INFO L93 Difference]: Finished difference Result 79443 states and 105569 transitions. [2018-09-14 17:48:12,780 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 17:48:12,780 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 345 [2018-09-14 17:48:12,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:48:13,011 INFO L225 Difference]: With dead ends: 79443 [2018-09-14 17:48:13,011 INFO L226 Difference]: Without dead ends: 42299 [2018-09-14 17:48:13,218 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 17:48:13,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42299 states. [2018-09-14 17:48:14,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42299 to 42290. [2018-09-14 17:48:14,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42290 states. [2018-09-14 17:48:14,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42290 states to 42290 states and 53888 transitions. [2018-09-14 17:48:14,283 INFO L78 Accepts]: Start accepts. Automaton has 42290 states and 53888 transitions. Word has length 345 [2018-09-14 17:48:14,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:48:14,284 INFO L480 AbstractCegarLoop]: Abstraction has 42290 states and 53888 transitions. [2018-09-14 17:48:14,284 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 17:48:14,284 INFO L276 IsEmpty]: Start isEmpty. Operand 42290 states and 53888 transitions. [2018-09-14 17:48:14,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2018-09-14 17:48:14,336 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:48:14,337 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:48:14,337 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:48:14,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1052369654, now seen corresponding path program 1 times [2018-09-14 17:48:14,337 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:48:14,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:48:14,338 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:48:14,339 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:48:14,339 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:48:14,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:48:14,737 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:48:15,273 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 226 proven. 101 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-09-14 17:48:15,273 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:48:15,273 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:48:15,280 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:48:15,280 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:48:15,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:48:15,396 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:48:15,653 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 323 proven. 2 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-09-14 17:48:15,653 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:48:15,888 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 323 proven. 2 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-09-14 17:48:15,909 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:48:15,909 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:48:15,926 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:48:15,926 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:48:16,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:48:16,199 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:48:16,310 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 323 proven. 2 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-09-14 17:48:16,310 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:48:16,631 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 323 proven. 2 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-09-14 17:48:16,637 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:48:16,637 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5, 5, 5] total 13 [2018-09-14 17:48:16,637 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:48:16,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-14 17:48:16,639 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-14 17:48:16,639 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2018-09-14 17:48:16,639 INFO L87 Difference]: Start difference. First operand 42290 states and 53888 transitions. Second operand 11 states. [2018-09-14 17:48:33,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:48:33,414 INFO L93 Difference]: Finished difference Result 90593 states and 116688 transitions. [2018-09-14 17:48:33,415 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-09-14 17:48:33,415 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 404 [2018-09-14 17:48:33,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:48:33,548 INFO L225 Difference]: With dead ends: 90593 [2018-09-14 17:48:33,548 INFO L226 Difference]: Without dead ends: 48637 [2018-09-14 17:48:33,732 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1656 GetRequests, 1619 SyntacticMatches, 10 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=214, Invalid=598, Unknown=0, NotChecked=0, Total=812 [2018-09-14 17:48:33,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48637 states. [2018-09-14 17:48:34,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48637 to 47315. [2018-09-14 17:48:34,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47315 states. [2018-09-14 17:48:34,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47315 states to 47315 states and 53808 transitions. [2018-09-14 17:48:34,502 INFO L78 Accepts]: Start accepts. Automaton has 47315 states and 53808 transitions. Word has length 404 [2018-09-14 17:48:34,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:48:34,502 INFO L480 AbstractCegarLoop]: Abstraction has 47315 states and 53808 transitions. [2018-09-14 17:48:34,502 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-14 17:48:34,503 INFO L276 IsEmpty]: Start isEmpty. Operand 47315 states and 53808 transitions. [2018-09-14 17:48:34,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 554 [2018-09-14 17:48:34,532 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:48:34,532 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:48:34,533 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:48:34,533 INFO L82 PathProgramCache]: Analyzing trace with hash -2020171052, now seen corresponding path program 1 times [2018-09-14 17:48:34,533 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:48:34,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:48:34,534 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:48:34,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:48:34,534 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:48:34,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:48:34,969 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2018-09-14 17:48:34,970 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:48:34,970 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-14 17:48:34,970 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:48:34,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 17:48:34,971 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 17:48:34,971 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 17:48:34,972 INFO L87 Difference]: Start difference. First operand 47315 states and 53808 transitions. Second operand 3 states. [2018-09-14 17:48:38,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:48:38,149 INFO L93 Difference]: Finished difference Result 112413 states and 129756 transitions. [2018-09-14 17:48:38,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 17:48:38,149 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 553 [2018-09-14 17:48:38,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:48:38,259 INFO L225 Difference]: With dead ends: 112413 [2018-09-14 17:48:38,259 INFO L226 Difference]: Without dead ends: 55503 [2018-09-14 17:48:38,363 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 17:48:38,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55503 states. [2018-09-14 17:48:39,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55503 to 52547. [2018-09-14 17:48:39,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52547 states. [2018-09-14 17:48:39,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52547 states to 52547 states and 57692 transitions. [2018-09-14 17:48:39,115 INFO L78 Accepts]: Start accepts. Automaton has 52547 states and 57692 transitions. Word has length 553 [2018-09-14 17:48:39,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:48:39,116 INFO L480 AbstractCegarLoop]: Abstraction has 52547 states and 57692 transitions. [2018-09-14 17:48:39,116 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 17:48:39,117 INFO L276 IsEmpty]: Start isEmpty. Operand 52547 states and 57692 transitions. [2018-09-14 17:48:39,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 698 [2018-09-14 17:48:39,145 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:48:39,146 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 17:48:39,147 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:48:39,147 INFO L82 PathProgramCache]: Analyzing trace with hash -1639548219, now seen corresponding path program 1 times [2018-09-14 17:48:39,147 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:48:39,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:48:39,148 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:48:39,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:48:39,148 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:48:39,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:48:39,748 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-09-14 17:48:40,594 INFO L134 CoverageAnalysis]: Checked inductivity of 819 backedges. 531 proven. 2 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2018-09-14 17:48:40,595 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:48:40,595 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:48:40,948 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:48:40,949 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:48:41,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:48:41,151 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:48:59,147 WARN L178 SmtUtils]: Spent 16.58 s on a formula simplification. DAG size of input: 415 DAG size of output: 45 [2018-09-14 17:48:59,938 INFO L134 CoverageAnalysis]: Checked inductivity of 819 backedges. 161 proven. 0 refuted. 0 times theorem prover too weak. 658 trivial. 0 not checked. [2018-09-14 17:48:59,938 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:49:00,277 INFO L134 CoverageAnalysis]: Checked inductivity of 819 backedges. 161 proven. 0 refuted. 0 times theorem prover too weak. 658 trivial. 0 not checked. [2018-09-14 17:49:00,298 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-14 17:49:00,299 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 8 [2018-09-14 17:49:00,299 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:49:00,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 17:49:00,300 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 17:49:00,300 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-09-14 17:49:00,300 INFO L87 Difference]: Start difference. First operand 52547 states and 57692 transitions. Second operand 3 states. Received shutdown request... [2018-09-14 17:50:26,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 17:50:26,512 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-14 17:50:26,519 WARN L206 ceAbstractionStarter]: Timeout [2018-09-14 17:50:26,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 05:50:26 BoogieIcfgContainer [2018-09-14 17:50:26,520 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-14 17:50:26,523 INFO L168 Benchmark]: Toolchain (without parser) took 246158.21 ms. Allocated memory was 1.5 GB in the beginning and 3.8 GB in the end (delta: 2.3 GB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -172.1 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-09-14 17:50:26,524 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-14 17:50:26,524 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1284.10 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: 126.8 MB). Peak memory consumption was 126.8 MB. Max. memory is 7.1 GB. [2018-09-14 17:50:26,525 INFO L168 Benchmark]: Boogie Procedure Inliner took 254.07 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-09-14 17:50:26,526 INFO L168 Benchmark]: Boogie Preprocessor took 643.83 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 904.4 MB). Free memory was 1.3 GB in the beginning and 2.4 GB in the end (delta: -1.1 GB). Peak memory consumption was 89.6 MB. Max. memory is 7.1 GB. [2018-09-14 17:50:26,527 INFO L168 Benchmark]: RCFGBuilder took 8278.79 ms. Allocated memory is still 2.4 GB. Free memory was 2.4 GB in the beginning and 2.1 GB in the end (delta: 293.8 MB). Peak memory consumption was 293.8 MB. Max. memory is 7.1 GB. [2018-09-14 17:50:26,528 INFO L168 Benchmark]: TraceAbstraction took 235688.83 ms. Allocated memory was 2.4 GB in the beginning and 3.8 GB in the end (delta: 1.4 GB). Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 459.3 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-09-14 17:50:26,533 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1284.10 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: 126.8 MB). Peak memory consumption was 126.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 254.07 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 643.83 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 904.4 MB). Free memory was 1.3 GB in the beginning and 2.4 GB in the end (delta: -1.1 GB). Peak memory consumption was 89.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8278.79 ms. Allocated memory is still 2.4 GB. Free memory was 2.4 GB in the beginning and 2.1 GB in the end (delta: 293.8 MB). Peak memory consumption was 293.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 235688.83 ms. Allocated memory was 2.4 GB in the beginning and 3.8 GB in the end (delta: 1.4 GB). Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 459.3 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 121]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 121). Cancelled while BasicCegarLoop was constructing difference of abstraction (52547states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement), while ReachableStatesComputation was computing reachable states (13556 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 235.6s OverallTime, 13 OverallIterations, 5 TraceHistogramMax, 194.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3943 SDtfs, 16099 SDslu, 2903 SDs, 0 SdLazy, 33129 SolverSat, 6452 SolverUnsat, 35 SolverUnknown, 0 SolverNotchecked, 177.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4479 GetRequests, 4357 SyntacticMatches, 23 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 24.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52547occurred in iteration=12, 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: 6.6s AutomataMinimizationTime, 12 MinimizatonAttempts, 6807 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 30.1s InterpolantComputationTime, 5622 NumberOfCodeBlocks, 5622 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 7764 ConstructedInterpolants, 41 QuantifiedInterpolants, 11206398 SizeOfPredicates, 7 NumberOfNonLiveVariables, 3429 ConjunctsInSsa, 44 ConjunctsInUnsatCore, 25 InterpolantComputations, 12 PerfectInterpolantSequences, 6881/7080 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/Problem15_label24_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-14_17-50-26-565.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem15_label24_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-14_17-50-26-565.csv Completed graceful shutdown