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-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label46_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 08:45:25,580 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 08:45:25,582 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 08:45:25,595 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 08:45:25,596 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 08:45:25,597 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 08:45:25,599 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 08:45:25,601 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 08:45:25,603 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 08:45:25,604 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 08:45:25,605 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 08:45:25,605 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 08:45:25,606 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 08:45:25,607 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 08:45:25,608 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 08:45:25,611 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 08:45:25,612 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 08:45:25,618 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 08:45:25,620 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 08:45:25,627 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 08:45:25,629 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 08:45:25,632 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 08:45:25,634 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 08:45:25,634 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 08:45:25,637 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 08:45:25,638 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 08:45:25,639 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 08:45:25,640 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 08:45:25,646 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 08:45:25,647 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 08:45:25,647 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 08:45:25,648 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 08:45:25,648 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 08:45:25,648 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 08:45:25,651 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 08:45:25,653 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 08:45:25,653 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-27 08:45:25,684 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 08:45:25,685 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 08:45:25,685 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 08:45:25,686 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 08:45:25,686 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 08:45:25,686 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 08:45:25,686 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-27 08:45:25,686 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 08:45:25,687 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 08:45:25,688 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 08:45:25,688 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 08:45:25,688 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 08:45:25,688 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 08:45:25,688 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 08:45:25,689 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 08:45:25,689 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 08:45:25,690 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 08:45:25,691 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 08:45:25,691 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 08:45:25,691 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 08:45:25,691 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 08:45:25,691 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 08:45:25,692 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 08:45:25,692 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 08:45:25,692 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 08:45:25,692 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 08:45:25,693 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 08:45:25,693 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 08:45:25,694 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 08:45:25,694 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 08:45:25,694 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 08:45:25,694 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 08:45:25,694 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 08:45:25,695 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 08:45:25,695 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 08:45:25,695 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 08:45:25,764 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 08:45:25,783 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 08:45:25,788 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 08:45:25,790 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 08:45:25,791 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 08:45:25,792 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label46_true-unreach-call.c [2018-10-27 08:45:25,862 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/21f9fa01c/53e3dc40a5764127ac7176e32e00bb1d/FLAGffb9104d2 [2018-10-27 08:45:26,605 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 08:45:26,607 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label46_true-unreach-call.c [2018-10-27 08:45:26,633 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/21f9fa01c/53e3dc40a5764127ac7176e32e00bb1d/FLAGffb9104d2 [2018-10-27 08:45:26,650 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/21f9fa01c/53e3dc40a5764127ac7176e32e00bb1d [2018-10-27 08:45:26,663 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 08:45:26,665 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 08:45:26,666 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 08:45:26,666 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 08:45:26,671 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 08:45:26,672 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:45:26" (1/1) ... [2018-10-27 08:45:26,676 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@662db0a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:45:26, skipping insertion in model container [2018-10-27 08:45:26,676 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:45:26" (1/1) ... [2018-10-27 08:45:26,687 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 08:45:26,825 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 08:45:27,795 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 08:45:27,800 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 08:45:28,247 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 08:45:28,277 INFO L193 MainTranslator]: Completed translation [2018-10-27 08:45:28,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:45:28 WrapperNode [2018-10-27 08:45:28,278 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 08:45:28,279 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 08:45:28,279 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 08:45:28,279 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 08:45:28,290 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:45:28" (1/1) ... [2018-10-27 08:45:28,338 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:45:28" (1/1) ... [2018-10-27 08:45:28,698 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 08:45:28,699 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 08:45:28,699 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 08:45:28,699 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 08:45:28,711 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:45:28" (1/1) ... [2018-10-27 08:45:28,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:45:28" (1/1) ... [2018-10-27 08:45:28,726 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:45:28" (1/1) ... [2018-10-27 08:45:28,727 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:45:28" (1/1) ... [2018-10-27 08:45:28,806 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:45:28" (1/1) ... [2018-10-27 08:45:28,845 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:45:28" (1/1) ... [2018-10-27 08:45:28,871 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:45:28" (1/1) ... [2018-10-27 08:45:28,895 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 08:45:28,896 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 08:45:28,897 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 08:45:28,897 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 08:45:28,898 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:45:28" (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 08:45:28,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 08:45:28,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 08:45:28,975 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-27 08:45:28,975 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-27 08:45:28,976 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 08:45:28,976 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 08:45:28,976 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 08:45:28,976 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 08:45:28,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 08:45:28,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 08:45:28,978 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 08:45:28,979 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 08:45:37,108 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 08:45:37,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:45:37 BoogieIcfgContainer [2018-10-27 08:45:37,111 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 08:45:37,113 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 08:45:37,113 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 08:45:37,116 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 08:45:37,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 08:45:26" (1/3) ... [2018-10-27 08:45:37,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ef303b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:45:37, skipping insertion in model container [2018-10-27 08:45:37,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:45:28" (2/3) ... [2018-10-27 08:45:37,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ef303b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:45:37, skipping insertion in model container [2018-10-27 08:45:37,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:45:37" (3/3) ... [2018-10-27 08:45:37,120 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label46_true-unreach-call.c [2018-10-27 08:45:37,130 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 08:45:37,140 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 08:45:37,158 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 08:45:37,204 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 08:45:37,204 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 08:45:37,205 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 08:45:37,205 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 08:45:37,205 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 08:45:37,205 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 08:45:37,205 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 08:45:37,206 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 08:45:37,244 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-10-27 08:45:37,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-27 08:45:37,253 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:45:37,254 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] [2018-10-27 08:45:37,259 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:45:37,265 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:45:37,265 INFO L82 PathProgramCache]: Analyzing trace with hash -121741353, now seen corresponding path program 1 times [2018-10-27 08:45:37,268 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:45:37,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:45:37,317 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:45:37,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:45:37,317 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:45:37,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:45:37,781 WARN L179 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 08:45:37,833 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 08:45:37,836 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:45:37,836 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 08:45:37,836 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:45:37,843 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 08:45:37,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 08:45:37,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 08:45:37,862 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-10-27 08:45:44,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:45:44,666 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-10-27 08:45:44,671 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 08:45:44,672 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2018-10-27 08:45:44,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:45:44,705 INFO L225 Difference]: With dead ends: 2251 [2018-10-27 08:45:44,706 INFO L226 Difference]: Without dead ends: 1474 [2018-10-27 08:45:44,720 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 08:45:44,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-10-27 08:45:44,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-10-27 08:45:44,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-10-27 08:45:44,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2801 transitions. [2018-10-27 08:45:44,885 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2801 transitions. Word has length 43 [2018-10-27 08:45:44,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:45:44,886 INFO L481 AbstractCegarLoop]: Abstraction has 1474 states and 2801 transitions. [2018-10-27 08:45:44,886 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 08:45:44,886 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2801 transitions. [2018-10-27 08:45:44,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-10-27 08:45:44,893 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:45:44,893 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:45:44,894 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:45:44,894 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:45:44,894 INFO L82 PathProgramCache]: Analyzing trace with hash 1147726576, now seen corresponding path program 1 times [2018-10-27 08:45:44,894 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:45:44,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:45:44,895 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:45:44,896 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:45:44,896 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:45:44,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:45:45,207 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:45:45,207 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:45:45,208 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 08:45:45,208 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:45:45,210 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 08:45:45,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 08:45:45,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 08:45:45,211 INFO L87 Difference]: Start difference. First operand 1474 states and 2801 transitions. Second operand 6 states. [2018-10-27 08:45:56,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:45:56,763 INFO L93 Difference]: Finished difference Result 5789 states and 11192 transitions. [2018-10-27 08:45:56,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 08:45:56,764 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 117 [2018-10-27 08:45:56,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:45:56,795 INFO L225 Difference]: With dead ends: 5789 [2018-10-27 08:45:56,796 INFO L226 Difference]: Without dead ends: 4321 [2018-10-27 08:45:56,807 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 08:45:56,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4321 states. [2018-10-27 08:45:56,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4321 to 4295. [2018-10-27 08:45:56,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4295 states. [2018-10-27 08:45:56,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4295 states to 4295 states and 7032 transitions. [2018-10-27 08:45:56,963 INFO L78 Accepts]: Start accepts. Automaton has 4295 states and 7032 transitions. Word has length 117 [2018-10-27 08:45:56,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:45:56,963 INFO L481 AbstractCegarLoop]: Abstraction has 4295 states and 7032 transitions. [2018-10-27 08:45:56,964 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 08:45:56,964 INFO L276 IsEmpty]: Start isEmpty. Operand 4295 states and 7032 transitions. [2018-10-27 08:45:56,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-10-27 08:45:56,968 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:45:56,969 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:45:56,969 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:45:56,969 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:45:56,969 INFO L82 PathProgramCache]: Analyzing trace with hash 562465401, now seen corresponding path program 1 times [2018-10-27 08:45:56,970 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:45:56,973 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:45:56,973 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:45:56,973 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:45:56,973 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:45:57,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:45:57,189 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:45:57,190 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:45:57,190 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 08:45:57,190 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:45:57,191 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 08:45:57,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 08:45:57,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 08:45:57,192 INFO L87 Difference]: Start difference. First operand 4295 states and 7032 transitions. Second operand 5 states. [2018-10-27 08:46:09,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:46:09,604 INFO L93 Difference]: Finished difference Result 14334 states and 23470 transitions. [2018-10-27 08:46:09,605 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 08:46:09,606 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2018-10-27 08:46:09,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:46:09,656 INFO L225 Difference]: With dead ends: 14334 [2018-10-27 08:46:09,656 INFO L226 Difference]: Without dead ends: 10045 [2018-10-27 08:46:09,677 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 08:46:09,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10045 states. [2018-10-27 08:46:09,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10045 to 9941. [2018-10-27 08:46:09,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9941 states. [2018-10-27 08:46:09,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9941 states to 9941 states and 14581 transitions. [2018-10-27 08:46:09,924 INFO L78 Accepts]: Start accepts. Automaton has 9941 states and 14581 transitions. Word has length 120 [2018-10-27 08:46:09,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:46:09,925 INFO L481 AbstractCegarLoop]: Abstraction has 9941 states and 14581 transitions. [2018-10-27 08:46:09,925 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 08:46:09,925 INFO L276 IsEmpty]: Start isEmpty. Operand 9941 states and 14581 transitions. [2018-10-27 08:46:09,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-10-27 08:46:09,930 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:46:09,930 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:46:09,931 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:46:09,931 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:46:09,931 INFO L82 PathProgramCache]: Analyzing trace with hash -534758187, now seen corresponding path program 1 times [2018-10-27 08:46:09,931 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:46:09,932 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:46:09,932 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:46:09,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:46:09,933 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:46:09,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:46:10,187 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:46:10,188 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:46:10,188 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 08:46:10,188 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:46:10,189 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 08:46:10,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 08:46:10,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:46:10,190 INFO L87 Difference]: Start difference. First operand 9941 states and 14581 transitions. Second operand 4 states. [2018-10-27 08:46:18,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:46:18,063 INFO L93 Difference]: Finished difference Result 29927 states and 46847 transitions. [2018-10-27 08:46:18,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 08:46:18,064 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 150 [2018-10-27 08:46:18,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:46:18,145 INFO L225 Difference]: With dead ends: 29927 [2018-10-27 08:46:18,146 INFO L226 Difference]: Without dead ends: 19992 [2018-10-27 08:46:18,183 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 08:46:18,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19992 states. [2018-10-27 08:46:18,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19992 to 19989. [2018-10-27 08:46:18,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19989 states. [2018-10-27 08:46:18,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19989 states to 19989 states and 29115 transitions. [2018-10-27 08:46:18,579 INFO L78 Accepts]: Start accepts. Automaton has 19989 states and 29115 transitions. Word has length 150 [2018-10-27 08:46:18,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:46:18,579 INFO L481 AbstractCegarLoop]: Abstraction has 19989 states and 29115 transitions. [2018-10-27 08:46:18,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 08:46:18,580 INFO L276 IsEmpty]: Start isEmpty. Operand 19989 states and 29115 transitions. [2018-10-27 08:46:18,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-10-27 08:46:18,586 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:46:18,586 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 08:46:18,586 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:46:18,588 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:46:18,588 INFO L82 PathProgramCache]: Analyzing trace with hash 307186760, now seen corresponding path program 1 times [2018-10-27 08:46:18,588 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:46:18,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:46:18,589 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:46:18,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:46:18,590 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:46:18,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:46:18,803 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 72 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 08:46:18,804 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:46:18,804 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:46:18,805 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 191 with the following transitions: [2018-10-27 08:46:18,807 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], [1831], [1839], [1847], [1855], [1863], [1867], [1869], [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], [2116], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2144], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-27 08:46:18,854 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:46:18,854 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:46:19,322 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 08:46:19,324 INFO L272 AbstractInterpreter]: Visited 82 different actions 82 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 08:46:19,359 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:46:19,359 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 08:46:19,832 INFO L227 lantSequenceWeakener]: Weakened 181 states. On average, predicates are now at 77.95% of their original sizes. [2018-10-27 08:46:19,833 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 08:46:20,087 INFO L415 sIntCurrentIteration]: We unified 189 AI predicates to 189 [2018-10-27 08:46:20,087 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 08:46:20,088 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 08:46:20,089 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2018-10-27 08:46:20,089 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:46:20,090 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 08:46:20,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 08:46:20,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 08:46:20,090 INFO L87 Difference]: Start difference. First operand 19989 states and 29115 transitions. Second operand 6 states. [2018-10-27 08:48:15,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:48:15,267 INFO L93 Difference]: Finished difference Result 40677 states and 59145 transitions. [2018-10-27 08:48:15,267 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 08:48:15,267 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 190 [2018-10-27 08:48:15,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:48:15,335 INFO L225 Difference]: With dead ends: 40677 [2018-10-27 08:48:15,336 INFO L226 Difference]: Without dead ends: 20694 [2018-10-27 08:48:15,367 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 190 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-27 08:48:15,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20694 states. [2018-10-27 08:48:15,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20694 to 20692. [2018-10-27 08:48:15,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20692 states. [2018-10-27 08:48:15,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20692 states to 20692 states and 29827 transitions. [2018-10-27 08:48:15,752 INFO L78 Accepts]: Start accepts. Automaton has 20692 states and 29827 transitions. Word has length 190 [2018-10-27 08:48:15,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:48:15,753 INFO L481 AbstractCegarLoop]: Abstraction has 20692 states and 29827 transitions. [2018-10-27 08:48:15,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 08:48:15,753 INFO L276 IsEmpty]: Start isEmpty. Operand 20692 states and 29827 transitions. [2018-10-27 08:48:15,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2018-10-27 08:48:15,764 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:48:15,765 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:48:15,765 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:48:15,765 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:48:15,766 INFO L82 PathProgramCache]: Analyzing trace with hash 419013354, now seen corresponding path program 1 times [2018-10-27 08:48:15,766 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:48:15,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:48:15,768 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:48:15,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:48:15,768 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:48:15,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:48:16,306 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-27 08:48:16,516 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-27 08:48:16,751 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-27 08:48:17,181 WARN L179 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-10-27 08:48:17,728 WARN L179 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2018-10-27 08:48:18,005 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 167 proven. 153 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 08:48:18,005 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:48:18,005 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:48:18,005 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 378 with the following transitions: [2018-10-27 08:48:18,006 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], [1831], [1839], [1847], [1855], [1863], [1867], [1869], [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], [2116], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2144], [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], [2265], [2269], [2273], [2277], [2281], [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] [2018-10-27 08:48:18,017 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:48:18,018 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:48:18,258 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 08:48:18,259 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. [2018-10-27 08:48:18,293 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:48:18,293 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 08:48:18,689 INFO L227 lantSequenceWeakener]: Weakened 374 states. On average, predicates are now at 77.67% of their original sizes. [2018-10-27 08:48:18,689 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 08:48:19,025 INFO L415 sIntCurrentIteration]: We unified 376 AI predicates to 376 [2018-10-27 08:48:19,025 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 08:48:19,025 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 08:48:19,026 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2018-10-27 08:48:19,027 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:48:19,028 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-27 08:48:19,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-27 08:48:19,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-10-27 08:48:19,028 INFO L87 Difference]: Start difference. First operand 20692 states and 29827 transitions. Second operand 10 states. Received shutdown request... [2018-10-27 08:49:26,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-27 08:49:26,920 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 08:49:26,925 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 08:49:26,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 08:49:26 BoogieIcfgContainer [2018-10-27 08:49:26,926 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 08:49:26,927 INFO L168 Benchmark]: Toolchain (without parser) took 240263.64 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -758.3 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-10-27 08:49:26,929 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 08:49:26,929 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1612.58 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-10-27 08:49:26,930 INFO L168 Benchmark]: Boogie Procedure Inliner took 419.87 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 775.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -951.6 MB). Peak memory consumption was 45.1 MB. Max. memory is 7.1 GB. [2018-10-27 08:49:26,931 INFO L168 Benchmark]: Boogie Preprocessor took 196.86 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. [2018-10-27 08:49:26,932 INFO L168 Benchmark]: RCFGBuilder took 8214.68 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 504.1 MB). Peak memory consumption was 504.1 MB. Max. memory is 7.1 GB. [2018-10-27 08:49:26,933 INFO L168 Benchmark]: TraceAbstraction took 229813.55 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.7 GB in the beginning and 2.2 GB in the end (delta: -473.1 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-10-27 08:49:26,939 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1612.58 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 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 419.87 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 775.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -951.6 MB). Peak memory consumption was 45.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 196.86 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8214.68 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 504.1 MB). Peak memory consumption was 504.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 229813.55 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.7 GB in the beginning and 2.2 GB in the end (delta: -473.1 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 117]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 117). Cancelled while BasicCegarLoop was constructing difference of abstraction (20692states) and FLOYD_HOARE automaton (currently 16 states, 10 states before enhancement),while ReachableStatesComputation was computing reachable states (22911 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 229.7s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 222.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2886 SDtfs, 13267 SDslu, 1209 SDs, 0 SdLazy, 25788 SolverSat, 5922 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 179.2s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 604 GetRequests, 563 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20692occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.8s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9972312694359637 AbsIntWeakeningRatio, 0.10265486725663717 AbsIntAvgWeakeningVarsNumRemoved, 16.330973451327434 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.3s AutomataMinimizationTime, 5 MinimizatonAttempts, 135 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 997 NumberOfCodeBlocks, 997 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 991 ConstructedInterpolants, 0 QuantifiedInterpolants, 1307609 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 357/575 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown