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 -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label17_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 09:35:16,563 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 09:35:16,565 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 09:35:16,581 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 09:35:16,581 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 09:35:16,583 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 09:35:16,584 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 09:35:16,587 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 09:35:16,590 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 09:35:16,590 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 09:35:16,598 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 09:35:16,598 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 09:35:16,599 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 09:35:16,600 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 09:35:16,601 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 09:35:16,602 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 09:35:16,602 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 09:35:16,604 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 09:35:16,606 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 09:35:16,607 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 09:35:16,609 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 09:35:16,610 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 09:35:16,615 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 09:35:16,615 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 09:35:16,616 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 09:35:16,617 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 09:35:16,618 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 09:35:16,618 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 09:35:16,623 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 09:35:16,624 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 09:35:16,625 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 09:35:16,625 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 09:35:16,625 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 09:35:16,627 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 09:35:16,628 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 09:35:16,628 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 09:35:16,629 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-11-07 09:35:16,655 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 09:35:16,655 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 09:35:16,657 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 09:35:16,657 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 09:35:16,657 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 09:35:16,658 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 09:35:16,658 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 09:35:16,659 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 09:35:16,659 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 09:35:16,659 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 09:35:16,659 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 09:35:16,659 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 09:35:16,659 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 09:35:16,660 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 09:35:16,660 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 09:35:16,661 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 09:35:16,662 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 09:35:16,662 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 09:35:16,662 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 09:35:16,662 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 09:35:16,663 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 09:35:16,663 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 09:35:16,663 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 09:35:16,663 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 09:35:16,663 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 09:35:16,663 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 09:35:16,664 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 09:35:16,664 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 09:35:16,664 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 09:35:16,664 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 09:35:16,665 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 09:35:16,665 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 09:35:16,665 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 09:35:16,665 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 09:35:16,665 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 09:35:16,666 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 09:35:16,727 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 09:35:16,743 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 09:35:16,747 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 09:35:16,749 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 09:35:16,749 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 09:35:16,751 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label17_true-unreach-call.c [2018-11-07 09:35:16,819 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/421a32e22/aef8707de83e4c78a9ce63b07201ac87/FLAG31d4d451b [2018-11-07 09:35:17,643 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 09:35:17,644 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label17_true-unreach-call.c [2018-11-07 09:35:17,669 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/421a32e22/aef8707de83e4c78a9ce63b07201ac87/FLAG31d4d451b [2018-11-07 09:35:17,685 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/421a32e22/aef8707de83e4c78a9ce63b07201ac87 [2018-11-07 09:35:17,697 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 09:35:17,699 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 09:35:17,700 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 09:35:17,700 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 09:35:17,705 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 09:35:17,706 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:35:17" (1/1) ... [2018-11-07 09:35:17,709 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@673adebe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:35:17, skipping insertion in model container [2018-11-07 09:35:17,709 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:35:17" (1/1) ... [2018-11-07 09:35:17,721 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 09:35:17,847 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 09:35:18,929 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 09:35:18,934 