java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label37_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 08:51:30,404 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 08:51:30,407 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 08:51:30,422 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 08:51:30,424 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 08:51:30,427 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 08:51:30,429 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 08:51:30,432 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 08:51:30,435 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 08:51:30,436 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 08:51:30,438 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 08:51:30,440 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 08:51:30,441 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 08:51:30,443 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 08:51:30,450 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 08:51:30,451 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 08:51:30,455 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 08:51:30,460 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 08:51:30,462 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 08:51:30,464 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 08:51:30,466 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 08:51:30,469 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 08:51:30,474 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 08:51:30,474 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 08:51:30,474 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 08:51:30,475 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 08:51:30,478 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 08:51:30,479 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 08:51:30,480 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 08:51:30,481 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 08:51:30,481 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 08:51:30,484 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 08:51:30,484 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 08:51:30,484 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 08:51:30,485 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 08:51:30,486 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 08:51:30,487 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-11-07 08:51:30,511 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 08:51:30,512 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 08:51:30,512 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 08:51:30,513 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 08:51:30,514 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 08:51:30,514 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 08:51:30,514 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 08:51:30,514 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 08:51:30,514 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 08:51:30,515 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 08:51:30,515 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 08:51:30,515 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 08:51:30,515 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 08:51:30,515 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 08:51:30,516 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 08:51:30,517 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 08:51:30,517 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 08:51:30,517 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 08:51:30,517 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 08:51:30,517 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 08:51:30,518 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 08:51:30,519 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 08:51:30,519 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 08:51:30,520 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 08:51:30,520 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 08:51:30,520 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 08:51:30,520 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 08:51:30,520 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 08:51:30,521 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 08:51:30,521 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 08:51:30,521 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 08:51:30,521 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 08:51:30,521 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 08:51:30,522 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 08:51:30,522 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 08:51:30,522 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 08:51:30,596 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 08:51:30,612 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 08:51:30,617 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 08:51:30,618 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 08:51:30,619 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 08:51:30,620 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label37_true-unreach-call.c [2018-11-07 08:51:30,684 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ac48767d/e2be4379c4db42a1b638587160d179f1/FLAGd72ad07af [2018-11-07 08:51:31,504 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 08:51:31,505 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label37_true-unreach-call.c [2018-11-07 08:51:31,545 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ac48767d/e2be4379c4db42a1b638587160d179f1/FLAGd72ad07af [2018-11-07 08:51:31,568 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ac48767d/e2be4379c4db42a1b638587160d179f1 [2018-11-07 08:51:31,581 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 08:51:31,583 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 08:51:31,585 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 08:51:31,585 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 08:51:31,592 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 08:51:31,593 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:51:31" (1/1) ... [2018-11-07 08:51:31,598 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72bd0739 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:51:31, skipping insertion in model container [2018-11-07 08:51:31,598 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:51:31" (1/1) ... [2018-11-07 08:51:31,609 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 08:51:31,823 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 08:51:33,319 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 08:51:33,324 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 08:51:34,111 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 08:51:34,150 INFO L193 MainTranslator]: Completed translation [2018-11-07 08:51:34,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:51:34 WrapperNode [2018-11-07 08:51:34,150 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 08:51:34,151 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 08:51:34,152 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 08:51:34,152 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 08:51:34,162 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:51:34" (1/1) ... [2018-11-07 08:51:34,517 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:51:34" (1/1) ... [2018-11-07 08:51:34,526 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 08:51:34,527 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 08:51:34,527 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 08:51:34,527 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 08:51:34,539 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:51:34" (1/1) ... [2018-11-07 08:51:34,539 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:51:34" (1/1) ... [2018-11-07 08:51:34,567 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:51:34" (1/1) ... [2018-11-07 08:51:34,567 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:51:34" (1/1) ... [2018-11-07 08:51:34,683 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:51:34" (1/1) ... [2018-11-07 08:51:34,728 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:51:34" (1/1) ... [2018-11-07 08:51:34,754 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:51:34" (1/1) ... [2018-11-07 08:51:34,783 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 08:51:34,784 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 08:51:34,784 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 08:51:34,784 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 08:51:34,785 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:51:34" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 08:51:34,842 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 08:51:34,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 08:51:34,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 08:51:34,842 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 08:51:34,843 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 08:51:34,843 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 08:51:34,843 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 08:51:34,843 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 08:51:34,843 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 08:51:34,844 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 08:51:34,844 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 08:51:34,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 08:51:34,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 08:51:34,845 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 08:51:34,845 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 08:51:44,635 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 08:51:44,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:51:44 BoogieIcfgContainer [2018-11-07 08:51:44,637 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 08:51:44,638 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 08:51:44,638 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 08:51:44,641 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 08:51:44,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:51:31" (1/3) ... [2018-11-07 08:51:44,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c20a9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:51:44, skipping insertion in model container [2018-11-07 08:51:44,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:51:34" (2/3) ... [2018-11-07 08:51:44,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c20a9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:51:44, skipping insertion in model container [2018-11-07 08:51:44,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:51:44" (3/3) ... [2018-11-07 08:51:44,645 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label37_true-unreach-call.c [2018-11-07 08:51:44,655 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 08:51:44,665 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 08:51:44,683 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 08:51:44,732 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 08:51:44,732 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 08:51:44,732 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 08:51:44,732 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 08:51:44,733 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 08:51:44,733 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 08:51:44,733 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 08:51:44,733 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 08:51:44,776 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-11-07 08:51:44,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-11-07 08:51:44,786 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:51:44,788 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] [2018-11-07 08:51:44,790 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:51:44,796 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:51:44,797 INFO L82 PathProgramCache]: Analyzing trace with hash -1389126997, now seen corresponding path program 1 times [2018-11-07 08:51:44,799 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:51:44,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:51:44,858 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:51:44,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:51:44,859 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:51:44,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:51:45,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:51:45,269 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:51:45,269 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 08:51:45,269 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:51:45,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 08:51:45,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 08:51:45,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 08:51:45,298 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-11-07 08:51:54,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:51:54,012 INFO L93 Difference]: Finished difference Result 3087 states and 5699 transitions. [2018-11-07 08:51:54,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 08:51:54,014 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 61 [2018-11-07 08:51:54,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:51:54,049 INFO L225 Difference]: With dead ends: 3087 [2018-11-07 08:51:54,050 INFO L226 Difference]: Without dead ends: 1965 [2018-11-07 08:51:54,061 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 08:51:54,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1965 states. [2018-11-07 08:51:54,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1965 to 1959. [2018-11-07 08:51:54,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1959 states. [2018-11-07 08:51:54,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1959 states to 1959 states and 3512 transitions. [2018-11-07 08:51:54,229 INFO L78 Accepts]: Start accepts. Automaton has 1959 states and 3512 transitions. Word has length 61 [2018-11-07 08:51:54,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:51:54,230 INFO L480 AbstractCegarLoop]: Abstraction has 1959 states and 3512 transitions. [2018-11-07 08:51:54,230 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 08:51:54,230 INFO L276 IsEmpty]: Start isEmpty. Operand 1959 states and 3512 transitions. [2018-11-07 08:51:54,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-11-07 08:51:54,243 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:51:54,243 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 08:51:54,243 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:51:54,244 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:51:54,244 INFO L82 PathProgramCache]: Analyzing trace with hash -159322310, now seen corresponding path program 1 times [2018-11-07 08:51:54,244 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:51:54,246 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:51:54,246 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:51:54,246 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:51:54,246 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:51:54,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:51:54,649 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 08:51:54,767 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:51:54,768 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:51:54,768 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 08:51:54,768 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:51:54,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 08:51:54,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 08:51:54,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 08:51:54,771 INFO L87 Difference]: Start difference. First operand 1959 states and 3512 transitions. Second operand 6 states. [2018-11-07 08:52:07,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:52:07,123 INFO L93 Difference]: Finished difference Result 5634 states and 10287 transitions. [2018-11-07 08:52:07,127 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 08:52:07,127 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 138 [2018-11-07 08:52:07,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:52:07,156 INFO L225 Difference]: With dead ends: 5634 [2018-11-07 08:52:07,157 INFO L226 Difference]: Without dead ends: 3681 [2018-11-07 08:52:07,165 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 08:52:07,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3681 states. [2018-11-07 08:52:07,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3681 to 3650. [2018-11-07 08:52:07,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3650 states. [2018-11-07 08:52:07,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3650 states to 3650 states and 5957 transitions. [2018-11-07 08:52:07,292 INFO L78 Accepts]: Start accepts. Automaton has 3650 states and 5957 transitions. Word has length 138 [2018-11-07 08:52:07,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:52:07,292 INFO L480 AbstractCegarLoop]: Abstraction has 3650 states and 5957 transitions. [2018-11-07 08:52:07,292 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 08:52:07,293 INFO L276 IsEmpty]: Start isEmpty. Operand 3650 states and 5957 transitions. [2018-11-07 08:52:07,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-11-07 08:52:07,305 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:52:07,305 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 08:52:07,305 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:52:07,306 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:52:07,306 INFO L82 PathProgramCache]: Analyzing trace with hash -587412254, now seen corresponding path program 1 times [2018-11-07 08:52:07,306 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:52:07,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:52:07,307 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:52:07,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:52:07,309 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:52:07,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:52:07,634 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 08:52:08,020 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:52:08,020 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:52:08,021 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 08:52:08,021 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:52:08,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 08:52:08,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 08:52:08,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 08:52:08,022 INFO L87 Difference]: Start difference. First operand 3650 states and 5957 transitions. Second operand 6 states. [2018-11-07 08:52:20,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:52:20,589 INFO L93 Difference]: Finished difference Result 12391 states and 20613 transitions. [2018-11-07 08:52:20,590 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 08:52:20,590 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 157 [2018-11-07 08:52:20,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:52:20,638 INFO L225 Difference]: With dead ends: 12391 [2018-11-07 08:52:20,638 INFO L226 Difference]: Without dead ends: 8747 [2018-11-07 08:52:20,661 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 08:52:20,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8747 states. [2018-11-07 08:52:20,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8747 to 8687. [2018-11-07 08:52:20,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8687 states. [2018-11-07 08:52:20,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8687 states to 8687 states and 12870 transitions. [2018-11-07 08:52:20,903 INFO L78 Accepts]: Start accepts. Automaton has 8687 states and 12870 transitions. Word has length 157 [2018-11-07 08:52:20,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:52:20,904 INFO L480 AbstractCegarLoop]: Abstraction has 8687 states and 12870 transitions. [2018-11-07 08:52:20,904 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 08:52:20,904 INFO L276 IsEmpty]: Start isEmpty. Operand 8687 states and 12870 transitions. [2018-11-07 08:52:20,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2018-11-07 08:52:20,910 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:52:20,910 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 08:52:20,911 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:52:20,911 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:52:20,912 INFO L82 PathProgramCache]: Analyzing trace with hash 955353466, now seen corresponding path program 1 times [2018-11-07 08:52:20,912 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:52:20,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:52:20,915 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:52:20,915 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:52:20,915 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:52:20,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:52:21,259 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 08:52:21,384 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:52:21,384 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:52:21,384 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 08:52:21,384 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:52:21,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 08:52:21,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 08:52:21,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 08:52:21,386 INFO L87 Difference]: Start difference. First operand 8687 states and 12870 transitions. Second operand 6 states. [2018-11-07 08:52:31,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:52:31,644 INFO L93 Difference]: Finished difference Result 22915 states and 34933 transitions. [2018-11-07 08:52:31,647 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 08:52:31,648 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 169 [2018-11-07 08:52:31,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:52:31,713 INFO L225 Difference]: With dead ends: 22915 [2018-11-07 08:52:31,713 INFO L226 Difference]: Without dead ends: 14234 [2018-11-07 08:52:31,751 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 08:52:31,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14234 states. [2018-11-07 08:52:32,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14234 to 14063. [2018-11-07 08:52:32,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14063 states. [2018-11-07 08:52:32,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14063 states to 14063 states and 19980 transitions. [2018-11-07 08:52:32,100 INFO L78 Accepts]: Start accepts. Automaton has 14063 states and 19980 transitions. Word has length 169 [2018-11-07 08:52:32,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:52:32,101 INFO L480 AbstractCegarLoop]: Abstraction has 14063 states and 19980 transitions. [2018-11-07 08:52:32,101 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 08:52:32,101 INFO L276 IsEmpty]: Start isEmpty. Operand 14063 states and 19980 transitions. [2018-11-07 08:52:32,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-11-07 08:52:32,111 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:52:32,111 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 08:52:32,112 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:52:32,112 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:52:32,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1006516317, now seen corresponding path program 1 times [2018-11-07 08:52:32,112 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:52:32,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:52:32,113 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:52:32,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:52:32,114 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:52:32,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:52:32,430 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 108 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 08:52:32,431 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:52:32,431 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 08:52:32,435 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 225 with the following transitions: [2018-11-07 08:52:32,443 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2859], [2867], [2875], [2883], [2891], [2899], [2907], [2915], [2923], [2931], [2939], [2947], [2955], [2963], [2971], [2979], [2987], [2995], [3003], [3011], [3015], [3017], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3128], [3129], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3225], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-11-07 08:52:32,508 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 08:52:32,509 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 08:52:33,033 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 08:52:33,036 INFO L272 AbstractInterpreter]: Visited 96 different actions 96 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 08:52:33,045 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:52:33,046 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 08:52:33,575 INFO L227 lantSequenceWeakener]: Weakened 215 states. On average, predicates are now at 71.55% of their original sizes. [2018-11-07 08:52:33,575 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 08:52:33,839 INFO L415 sIntCurrentIteration]: We unified 223 AI predicates to 223 [2018-11-07 08:52:33,839 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 08:52:33,843 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 08:52:33,843 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2018-11-07 08:52:33,843 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:52:33,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 08:52:33,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 08:52:33,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 08:52:33,845 INFO L87 Difference]: Start difference. First operand 14063 states and 19980 transitions. Second operand 6 states. Received shutdown request... [2018-11-07 08:55:32,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 08:55:32,825 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 08:55:32,831 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 08:55:32,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 08:55:32 BoogieIcfgContainer [2018-11-07 08:55:32,832 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 08:55:32,833 INFO L168 Benchmark]: Toolchain (without parser) took 241250.63 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 3.2 GB in the end (delta: -1.8 GB). Peak memory consumption was 879.3 MB. Max. memory is 7.1 GB. [2018-11-07 08:55:32,834 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 08:55:32,835 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2566.41 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 243.1 MB). Peak memory consumption was 243.1 MB. Max. memory is 7.1 GB. [2018-11-07 08:55:32,835 INFO L168 Benchmark]: Boogie Procedure Inliner took 375.28 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 800.6 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 67.8 MB. Max. memory is 7.1 GB. [2018-11-07 08:55:32,836 INFO L168 Benchmark]: Boogie Preprocessor took 256.39 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 37.3 MB). Peak memory consumption was 37.3 MB. Max. memory is 7.1 GB. [2018-11-07 08:55:32,837 INFO L168 Benchmark]: RCFGBuilder took 9852.93 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 172.5 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 4.1 MB). Peak memory consumption was 672.2 MB. Max. memory is 7.1 GB. [2018-11-07 08:55:32,838 INFO L168 Benchmark]: TraceAbstraction took 228194.12 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.2 GB in the beginning and 3.2 GB in the end (delta: -983.8 MB). Peak memory consumption was 720.7 MB. Max. memory is 7.1 GB. [2018-11-07 08:55:32,844 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2566.41 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 243.1 MB). Peak memory consumption was 243.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 375.28 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 800.6 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 67.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 256.39 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 37.3 MB). Peak memory consumption was 37.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9852.93 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 172.5 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 4.1 MB). Peak memory consumption was 672.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 228194.12 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.2 GB in the beginning and 3.2 GB in the end (delta: -983.8 MB). Peak memory consumption was 720.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 174]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 174). Cancelled while BasicCegarLoop was constructing difference of abstraction (14063states) and FLOYD_HOARE automaton (currently 6 states, 6 states before enhancement),while ReachableStatesComputation was computing reachable states (14774 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 228.1s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 223.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2589 SDtfs, 14628 SDslu, 2198 SDs, 0 SdLazy, 22604 SolverSat, 5725 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 194.0s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 260 GetRequests, 228 SyntacticMatches, 5 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14063occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.6s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9976921190851785 AbsIntWeakeningRatio, 0.1210762331838565 AbsIntAvgWeakeningVarsNumRemoved, 16.430493273542602 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 4 MinimizatonAttempts, 268 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 749 NumberOfCodeBlocks, 749 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 744 ConstructedInterpolants, 0 QuantifiedInterpolants, 418155 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 275/342 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown