java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label21_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 14:35:06,649 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 14:35:06,651 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 14:35:06,664 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 14:35:06,664 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 14:35:06,665 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 14:35:06,667 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 14:35:06,668 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 14:35:06,671 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 14:35:06,672 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 14:35:06,672 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 14:35:06,674 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 14:35:06,675 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 14:35:06,678 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 14:35:06,679 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 14:35:06,679 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 14:35:06,680 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 14:35:06,682 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 14:35:06,684 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 14:35:06,685 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 14:35:06,687 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 14:35:06,688 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 14:35:06,690 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 14:35:06,691 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 14:35:06,691 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 14:35:06,692 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 14:35:06,693 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 14:35:06,693 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 14:35:06,694 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 14:35:06,695 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 14:35:06,695 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 14:35:06,696 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 14:35:06,696 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 14:35:06,697 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 14:35:06,697 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 14:35:06,698 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 14:35:06,699 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-10-27 14:35:06,714 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 14:35:06,714 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 14:35:06,715 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 14:35:06,715 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 14:35:06,716 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 14:35:06,716 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 14:35:06,716 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 14:35:06,716 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 14:35:06,716 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 14:35:06,716 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 14:35:06,717 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 14:35:06,717 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 14:35:06,717 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 14:35:06,718 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 14:35:06,718 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 14:35:06,718 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 14:35:06,718 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 14:35:06,718 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 14:35:06,719 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 14:35:06,719 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 14:35:06,719 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 14:35:06,719 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 14:35:06,719 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 14:35:06,720 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 14:35:06,720 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 14:35:06,720 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 14:35:06,720 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 14:35:06,720 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 14:35:06,721 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 14:35:06,721 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 14:35:06,721 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 14:35:06,721 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 14:35:06,721 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 14:35:06,721 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 14:35:06,764 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 14:35:06,780 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 14:35:06,784 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 14:35:06,786 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 14:35:06,786 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 14:35:06,787 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label21_true-unreach-call.c [2018-10-27 14:35:06,850 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5c554012d/fda3e808907541b1a0fa9597ee2851f5/FLAGd9272e5d7 [2018-10-27 14:35:07,495 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 14:35:07,496 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label21_true-unreach-call.c [2018-10-27 14:35:07,521 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5c554012d/fda3e808907541b1a0fa9597ee2851f5/FLAGd9272e5d7 [2018-10-27 14:35:07,539 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5c554012d/fda3e808907541b1a0fa9597ee2851f5 [2018-10-27 14:35:07,549 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 14:35:07,551 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 14:35:07,552 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 14:35:07,552 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 14:35:07,556 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 14:35:07,557 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:35:07" (1/1) ... [2018-10-27 14:35:07,560 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2be2f573 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:35:07, skipping insertion in model container [2018-10-27 14:35:07,560 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:35:07" (1/1) ... [2018-10-27 14:35:07,571 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 14:35:07,670 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 14:35:08,479 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 14:35:08,484 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 14:35:08,770 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 14:35:08,791 INFO L193 MainTranslator]: Completed translation [2018-10-27 14:35:08,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:35:08 WrapperNode [2018-10-27 14:35:08,792 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 14:35:08,794 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 14:35:08,794 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 14:35:08,794 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 14:35:08,804 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:35:08" (1/1) ... [2018-10-27 14:35:08,844 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:35:08" (1/1) ... [2018-10-27 14:35:09,199 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 14:35:09,200 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 14:35:09,200 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 14:35:09,200 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 14:35:09,211 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:35:08" (1/1) ... [2018-10-27 14:35:09,211 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:35:08" (1/1) ... [2018-10-27 14:35:09,231 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:35:08" (1/1) ... [2018-10-27 14:35:09,233 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:35:08" (1/1) ... [2018-10-27 14:35:09,307 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:35:08" (1/1) ... [2018-10-27 14:35:09,339 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:35:08" (1/1) ... [2018-10-27 14:35:09,372 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:35:08" (1/1) ... [2018-10-27 14:35:09,402 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 14:35:09,403 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 14:35:09,403 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 14:35:09,403 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 14:35:09,404 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:35:08" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-27 14:35:09,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 14:35:09,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 14:35:09,473 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 14:35:09,473 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 14:35:09,474 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 14:35:09,475 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 14:35:09,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 14:35:09,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 14:35:09,475 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 14:35:09,475 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 14:35:16,609 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 14:35:16,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:35:16 BoogieIcfgContainer [2018-10-27 14:35:16,610 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 14:35:16,612 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 14:35:16,612 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 14:35:16,617 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 14:35:16,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:35:07" (1/3) ... [2018-10-27 14:35:16,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2df3cc4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:35:16, skipping insertion in model container [2018-10-27 14:35:16,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:35:08" (2/3) ... [2018-10-27 14:35:16,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2df3cc4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:35:16, skipping insertion in model container [2018-10-27 14:35:16,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:35:16" (3/3) ... [2018-10-27 14:35:16,622 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label21_true-unreach-call.c [2018-10-27 14:35:16,632 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 14:35:16,644 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 14:35:16,663 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 14:35:16,705 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 14:35:16,706 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 14:35:16,706 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 14:35:16,706 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 14:35:16,706 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 14:35:16,707 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 14:35:16,707 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 14:35:16,707 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 14:35:16,741 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-10-27 14:35:16,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-10-27 14:35:16,756 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:35:16,757 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 14:35:16,760 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:35:16,765 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:35:16,766 INFO L82 PathProgramCache]: Analyzing trace with hash -191617687, now seen corresponding path program 1 times [2018-10-27 14:35:16,769 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:35:16,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:35:16,829 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:35:16,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:35:16,829 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:35:16,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:35:17,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 14:35:17,354 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 14:35:17,354 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 14:35:17,354 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:35:17,362 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 14:35:17,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 14:35:17,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 14:35:17,382 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-10-27 14:35:25,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 14:35:25,627 INFO L93 Difference]: Finished difference Result 1550 states and 2835 transitions. [2018-10-27 14:35:25,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 14:35:25,630 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2018-10-27 14:35:25,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 14:35:25,660 INFO L225 Difference]: With dead ends: 1550 [2018-10-27 14:35:25,660 INFO L226 Difference]: Without dead ends: 1106 [2018-10-27 14:35:25,673 INFO L605 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 [2018-10-27 14:35:25,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2018-10-27 14:35:25,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 762. [2018-10-27 14:35:25,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 762 states. [2018-10-27 14:35:25,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1263 transitions. [2018-10-27 14:35:25,838 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1263 transitions. Word has length 67 [2018-10-27 14:35:25,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 14:35:25,839 INFO L481 AbstractCegarLoop]: Abstraction has 762 states and 1263 transitions. [2018-10-27 14:35:25,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 14:35:25,840 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1263 transitions. [2018-10-27 14:35:25,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-10-27 14:35:25,855 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:35:25,856 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, 2, 2, 2, 2, 2, 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] [2018-10-27 14:35:25,857 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:35:25,857 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:35:25,857 INFO L82 PathProgramCache]: Analyzing trace with hash 2147224692, now seen corresponding path program 1 times [2018-10-27 14:35:25,858 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:35:25,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:35:25,860 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:35:25,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:35:25,860 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:35:25,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:35:26,163 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 14:35:26,164 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 14:35:26,164 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 14:35:26,164 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:35:26,166 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 14:35:26,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 14:35:26,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 14:35:26,167 INFO L87 Difference]: Start difference. First operand 762 states and 1263 transitions. Second operand 5 states. [2018-10-27 14:35:38,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 14:35:38,361 INFO L93 Difference]: Finished difference Result 2245 states and 3758 transitions. [2018-10-27 14:35:38,369 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 14:35:38,369 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 140 [2018-10-27 14:35:38,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 14:35:38,382 INFO L225 Difference]: With dead ends: 2245 [2018-10-27 14:35:38,382 INFO L226 Difference]: Without dead ends: 1489 [2018-10-27 14:35:38,387 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-27 14:35:38,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1489 states. [2018-10-27 14:35:38,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1489 to 1457. [2018-10-27 14:35:38,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1457 states. [2018-10-27 14:35:38,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1457 states to 1457 states and 2152 transitions. [2018-10-27 14:35:38,453 INFO L78 Accepts]: Start accepts. Automaton has 1457 states and 2152 transitions. Word has length 140 [2018-10-27 14:35:38,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 14:35:38,454 INFO L481 AbstractCegarLoop]: Abstraction has 1457 states and 2152 transitions. [2018-10-27 14:35:38,454 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 14:35:38,454 INFO L276 IsEmpty]: Start isEmpty. Operand 1457 states and 2152 transitions. [2018-10-27 14:35:38,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-10-27 14:35:38,466 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:35:38,466 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 14:35:38,466 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:35:38,467 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:35:38,467 INFO L82 PathProgramCache]: Analyzing trace with hash 245901444, now seen corresponding path program 1 times [2018-10-27 14:35:38,467 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:35:38,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:35:38,468 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:35:38,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:35:38,468 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:35:38,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:35:38,648 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 14:35:38,648 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 14:35:38,649 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 14:35:38,649 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:35:38,649 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 14:35:38,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 14:35:38,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 14:35:38,650 INFO L87 Difference]: Start difference. First operand 1457 states and 2152 transitions. Second operand 4 states. [2018-10-27 14:35:45,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 14:35:45,421 INFO L93 Difference]: Finished difference Result 5392 states and 8275 transitions. [2018-10-27 14:35:45,422 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 14:35:45,422 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2018-10-27 14:35:45,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 14:35:45,449 INFO L225 Difference]: With dead ends: 5392 [2018-10-27 14:35:45,449 INFO L226 Difference]: Without dead ends: 3941 [2018-10-27 14:35:45,464 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 14:35:45,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3941 states. [2018-10-27 14:35:45,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3941 to 3939. [2018-10-27 14:35:45,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3939 states. [2018-10-27 14:35:45,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3939 states to 3939 states and 5427 transitions. [2018-10-27 14:35:45,575 INFO L78 Accepts]: Start accepts. Automaton has 3939 states and 5427 transitions. Word has length 148 [2018-10-27 14:35:45,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 14:35:45,576 INFO L481 AbstractCegarLoop]: Abstraction has 3939 states and 5427 transitions. [2018-10-27 14:35:45,576 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 14:35:45,576 INFO L276 IsEmpty]: Start isEmpty. Operand 3939 states and 5427 transitions. [2018-10-27 14:35:45,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-10-27 14:35:45,584 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:35:45,584 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 14:35:45,584 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:35:45,584 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:35:45,585 INFO L82 PathProgramCache]: Analyzing trace with hash -724599134, now seen corresponding path program 1 times [2018-10-27 14:35:45,585 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:35:45,586 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:35:45,586 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:35:45,586 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:35:45,586 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:35:45,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:35:45,872 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 14:35:46,002 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 120 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 14:35:46,003 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 14:35:46,003 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 14:35:46,004 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 225 with the following transitions: [2018-10-27 14:35:46,007 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [509], [511], [514], [522], [530], [538], [546], [554], [562], [566], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [633], [638], [640], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-27 14:35:46,053 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 14:35:46,054 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 14:35:46,511 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 14:35:46,513 INFO L272 AbstractInterpreter]: Visited 90 different actions 90 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 14:35:46,528 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:35:46,528 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 14:35:47,087 INFO L227 lantSequenceWeakener]: Weakened 213 states. On average, predicates are now at 78.36% of their original sizes. [2018-10-27 14:35:47,088 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 14:35:47,358 INFO L415 sIntCurrentIteration]: We unified 223 AI predicates to 223 [2018-10-27 14:35:47,358 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 14:35:47,359 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 14:35:47,359 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-10-27 14:35:47,360 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:35:47,360 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 14:35:47,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 14:35:47,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 14:35:47,361 INFO L87 Difference]: Start difference. First operand 3939 states and 5427 transitions. Second operand 6 states. [2018-10-27 14:35:49,638 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown