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.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label06_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 19:11:19,434 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 19:11:19,436 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 19:11:19,458 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 19:11:19,459 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 19:11:19,461 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 19:11:19,463 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 19:11:19,465 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 19:11:19,466 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 19:11:19,467 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 19:11:19,468 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 19:11:19,468 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 19:11:19,469 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 19:11:19,470 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 19:11:19,471 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 19:11:19,472 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 19:11:19,473 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 19:11:19,475 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 19:11:19,477 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 19:11:19,482 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 19:11:19,483 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 19:11:19,485 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 19:11:19,487 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 19:11:19,488 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 19:11:19,491 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 19:11:19,492 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 19:11:19,493 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 19:11:19,494 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 19:11:19,494 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 19:11:19,499 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 19:11:19,499 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 19:11:19,501 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 19:11:19,502 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 19:11:19,502 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 19:11:19,503 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 19:11:19,504 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 19:11:19,504 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 19:11:19,531 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 19:11:19,532 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 19:11:19,533 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 19:11:19,533 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 19:11:19,533 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 19:11:19,533 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 19:11:19,533 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 19:11:19,534 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 19:11:19,534 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 19:11:19,534 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 19:11:19,534 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 19:11:19,534 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 19:11:19,535 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 19:11:19,535 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 19:11:19,535 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 19:11:19,536 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 19:11:19,536 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 19:11:19,536 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 19:11:19,536 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 19:11:19,536 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 19:11:19,537 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 19:11:19,537 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 19:11:19,537 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 19:11:19,537 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 19:11:19,537 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 19:11:19,538 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 19:11:19,538 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 19:11:19,538 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 19:11:19,538 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 19:11:19,538 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 19:11:19,538 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 19:11:19,539 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 19:11:19,539 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 19:11:19,539 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 19:11:19,603 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 19:11:19,620 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 19:11:19,624 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 19:11:19,626 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 19:11:19,627 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 19:11:19,628 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label06_true-unreach-call_false-termination.c [2018-10-24 19:11:19,706 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/08c3d2dfa/e5fe82772f6742f5a4f4fcb9facebf6c/FLAGfcafecde8 [2018-10-24 19:11:20,310 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 19:11:20,311 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label06_true-unreach-call_false-termination.c [2018-10-24 19:11:20,336 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/08c3d2dfa/e5fe82772f6742f5a4f4fcb9facebf6c/FLAGfcafecde8 [2018-10-24 19:11:20,352 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/08c3d2dfa/e5fe82772f6742f5a4f4fcb9facebf6c [2018-10-24 19:11:20,364 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 19:11:20,366 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 19:11:20,367 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 19:11:20,367 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 19:11:20,371 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 19:11:20,371 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:11:20" (1/1) ... [2018-10-24 19:11:20,375 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72305746 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:11:20, skipping insertion in model container [2018-10-24 19:11:20,375 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:11:20" (1/1) ... [2018-10-24 19:11:20,384 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 19:11:20,457 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 19:11:21,001 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 19:11:21,006 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 19:11:21,145 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 19:11:21,165 INFO L193 MainTranslator]: Completed translation [2018-10-24 19:11:21,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:11:21 WrapperNode [2018-10-24 19:11:21,166 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 19:11:21,167 