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 09:35:19,386 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 09:35:19,417 INFO L193 MainTranslator]: Completed translation [2018-11-07 09:35:19,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:35:19 WrapperNode [2018-11-07 09:35:19,418 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 09:35:19,419 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 09:35:19,419 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 09:35:19,419 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 09:35:19,430 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:35:19" (1/1) ... [2018-11-07 09:35:19,716 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:35:19" (1/1) ... [2018-11-07 09:35:19,727 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 09:35:19,728 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 09:35:19,728 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 09:35:19,728 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 09:35:19,741 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:35:19" (1/1) ... [2018-11-07 09:35:19,741 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:35:19" (1/1) ... [2018-11-07 09:35:19,755 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:35:19" (1/1) ... [2018-11-07 09:35:19,755 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:35:19" (1/1) ... [2018-11-07 09:35:19,875 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:35:19" (1/1) ... [2018-11-07 09:35:19,918 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:35:19" (1/1) ... [2018-11-07 09:35:19,952 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:35:19" (1/1) ... [2018-11-07 09:35:19,983 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 09:35:19,983 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 09:35:19,984 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 09:35:19,985 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 09:35:19,986 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:35:19" (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 [2018-11-07 09:35:20,057 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 09:35:20,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 09:35:20,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 09:35:20,058 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 09:35:20,058 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 09:35:20,058 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 09:35:20,059 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 09:35:20,059 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 09:35:20,059 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 09:35:20,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 09:35:20,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 09:35:20,061 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 09:35:20,061 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 09:35:28,401 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 09:35:28,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:35:28 BoogieIcfgContainer [2018-11-07 09:35:28,402 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 09:35:28,404 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 09:35:28,404 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 09:35:28,408 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 09:35:28,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 09:35:17" (1/3) ... [2018-11-07 09:35:28,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64035261 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:35:28, skipping insertion in model container [2018-11-07 09:35:28,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:35:19" (2/3) ... [2018-11-07 09:35:28,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64035261 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:35:28, skipping insertion in model container [2018-11-07 09:35:28,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:35:28" (3/3) ... [2018-11-07 09:35:28,412 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label17_true-unreach-call.c [2018-11-07 09:35:28,423 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 09:35:28,435 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 09:35:28,454 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 09:35:28,502 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 09:35:28,502 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 09:35:28,502 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 09:35:28,502 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 09:35:28,502 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 09:35:28,503 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 09:35:28,503 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 09:35:28,503 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 09:35:28,546 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-11-07 09:35:28,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-11-07 09:35:28,556 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:35:28,558 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:35:28,560 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:35:28,566 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:35:28,567 INFO L82 PathProgramCache]: Analyzing trace with hash 1618771172, now seen corresponding path program 1 times [2018-11-07 09:35:28,569 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:35:28,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:35:28,617 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:35:28,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:35:28,617 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:35:28,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:35:28,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:35:28,976 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:35:28,976 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 09:35:28,977 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:35:28,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 09:35:29,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 09:35:29,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:35:29,005 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 4 states. [2018-11-07 09:35:41,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:35:41,805 INFO L93 Difference]: Finished difference Result 2974 states and 5747 transitions. [2018-11-07 09:35:41,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 09:35:41,807 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2018-11-07 09:35:41,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:35:41,858 INFO L225 Difference]: With dead ends: 2974 [2018-11-07 09:35:41,858 INFO L226 Difference]: Without dead ends: 2193 [2018-11-07 09:35:41,876 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:35:41,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2193 states. [2018-11-07 