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_label05_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 14:32:08,549 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 14:32:08,552 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 14:32:08,566 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 14:32:08,567 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 14:32:08,570 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 14:32:08,572 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 14:32:08,574 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 14:32:08,576 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 14:32:08,578 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 14:32:08,579 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 14:32:08,579 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 14:32:08,580 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 14:32:08,581 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 14:32:08,582 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 14:32:08,583 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 14:32:08,584 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 14:32:08,585 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 14:32:08,587 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 14:32:08,589 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 14:32:08,590 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 14:32:08,591 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 14:32:08,594 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 14:32:08,594 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 14:32:08,594 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 14:32:08,595 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 14:32:08,596 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 14:32:08,597 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 14:32:08,598 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 14:32:08,599 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 14:32:08,599 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 14:32:08,600 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 14:32:08,600 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 14:32:08,600 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 14:32:08,601 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 14:32:08,602 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 14:32:08,602 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 14:32:08,629 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 14:32:08,631 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 14:32:08,632 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 14:32:08,632 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 14:32:08,632 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 14:32:08,633 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 14:32:08,633 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 14:32:08,633 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 14:32:08,633 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 14:32:08,633 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 14:32:08,634 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 14:32:08,637 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 14:32:08,638 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 14:32:08,638 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 14:32:08,638 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 14:32:08,639 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 14:32:08,640 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 14:32:08,641 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 14:32:08,641 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 14:32:08,641 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 14:32:08,641 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 14:32:08,641 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 14:32:08,642 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 14:32:08,642 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 14:32:08,642 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 14:32:08,642 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 14:32:08,643 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 14:32:08,643 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 14:32:08,643 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 14:32:08,643 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 14:32:08,643 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 14:32:08,644 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 14:32:08,645 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 14:32:08,645 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 14:32:08,714 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 14:32:08,731 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 14:32:08,737 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 14:32:08,738 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 14:32:08,739 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 14:32:08,740 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label05_true-unreach-call.c [2018-10-27 14:32:08,800 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/643eeb898/e22fffe3b3544214b98a7598eccb941e/FLAGcb9899b91 [2018-10-27 14:32:09,552 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 14:32:09,554 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label05_true-unreach-call.c [2018-10-27 14:32:09,575 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/643eeb898/e22fffe3b3544214b98a7598eccb941e/FLAGcb9899b91 [2018-10-27 14:32:09,592 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/643eeb898/e22fffe3b3544214b98a7598eccb941e [2018-10-27 14:32:09,604 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 14:32:09,606 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 14:32:09,607 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 14:32:09,607 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 14:32:09,611 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 14:32:09,612 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:32:09" (1/1) ... [2018-10-27 14:32:09,615 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f32220e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:32:09, skipping insertion in model container [2018-10-27 14:32:09,616 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:32:09" (1/1) ... [2018-10-27 14:32:09,626 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 14:32:09,722 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 14:32:10,531 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 14:32:10,536 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 14:32:10,811 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 14:32:10,836 INFO L193 MainTranslator]: Completed translation [2018-10-27 14:32:10,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:32:10 WrapperNode [2018-10-27 14:32:10,836 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 14:32:10,838 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 14:32:10,838 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 14:32:10,838 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 14:32:10,848 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:32:10" (1/1) ... [2018-10-27 14:32:10,886 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:32:10" (1/1) ... [2018-10-27 14:32:11,249 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 14:32:11,250 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 14:32:11,250 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 14:32:11,250 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 14:32:11,262 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:32:10" (1/1) ... [2018-10-27 14:32:11,262 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:32:10" (1/1) ... [2018-10-27 14:32:11,282 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:32:10" (1/1) ... [2018-10-27 14:32:11,283 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:32:10" (1/1) ... [2018-10-27 14:32:11,356 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:32:10" (1/1) ... [2018-10-27 14:32:11,383 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:32:10" (1/1) ... [2018-10-27 14:32:11,427 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:32:10" (1/1) ... [2018-10-27 14:32:11,469 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 14:32:11,470 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 14:32:11,470 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 14:32:11,471 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 14:32:11,472 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:32:10" (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 14:32:11,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 14:32:11,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 14:32:11,544 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 14:32:11,544 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 14:32:11,545 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 14:32:11,545 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 14:32:11,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 14:32:11,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 14:32:11,545 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 14:32:11,546 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 14:32:17,667 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 14:32:17,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:32:17 BoogieIcfgContainer [2018-10-27 14:32:17,668 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 14:32:17,669 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 14:32:17,669 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 14:32:17,675 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 14:32:17,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:32:09" (1/3) ... [2018-10-27 14:32:17,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72afb927 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:32:17, skipping insertion in model container [2018-10-27 14:32:17,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:32:10" (2/3) ... [2018-10-27 14:32:17,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72afb927 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:32:17, skipping insertion in model container [2018-10-27 14:32:17,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:32:17" (3/3) ... [2018-10-27 14:32:17,680 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label05_true-unreach-call.c [2018-10-27 14:32:17,691 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 14:32:17,704 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 14:32:17,722 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 14:32:17,778 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 14:32:17,779 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 14:32:17,779 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 14:32:17,779 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 14:32:17,779 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 14:32:17,780 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 14:32:17,781 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 14:32:17,781 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 14:32:17,815 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-10-27 14:32:17,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-10-27 14:32:17,826 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:32:17,828 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, 1, 1, 1, 1] [2018-10-27 14:32:17,830 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:32:17,835 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:32:17,836 INFO L82 PathProgramCache]: Analyzing trace with hash -1575341511, now seen corresponding path program 1 times [2018-10-27 14:32:17,838 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:32:17,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:32:17,890 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:32:17,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:32:17,890 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:32:18,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:32:18,480 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 14:32:18,485 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 14:32:18,487 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 14:32:18,487 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:32:18,501 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 14:32:18,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 14:32:18,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 14:32:18,540 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-10-27 14:32:28,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 14:32:28,873 INFO L93 Difference]: Finished difference Result 1514 states and 2777 transitions. [2018-10-27 14:32:28,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 14:32:28,874 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2018-10-27 14:32:28,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 14:32:28,905 INFO L225 Difference]: With dead ends: 1514 [2018-10-27 14:32:28,906 INFO L226 Difference]: Without dead ends: 1070 [2018-10-27 14:32:28,919 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 14:32:28,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1070 states. [2018-10-27 14:32:29,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1070 to 1068. [2018-10-27 14:32:29,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2018-10-27 14:32:29,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1675 transitions. [2018-10-27 14:32:29,068 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1675 transitions. Word has length 71 [2018-10-27 14:32:29,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 14:32:29,069 INFO L481 AbstractCegarLoop]: Abstraction has 1068 states and 1675 transitions. [2018-10-27 14:32:29,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 14:32:29,069 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1675 transitions. [2018-10-27 14:32:29,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-10-27 14:32:29,078 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:32:29,079 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 14:32:29,079 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:32:29,079 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:32:29,080 INFO L82 PathProgramCache]: Analyzing trace with hash -1668103027, now seen corresponding path program 1 times [2018-10-27 14:32:29,080 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:32:29,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:32:29,081 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:32:29,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:32:29,082 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:32:29,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:32:29,393 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 14:32:29,394 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 14:32:29,394 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 14:32:29,394 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:32:29,397 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 14:32:29,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 14:32:29,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 14:32:29,398 INFO L87 Difference]: Start difference. First operand 1068 states and 1675 transitions. Second operand 4 states. [2018-10-27 14:32:35,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 14:32:35,741 INFO L93 Difference]: Finished difference Result 3988 states and 6459 transitions. [2018-10-27 14:32:35,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 14:32:35,742 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 141 [2018-10-27 14:32:35,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 14:32:35,769 INFO L225 Difference]: With dead ends: 3988 [2018-10-27 14:32:35,769 INFO L226 Difference]: Without dead ends: 2926 [2018-10-27 14:32:35,780 INFO L605 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 [2018-10-27 14:32:35,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2926 states. [2018-10-27 14:32:35,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2926 to 2613. [2018-10-27 14:32:35,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2613 states. [2018-10-27 14:32:35,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2613 states to 2613 states and 3832 transitions. [2018-10-27 14:32:35,894 INFO L78 Accepts]: Start accepts. Automaton has 2613 states and 3832 transitions. Word has length 141 [2018-10-27 14:32:35,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 14:32:35,895 INFO L481 AbstractCegarLoop]: Abstraction has 2613 states and 3832 transitions. [2018-10-27 14:32:35,895 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 14:32:35,895 INFO L276 IsEmpty]: Start isEmpty. Operand 2613 states and 3832 transitions. [2018-10-27 14:32:35,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2018-10-27 14:32:35,911 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:32:35,911 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 14:32:35,916 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:32:35,916 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:32:35,916 INFO L82 PathProgramCache]: Analyzing trace with hash -473847581, now seen corresponding path program 1 times [2018-10-27 14:32:35,917 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:32:35,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:32:35,918 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:32:35,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:32:35,919 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:32:36,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:32:36,507 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 200 proven. 237 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-10-27 14:32:36,507 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 14:32:36,507 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 14:32:36,509 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 348 with the following transitions: [2018-10-27 14:32:36,511 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], [513], [521], [529], [537], [541], [543], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [613], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [714], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-27 14:32:36,561 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 14:32:36,562 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 14:32:37,079 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 14:32:49,106 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 14:32:49,109 INFO L272 AbstractInterpreter]: Visited 109 different actions 727 times. Merged at 5 different actions 30 times. Widened at 1 different actions 2 times. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 14:32:49,125 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:32:49,125 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 14:32:51,273 INFO L227 lantSequenceWeakener]: Weakened 76 states. On average, predicates are now at 77.87% of their original sizes. [2018-10-27 14:32:51,274 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 14:32:54,816 INFO L415 sIntCurrentIteration]: We unified 346 AI predicates to 346 [2018-10-27 14:32:54,817 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 14:32:54,818 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 14:32:54,819 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [6] total 22 [2018-10-27 14:32:54,819 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:32:54,820 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-27 14:32:54,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-27 14:32:54,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2018-10-27 14:32:54,821 INFO L87 Difference]: Start difference. First operand 2613 states and 3832 transitions. Second operand 18 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown