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/Problem12_label53_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-18 11:35:16,659 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-18 11:35:16,662 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-18 11:35:16,680 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-18 11:35:16,680 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-18 11:35:16,681 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-18 11:35:16,682 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-18 11:35:16,686 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-18 11:35:16,688 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-18 11:35:16,690 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-18 11:35:16,691 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-18 11:35:16,691 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-18 11:35:16,692 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-18 11:35:16,693 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-18 11:35:16,694 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-18 11:35:16,695 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-18 11:35:16,696 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-18 11:35:16,698 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-18 11:35:16,700 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-18 11:35:16,701 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-18 11:35:16,702 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-18 11:35:16,704 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-18 11:35:16,706 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-18 11:35:16,706 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-18 11:35:16,707 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-18 11:35:16,708 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-18 11:35:16,709 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-18 11:35:16,709 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-18 11:35:16,710 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-18 11:35:16,711 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-18 11:35:16,712 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-18 11:35:16,712 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-18 11:35:16,713 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-18 11:35:16,713 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-18 11:35:16,714 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-18 11:35:16,715 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-18 11:35:16,715 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-18 11:35:16,732 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-18 11:35:16,732 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-18 11:35:16,733 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-18 11:35:16,733 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-18 11:35:16,733 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-18 11:35:16,733 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-18 11:35:16,734 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-18 11:35:16,734 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-18 11:35:16,734 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-18 11:35:16,734 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-18 11:35:16,734 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-18 11:35:16,735 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-18 11:35:16,735 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-18 11:35:16,736 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-18 11:35:16,736 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-18 11:35:16,736 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-18 11:35:16,736 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-18 11:35:16,736 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-18 11:35:16,737 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-18 11:35:16,737 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-18 11:35:16,737 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-18 11:35:16,737 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-18 11:35:16,737 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-18 11:35:16,738 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-18 11:35:16,738 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 11:35:16,738 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-18 11:35:16,738 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-18 11:35:16,738 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-18 11:35:16,738 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-18 11:35:16,739 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-18 11:35:16,739 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-18 11:35:16,739 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-18 11:35:16,739 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-18 11:35:16,739 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-18 11:35:16,785 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-18 11:35:16,798 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-18 11:35:16,802 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-18 11:35:16,804 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-18 11:35:16,804 INFO L276 PluginConnector]: CDTParser initialized [2018-09-18 11:35:16,805 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label53_true-unreach-call.c [2018-09-18 11:35:17,144 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b73b5a95a/045bb9aa01754abfa5ddd9b5ecc89eba/FLAG3ad13ed47 [2018-09-18 11:35:17,561 INFO L277 CDTParser]: Found 1 translation units. [2018-09-18 11:35:17,561 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label53_true-unreach-call.c [2018-09-18 11:35:17,600 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b73b5a95a/045bb9aa01754abfa5ddd9b5ecc89eba/FLAG3ad13ed47 [2018-09-18 11:35:17,621 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b73b5a95a/045bb9aa01754abfa5ddd9b5ecc89eba [2018-09-18 11:35:17,635 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-18 11:35:17,640 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-18 11:35:17,641 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-18 11:35:17,642 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-18 11:35:17,650 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-18 11:35:17,651 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 11:35:17" (1/1) ... [2018-09-18 11:35:17,655 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6936f531 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:35:17, skipping insertion in model container [2018-09-18 11:35:17,656 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 11:35:17" (1/1) ... [2018-09-18 11:35:17,669 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-18 11:35:19,067 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 11:35:19,087 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-18 11:35:19,720 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 11:35:19,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:35:19 WrapperNode [2018-09-18 11:35:19,997 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-18 11:35:19,998 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-18 11:35:19,999 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-18 11:35:19,999 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-18 11:35:20,010 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:35:19" (1/1) ... [2018-09-18 11:35:20,104 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:35:19" (1/1) ... [2018-09-18 11:35:20,249 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-18 11:35:20,250 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-18 11:35:20,250 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-18 11:35:20,250 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-18 11:35:20,850 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:35:19" (1/1) ... [2018-09-18 11:35:20,851 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:35:19" (1/1) ... [2018-09-18 11:35:20,899 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:35:19" (1/1) ... [2018-09-18 11:35:20,900 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:35:19" (1/1) ... [2018-09-18 11:35:21,013 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:35:19" (1/1) ... [2018-09-18 11:35:21,045 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:35:19" (1/1) ... [2018-09-18 11:35:21,091 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:35:19" (1/1) ... [2018-09-18 11:35:21,169 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-18 11:35:21,170 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-18 11:35:21,170 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-18 11:35:21,170 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-18 11:35:21,171 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:35:19" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 11:35:21,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-18 11:35:21,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-18 11:35:21,246 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-09-18 11:35:21,246 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-09-18 11:35:21,246 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-18 11:35:21,246 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-18 11:35:21,246 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-18 11:35:21,247 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-18 11:35:21,247 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-18 11:35:21,247 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-18 11:35:21,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-18 11:35:21,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-18 11:35:21,248 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-18 11:35:21,248 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-18 11:35:32,434 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-18 11:35:32,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 11:35:32 BoogieIcfgContainer [2018-09-18 11:35:32,435 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-18 11:35:32,436 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-18 11:35:32,436 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-18 11:35:32,440 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-18 11:35:32,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 11:35:17" (1/3) ... [2018-09-18 11:35:32,441 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@259e4685 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 11:35:32, skipping insertion in model container [2018-09-18 11:35:32,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:35:19" (2/3) ... [2018-09-18 11:35:32,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@259e4685 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 11:35:32, skipping insertion in model container [2018-09-18 11:35:32,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 11:35:32" (3/3) ... [2018-09-18 11:35:32,444 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label53_true-unreach-call.c [2018-09-18 11:35:32,455 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-18 11:35:32,468 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-18 11:35:32,539 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-18 11:35:32,540 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-18 11:35:32,540 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-18 11:35:32,541 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-18 11:35:32,541 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-18 11:35:32,541 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-18 11:35:32,541 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-18 11:35:32,541 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-18 11:35:32,542 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-18 11:35:32,586 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-09-18 11:35:32,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-09-18 11:35:32,594 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:35:32,595 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] [2018-09-18 11:35:32,596 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:35:32,601 INFO L82 PathProgramCache]: Analyzing trace with hash 761764731, now seen corresponding path program 1 times [2018-09-18 11:35:32,603 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:35:32,653 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:35:32,653 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:35:32,654 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:35:32,654 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:35:32,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:35:33,062 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 11:35:33,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:35:33,181 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:35:33,181 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-18 11:35:33,181 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:35:33,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 11:35:33,204 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 11:35:33,205 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 11:35:33,208 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-09-18 11:35:44,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:35:44,621 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-09-18 11:35:44,622 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 11:35:44,623 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2018-09-18 11:35:44,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:35:44,654 INFO L225 Difference]: With dead ends: 2446 [2018-09-18 11:35:44,654 INFO L226 Difference]: Without dead ends: 1604 [2018-09-18 11:35:44,665 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 11:35:44,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-09-18 11:35:44,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-09-18 11:35:44,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-09-18 11:35:44,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2909 transitions. [2018-09-18 11:35:44,842 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2909 transitions. Word has length 39 [2018-09-18 11:35:44,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:35:44,845 INFO L480 AbstractCegarLoop]: Abstraction has 1604 states and 2909 transitions. [2018-09-18 11:35:44,845 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 11:35:44,846 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2909 transitions. [2018-09-18 11:35:44,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-09-18 11:35:44,863 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:35:44,864 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:35:44,864 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:35:44,865 INFO L82 PathProgramCache]: Analyzing trace with hash 48271764, now seen corresponding path program 1 times [2018-09-18 11:35:44,866 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:35:44,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:35:44,867 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:35:44,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:35:44,868 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:35:44,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:35:45,288 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 11:35:45,528 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:35:45,529 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:35:45,529 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-18 11:35:45,529 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:35:45,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:35:45,534 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:35:45,534 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-18 11:35:45,535 INFO L87 Difference]: Start difference. First operand 1604 states and 2909 transitions. Second operand 5 states. [2018-09-18 11:35:56,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:35:56,999 INFO L93 Difference]: Finished difference Result 4818 states and 8826 transitions. [2018-09-18 11:35:57,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 11:35:57,006 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2018-09-18 11:35:57,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:35:57,030 INFO L225 Difference]: With dead ends: 4818 [2018-09-18 11:35:57,031 INFO L226 Difference]: Without dead ends: 3220 [2018-09-18 11:35:57,037 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-18 11:35:57,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3220 states. [2018-09-18 11:35:57,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3220 to 3186. [2018-09-18 11:35:57,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3186 states. [2018-09-18 11:35:57,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3186 states to 3186 states and 5594 transitions. [2018-09-18 11:35:57,160 INFO L78 Accepts]: Start accepts. Automaton has 3186 states and 5594 transitions. Word has length 113 [2018-09-18 11:35:57,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:35:57,161 INFO L480 AbstractCegarLoop]: Abstraction has 3186 states and 5594 transitions. [2018-09-18 11:35:57,161 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 11:35:57,161 INFO L276 IsEmpty]: Start isEmpty. Operand 3186 states and 5594 transitions. [2018-09-18 11:35:57,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-09-18 11:35:57,173 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:35:57,173 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:35:57,174 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:35:57,174 INFO L82 PathProgramCache]: Analyzing trace with hash 111124109, now seen corresponding path program 1 times [2018-09-18 11:35:57,174 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:35:57,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:35:57,176 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:35:57,176 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:35:57,176 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:35:57,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:35:57,397 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:35:57,397 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:35:57,398 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 11:35:57,398 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:35:57,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 11:35:57,398 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 11:35:57,399 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 11:35:57,399 INFO L87 Difference]: Start difference. First operand 3186 states and 5594 transitions. Second operand 6 states. [2018-09-18 11:36:09,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:36:09,059 INFO L93 Difference]: Finished difference Result 11148 states and 19850 transitions. [2018-09-18 11:36:09,060 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 11:36:09,060 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 118 [2018-09-18 11:36:09,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:36:09,108 INFO L225 Difference]: With dead ends: 11148 [2018-09-18 11:36:09,109 INFO L226 Difference]: Without dead ends: 7968 [2018-09-18 11:36:09,126 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 11:36:09,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7968 states. [2018-09-18 11:36:09,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7968 to 7924. [2018-09-18 11:36:09,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7924 states. [2018-09-18 11:36:09,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7924 states to 7924 states and 13424 transitions. [2018-09-18 11:36:09,496 INFO L78 Accepts]: Start accepts. Automaton has 7924 states and 13424 transitions. Word has length 118 [2018-09-18 11:36:09,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:36:09,496 INFO L480 AbstractCegarLoop]: Abstraction has 7924 states and 13424 transitions. [2018-09-18 11:36:09,497 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 11:36:09,497 INFO L276 IsEmpty]: Start isEmpty. Operand 7924 states and 13424 transitions. [2018-09-18 11:36:09,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-09-18 11:36:09,505 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:36:09,505 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:36:09,505 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:36:09,506 INFO L82 PathProgramCache]: Analyzing trace with hash -1028890595, now seen corresponding path program 1 times [2018-09-18 11:36:09,506 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:36:09,507 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:36:09,508 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:36:09,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:36:09,508 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:36:09,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:36:09,835 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 11:36:09,928 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:36:09,929 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:36:09,929 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 11:36:09,929 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:36:09,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 11:36:09,930 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 11:36:09,930 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 11:36:09,930 INFO L87 Difference]: Start difference. First operand 7924 states and 13424 transitions. Second operand 6 states. [2018-09-18 11:36:19,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:36:19,823 INFO L93 Difference]: Finished difference Result 22224 states and 38004 transitions. [2018-09-18 11:36:19,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 11:36:19,824 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 126 [2018-09-18 11:36:19,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:36:19,888 INFO L225 Difference]: With dead ends: 22224 [2018-09-18 11:36:19,888 INFO L226 Difference]: Without dead ends: 14306 [2018-09-18 11:36:19,927 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-18 11:36:19,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14306 states. [2018-09-18 11:36:20,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14306 to 14219. [2018-09-18 11:36:20,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14219 states. [2018-09-18 11:36:20,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14219 states to 14219 states and 21550 transitions. [2018-09-18 11:36:20,259 INFO L78 Accepts]: Start accepts. Automaton has 14219 states and 21550 transitions. Word has length 126 [2018-09-18 11:36:20,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:36:20,260 INFO L480 AbstractCegarLoop]: Abstraction has 14219 states and 21550 transitions. [2018-09-18 11:36:20,260 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 11:36:20,260 INFO L276 IsEmpty]: Start isEmpty. Operand 14219 states and 21550 transitions. [2018-09-18 11:36:20,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-09-18 11:36:20,265 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:36:20,266 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:36:20,266 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:36:20,266 INFO L82 PathProgramCache]: Analyzing trace with hash -1371846736, now seen corresponding path program 1 times [2018-09-18 11:36:20,266 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:36:20,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:36:20,267 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:36:20,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:36:20,268 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:36:20,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:36:20,602 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:36:20,602 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:36:20,602 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 11:36:20,603 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:36:20,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 11:36:20,603 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 11:36:20,603 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-18 11:36:20,604 INFO L87 Difference]: Start difference. First operand 14219 states and 21550 transitions. Second operand 6 states. [2018-09-18 11:36:43,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:36:43,524 INFO L93 Difference]: Finished difference Result 56456 states and 95976 transitions. [2018-09-18 11:36:43,525 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-18 11:36:43,525 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 143 [2018-09-18 11:36:43,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:36:43,763 INFO L225 Difference]: With dead ends: 56456 [2018-09-18 11:36:43,764 INFO L226 Difference]: Without dead ends: 42243 [2018-09-18 11:36:43,883 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 11:36:43,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42243 states. [2018-09-18 11:36:44,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42243 to 42003. [2018-09-18 11:36:44,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42003 states. [2018-09-18 11:36:44,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42003 states to 42003 states and 62980 transitions. [2018-09-18 11:36:44,995 INFO L78 Accepts]: Start accepts. Automaton has 42003 states and 62980 transitions. Word has length 143 [2018-09-18 11:36:44,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:36:44,995 INFO L480 AbstractCegarLoop]: Abstraction has 42003 states and 62980 transitions. [2018-09-18 11:36:44,995 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 11:36:44,995 INFO L276 IsEmpty]: Start isEmpty. Operand 42003 states and 62980 transitions. [2018-09-18 11:36:45,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-09-18 11:36:45,002 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:36:45,002 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:36:45,003 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:36:45,003 INFO L82 PathProgramCache]: Analyzing trace with hash 1505829769, now seen corresponding path program 1 times [2018-09-18 11:36:45,003 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:36:45,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:36:45,004 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:36:45,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:36:45,007 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:36:45,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:36:45,309 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 11:36:45,723 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:36:45,724 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:36:45,724 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 11:36:45,724 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:36:45,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 11:36:45,725 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 11:36:45,725 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 11:36:45,725 INFO L87 Difference]: Start difference. First operand 42003 states and 62980 transitions. Second operand 6 states. [2018-09-18 11:36:56,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:36:56,539 INFO L93 Difference]: Finished difference Result 104625 states and 165914 transitions. [2018-09-18 11:36:56,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 11:36:56,540 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 164 [2018-09-18 11:36:56,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:36:56,770 INFO L225 Difference]: With dead ends: 104625 [2018-09-18 11:36:56,770 INFO L226 Difference]: Without dead ends: 62628 [2018-09-18 11:36:56,915 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-18 11:36:56,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62628 states. [2018-09-18 11:36:58,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62628 to 62378. [2018-09-18 11:36:58,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62378 states. [2018-09-18 11:36:58,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62378 states to 62378 states and 87792 transitions. [2018-09-18 11:36:58,614 INFO L78 Accepts]: Start accepts. Automaton has 62378 states and 87792 transitions. Word has length 164 [2018-09-18 11:36:58,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:36:58,615 INFO L480 AbstractCegarLoop]: Abstraction has 62378 states and 87792 transitions. [2018-09-18 11:36:58,615 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 11:36:58,615 INFO L276 IsEmpty]: Start isEmpty. Operand 62378 states and 87792 transitions. [2018-09-18 11:36:58,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-09-18 11:36:58,625 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:36:58,626 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 11:36:58,626 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:36:58,626 INFO L82 PathProgramCache]: Analyzing trace with hash -1882341016, now seen corresponding path program 1 times [2018-09-18 11:36:58,627 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:36:58,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:36:58,628 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:36:58,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:36:58,628 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:36:58,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:36:58,997 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 64 proven. 74 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 11:36:58,998 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:36:58,998 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:36:59,017 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:36:59,018 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:36:59,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:36:59,129 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:36:59,345 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2018-09-18 11:36:59,345 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:36:59,731 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 64 proven. 74 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 11:36:59,766 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 11:36:59,766 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 10 [2018-09-18 11:36:59,767 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:36:59,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:36:59,768 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:36:59,768 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-09-18 11:36:59,768 INFO L87 Difference]: Start difference. First operand 62378 states and 87792 transitions. Second operand 5 states. [2018-09-18 11:37:12,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:37:12,746 INFO L93 Difference]: Finished difference Result 181168 states and 270846 transitions. [2018-09-18 11:37:12,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-18 11:37:12,747 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 198 [2018-09-18 11:37:12,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:37:13,568 INFO L225 Difference]: With dead ends: 181168 [2018-09-18 11:37:13,568 INFO L226 Difference]: Without dead ends: 118796 [2018-09-18 11:37:13,787 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 393 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2018-09-18 11:37:13,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118796 states. [2018-09-18 11:37:16,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118796 to 116031. [2018-09-18 11:37:16,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116031 states. [2018-09-18 11:37:18,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116031 states to 116031 states and 160996 transitions. [2018-09-18 11:37:18,041 INFO L78 Accepts]: Start accepts. Automaton has 116031 states and 160996 transitions. Word has length 198 [2018-09-18 11:37:18,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:37:18,041 INFO L480 AbstractCegarLoop]: Abstraction has 116031 states and 160996 transitions. [2018-09-18 11:37:18,041 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 11:37:18,041 INFO L276 IsEmpty]: Start isEmpty. Operand 116031 states and 160996 transitions. [2018-09-18 11:37:18,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-09-18 11:37:18,051 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:37:18,052 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 11:37:18,052 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:37:18,052 INFO L82 PathProgramCache]: Analyzing trace with hash -532309396, now seen corresponding path program 1 times [2018-09-18 11:37:18,053 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:37:18,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:37:18,054 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:37:18,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:37:18,054 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:37:18,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:37:18,604 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 138 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:37:18,605 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:37:18,605 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 11:37:18,621 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:37:18,622 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:37:18,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:37:18,729 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:37:19,194 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 138 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:37:19,194 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:37:19,961 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 138 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:37:19,982 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:37:19,983 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 11:37:19,999 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:37:19,999 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:37:20,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:37:20,174 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:37:20,296 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 138 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:37:20,297 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:37:20,578 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 138 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:37:20,581 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:37:20,582 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-09-18 11:37:20,582 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:37:20,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 11:37:20,583 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 11:37:20,583 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-18 11:37:20,584 INFO L87 Difference]: Start difference. First operand 116031 states and 160996 transitions. Second operand 9 states. [2018-09-18 11:37:39,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:37:39,951 INFO L93 Difference]: Finished difference Result 265840 states and 448373 transitions. [2018-09-18 11:37:39,952 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-09-18 11:37:39,952 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 240 [2018-09-18 11:37:39,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:37:40,754 INFO L225 Difference]: With dead ends: 265840 [2018-09-18 11:37:40,754 INFO L226 Difference]: Without dead ends: 127445 [2018-09-18 11:37:41,006 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 985 GetRequests, 960 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2018-09-18 11:37:41,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127445 states. [2018-09-18 11:37:45,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127445 to 125315. [2018-09-18 11:37:45,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125315 states. [2018-09-18 11:37:46,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125315 states to 125315 states and 189906 transitions. [2018-09-18 11:37:46,183 INFO L78 Accepts]: Start accepts. Automaton has 125315 states and 189906 transitions. Word has length 240 [2018-09-18 11:37:46,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:37:46,183 INFO L480 AbstractCegarLoop]: Abstraction has 125315 states and 189906 transitions. [2018-09-18 11:37:46,183 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 11:37:46,183 INFO L276 IsEmpty]: Start isEmpty. Operand 125315 states and 189906 transitions. [2018-09-18 11:37:46,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2018-09-18 11:37:46,198 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:37:46,198 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 11:37:46,198 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:37:46,199 INFO L82 PathProgramCache]: Analyzing trace with hash -142464719, now seen corresponding path program 1 times [2018-09-18 11:37:46,199 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:37:46,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:37:46,200 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:37:46,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:37:46,200 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:37:46,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:37:46,704 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 178 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:37:46,705 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:37:46,705 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:37:46,713 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:37:46,713 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:37:46,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:37:46,801 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:37:47,037 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 178 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:37:47,037 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:37:47,218 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 178 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:37:47,240 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:37:47,240 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:37:47,256 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:37:47,257 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:37:47,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:37:47,460 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:37:47,518 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 178 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:37:47,518 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:37:47,648 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 178 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:37:47,650 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:37:47,650 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-09-18 11:37:47,651 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:37:47,652 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 11:37:47,652 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 11:37:47,652 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-18 11:37:47,652 INFO L87 Difference]: Start difference. First operand 125315 states and 189906 transitions. Second operand 9 states. [2018-09-18 11:38:11,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:38:11,555 INFO L93 Difference]: Finished difference Result 307641 states and 637411 transitions. [2018-09-18 11:38:11,561 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-18 11:38:11,561 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 301 [2018-09-18 11:38:11,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:38:18,954 INFO L225 Difference]: With dead ends: 307641 [2018-09-18 11:38:18,955 INFO L226 Difference]: Without dead ends: 182337 [2018-09-18 11:38:19,365 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1220 GetRequests, 1199 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=102, Invalid=204, Unknown=0, NotChecked=0, Total=306 [2018-09-18 11:38:19,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182337 states. [2018-09-18 11:38:23,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182337 to 179649. [2018-09-18 11:38:23,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179649 states. [2018-09-18 11:38:25,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179649 states to 179649 states and 335292 transitions. [2018-09-18 11:38:25,831 INFO L78 Accepts]: Start accepts. Automaton has 179649 states and 335292 transitions. Word has length 301 [2018-09-18 11:38:25,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:38:25,832 INFO L480 AbstractCegarLoop]: Abstraction has 179649 states and 335292 transitions. [2018-09-18 11:38:25,832 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 11:38:25,833 INFO L276 IsEmpty]: Start isEmpty. Operand 179649 states and 335292 transitions. [2018-09-18 11:38:25,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2018-09-18 11:38:25,867 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:38:25,867 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:38:25,868 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:38:25,868 INFO L82 PathProgramCache]: Analyzing trace with hash -2021352135, now seen corresponding path program 1 times [2018-09-18 11:38:25,868 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:38:25,869 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:38:25,869 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:38:25,869 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:38:25,869 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:38:25,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:38:26,200 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 11:38:26,693 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 102 proven. 143 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-09-18 11:38:26,694 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:38:26,694 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:38:26,702 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:38:26,702 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:38:26,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:38:26,807 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:38:26,913 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 284 proven. 2 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2018-09-18 11:38:26,913 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:38:27,050 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 178 proven. 71 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-09-18 11:38:27,072 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:38:27,072 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:38:27,088 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:38:27,088 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:38:27,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:38:27,317 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:38:27,733 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 210 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-09-18 11:38:27,733 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:38:28,109 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 104 proven. 134 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-09-18 11:38:28,112 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2018-09-18 11:38:28,112 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5, 5, 5] total 13 [2018-09-18 11:38:28,112 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:38:28,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:38:28,114 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:38:28,114 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-09-18 11:38:28,114 INFO L87 Difference]: Start difference. First operand 179649 states and 335292 transitions. Second operand 5 states. [2018-09-18 11:38:41,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:38:41,526 INFO L93 Difference]: Finished difference Result 364565 states and 747442 transitions. [2018-09-18 11:38:41,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-18 11:38:41,526 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 336 [2018-09-18 11:38:41,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:38:42,492 INFO L225 Difference]: With dead ends: 364565 [2018-09-18 11:38:42,492 INFO L226 Difference]: Without dead ends: 184962 [2018-09-18 11:38:44,103 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1352 GetRequests, 1331 SyntacticMatches, 9 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2018-09-18 11:38:44,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184962 states. [2018-09-18 11:38:47,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184962 to 184560. [2018-09-18 11:38:47,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184560 states. [2018-09-18 11:38:50,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184560 states to 184560 states and 308799 transitions. [2018-09-18 11:38:50,061 INFO L78 Accepts]: Start accepts. Automaton has 184560 states and 308799 transitions. Word has length 336 [2018-09-18 11:38:50,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:38:50,062 INFO L480 AbstractCegarLoop]: Abstraction has 184560 states and 308799 transitions. [2018-09-18 11:38:50,062 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 11:38:50,062 INFO L276 IsEmpty]: Start isEmpty. Operand 184560 states and 308799 transitions. [2018-09-18 11:38:50,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2018-09-18 11:38:50,085 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:38:50,085 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:38:50,086 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:38:50,086 INFO L82 PathProgramCache]: Analyzing trace with hash 525388263, now seen corresponding path program 1 times [2018-09-18 11:38:50,086 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:38:50,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:38:50,087 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:38:50,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:38:50,087 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:38:50,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:38:50,492 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 211 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:38:50,493 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:38:50,493 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:38:50,503 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:38:50,504 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:38:50,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:38:50,608 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:38:50,721 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 211 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:38:50,721 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:38:50,907 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 211 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:38:50,928 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:38:50,929 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:38:50,944 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:38:50,944 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:38:51,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:38:51,171 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:38:51,283 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 211 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:38:51,283 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:38:51,468 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 211 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:38:51,470 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:38:51,471 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 16 [2018-09-18 11:38:51,471 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:38:51,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 11:38:51,472 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 11:38:51,473 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2018-09-18 11:38:51,473 INFO L87 Difference]: Start difference. First operand 184560 states and 308799 transitions. Second operand 9 states. Received shutdown request... [2018-09-18 11:38:58,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-18 11:38:58,234 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-18 11:38:58,241 WARN L206 ceAbstractionStarter]: Timeout [2018-09-18 11:38:58,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 11:38:58 BoogieIcfgContainer [2018-09-18 11:38:58,241 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-18 11:38:58,242 INFO L168 Benchmark]: Toolchain (without parser) took 220606.88 ms. Allocated memory was 1.5 GB in the beginning and 5.2 GB in the end (delta: 3.7 GB). Free memory was 1.4 GB in the beginning and 4.5 GB in the end (delta: -3.1 GB). Peak memory consumption was 588.6 MB. Max. memory is 7.1 GB. [2018-09-18 11:38:58,244 INFO L168 Benchmark]: CDTParser took 0.19 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 11:38:58,244 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2356.42 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: 243.1 MB). Peak memory consumption was 243.1 MB. Max. memory is 7.1 GB. [2018-09-18 11:38:58,245 INFO L168 Benchmark]: Boogie Procedure Inliner took 250.85 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-09-18 11:38:58,246 INFO L168 Benchmark]: Boogie Preprocessor took 919.87 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 911.2 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 127.8 MB. Max. memory is 7.1 GB. [2018-09-18 11:38:58,247 INFO L168 Benchmark]: RCFGBuilder took 11265.69 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.6 GB in the end (delta: 660.4 MB). Peak memory consumption was 660.4 MB. Max. memory is 7.1 GB. [2018-09-18 11:38:58,247 INFO L168 Benchmark]: TraceAbstraction took 205805.25 ms. Allocated memory was 2.4 GB in the beginning and 5.2 GB in the end (delta: 2.8 GB). Free memory was 1.6 GB in the beginning and 4.5 GB in the end (delta: -2.8 GB). There was no memory consumed. Max. memory is 7.1 GB. [2018-09-18 11:38:58,253 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 2356.42 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: 243.1 MB). Peak memory consumption was 243.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 250.85 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 919.87 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 911.2 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 127.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11265.69 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.6 GB in the end (delta: 660.4 MB). Peak memory consumption was 660.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 205805.25 ms. Allocated memory was 2.4 GB in the beginning and 5.2 GB in the end (delta: 2.8 GB). Free memory was 1.6 GB in the beginning and 4.5 GB in the end (delta: -2.8 GB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 108]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 108). Cancelled while BasicCegarLoop was constructing difference of abstraction (184560states) and FLOYD_HOARE automaton (currently 12 states, 9 states before enhancement), while ReachableStatesComputation was computing reachable states (20723 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 205.7s OverallTime, 11 OverallIterations, 4 TraceHistogramMax, 168.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1585 SDtfs, 38497 SDslu, 2105 SDs, 0 SdLazy, 70859 SolverSat, 15135 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 112.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5401 GetRequests, 5262 SyntacticMatches, 25 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 5.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=184560occurred in iteration=10, 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: 25.6s AutomataMinimizationTime, 10 MinimizatonAttempts, 8640 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 9.1s InterpolantComputationTime, 4759 NumberOfCodeBlocks, 4759 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 7368 ConstructedInterpolants, 0 QuantifiedInterpolants, 6358318 SizeOfPredicates, 5 NumberOfNonLiveVariables, 4633 ConjunctsInSsa, 62 ConjunctsInUnsatCore, 29 InterpolantComputations, 8 PerfectInterpolantSequences, 4321/4849 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/Problem12_label53_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-18_11-38-58-267.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem12_label53_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-18_11-38-58-267.csv Completed graceful shutdown