09:35:42,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2193 to 2193. [2018-11-07 09:35:42,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2193 states. [2018-11-07 09:35:42,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2193 states to 2193 states and 3677 transitions. [2018-11-07 09:35:42,116 INFO L78 Accepts]: Start accepts. Automaton has 2193 states and 3677 transitions. Word has length 38 [2018-11-07 09:35:42,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:35:42,117 INFO L480 AbstractCegarLoop]: Abstraction has 2193 states and 3677 transitions. [2018-11-07 09:35:42,117 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 09:35:42,117 INFO L276 IsEmpty]: Start isEmpty. Operand 2193 states and 3677 transitions. [2018-11-07 09:35:42,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-11-07 09:35:42,124 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:35:42,124 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:35:42,124 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:35:42,125 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:35:42,125 INFO L82 PathProgramCache]: Analyzing trace with hash -1723944686, now seen corresponding path program 1 times [2018-11-07 09:35:42,125 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:35:42,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:35:42,127 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:35:42,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:35:42,127 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:35:42,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:35:42,413 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:35:42,413 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:35:42,414 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 09:35:42,414 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:35:42,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 09:35:42,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 09:35:42,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 09:35:42,417 INFO L87 Difference]: Start difference. First operand 2193 states and 3677 transitions. Second operand 5 states. [2018-11-07 09:35:53,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:35:53,051 INFO L93 Difference]: Finished difference Result 6600 states and 11248 transitions. [2018-11-07 09:35:53,055 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 09:35:53,055 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2018-11-07 09:35:53,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:35:53,092 INFO L225 Difference]: With dead ends: 6600 [2018-11-07 09:35:53,092 INFO L226 Difference]: Without dead ends: 4413 [2018-11-07 09:35:53,101 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 09:35:53,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4413 states. [2018-11-07 09:35:53,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4413 to 4378. [2018-11-07 09:35:53,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4378 states. [2018-11-07 09:35:53,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4378 states to 4378 states and 6986 transitions. [2018-11-07 09:35:53,259 INFO L78 Accepts]: Start accepts. Automaton has 4378 states and 6986 transitions. Word has length 108 [2018-11-07 09:35:53,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:35:53,260 INFO L480 AbstractCegarLoop]: Abstraction has 4378 states and 6986 transitions. [2018-11-07 09:35:53,260 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 09:35:53,260 INFO L276 IsEmpty]: Start isEmpty. Operand 4378 states and 6986 transitions. [2018-11-07 09:35:53,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-11-07 09:35:53,274 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:35:53,274 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:35:53,274 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:35:53,275 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:35:53,278 INFO L82 PathProgramCache]: Analyzing trace with hash 455681307, now seen corresponding path program 1 times [2018-11-07 09:35:53,279 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:35:53,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:35:53,280 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:35:53,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:35:53,280 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:35:53,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:35:53,765 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:35:53,765 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:35:53,765 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 09:35:53,766 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:35:53,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:35:53,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:35:53,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:35:53,767 INFO L87 Difference]: Start difference. First operand 4378 states and 6986 transitions. Second operand 6 states. [2018-11-07 09:35:59,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:35:59,207 INFO L93 Difference]: Finished difference Result 11002 states and 17598 transitions. [2018-11-07 09:35:59,210 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 09:35:59,210 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 135 [2018-11-07 09:35:59,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:35:59,249 INFO L225 Difference]: With dead ends: 11002 [2018-11-07 09:35:59,249 INFO L226 Difference]: Without dead ends: 6630 [2018-11-07 09:35:59,264 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 09:35:59,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6630 states. [2018-11-07 09:35:59,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6630 to 6590. [2018-11-07 09:35:59,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6590 states. [2018-11-07 09:35:59,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6590 states to 6590 states and 9022 transitions. [2018-11-07 09:35:59,439 INFO L78 Accepts]: Start accepts. Automaton has 6590 states and 9022 transitions. Word has length 135 [2018-11-07 09:35:59,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:35:59,440 INFO L480 AbstractCegarLoop]: Abstraction has 6590 states and 9022 transitions. [2018-11-07 09:35:59,440 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:35:59,440 INFO L276 IsEmpty]: Start isEmpty. Operand 6590 states and 9022 transitions. [2018-11-07 09:35:59,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2018-11-07 09:35:59,447 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:35:59,449 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:35:59,449 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:35:59,449 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:35:59,449 INFO L82 PathProgramCache]: Analyzing trace with hash 1233353173, now seen corresponding path program 1 times [2018-11-07 09:35:59,450 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:35:59,451 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:35:59,451 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:35:59,451 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:35:59,451 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:35:59,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:35:59,726 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-11-07 09:35:59,727 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:35:59,727 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 09:35:59,727 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:35:59,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 09:35:59,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 09:35:59,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:35:59,730 INFO L87 Difference]: Start difference. First operand 6590 states and 9022 transitions. Second operand 4 states. [2018-11-07 09:36:06,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:36:06,766 INFO L93 Difference]: Finished difference Result 26041 states and 36985 transitions. [2018-11-07 09:36:06,766 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 09:36:06,767 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 215 [2018-11-07 09:36:06,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:36:06,846 INFO L225 Difference]: With dead ends: 26041 [2018-11-07 09:36:06,846 INFO L226 Difference]: Without dead ends: 19457 [2018-11-07 09:36:06,887 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 [2018-11-07 09:36:06,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19457 states. [2018-11-07 09:36:07,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19457 to 19457. [2018-11-07 09:36:07,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19457 states. [2018-11-07 09:36:07,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19457 states to 19457 states and 26052 transitions. [2018-11-07 09:36:07,353 INFO L78 Accepts]: Start accepts. Automaton has 19457 states and 26052 transitions. Word has length 215 [2018-11-07 09:36:07,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:36:07,354 INFO L480 AbstractCegarLoop]: Abstraction has 19457 states and 26052 transitions. [2018-11-07 09:36:07,354 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 09:36:07,354 INFO L276 IsEmpty]: Start isEmpty. Operand 19457 states and 26052 transitions. [2018-11-07 09:36:07,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2018-11-07 09:36:07,366 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:36:07,366 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:36:07,366 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:36:07,367 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:36:07,367 INFO L82 PathProgramCache]: Analyzing trace with hash 1408112993, now seen corresponding path program 1 times [2018-11-07 09:36:07,367 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:36:07,368 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:36:07,368 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:36:07,368 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:36:07,368 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:36:07,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:36:07,969 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 167 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:36:07,969 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:36:07,970 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:36:07,971 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 258 with the following transitions: [2018-11-07 09:36:07,980 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1827], [1829], [1832], [1840], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2264], [2265], [2269], [2273], [2277], [2281], [2284], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-07 09:36:08,031 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:36:08,032 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:36:08,575 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 09:36:08,578 INFO L272 AbstractInterpreter]: Visited 117 different actions 117 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 09:36:08,620 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:36:08,620 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 09:36:09,195 INFO L227 lantSequenceWeakener]: Weakened 248 states. On average, predicates are now at 77.67% of their original sizes. [2018-11-07 09:36:09,195 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 09:36:09,270 INFO L415 sIntCurrentIteration]: We unified 256 AI predicates to 256 [2018-11-07 09:36:09,271 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 09:36:09,272 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:36:09,272 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-11-07 09:36:09,272 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:36:09,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:36:09,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:36:09,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:36:09,274 INFO L87 Difference]: Start difference. First operand 19457 states and 26052 transitions. Second operand 6 states. [2018-11-07 09:38:06,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:38:06,832 INFO L93 Difference]: Finished difference Result 39613 states and 52878 transitions. [2018-11-07 09:38:06,832 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 09:38:06,832 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 257 [2018-11-07 09:38:06,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:38:06,897 INFO L225 Difference]: With dead ends: 39613 [2018-11-07 09:38:06,897 INFO L226 Difference]: Without dead ends: 20162 [2018-11-07 09:38:06,958 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 257 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-07 09:38:06,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20162 states. [2018-11-07 09:38:07,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20162 to 20160. [2018-11-07 09:38:07,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20160 states. [2018-11-07 09:38:07,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20160 states to 20160 states and 26767 transitions. [2018-11-07 09:38:07,402 INFO L78 Accepts]: Start accepts. Automaton has 20160 states and 26767 transitions. Word has length 257 [2018-11-07 09:38:07,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:38:07,403 INFO L480 AbstractCegarLoop]: Abstraction has 20160 states and 26767 transitions. [2018-11-07 09:38:07,403 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:38:07,403 INFO L276 IsEmpty]: Start isEmpty. Operand 20160 states and 26767 transitions. [2018-11-07 09:38:07,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2018-11-07 09:38:07,419 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:38:07,420 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 09:38:07,420 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:38:07,420 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:38:07,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1937675806, now seen corresponding path program 1 times [2018-11-07 09:38:07,421 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:38:07,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:38:07,422 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:38:07,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:38:07,423 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:38:07,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:38:07,987 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 09:38:08,167 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 09:38:08,397 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 09:38:08,852 WARN L179 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-11-07 09:38:09,478 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 152 proven. 