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 19:11:21,167 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 19:11:21,167 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 19:11:21,177 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:11:21" (1/1) ... [2018-10-24 19:11:21,210 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:11:21" (1/1) ... [2018-10-24 19:11:21,389 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 19:11:21,389 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 19:11:21,389 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 19:11:21,390 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 19:11:21,401 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:11:21" (1/1) ... [2018-10-24 19:11:21,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:11:21" (1/1) ... [2018-10-24 19:11:21,416 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:11:21" (1/1) ... [2018-10-24 19:11:21,416 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:11:21" (1/1) ... [2018-10-24 19:11:21,455 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:11:21" (1/1) ... [2018-10-24 19:11:21,480 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:11:21" (1/1) ... [2018-10-24 19:11:21,489 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:11:21" (1/1) ... [2018-10-24 19:11:21,498 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 19:11:21,498 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 19:11:21,498 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 19:11:21,499 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 19:11:21,500 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:11:21" (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 [2018-10-24 19:11:21,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 19:11:21,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 19:11:21,580 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 19:11:21,580 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 19:11:21,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 19:11:21,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 19:11:21,581 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 19:11:21,581 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 19:11:24,620 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 19:11:24,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:11:24 BoogieIcfgContainer [2018-10-24 19:11:24,626 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 19:11:24,627 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 19:11:24,627 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 19:11:24,631 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 19:11:24,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 07:11:20" (1/3) ... [2018-10-24 19:11:24,632 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51636413 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:11:24, skipping insertion in model container [2018-10-24 19:11:24,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:11:21" (2/3) ... [2018-10-24 19:11:24,633 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51636413 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:11:24, skipping insertion in model container [2018-10-24 19:11:24,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:11:24" (3/3) ... [2018-10-24 19:11:24,636 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem01_label06_true-unreach-call_false-termination.c [2018-10-24 19:11:24,647 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 19:11:24,662 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 19:11:24,682 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 19:11:24,735 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 19:11:24,735 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 19:11:24,735 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 19:11:24,735 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 19:11:24,736 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 19:11:24,736 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 19:11:24,736 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 19:11:24,736 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 19:11:24,775 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states. [2018-10-24 19:11:24,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-10-24 19:11:24,798 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:11:24,799 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:11:24,803 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:11:24,812 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:11:24,812 INFO L82 PathProgramCache]: Analyzing trace with hash 482475453, now seen corresponding path program 1 times [2018-10-24 19:11:24,815 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:11:24,879 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:11:24,880 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:11:24,880 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:11:24,880 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:11:25,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:11:25,525 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 19:11:25,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:11:25,663 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:11:25,664 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 19:11:25,664 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:11:25,670 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 19:11:25,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 19:11:25,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 19:11:25,693 INFO L87 Difference]: Start difference. First operand 208 states. Second operand 3 states. [2018-10-24 19:11:27,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:11:27,125 INFO L93 Difference]: Finished difference Result 550 states and 941 transitions. [2018-10-24 19:11:27,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 19:11:27,127 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 131 [2018-10-24 19:11:27,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:11:27,146 INFO L225 Difference]: With dead ends: 550 [2018-10-24 19:11:27,147 INFO L226 Difference]: Without dead ends: 340 [2018-10-24 19:11:27,154 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 19:11:27,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2018-10-24 19:11:27,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 340. [2018-10-24 19:11:27,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2018-10-24 19:11:27,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 541 transitions. [2018-10-24 19:11:27,237 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 541 transitions. Word has length 131 [2018-10-24 19:11:27,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:11:27,238 INFO L481 AbstractCegarLoop]: Abstraction has 340 states and 541 transitions. [2018-10-24 19:11:27,238 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 19:11:27,238 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 541 transitions. [2018-10-24 19:11:27,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-10-24 19:11:27,248 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:11:27,248 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:11:27,249 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:11:27,249 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:11:27,249 INFO L82 PathProgramCache]: Analyzing trace with hash -359292034, now seen corresponding path program 1 times [2018-10-24 19:11:27,249 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:11:27,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:11:27,251 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:11:27,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:11:27,251 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:11:27,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:11:27,531 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 19:11:27,861 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:11:27,862 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:11:27,862 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 19:11:27,862 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:11:27,864 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 19:11:27,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 19:11:27,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 19:11:27,865 INFO L87 Difference]: Start difference. First operand 340 states and 541 transitions. Second operand 6 states. [2018-10-24 19:11:29,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:11:29,803 INFO L93 Difference]: Finished difference Result 1075 states and 1784 transitions. [2018-10-24 19:11:29,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 19:11:29,806 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 142 [2018-10-24 19:11:29,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:11:29,816 INFO L225 Difference]: With dead ends: 1075 [2018-10-24 19:11:29,816 INFO L226 Difference]: Without dead ends: 741 [2018-10-24 19:11:29,821 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 19:11:29,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2018-10-24 19:11:29,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 724. [2018-10-24 19:11:29,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 724 states. [2018-10-24 19:11:29,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 1120 transitions. [2018-10-24 19:11:29,876 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 1120 transitions. Word has length 142 [2018-10-24 19:11:29,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:11:29,876 INFO L481 AbstractCegarLoop]: Abstraction has 724 states and 1120 transitions. [2018-10-24 19:11:29,877 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 19:11:29,877 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 1120 transitions. [2018-10-24 19:11:29,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-10-24 19:11:29,883 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:11:29,884 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:11:29,884 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:11:29,884 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:11:29,884 INFO L82 PathProgramCache]: Analyzing trace with hash -879449942, now seen corresponding path program 1 times [2018-10-24 19:11:29,885 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:11:29,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:11:29,886 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:11:29,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:11:29,886 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:11:29,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:11:30,270 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-10-24 19:11:30,398 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:11:30,399 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:11:30,399 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 19:11:30,399 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:11:30,400 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 19:11:30,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 19:11:30,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 19:11:30,401 INFO L87 Difference]: Start difference. First operand 724 states and 1120 transitions. Second operand 5 states. [2018-10-24 19:11:32,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:11:32,475 INFO L93 Difference]: Finished difference Result 1578 states and 2483 transitions. [2018-10-24 19:11:32,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 19:11:32,476 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2018-10-24 19:11:32,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:11:32,484 INFO L225 Difference]: With dead ends: 1578 [2018-10-24 19:11:32,484 INFO L226 Difference]: Without dead ends: 721 [2018-10-24 19:11:32,489 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 19:11:32,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2018-10-24 19:11:32,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 721. [2018-10-24 19:11:32,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 721 states. [2018-10-24 19:11:32,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 1044 transitions. [2018-10-24 19:11:32,533 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 1044 transitions. Word has length 143 [2018-10-24 19:11:32,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:11:32,534 INFO L481 AbstractCegarLoop]: Abstraction has 721 states and 1044 transitions. [2018-10-24 19:11:32,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 19:11:32,534 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 1044 transitions. [2018-10-24 19:11:32,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-10-24 19:11:32,538 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:11:32,539 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:11:32,539 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:11:32,539 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:11:32,540 INFO L82 PathProgramCache]: Analyzing trace with hash 353210034, now seen corresponding path program 1 times [2018-10-24 19:11:32,540 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:11:32,541 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:11:32,541 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:11:32,541 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:11:32,541 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:11:32,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:11:32,773 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:11:32,774 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:11:32,774 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 19:11:32,774 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:11:32,775 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 19:11:32,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 19:11:32,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 19:11:32,776 INFO L87 Difference]: Start difference. First operand 721 states and 1044 transitions. Second operand 3 states. [2018-10-24 19:11:34,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:11:34,168 INFO L93 Difference]: Finished difference Result 1871 states and 2749 transitions. [2018-10-24 19:11:34,179 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 19:11:34,179 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2018-10-24 19:11:34,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:11:34,189 INFO L225 Difference]: With dead ends: 1871 [2018-10-24 19:11:34,189 INFO L226 Difference]: Without dead ends: 1156 [2018-10-24 19:11:34,193 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 19:11:34,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1156 states. [2018-10-24 19:11:34,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1156 to 1153. [2018-10-24 19:11:34,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1153 states. [2018-10-24 19:11:34,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 1553 transitions. [2018-10-24 19:11:34,239 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 1553 transitions. Word has length 147 [2018-10-24 19:11:34,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:11:34,240 INFO L481 AbstractCegarLoop]: Abstraction has 1153 states and 1553 transitions. [2018-10-24 19:11:34,240 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 19:11:34,240 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 1553 transitions. [2018-10-24 19:11:34,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-10-24 19:11:34,247 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:11:34,248 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:11:34,248 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:11:34,248 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:11:34,248 INFO L82 PathProgramCache]: Analyzing trace with hash -2123069123, now seen corresponding path program 1 times [2018-10-24 19:11:34,249 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:11:34,249 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:11:34,250 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:11:34,250 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:11:34,250 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:11:34,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:11:34,452 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-10-24 19:11:34,452 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:11:34,453 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 19:11:34,453 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:11:34,453 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 19:11:34,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 19:11:34,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 19:11:34,454 INFO L87 Difference]: Start difference. First operand 1153 states and 1553 transitions. Second operand 4 states. [2018-10-24 19:11:35,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:11:35,633 INFO L93 Difference]: Finished difference Result 3973 states and 5595 transitions. [2018-10-24 19:11:35,637 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 19:11:35,637 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 168 [2018-10-24 19:11:35,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:11:35,655 INFO L225 Difference]: With dead ends: 3973 [2018-10-24 19:11:35,655 INFO L226 Difference]: Without dead ends: 2826 [2018-10-24 19:11:35,664 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 19:11:35,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2826 states. [2018-10-24 19:11:35,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2826 to 2796. [2018-10-24 19:11:35,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2796 states. [2018-10-24 19:11:35,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2796 states to 2796 states and 3650 transitions. [2018-10-24 19:11:35,750 INFO L78 Accepts]: Start accepts. Automaton has 2796 states and 3650 transitions. Word has length 168 [2018-10-24 19:11:35,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:11:35,750 INFO L481 AbstractCegarLoop]: Abstraction has 2796 states and 3650 transitions. [2018-10-24 19:11:35,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 19:11:35,751 INFO L276 IsEmpty]: Start isEmpty. Operand 2796 states and 3650 transitions. [2018-10-24 19:11:35,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2018-10-24 19:11:35,762 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:11:35,763 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:11:35,763 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:11:35,763 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:11:35,763 INFO L82 PathProgramCache]: Analyzing trace with hash -813161529, now seen corresponding path program 1 times [2018-10-24 19:11:35,764 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:11:35,764 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:11:35,765 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:11:35,765 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:11:35,765 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:11:35,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:11:36,250 WARN L179 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-24 19:11:36,417 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 56 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:11:36,417 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 19:11:36,418 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 19:11:36,419 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 180 with the following transitions: [2018-10-24 19:11:36,422 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [30], [33], [34], [38], [42], [46], [50], [54], [58], [62], [66], [70], [74], [78], [82], [86], [90], [94], [97], [98], [102], [106], [110], [114], [118], [122], [126], [130], [134], [138], [142], [146], [150], [154], [158], [162], [166], [170], [174], [178], [182], [186], [190], [194], [198], [202], [206], [210], [214], [218], [222], [226], [230], [234], [238], [242], [246], [250], [254], [258], [262], [266], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [537], [545], [553], [561], [569], [577], [585], [593], [601], [609], [617], [625], [633], [641], [649], [657], [665], [673], [681], [685], [687], [757], [761], [765], [771], [775], [777], [782], [783], [784], [786], [787] [2018-10-24 19:11:36,521 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 19:11:36,522 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 19:11:45,791 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 19:11:45,792 INFO L272 AbstractInterpreter]: Visited 69 different actions 69 times. Never merged. Never widened. Never found a fixpoint. Largest state had 42 variables. [2018-10-24 19:11:45,803 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:11:45,803 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 19:11:48,795 INFO L232 lantSequenceWeakener]: Weakened 108 states. On average, predicates are now at 79.83% of their original sizes. [2018-10-24 19:11:48,795 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 19:11:49,820 INFO L413 sIntCurrentIteration]: We have 178 unified AI predicates [2018-10-24 19:11:49,820 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 19:11:49,821 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 19:11:49,821 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [6] total 16 [2018-10-24 19:11:49,821 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:11:49,822 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-24 19:11:49,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-24 19:11:49,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2018-10-24 19:11:49,823 INFO L87 Difference]: Start difference. First operand 2796 states and 3650 transitions. Second operand 12 states. [2018-10-24 19:12:04,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:12:04,378 INFO L93 Difference]: Finished difference Result 5647 states and 7380 transitions. [2018-10-24 19:12:04,378 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-24 19:12:04,378 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 179 [2018-10-24 19:12:04,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:12:04,396 INFO L225 Difference]: With dead ends: 5647 [2018-10-24 19:12:04,396 INFO L226 Difference]: Without dead ends: 2857 [2018-10-24 19:12:04,408 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 184 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=106, Invalid=200, Unknown=0, NotChecked=0, Total=306 [2018-10-24 19:12:04,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2857 states. [2018-10-24 19:12:04,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2857 to 2857. [2018-10-24 19:12:04,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2857 states. [2018-10-24 19:12:04,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2857 states to 2857 states and 3716 transitions. [2018-10-24 19:12:04,510 INFO L78 Accepts]: Start accepts. Automaton has 2857 states and 3716 transitions. Word has length 179 [2018-10-24 19:12:04,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:12:04,511 INFO L481 AbstractCegarLoop]: Abstraction has 2857 states and 3716 transitions. [2018-10-24 19:12:04,511 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-24 19:12:04,511 INFO L276 IsEmpty]: Start isEmpty. Operand 2857 states and 3716 transitions. [2018-10-24 19:12:04,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-10-24 19:12:04,523 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:12:04,524 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:12:04,524 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:12:04,524 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:12:04,526 INFO L82 PathProgramCache]: Analyzing trace with hash -1518221820, now seen corresponding path program 1 times [2018-10-24 19:12:04,527 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:12:04,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:12:04,528 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:12:04,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:12:04,528 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:12:04,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:12:04,904 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 60 proven. 15 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-24 19:12:04,905 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 19:12:04,905 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 19:12:04,905 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 189 with the following transitions: [2018-10-24 19:12:04,905 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [6], [10], [14], [18], [22], [26], [30], [33], [34], [38], [42], [46], [50], [54], [58], [62], [66], [70], [74], [78], [82], [86], [90], [94], [97], [98], [102], [106], [110], [114], [118], [122], [126], [130], [134], [138], [142], [146], [150], [154], [158], [162], [166], [170], [174], [178], [182], [186], [190], [194], [198], [202], [206], [210], [214], [218], [222], [226], [230], [234], [238], [242], [246], [250], [254], [258], [262], [266], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [537], [545], [553], [561], [569], [577], [585], [593], [601], [609], [617], [625], [633], [641], [649], [657], [665], [673], [681], [685], [687], [757], [761], [765], [771], [775], [777], [782], [783], [784], [786], [787] [2018-10-24 19:12:04,912 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 19:12:04,912 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 19:12:29,003 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 19:12:29,004 INFO L272 AbstractInterpreter]: Visited 136 different actions 203 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 42 variables. [2018-10-24 19:12:29,013 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:12:29,013 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 19:12:33,608 INFO L232 lantSequenceWeakener]: Weakened 180 states. On average, predicates are now at 80.66% of their original sizes. [2018-10-24 19:12:33,609 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 19:12:55,626 INFO L413 sIntCurrentIteration]: We have 187 unified AI predicates [2018-10-24 19:12:55,626 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 19:12:55,627 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 19:12:55,627 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [6] total 22 [2018-10-24 19:12:55,627 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:12:55,627 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-24 19:12:55,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-24 19:12:55,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2018-10-24 19:12:55,628 INFO L87 Difference]: Start difference. First operand 2857 states and 3716 transitions. Second operand 18 states. [2018-10-24 19:13:40,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:13:40,197 INFO L93 Difference]: Finished difference Result 5792 states and 7546 transitions. [2018-10-24 19:13:40,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-24 19:13:40,197 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 188 [2018-10-24 19:13:40,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:13:40,215 INFO L225 Difference]: With dead ends: 5792 [2018-10-24 19:13:40,215 INFO L226 Difference]: Without dead ends: 3002 [2018-10-24 19:13:40,228 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 202 GetRequests, 70 SyntacticMatches, 101 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1237 ImplicationChecksByTransitivity, 26.3s TimeCoverageRelationStatistics Valid=223, Invalid=833, Unknown=0, NotChecked=0, Total=1056 [2018-10-24 19:13:40,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3002 states. [2018-10-24 19:13:40,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3002 to 2995. [2018-10-24 19:13:40,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2995 states. [2018-10-24 19:13:40,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2995 states to 2995 states and 3864 transitions. [2018-10-24 19:13:40,315 INFO L78 Accepts]: Start accepts. Automaton has 2995 states and 3864 transitions. Word has length 188 [2018-10-24 19:13:40,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:13:40,315 INFO L481 AbstractCegarLoop]: Abstraction has 2995 states and 3864 transitions. [2018-10-24 19:13:40,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-24 19:13:40,316 INFO L276 IsEmpty]: Start isEmpty. Operand 2995 states and 3864 transitions. [2018-10-24 19:13:40,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2018-10-24 19:13:40,328 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:13:40,329 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:13:40,329 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:13:40,329 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:13:40,330 INFO L82 PathProgramCache]: Analyzing trace with hash 241118704, now seen corresponding path program 1 times [2018-10-24 19:13:40,330 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:13:40,331 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:13:40,331 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:13:40,331 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:13:40,331 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:13:40,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:13:40,539 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 100 proven. 15 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-10-24 19:13:40,540 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 19:13:40,540 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 19:13:40,540 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 222 with the following transitions: [2018-10-24 19:13:40,541 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [30], [33], [34], [38], [42], [46], [50], [54], [58], [62], [66], [70], [74], [78], [82], [86], [90], [94], [97], [98], [102], [106], [110], [114], [118], [122], [126], [130], [134], [137], [138], [142], [146], [150], [154], [158], [162], [166], [170], [174], [178], [182], [186], [190], [194], [198], [202], [206], [210], [214], [218], [222], [226], [230], [234], [238], [242], [246], [250], [254], [258], [262], [266], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [537], [545], [553], [561], [569], [577], [585], [593], [601], [609], [617], [625], [633], [641], [649], [657], [665], [673], [681], [685], [687], [757], [761], [765], [771], [775], [777], [782], [783], [784], [786], [787] [2018-10-24 19:13:40,546 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 19:13:40,547 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 19:14:19,739 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 19:14:19,739 INFO L272 AbstractInterpreter]: Visited 136 different actions 203 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 42 variables. [2018-10-24 19:14:19,749 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:14:19,749 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 19:14:27,074 INFO L232 lantSequenceWeakener]: Weakened 102 states. On average, predicates are now at 81.5% of their original sizes. [2018-10-24 19:14:27,074 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 19:15:21,805 INFO L413 sIntCurrentIteration]: We have 220 unified AI predicates [2018-10-24 19:15:21,805 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 19:15:21,805 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 19:15:21,806 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [26] imperfect sequences [6] total 30 [2018-10-24 19:15:21,806 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:15:21,807 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-24 19:15:21,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-24 19:15:21,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=500, Unknown=0, NotChecked=0, Total=650 [2018-10-24 19:15:21,808 INFO L87 Difference]: Start difference. First operand 2995 states and 3864 transitions. Second operand 26 states. Received shutdown request... [2018-10-24 19:15:37,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 19:15:37,359 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 19:15:37,364 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 19:15:37,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 07:15:37 BoogieIcfgContainer [2018-10-24 19:15:37,365 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 19:15:37,366 INFO L168 Benchmark]: Toolchain (without parser) took 257001.21 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -803.3 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-10-24 19:15:37,368 INFO L168 Benchmark]: CDTParser took 0.30 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. [2018-10-24 19:15:37,368 INFO L168 Benchmark]: CACSL2BoogieTranslator took 799.11 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-10-24 19:15:37,370 INFO L168 Benchmark]: Boogie Procedure Inliner took 222.52 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 737.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -826.7 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. [2018-10-24 19:15:37,370 INFO L168 Benchmark]: Boogie Preprocessor took 108.62 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 19:15:37,371 INFO L168 Benchmark]: RCFGBuilder took 3127.63 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 104.3 MB). Peak memory consumption was 104.3 MB. Max. memory is 7.1 GB. [2018-10-24 19:15:37,374 INFO L168 Benchmark]: TraceAbstraction took 252738.24 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.6 GB). Free memory was 2.1 GB in the beginning and 2.2 GB in the end (delta: -112.7 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-10-24 19:15:37,381 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 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 799.11 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 222.52 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 737.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -826.7 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 108.62 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3127.63 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 104.3 MB). Peak memory consumption was 104.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 252738.24 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.6 GB). Free memory was 2.1 GB in the beginning and 2.2 GB in the end (delta: -112.7 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 548]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 548). Cancelled while BasicCegarLoop was constructing difference of abstraction (2995states) and FLOYD_HOARE automaton (currently 10 states, 26 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 32 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 208 locations, 1 error locations. TIMEOUT Result, 252.6s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 82.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 941 SDtfs, 2578 SDslu, 873 SDs, 0 SdLazy, 4282 SolverSat, 789 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 20.6s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 646 GetRequests, 441 SyntacticMatches, 113 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1596 ImplicationChecksByTransitivity, 86.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2995occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 72.7s AbstIntTime, 3 AbstIntIterations, 3 AbstIntStrong, 0.9951318780587084 AbsIntWeakeningRatio, 0.2 AbsIntAvgWeakeningVarsNumRemoved, 1495.263247863248 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 7 MinimizatonAttempts, 57 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 1319 NumberOfCodeBlocks, 1319 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1311 ConstructedInterpolants, 0 QuantifiedInterpolants, 821010 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 330/362 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown