java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label02_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-18 12:18:12,402 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-18 12:18:12,405 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-18 12:18:12,417 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-18 12:18:12,417 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-18 12:18:12,418 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-18 12:18:12,420 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-18 12:18:12,421 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-18 12:18:12,423 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-18 12:18:12,424 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-18 12:18:12,425 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-18 12:18:12,426 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-18 12:18:12,426 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-18 12:18:12,428 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-18 12:18:12,429 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-18 12:18:12,430 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-18 12:18:12,430 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-18 12:18:12,432 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-18 12:18:12,435 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-18 12:18:12,436 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-18 12:18:12,437 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-18 12:18:12,439 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-18 12:18:12,441 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-18 12:18:12,442 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-18 12:18:12,442 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-18 12:18:12,443 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-18 12:18:12,444 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-18 12:18:12,445 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-18 12:18:12,446 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-18 12:18:12,447 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-18 12:18:12,447 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-18 12:18:12,448 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-18 12:18:12,448 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-18 12:18:12,448 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-18 12:18:12,449 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-18 12:18:12,450 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-18 12:18:12,450 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-18 12:18:12,466 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-18 12:18:12,467 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-18 12:18:12,468 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-18 12:18:12,468 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-18 12:18:12,468 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-18 12:18:12,468 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-18 12:18:12,468 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-18 12:18:12,469 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-18 12:18:12,469 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-18 12:18:12,469 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-18 12:18:12,469 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-18 12:18:12,469 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-18 12:18:12,470 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-18 12:18:12,470 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-18 12:18:12,471 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-18 12:18:12,471 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-18 12:18:12,471 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-18 12:18:12,471 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-18 12:18:12,471 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-18 12:18:12,471 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-18 12:18:12,472 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-18 12:18:12,472 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-18 12:18:12,472 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-18 12:18:12,472 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-18 12:18:12,472 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 12:18:12,473 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-18 12:18:12,473 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-18 12:18:12,473 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-18 12:18:12,473 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-18 12:18:12,473 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-18 12:18:12,474 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-18 12:18:12,474 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-18 12:18:12,474 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-18 12:18:12,474 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-18 12:18:12,537 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-18 12:18:12,555 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-18 12:18:12,561 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-18 12:18:12,563 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-18 12:18:12,563 INFO L276 PluginConnector]: CDTParser initialized [2018-09-18 12:18:12,564 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label02_true-unreach-call.c [2018-09-18 12:18:12,923 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3dbdb6b54/472dcaddba8f4f288a04f338b0699ba7/FLAG149cb2702 [2018-09-18 12:18:13,319 INFO L277 CDTParser]: Found 1 translation units. [2018-09-18 12:18:13,320 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label02_true-unreach-call.c [2018-09-18 12:18:13,348 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3dbdb6b54/472dcaddba8f4f288a04f338b0699ba7/FLAG149cb2702 [2018-09-18 12:18:13,365 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3dbdb6b54/472dcaddba8f4f288a04f338b0699ba7 [2018-09-18 12:18:13,376 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-18 12:18:13,380 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-18 12:18:13,381 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-18 12:18:13,381 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-18 12:18:13,388 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-18 12:18:13,389 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 12:18:13" (1/1) ... [2018-09-18 12:18:13,394 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68a2763a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:18:13, skipping insertion in model container [2018-09-18 12:18:13,394 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 12:18:13" (1/1) ... [2018-09-18 12:18:13,407 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-18 12:18:14,508 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 12:18:14,529 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-18 12:18:14,980 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 12:18:15,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:18:15 WrapperNode [2018-09-18 12:18:15,130 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-18 12:18:15,131 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-18 12:18:15,131 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-18 12:18:15,131 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-18 12:18:15,141 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:18:15" (1/1) ... [2018-09-18 12:18:15,217 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:18:15" (1/1) ... [2018-09-18 12:18:15,325 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-18 12:18:15,326 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-18 12:18:15,326 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-18 12:18:15,326 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-18 12:18:15,754 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:18:15" (1/1) ... [2018-09-18 12:18:15,754 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:18:15" (1/1) ... [2018-09-18 12:18:15,787 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:18:15" (1/1) ... [2018-09-18 12:18:15,787 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:18:15" (1/1) ... [2018-09-18 12:18:15,865 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:18:15" (1/1) ... [2018-09-18 12:18:15,891 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:18:15" (1/1) ... [2018-09-18 12:18:15,918 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:18:15" (1/1) ... [2018-09-18 12:18:15,943 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-18 12:18:15,944 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-18 12:18:15,944 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-18 12:18:15,945 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-18 12:18:15,947 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:18:15" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 12:18:16,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-18 12:18:16,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-18 12:18:16,018 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-18 12:18:16,018 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-18 12:18:16,018 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-18 12:18:16,018 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-18 12:18:16,019 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-18 12:18:16,019 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-18 12:18:16,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-18 12:18:16,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-18 12:18:16,020 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-18 12:18:16,020 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-18 12:18:25,014 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-18 12:18:25,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 12:18:25 BoogieIcfgContainer [2018-09-18 12:18:25,016 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-18 12:18:25,017 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-18 12:18:25,017 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-18 12:18:25,020 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-18 12:18:25,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 12:18:13" (1/3) ... [2018-09-18 12:18:25,021 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a6216a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 12:18:25, skipping insertion in model container [2018-09-18 12:18:25,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:18:15" (2/3) ... [2018-09-18 12:18:25,022 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a6216a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 12:18:25, skipping insertion in model container [2018-09-18 12:18:25,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 12:18:25" (3/3) ... [2018-09-18 12:18:25,024 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label02_true-unreach-call.c [2018-09-18 12:18:25,034 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-18 12:18:25,044 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-18 12:18:25,106 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-18 12:18:25,107 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-18 12:18:25,107 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-18 12:18:25,107 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-18 12:18:25,108 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-18 12:18:25,108 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-18 12:18:25,108 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-18 12:18:25,108 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-18 12:18:25,108 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-18 12:18:25,153 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-09-18 12:18:25,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-09-18 12:18:25,168 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:18:25,169 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:18:25,171 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:18:25,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1847175428, now seen corresponding path program 1 times [2018-09-18 12:18:25,178 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:18:25,228 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:18:25,228 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:18:25,229 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:18:25,229 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:18:25,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:18:25,694 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 12:18:25,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:18:25,835 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 12:18:25,835 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-18 12:18:25,836 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:18:25,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 12:18:25,861 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 12:18:25,862 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 12:18:25,865 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-09-18 12:18:33,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:18:33,181 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-09-18 12:18:33,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 12:18:33,182 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2018-09-18 12:18:33,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:18:33,215 INFO L225 Difference]: With dead ends: 2251 [2018-09-18 12:18:33,216 INFO L226 Difference]: Without dead ends: 1474 [2018-09-18 12:18:33,225 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 12:18:33,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-09-18 12:18:33,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-09-18 12:18:33,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-09-18 12:18:33,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2801 transitions. [2018-09-18 12:18:33,398 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2801 transitions. Word has length 68 [2018-09-18 12:18:33,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:18:33,398 INFO L480 AbstractCegarLoop]: Abstraction has 1474 states and 2801 transitions. [2018-09-18 12:18:33,399 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 12:18:33,399 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2801 transitions. [2018-09-18 12:18:33,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-09-18 12:18:33,414 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:18:33,415 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 12:18:33,415 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:18:33,417 INFO L82 PathProgramCache]: Analyzing trace with hash 1532118751, now seen corresponding path program 1 times [2018-09-18 12:18:33,417 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:18:33,419 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:18:33,419 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:18:33,419 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:18:33,420 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:18:33,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:18:33,721 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:18:33,722 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 12:18:33,722 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 12:18:33,722 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:18:33,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 12:18:33,724 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 12:18:33,724 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 12:18:33,725 INFO L87 Difference]: Start difference. First operand 1474 states and 2801 transitions. Second operand 6 states. [2018-09-18 12:18:43,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:18:43,808 INFO L93 Difference]: Finished difference Result 4422 states and 8490 transitions. [2018-09-18 12:18:43,809 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 12:18:43,809 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 143 [2018-09-18 12:18:43,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:18:43,829 INFO L225 Difference]: With dead ends: 4422 [2018-09-18 12:18:43,829 INFO L226 Difference]: Without dead ends: 2954 [2018-09-18 12:18:43,834 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-18 12:18:43,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2954 states. [2018-09-18 12:18:43,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2954 to 2928. [2018-09-18 12:18:43,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2928 states. [2018-09-18 12:18:43,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2928 states to 2928 states and 5043 transitions. [2018-09-18 12:18:43,923 INFO L78 Accepts]: Start accepts. Automaton has 2928 states and 5043 transitions. Word has length 143 [2018-09-18 12:18:43,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:18:43,924 INFO L480 AbstractCegarLoop]: Abstraction has 2928 states and 5043 transitions. [2018-09-18 12:18:43,924 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 12:18:43,924 INFO L276 IsEmpty]: Start isEmpty. Operand 2928 states and 5043 transitions. [2018-09-18 12:18:43,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-09-18 12:18:43,929 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:18:43,929 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 12:18:43,930 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:18:43,930 INFO L82 PathProgramCache]: Analyzing trace with hash -1969176313, now seen corresponding path program 1 times [2018-09-18 12:18:43,930 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:18:43,931 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:18:43,931 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:18:43,932 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:18:43,932 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:18:43,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:18:44,284 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:18:44,284 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 12:18:44,284 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 12:18:44,284 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:18:44,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 12:18:44,286 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 12:18:44,287 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-18 12:18:44,287 INFO L87 Difference]: Start difference. First operand 2928 states and 5043 transitions. Second operand 6 states. [2018-09-18 12:18:57,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:18:57,173 INFO L93 Difference]: Finished difference Result 11887 states and 21681 transitions. [2018-09-18 12:18:57,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-18 12:18:57,178 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 155 [2018-09-18 12:18:57,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:18:57,255 INFO L225 Difference]: With dead ends: 11887 [2018-09-18 12:18:57,256 INFO L226 Difference]: Without dead ends: 8965 [2018-09-18 12:18:57,287 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-09-18 12:18:57,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8965 states. [2018-09-18 12:18:57,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8965 to 8893. [2018-09-18 12:18:57,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8893 states. [2018-09-18 12:18:57,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8893 states to 8893 states and 13539 transitions. [2018-09-18 12:18:57,597 INFO L78 Accepts]: Start accepts. Automaton has 8893 states and 13539 transitions. Word has length 155 [2018-09-18 12:18:57,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:18:57,600 INFO L480 AbstractCegarLoop]: Abstraction has 8893 states and 13539 transitions. [2018-09-18 12:18:57,600 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 12:18:57,600 INFO L276 IsEmpty]: Start isEmpty. Operand 8893 states and 13539 transitions. [2018-09-18 12:18:57,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2018-09-18 12:18:57,608 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:18:57,609 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:18:57,609 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:18:57,609 INFO L82 PathProgramCache]: Analyzing trace with hash 642429817, now seen corresponding path program 1 times [2018-09-18 12:18:57,610 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:18:57,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:18:57,611 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:18:57,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:18:57,611 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:18:57,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:18:57,940 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 12:18:58,027 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 122 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 12:18:58,028 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:18:58,028 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:18:58,045 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:18:58,045 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:18:58,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:18:58,139 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:18:58,606 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2018-09-18 12:18:58,607 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:18:59,181 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 122 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 12:18:59,202 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 12:18:59,202 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 10 [2018-09-18 12:18:59,203 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:18:59,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 12:18:59,203 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 12:18:59,204 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2018-09-18 12:18:59,204 INFO L87 Difference]: Start difference. First operand 8893 states and 13539 transitions. Second operand 5 states. [2018-09-18 12:19:06,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:19:06,080 INFO L93 Difference]: Finished difference Result 22322 states and 34480 transitions. [2018-09-18 12:19:06,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 12:19:06,084 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 225 [2018-09-18 12:19:06,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:19:06,184 INFO L225 Difference]: With dead ends: 22322 [2018-09-18 12:19:06,184 INFO L226 Difference]: Without dead ends: 13435 [2018-09-18 12:19:06,220 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 445 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2018-09-18 12:19:06,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13435 states. [2018-09-18 12:19:06,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13435 to 13390. [2018-09-18 12:19:06,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13390 states. [2018-09-18 12:19:06,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13390 states to 13390 states and 19353 transitions. [2018-09-18 12:19:06,581 INFO L78 Accepts]: Start accepts. Automaton has 13390 states and 19353 transitions. Word has length 225 [2018-09-18 12:19:06,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:19:06,581 INFO L480 AbstractCegarLoop]: Abstraction has 13390 states and 19353 transitions. [2018-09-18 12:19:06,582 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 12:19:06,582 INFO L276 IsEmpty]: Start isEmpty. Operand 13390 states and 19353 transitions. [2018-09-18 12:19:06,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-09-18 12:19:06,590 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:19:06,591 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:19:06,591 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:19:06,591 INFO L82 PathProgramCache]: Analyzing trace with hash -1278893676, now seen corresponding path program 1 times [2018-09-18 12:19:06,591 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:19:06,592 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:19:06,592 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:19:06,593 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:19:06,593 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:19:06,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:19:07,010 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 215 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:19:07,010 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:19:07,011 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:19:07,021 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:19:07,021 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:19:07,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:19:07,108 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:19:07,352 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 215 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:19:07,352 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:19:07,936 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 215 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:19:07,958 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:19:07,959 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 4 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 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 12:19:07,977 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:19:07,978 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:19:08,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:19:08,148 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:19:08,432 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 215 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:19:08,432 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:19:08,731 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 215 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (4)] Exception during sending of exit command (exit): Broken pipe [2018-09-18 12:19:08,736 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 12:19:08,736 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 16 [2018-09-18 12:19:08,736 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 12:19:08,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 12:19:08,739 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 12:19:08,739 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2018-09-18 12:19:08,741 INFO L87 Difference]: Start difference. First operand 13390 states and 19353 transitions. Second operand 9 states. [2018-09-18 12:19:23,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:19:23,292 INFO L93 Difference]: Finished difference Result 46994 states and 83071 transitions. [2018-09-18 12:19:23,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-18 12:19:23,293 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 286 [2018-09-18 12:19:23,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:19:23,535 INFO L225 Difference]: With dead ends: 46994 [2018-09-18 12:19:23,535 INFO L226 Difference]: Without dead ends: 33610 [2018-09-18 12:19:23,663 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1165 GetRequests, 1141 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=143, Invalid=457, Unknown=0, NotChecked=0, Total=600 [2018-09-18 12:19:23,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33610 states. [2018-09-18 12:19:24,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33610 to 33313. [2018-09-18 12:19:24,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33313 states. [2018-09-18 12:19:25,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33313 states to 33313 states and 52952 transitions. [2018-09-18 12:19:25,139 INFO L78 Accepts]: Start accepts. Automaton has 33313 states and 52952 transitions. Word has length 286 [2018-09-18 12:19:25,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:19:25,140 INFO L480 AbstractCegarLoop]: Abstraction has 33313 states and 52952 transitions. [2018-09-18 12:19:25,141 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 12:19:25,142 INFO L276 IsEmpty]: Start isEmpty. Operand 33313 states and 52952 transitions. [2018-09-18 12:19:25,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2018-09-18 12:19:25,156 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:19:25,156 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:19:25,157 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:19:25,157 INFO L82 PathProgramCache]: Analyzing trace with hash 910952478, now seen corresponding path program 1 times [2018-09-18 12:19:25,157 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:19:25,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:19:25,158 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:19:25,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:19:25,159 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:19:25,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:19:25,703 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 260 proven. 73 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-09-18 12:19:25,704 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:19:25,704 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:19:25,719 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:19:25,719 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:19:25,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:19:25,822 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:19:26,162 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 354 proven. 2 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2018-09-18 12:19:26,162 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:19:26,355 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 260 proven. 73 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-09-18 12:19:26,377 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:19:26,378 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 12:19:26,397 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:19:26,397 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:19:26,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:19:26,610 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:19:26,728 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 354 proven. 2 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2018-09-18 12:19:26,728 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:19:26,875 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 260 proven. 73 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-09-18 12:19:26,877 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 12:19:26,877 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-18 12:19:26,878 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 12:19:26,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 12:19:26,879 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 12:19:26,879 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-18 12:19:26,879 INFO L87 Difference]: Start difference. First operand 33313 states and 52952 transitions. Second operand 9 states. [2018-09-18 12:19:41,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:19:41,415 INFO L93 Difference]: Finished difference Result 123030 states and 275713 transitions. [2018-09-18 12:19:41,415 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-18 12:19:41,415 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 352 [2018-09-18 12:19:41,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:19:42,595 INFO L225 Difference]: With dead ends: 123030 [2018-09-18 12:19:42,595 INFO L226 Difference]: Without dead ends: 77360 [2018-09-18 12:19:44,056 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1430 GetRequests, 1405 SyntacticMatches, 7 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2018-09-18 12:19:44,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77360 states. [2018-09-18 12:19:46,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77360 to 76366. [2018-09-18 12:19:46,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76366 states. [2018-09-18 12:19:47,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76366 states to 76366 states and 121117 transitions. [2018-09-18 12:19:47,051 INFO L78 Accepts]: Start accepts. Automaton has 76366 states and 121117 transitions. Word has length 352 [2018-09-18 12:19:47,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:19:47,052 INFO L480 AbstractCegarLoop]: Abstraction has 76366 states and 121117 transitions. [2018-09-18 12:19:47,052 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 12:19:47,052 INFO L276 IsEmpty]: Start isEmpty. Operand 76366 states and 121117 transitions. [2018-09-18 12:19:47,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2018-09-18 12:19:47,080 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:19:47,081 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:19:47,081 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:19:47,081 INFO L82 PathProgramCache]: Analyzing trace with hash -442739913, now seen corresponding path program 1 times [2018-09-18 12:19:47,081 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:19:47,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:19:47,082 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:19:47,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:19:47,083 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:19:47,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:19:47,472 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 12:19:48,909 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 122 proven. 82 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 12:19:48,910 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:19:48,910 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:19:48,923 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:19:48,923 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:19:49,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:19:49,044 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:19:49,798 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 147 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2018-09-18 12:19:49,799 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:19:50,524 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 122 proven. 82 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 12:19:50,545 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 12:19:50,545 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-09-18 12:19:50,545 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:19:50,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 12:19:50,546 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 12:19:50,546 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2018-09-18 12:19:50,546 INFO L87 Difference]: Start difference. First operand 76366 states and 121117 transitions. Second operand 5 states. [2018-09-18 12:19:59,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:19:59,709 INFO L93 Difference]: Finished difference Result 159393 states and 254584 transitions. [2018-09-18 12:19:59,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-18 12:19:59,710 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 487 [2018-09-18 12:19:59,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:20:00,457 INFO L225 Difference]: With dead ends: 159393 [2018-09-18 12:20:00,457 INFO L226 Difference]: Without dead ends: 83038 [2018-09-18 12:20:01,033 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 983 GetRequests, 970 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2018-09-18 12:20:01,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83038 states. [2018-09-18 12:20:03,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83038 to 83004. [2018-09-18 12:20:03,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83004 states. [2018-09-18 12:20:04,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83004 states to 83004 states and 127085 transitions. [2018-09-18 12:20:04,381 INFO L78 Accepts]: Start accepts. Automaton has 83004 states and 127085 transitions. Word has length 487 [2018-09-18 12:20:04,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:20:04,382 INFO L480 AbstractCegarLoop]: Abstraction has 83004 states and 127085 transitions. [2018-09-18 12:20:04,382 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 12:20:04,382 INFO L276 IsEmpty]: Start isEmpty. Operand 83004 states and 127085 transitions. [2018-09-18 12:20:04,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2018-09-18 12:20:04,401 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:20:04,401 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 12:20:04,402 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:20:04,402 INFO L82 PathProgramCache]: Analyzing trace with hash -1088306046, now seen corresponding path program 1 times [2018-09-18 12:20:04,402 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:20:04,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:20:04,403 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:20:04,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:20:04,403 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:20:04,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:20:04,892 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 309 proven. 86 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-09-18 12:20:04,892 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:20:04,892 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:20:04,900 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:20:04,900 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:20:05,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:20:05,029 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:20:05,265 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 416 proven. 2 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2018-09-18 12:20:05,265 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:20:06,335 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 309 proven. 86 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-09-18 12:20:06,356 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:20:06,356 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 12:20:06,374 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:20:06,374 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:20:06,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:20:06,658 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:20:06,885 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 416 proven. 2 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2018-09-18 12:20:06,885 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:20:07,186 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 309 proven. 86 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-09-18 12:20:07,189 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 12:20:07,190 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 13 [2018-09-18 12:20:07,190 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 12:20:07,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 12:20:07,191 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 12:20:07,191 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-09-18 12:20:07,191 INFO L87 Difference]: Start difference. First operand 83004 states and 127085 transitions. Second operand 9 states. [2018-09-18 12:20:16,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:20:16,509 INFO L93 Difference]: Finished difference Result 158296 states and 246559 transitions. [2018-09-18 12:20:16,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-18 12:20:16,509 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 514 [2018-09-18 12:20:16,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:20:17,049 INFO L225 Difference]: With dead ends: 158296 [2018-09-18 12:20:17,050 INFO L226 Difference]: Without dead ends: 83172 [2018-09-18 12:20:18,110 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2072 GetRequests, 2050 SyntacticMatches, 6 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2018-09-18 12:20:18,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83172 states. [2018-09-18 12:20:19,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83172 to 82942. [2018-09-18 12:20:19,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82942 states. [2018-09-18 12:20:19,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82942 states to 82942 states and 114251 transitions. [2018-09-18 12:20:19,895 INFO L78 Accepts]: Start accepts. Automaton has 82942 states and 114251 transitions. Word has length 514 [2018-09-18 12:20:19,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:20:19,896 INFO L480 AbstractCegarLoop]: Abstraction has 82942 states and 114251 transitions. [2018-09-18 12:20:19,896 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 12:20:19,897 INFO L276 IsEmpty]: Start isEmpty. Operand 82942 states and 114251 transitions. [2018-09-18 12:20:19,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 675 [2018-09-18 12:20:19,908 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:20:19,909 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:20:19,909 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:20:19,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1269184876, now seen corresponding path program 1 times [2018-09-18 12:20:19,910 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:20:19,911 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:20:19,911 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:20:19,911 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:20:19,911 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:20:19,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:20:24,805 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 334 proven. 2 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-09-18 12:20:24,805 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:20:24,805 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 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:20:24,820 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:20:24,820 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:20:24,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:20:24,988 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:20:25,282 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 334 proven. 2 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-09-18 12:20:25,282 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:20:25,624 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 334 proven. 2 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-09-18 12:20:25,646 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:20:25,646 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 11 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 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 12:20:25,662 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:20:25,662 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:20:26,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:20:26,034 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:20:26,289 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 334 proven. 2 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-09-18 12:20:26,289 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:20:26,583 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 334 proven. 2 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-09-18 12:20:26,585 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 12:20:26,586 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-18 12:20:26,586 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 12:20:26,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 12:20:26,588 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 12:20:26,588 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-18 12:20:26,588 INFO L87 Difference]: Start difference. First operand 82942 states and 114251 transitions. Second operand 9 states. [2018-09-18 12:20:41,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:20:41,775 INFO L93 Difference]: Finished difference Result 227892 states and 414852 transitions. [2018-09-18 12:20:41,775 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-09-18 12:20:41,775 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 674 [2018-09-18 12:20:41,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:20:42,390 INFO L225 Difference]: With dead ends: 227892 [2018-09-18 12:20:42,390 INFO L226 Difference]: Without dead ends: 109798 [2018-09-18 12:20:44,471 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2723 GetRequests, 2695 SyntacticMatches, 7 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=158, Invalid=348, Unknown=0, NotChecked=0, Total=506 [2018-09-18 12:20:44,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109798 states. [2018-09-18 12:20:47,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109798 to 108867. [2018-09-18 12:20:47,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108867 states. [2018-09-18 12:20:47,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108867 states to 108867 states and 176516 transitions. [2018-09-18 12:20:47,996 INFO L78 Accepts]: Start accepts. Automaton has 108867 states and 176516 transitions. Word has length 674 [2018-09-18 12:20:47,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:20:47,997 INFO L480 AbstractCegarLoop]: Abstraction has 108867 states and 176516 transitions. [2018-09-18 12:20:47,998 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 12:20:47,998 INFO L276 IsEmpty]: Start isEmpty. Operand 108867 states and 176516 transitions. [2018-09-18 12:20:48,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 720 [2018-09-18 12:20:48,009 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:20:48,010 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:20:48,010 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:20:48,010 INFO L82 PathProgramCache]: Analyzing trace with hash -2016710888, now seen corresponding path program 1 times [2018-09-18 12:20:48,010 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:20:48,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:20:48,011 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:20:48,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:20:48,011 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:20:48,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:20:48,768 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 189 proven. 0 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2018-09-18 12:20:48,768 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 12:20:48,768 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-18 12:20:48,768 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:20:48,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-18 12:20:48,770 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-18 12:20:48,770 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 12:20:48,770 INFO L87 Difference]: Start difference. First operand 108867 states and 176516 transitions. Second operand 4 states. [2018-09-18 12:20:57,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:20:57,114 INFO L93 Difference]: Finished difference Result 213405 states and 341954 transitions. [2018-09-18 12:20:57,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-18 12:20:57,114 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 719 [2018-09-18 12:20:57,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:20:57,704 INFO L225 Difference]: With dead ends: 213405 [2018-09-18 12:20:57,704 INFO L226 Difference]: Without dead ends: 104024 [2018-09-18 12:20:58,283 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 12:20:58,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104024 states. [2018-09-18 12:21:01,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104024 to 104010. [2018-09-18 12:21:01,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104010 states. [2018-09-18 12:21:01,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104010 states to 104010 states and 150359 transitions. [2018-09-18 12:21:01,713 INFO L78 Accepts]: Start accepts. Automaton has 104010 states and 150359 transitions. Word has length 719 [2018-09-18 12:21:01,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:21:01,714 INFO L480 AbstractCegarLoop]: Abstraction has 104010 states and 150359 transitions. [2018-09-18 12:21:01,714 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-18 12:21:01,714 INFO L276 IsEmpty]: Start isEmpty. Operand 104010 states and 150359 transitions. [2018-09-18 12:21:01,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 763 [2018-09-18 12:21:01,728 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:21:01,728 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:21:01,729 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:21:01,729 INFO L82 PathProgramCache]: Analyzing trace with hash 860135532, now seen corresponding path program 1 times [2018-09-18 12:21:01,729 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:21:01,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:21:01,730 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:21:01,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:21:01,730 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:21:01,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:21:02,051 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 12:21:03,690 INFO L134 CoverageAnalysis]: Checked inductivity of 611 backedges. 183 proven. 236 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2018-09-18 12:21:03,691 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:21:03,691 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:21:03,699 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:21:03,699 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:21:03,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:21:03,884 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:21:04,207 INFO L134 CoverageAnalysis]: Checked inductivity of 611 backedges. 301 proven. 0 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2018-09-18 12:21:04,207 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:21:05,280 INFO L134 CoverageAnalysis]: Checked inductivity of 611 backedges. 183 proven. 170 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2018-09-18 12:21:05,302 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 12:21:05,302 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 3] total 9 [2018-09-18 12:21:05,302 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:21:05,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 12:21:05,303 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 12:21:05,304 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2018-09-18 12:21:05,304 INFO L87 Difference]: Start difference. First operand 104010 states and 150359 transitions. Second operand 3 states. [2018-09-18 12:21:10,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:21:10,691 INFO L93 Difference]: Finished difference Result 215541 states and 314153 transitions. [2018-09-18 12:21:10,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 12:21:10,692 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 762 [2018-09-18 12:21:10,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:21:11,115 INFO L225 Difference]: With dead ends: 215541 [2018-09-18 12:21:11,116 INFO L226 Difference]: Without dead ends: 107157 [2018-09-18 12:21:11,436 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1531 GetRequests, 1523 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2018-09-18 12:21:11,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107157 states. [2018-09-18 12:21:13,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107157 to 107157. [2018-09-18 12:21:13,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107157 states. [2018-09-18 12:21:14,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107157 states to 107157 states and 153559 transitions. [2018-09-18 12:21:14,868 INFO L78 Accepts]: Start accepts. Automaton has 107157 states and 153559 transitions. Word has length 762 [2018-09-18 12:21:14,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:21:14,868 INFO L480 AbstractCegarLoop]: Abstraction has 107157 states and 153559 transitions. [2018-09-18 12:21:14,868 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 12:21:14,868 INFO L276 IsEmpty]: Start isEmpty. Operand 107157 states and 153559 transitions. [2018-09-18 12:21:14,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 762 [2018-09-18 12:21:14,876 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:21:14,876 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:21:14,877 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:21:14,877 INFO L82 PathProgramCache]: Analyzing trace with hash 1815146733, now seen corresponding path program 1 times [2018-09-18 12:21:14,877 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:21:14,878 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:21:14,878 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:21:14,878 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:21:14,878 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:21:14,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:21:15,380 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 12:21:16,030 INFO L134 CoverageAnalysis]: Checked inductivity of 611 backedges. 181 proven. 250 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2018-09-18 12:21:16,030 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:21:16,031 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:21:16,039 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:21:16,039 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:21:16,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:21:16,216 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:21:20,026 INFO L134 CoverageAnalysis]: Checked inductivity of 611 backedges. 189 proven. 0 refuted. 0 times theorem prover too weak. 422 trivial. 0 not checked. [2018-09-18 12:21:20,027 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:21:20,389 INFO L134 CoverageAnalysis]: Checked inductivity of 611 backedges. 189 proven. 0 refuted. 0 times theorem prover too weak. 422 trivial. 0 not checked. [2018-09-18 12:21:20,411 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-18 12:21:20,411 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 10 [2018-09-18 12:21:20,411 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:21:20,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 12:21:20,412 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 12:21:20,412 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-09-18 12:21:20,412 INFO L87 Difference]: Start difference. First operand 107157 states and 153559 transitions. Second operand 3 states. [2018-09-18 12:21:26,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:21:26,782 INFO L93 Difference]: Finished difference Result 246706 states and 353744 transitions. [2018-09-18 12:21:26,782 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 12:21:26,782 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 761 [2018-09-18 12:21:26,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:21:27,390 INFO L225 Difference]: With dead ends: 246706 [2018-09-18 12:21:27,390 INFO L226 Difference]: Without dead ends: 138894 [2018-09-18 12:21:27,756 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1532 GetRequests, 1522 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-09-18 12:21:27,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138894 states. [2018-09-18 12:21:30,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138894 to 138889. [2018-09-18 12:21:30,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138889 states. [2018-09-18 12:21:31,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138889 states to 138889 states and 192014 transitions. [2018-09-18 12:21:31,721 INFO L78 Accepts]: Start accepts. Automaton has 138889 states and 192014 transitions. Word has length 761 [2018-09-18 12:21:31,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:21:31,722 INFO L480 AbstractCegarLoop]: Abstraction has 138889 states and 192014 transitions. [2018-09-18 12:21:31,723 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 12:21:31,723 INFO L276 IsEmpty]: Start isEmpty. Operand 138889 states and 192014 transitions. [2018-09-18 12:21:31,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1268 [2018-09-18 12:21:31,861 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:21:31,862 INFO L376 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 12:21:31,862 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:21:31,863 INFO L82 PathProgramCache]: Analyzing trace with hash 203545900, now seen corresponding path program 1 times [2018-09-18 12:21:31,863 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:21:31,864 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:21:31,864 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:21:31,864 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:21:31,864 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:21:31,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:21:32,718 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 12:21:34,759 INFO L134 CoverageAnalysis]: Checked inductivity of 1700 backedges. 503 proven. 455 refuted. 0 times theorem prover too weak. 742 trivial. 0 not checked. [2018-09-18 12:21:34,759 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:21:34,759 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 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:21:34,767 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:21:34,768 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:21:35,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:21:35,070 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:21:36,414 INFO L134 CoverageAnalysis]: Checked inductivity of 1700 backedges. 1257 proven. 2 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2018-09-18 12:21:36,414 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:21:37,102 INFO L134 CoverageAnalysis]: Checked inductivity of 1700 backedges. 594 proven. 89 refuted. 0 times theorem prover too weak. 1017 trivial. 0 not checked. [2018-09-18 12:21:37,125 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:21:37,125 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 15 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 15 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 12:21:37,141 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:21:37,141 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:21:37,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:21:37,842 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:21:38,539 INFO L134 CoverageAnalysis]: Checked inductivity of 1700 backedges. 1257 proven. 2 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2018-09-18 12:21:38,539 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:21:39,346 INFO L134 CoverageAnalysis]: Checked inductivity of 1700 backedges. 594 proven. 89 refuted. 0 times theorem prover too weak. 1017 trivial. 0 not checked. [2018-09-18 12:21:39,349 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 12:21:39,350 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5, 5, 5] total 17 [2018-09-18 12:21:39,351 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 12:21:39,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-18 12:21:39,352 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-18 12:21:39,352 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2018-09-18 12:21:39,353 INFO L87 Difference]: Start difference. First operand 138889 states and 192014 transitions. Second operand 11 states. Received shutdown request... [2018-09-18 12:21:49,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-09-18 12:21:49,641 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-18 12:21:49,646 WARN L206 ceAbstractionStarter]: Timeout [2018-09-18 12:21:49,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 12:21:49 BoogieIcfgContainer [2018-09-18 12:21:49,646 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-18 12:21:49,647 INFO L168 Benchmark]: Toolchain (without parser) took 216269.88 ms. Allocated memory was 1.5 GB in the beginning and 4.9 GB in the end (delta: 3.3 GB). Free memory was 1.4 GB in the beginning and 2.5 GB in the end (delta: -1.0 GB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-09-18 12:21:49,648 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. [2018-09-18 12:21:49,649 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1749.10 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 180.0 MB). Peak memory consumption was 180.0 MB. Max. memory is 7.1 GB. [2018-09-18 12:21:49,649 INFO L168 Benchmark]: Boogie Procedure Inliner took 194.76 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-09-18 12:21:49,650 INFO L168 Benchmark]: Boogie Preprocessor took 617.98 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 870.8 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 85.6 MB. Max. memory is 7.1 GB. [2018-09-18 12:21:49,651 INFO L168 Benchmark]: RCFGBuilder took 9071.71 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.8 GB in the end (delta: 480.1 MB). Peak memory consumption was 480.1 MB. Max. memory is 7.1 GB. [2018-09-18 12:21:49,652 INFO L168 Benchmark]: TraceAbstraction took 204629.50 ms. Allocated memory was 2.4 GB in the beginning and 4.9 GB in the end (delta: 2.4 GB). Free memory was 1.8 GB in the beginning and 2.5 GB in the end (delta: -635.2 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-09-18 12:21:49,657 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 1749.10 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 180.0 MB). Peak memory consumption was 180.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 194.76 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 617.98 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 870.8 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 85.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9071.71 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.8 GB in the end (delta: 480.1 MB). Peak memory consumption was 480.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 204629.50 ms. Allocated memory was 2.4 GB in the beginning and 4.9 GB in the end (delta: 2.4 GB). Free memory was 1.8 GB in the beginning and 2.5 GB in the end (delta: -635.2 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: 192]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 192). Cancelled while BasicCegarLoop was constructing difference of abstraction (138889states) and FLOYD_HOARE automaton (currently 30 states, 11 states before enhancement), while ReachableStatesComputation was computing reachable states (30083 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 204.5s OverallTime, 13 OverallIterations, 6 TraceHistogramMax, 142.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3268 SDtfs, 38856 SDslu, 2094 SDs, 0 SdLazy, 75552 SolverSat, 16393 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 85.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17048 GetRequests, 16836 SyntacticMatches, 38 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 922 ImplicationChecksByTransitivity, 8.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=138889occurred 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: 24.8s AutomataMinimizationTime, 12 MinimizatonAttempts, 2648 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 3.2s SatisfiabilityAnalysisTime, 23.6s InterpolantComputationTime, 14834 NumberOfCodeBlocks, 14834 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 23214 ConstructedInterpolants, 0 QuantifiedInterpolants, 32461975 SizeOfPredicates, 11 NumberOfNonLiveVariables, 11818 ConjunctsInSsa, 82 ConjunctsInUnsatCore, 41 InterpolantComputations, 9 PerfectInterpolantSequences, 19750/21842 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem18_label02_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-18_12-21-49-672.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem18_label02_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-18_12-21-49-672.csv Completed graceful shutdown