262 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 09:38:09,478 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:38:09,479 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:38:09,479 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 445 with the following transitions: [2018-11-07 09:38:09,480 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1827], [1829], [1832], [1840], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2264], [2265], [2269], [2273], [2277], [2281], [2284], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2584], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-07 09:38:09,487 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:38:09,488 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:38:09,732 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 09:38:09,733 INFO L272 AbstractInterpreter]: Visited 196 different actions 385 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 09:38:09,771 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:38:09,772 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 09:38:10,200 INFO L227 lantSequenceWeakener]: Weakened 441 states. On average, predicates are now at 77.56% of their original sizes. [2018-11-07 09:38:10,201 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 09:38:10,637 INFO L415 sIntCurrentIteration]: We unified 443 AI predicates to 443 [2018-11-07 09:38:10,637 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 09:38:10,637 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:38:10,637 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2018-11-07 09:38:10,638 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:38:10,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 09:38:10,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 09:38:10,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-11-07 09:38:10,639 INFO L87 Difference]: Start difference. First operand 20160 states and 26767 transitions. Second operand 10 states. Received shutdown request... [2018-11-07 09:39:08,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-07 09:39:08,523 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 09:39:08,528 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 09:39:08,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 09:39:08 BoogieIcfgContainer [2018-11-07 09:39:08,528 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 09:39:08,530 INFO L168 Benchmark]: Toolchain (without parser) took 230831.77 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -242.1 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-11-07 09:39:08,531 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 09:39:08,532 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1718.46 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: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-11-07 09:39:08,533 INFO L168 Benchmark]: Boogie Procedure Inliner took 308.79 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 710.9 MB). Free memory was 1.2 GB in the beginning and 2.1 GB in the end (delta: -909.2 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB. [2018-11-07 09:39:08,534 INFO L168 Benchmark]: Boogie Preprocessor took 255.10 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 14.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 7.1 GB. [2018-11-07 09:39:08,535 INFO L168 Benchmark]: RCFGBuilder took 8418.93 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 528.8 MB). Peak memory consumption was 528.8 MB. Max. memory is 7.1 GB. [2018-11-07 09:39:08,536 INFO L168 Benchmark]: TraceAbstraction took 220124.31 ms. Allocated memory was 2.2 GB in the beginning and 4.0 GB in the end (delta: 1.8 GB). Free memory was 1.6 GB in the beginning and 1.6 GB in the end (delta: -24.4 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-11-07 09:39:08,541 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1718.46 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: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 308.79 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 710.9 MB). Free memory was 1.2 GB in the beginning and 2.1 GB in the end (delta: -909.2 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 255.10 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 14.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8418.93 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 528.8 MB). Peak memory consumption was 528.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 220124.31 ms. Allocated memory was 2.2 GB in the beginning and 4.0 GB in the end (delta: 1.8 GB). Free memory was 1.6 GB in the beginning and 1.6 GB in the end (delta: -24.4 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: 102]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 102). Cancelled while BasicCegarLoop was constructing difference of abstraction (20160states) and FLOYD_HOARE automaton (currently 16 states, 10 states before enhancement),while ReachableStatesComputation was computing reachable states (37221 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 220.0s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 211.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2349 SDtfs, 13227 SDslu, 1124 SDs, 0 SdLazy, 23314 SolverSat, 5289 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 164.8s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 739 GetRequests, 698 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20160occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.9s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9977620418187689 AbsIntWeakeningRatio, 0.08297567954220315 AbsIntAvgWeakeningVarsNumRemoved, 16.444921316165953 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 77 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 1197 NumberOfCodeBlocks, 1197 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1191 ConstructedInterpolants, 0 QuantifiedInterpolants, 1981267 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 518/782 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown