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/Problem16_label40_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 03:24:07,397 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 03:24:07,400 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 03:24:07,412 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 03:24:07,412 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 03:24:07,413 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 03:24:07,414 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 03:24:07,416 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 03:24:07,418 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 03:24:07,419 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 03:24:07,423 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 03:24:07,423 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 03:24:07,424 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 03:24:07,425 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 03:24:07,426 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 03:24:07,429 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 03:24:07,430 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 03:24:07,433 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 03:24:07,439 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 03:24:07,444 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 03:24:07,446 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 03:24:07,447 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 03:24:07,449 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 03:24:07,449 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 03:24:07,449 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 03:24:07,450 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 03:24:07,451 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 03:24:07,452 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 03:24:07,453 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 03:24:07,454 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 03:24:07,454 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 03:24:07,455 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 03:24:07,455 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 03:24:07,455 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 03:24:07,456 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 03:24:07,457 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 03:24:07,457 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 [2018-10-27 03:24:07,472 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 03:24:07,473 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 03:24:07,473 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 03:24:07,474 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 03:24:07,474 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 03:24:07,474 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 03:24:07,474 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 03:24:07,474 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 03:24:07,475 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 03:24:07,475 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 03:24:07,475 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 03:24:07,475 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 03:24:07,476 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 03:24:07,476 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 03:24:07,476 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 03:24:07,476 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 03:24:07,476 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 03:24:07,477 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 03:24:07,477 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 03:24:07,477 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 03:24:07,477 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 03:24:07,477 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 03:24:07,478 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 03:24:07,478 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 03:24:07,478 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 03:24:07,478 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 03:24:07,479 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 03:24:07,479 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 03:24:07,479 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 03:24:07,479 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 03:24:07,479 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 03:24:07,479 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 03:24:07,480 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 03:24:07,480 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 03:24:07,522 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 03:24:07,535 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 03:24:07,538 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 03:24:07,539 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 03:24:07,540 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 03:24:07,540 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label40_true-unreach-call.c [2018-10-27 03:24:07,599 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d9e94b9ba/840a4857b377459ba9b9d46ec8595a09/FLAG1e473b981 [2018-10-27 03:24:08,236 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 03:24:08,237 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label40_true-unreach-call.c [2018-10-27 03:24:08,258 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d9e94b9ba/840a4857b377459ba9b9d46ec8595a09/FLAG1e473b981 [2018-10-27 03:24:08,277 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d9e94b9ba/840a4857b377459ba9b9d46ec8595a09 [2018-10-27 03:24:08,287 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 03:24:08,288 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 03:24:08,289 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 03:24:08,290 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 03:24:08,294 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 03:24:08,295 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:24:08" (1/1) ... [2018-10-27 03:24:08,298 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59a693f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:24:08, skipping insertion in model container [2018-10-27 03:24:08,298 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:24:08" (1/1) ... [2018-10-27 03:24:08,308 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 03:24:08,412 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 03:24:09,180 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 03:24:09,185 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 03:24:09,457 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 03:24:09,480 INFO L193 MainTranslator]: Completed translation [2018-10-27 03:24:09,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:24:09 WrapperNode [2018-10-27 03:24:09,481 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 03:24:09,482 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 03:24:09,483 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 03:24:09,483 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 03:24:09,494 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:24:09" (1/1) ... [2018-10-27 03:24:09,542 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:24:09" (1/1) ... [2018-10-27 03:24:09,800 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 03:24:09,801 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 03:24:09,801 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 03:24:09,801 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 03:24:09,813 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:24:09" (1/1) ... [2018-10-27 03:24:09,813 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:24:09" (1/1) ... [2018-10-27 03:24:09,824 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:24:09" (1/1) ... [2018-10-27 03:24:09,824 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:24:09" (1/1) ... [2018-10-27 03:24:09,877 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:24:09" (1/1) ... [2018-10-27 03:24:09,912 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:24:09" (1/1) ... [2018-10-27 03:24:09,934 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:24:09" (1/1) ... [2018-10-27 03:24:09,948 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 03:24:09,949 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 03:24:09,949 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 03:24:09,949 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 03:24:09,952 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:24:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 03:24:10,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 03:24:10,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 03:24:10,023 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 03:24:10,024 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 03:24:10,024 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 03:24:10,024 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 03:24:10,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 03:24:10,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 03:24:10,025 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 03:24:10,025 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 03:24:16,252 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 03:24:16,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:24:16 BoogieIcfgContainer [2018-10-27 03:24:16,254 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 03:24:16,255 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 03:24:16,255 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 03:24:16,260 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 03:24:16,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 03:24:08" (1/3) ... [2018-10-27 03:24:16,261 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@365a976e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:24:16, skipping insertion in model container [2018-10-27 03:24:16,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:24:09" (2/3) ... [2018-10-27 03:24:16,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@365a976e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:24:16, skipping insertion in model container [2018-10-27 03:24:16,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:24:16" (3/3) ... [2018-10-27 03:24:16,264 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label40_true-unreach-call.c [2018-10-27 03:24:16,273 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 03:24:16,280 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 03:24:16,297 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 03:24:16,339 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 03:24:16,339 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 03:24:16,340 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 03:24:16,340 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 03:24:16,340 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 03:24:16,340 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 03:24:16,340 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 03:24:16,340 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 03:24:16,373 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-10-27 03:24:16,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-10-27 03:24:16,384 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:24:16,386 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] [2018-10-27 03:24:16,388 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:24:16,394 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:24:16,395 INFO L82 PathProgramCache]: Analyzing trace with hash 2071799652, now seen corresponding path program 1 times [2018-10-27 03:24:16,398 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:24:16,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:24:16,455 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:24:16,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:24:16,456 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:24:16,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:24:16,968 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 03:24:17,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:24:17,145 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:24:17,146 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 03:24:17,146 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:24:17,152 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 03:24:17,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 03:24:17,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 03:24:17,169 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-10-27 03:24:21,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:24:21,665 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-10-27 03:24:21,666 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 03:24:21,667 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 70 [2018-10-27 03:24:21,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:24:21,693 INFO L225 Difference]: With dead ends: 1156 [2018-10-27 03:24:21,693 INFO L226 Difference]: Without dead ends: 744 [2018-10-27 03:24:21,703 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 03:24:21,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-10-27 03:24:21,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-10-27 03:24:21,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-10-27 03:24:21,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1353 transitions. [2018-10-27 03:24:21,828 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1353 transitions. Word has length 70 [2018-10-27 03:24:21,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:24:21,829 INFO L481 AbstractCegarLoop]: Abstraction has 744 states and 1353 transitions. [2018-10-27 03:24:21,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 03:24:21,831 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1353 transitions. [2018-10-27 03:24:21,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2018-10-27 03:24:21,853 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:24:21,854 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 03:24:21,854 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:24:21,854 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:24:21,855 INFO L82 PathProgramCache]: Analyzing trace with hash -3052801, now seen corresponding path program 1 times [2018-10-27 03:24:21,855 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:24:21,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:24:21,858 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:24:21,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:24:21,859 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:24:21,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:24:22,365 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:24:22,366 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:24:22,366 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 03:24:22,366 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:24:22,368 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 03:24:22,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 03:24:22,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 03:24:22,369 INFO L87 Difference]: Start difference. First operand 744 states and 1353 transitions. Second operand 6 states. [2018-10-27 03:24:30,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:24:30,116 INFO L93 Difference]: Finished difference Result 2184 states and 3997 transitions. [2018-10-27 03:24:30,123 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 03:24:30,123 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 163 [2018-10-27 03:24:30,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:24:30,138 INFO L225 Difference]: With dead ends: 2184 [2018-10-27 03:24:30,138 INFO L226 Difference]: Without dead ends: 1446 [2018-10-27 03:24:30,144 INFO L605 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 [2018-10-27 03:24:30,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1446 states. [2018-10-27 03:24:30,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1446 to 1425. [2018-10-27 03:24:30,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1425 states. [2018-10-27 03:24:30,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 2267 transitions. [2018-10-27 03:24:30,224 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 2267 transitions. Word has length 163 [2018-10-27 03:24:30,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:24:30,225 INFO L481 AbstractCegarLoop]: Abstraction has 1425 states and 2267 transitions. [2018-10-27 03:24:30,225 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 03:24:30,225 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 2267 transitions. [2018-10-27 03:24:30,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2018-10-27 03:24:30,237 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:24:30,237 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 03:24:30,237 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:24:30,238 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:24:30,238 INFO L82 PathProgramCache]: Analyzing trace with hash 277532168, now seen corresponding path program 1 times [2018-10-27 03:24:30,238 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:24:30,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:24:30,240 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:24:30,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:24:30,240 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:24:30,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:24:30,619 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 126 proven. 88 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 03:24:30,620 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 03:24:30,620 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 03:24:30,621 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 275 with the following transitions: [2018-10-27 03:24:30,623 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [579], [587], [595], [603], [611], [619], [627], [635], [639], [641], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [764], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-27 03:24:30,703 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 03:24:30,703 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 03:24:33,137 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 03:24:33,139 INFO L272 AbstractInterpreter]: Visited 116 different actions 116 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 03:24:33,157 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:24:33,157 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 03:24:35,554 INFO L227 lantSequenceWeakener]: Weakened 266 states. On average, predicates are now at 78.24% of their original sizes. [2018-10-27 03:24:35,554 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 03:24:36,041 INFO L415 sIntCurrentIteration]: We unified 273 AI predicates to 273 [2018-10-27 03:24:36,042 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 03:24:36,043 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 03:24:36,043 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-27 03:24:36,043 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:24:36,044 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-27 03:24:36,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-27 03:24:36,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-27 03:24:36,047 INFO L87 Difference]: Start difference. First operand 1425 states and 2267 transitions. Second operand 7 states. [2018-10-27 03:24:38,196 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 03:25:30,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:25:30,823 INFO L93 Difference]: Finished difference Result 3184 states and 5088 transitions. [2018-10-27 03:25:30,823 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 03:25:30,824 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 274 [2018-10-27 03:25:30,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:25:30,834 INFO L225 Difference]: With dead ends: 3184 [2018-10-27 03:25:30,834 INFO L226 Difference]: Without dead ends: 1765 [2018-10-27 03:25:30,838 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 274 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-27 03:25:30,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1765 states. [2018-10-27 03:25:30,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1765 to 1763. [2018-10-27 03:25:30,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1763 states. [2018-10-27 03:25:30,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1763 states to 1763 states and 2612 transitions. [2018-10-27 03:25:30,889 INFO L78 Accepts]: Start accepts. Automaton has 1763 states and 2612 transitions. Word has length 274 [2018-10-27 03:25:30,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:25:30,890 INFO L481 AbstractCegarLoop]: Abstraction has 1763 states and 2612 transitions. [2018-10-27 03:25:30,890 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-27 03:25:30,890 INFO L276 IsEmpty]: Start isEmpty. Operand 1763 states and 2612 transitions. [2018-10-27 03:25:30,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2018-10-27 03:25:30,896 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:25:30,897 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 03:25:30,897 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:25:30,897 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:25:30,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1833325270, now seen corresponding path program 1 times [2018-10-27 03:25:30,898 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:25:30,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:25:30,899 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:25:30,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:25:30,899 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:25:30,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:25:31,223 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 03:25:31,776 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 195 proven. 197 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-10-27 03:25:31,776 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 03:25:31,777 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 03:25:31,777 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 367 with the following transitions: [2018-10-27 03:25:31,777 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [579], [587], [595], [603], [611], [619], [627], [635], [639], [641], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [761], [764], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-27 03:25:31,783 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 03:25:31,784 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 03:25:33,815 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 03:25:41,445 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 03:25:41,445 INFO L272 AbstractInterpreter]: Visited 121 different actions 350 times. Merged at 5 different actions 10 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 03:25:41,455 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:25:41,456 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 03:25:41,456 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 03:25:41,456 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 03:25:41,466 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:25:41,466 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 03:25:41,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:25:41,605 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 03:25:42,040 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 400 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-10-27 03:25:42,041 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 03:25:42,801 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 284 proven. 92 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2018-10-27 03:25:42,823 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 03:25:42,823 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-10-27 03:25:42,824 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 03:25:42,825 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 03:25:42,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 03:25:42,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-10-27 03:25:42,826 INFO L87 Difference]: Start difference. First operand 1763 states and 2612 transitions. Second operand 9 states. [2018-10-27 03:25:47,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:25:47,821 INFO L93 Difference]: Finished difference Result 4237 states and 6745 transitions. [2018-10-27 03:25:47,822 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 03:25:47,822 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 366 [2018-10-27 03:25:47,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:25:47,838 INFO L225 Difference]: With dead ends: 4237 [2018-10-27 03:25:47,838 INFO L226 Difference]: Without dead ends: 2818 [2018-10-27 03:25:47,843 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 746 GetRequests, 731 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2018-10-27 03:25:47,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2818 states. [2018-10-27 03:25:47,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2818 to 2811. [2018-10-27 03:25:47,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2811 states. [2018-10-27 03:25:47,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2811 states to 2811 states and 4086 transitions. [2018-10-27 03:25:47,922 INFO L78 Accepts]: Start accepts. Automaton has 2811 states and 4086 transitions. Word has length 366 [2018-10-27 03:25:47,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:25:47,922 INFO L481 AbstractCegarLoop]: Abstraction has 2811 states and 4086 transitions. [2018-10-27 03:25:47,923 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 03:25:47,923 INFO L276 IsEmpty]: Start isEmpty. Operand 2811 states and 4086 transitions. [2018-10-27 03:25:47,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2018-10-27 03:25:47,935 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:25:47,936 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 03:25:47,936 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:25:47,936 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:25:47,937 INFO L82 PathProgramCache]: Analyzing trace with hash -1771475300, now seen corresponding path program 1 times [2018-10-27 03:25:47,937 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:25:47,938 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:25:47,938 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:25:47,938 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:25:47,938 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:25:47,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:25:48,590 INFO L134 CoverageAnalysis]: Checked inductivity of 825 backedges. 352 proven. 200 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2018-10-27 03:25:48,591 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 03:25:48,591 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 03:25:48,591 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 483 with the following transitions: [2018-10-27 03:25:48,592 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [579], [587], [595], [603], [611], [619], [627], [635], [639], [641], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [761], [764], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-27 03:25:48,598 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 03:25:48,598 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 03:25:51,412 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 03:25:59,661 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 03:25:59,662 INFO L272 AbstractInterpreter]: Visited 127 different actions 368 times. Merged at 5 different actions 10 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 03:25:59,667 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:25:59,667 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 03:25:59,667 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 03:25:59,667 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 03:25:59,674 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:25:59,675 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 03:25:59,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:25:59,806 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 03:25:59,980 INFO L134 CoverageAnalysis]: Checked inductivity of 825 backedges. 602 proven. 2 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2018-10-27 03:25:59,980 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 03:26:00,507 INFO L134 CoverageAnalysis]: Checked inductivity of 825 backedges. 352 proven. 200 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2018-10-27 03:26:00,543 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 03:26:00,543 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-10-27 03:26:00,544 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 03:26:00,545 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 03:26:00,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 03:26:00,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-10-27 03:26:00,549 INFO L87 Difference]: Start difference. First operand 2811 states and 4086 transitions. Second operand 9 states. [2018-10-27 03:26:00,988 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-10-27 03:26:15,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:26:15,428 INFO L93 Difference]: Finished difference Result 11140 states and 16845 transitions. [2018-10-27 03:26:15,428 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-10-27 03:26:15,428 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 482 [2018-10-27 03:26:15,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:26:15,468 INFO L225 Difference]: With dead ends: 11140 [2018-10-27 03:26:15,469 INFO L226 Difference]: Without dead ends: 7326 [2018-10-27 03:26:15,531 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1045 GetRequests, 997 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 708 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=515, Invalid=1837, Unknown=0, NotChecked=0, Total=2352 [2018-10-27 03:26:15,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7326 states. [2018-10-27 03:26:15,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7326 to 7029. [2018-10-27 03:26:15,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7029 states. [2018-10-27 03:26:15,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7029 states to 7029 states and 7964 transitions. [2018-10-27 03:26:15,743 INFO L78 Accepts]: Start accepts. Automaton has 7029 states and 7964 transitions. Word has length 482 [2018-10-27 03:26:15,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:26:15,743 INFO L481 AbstractCegarLoop]: Abstraction has 7029 states and 7964 transitions. [2018-10-27 03:26:15,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 03:26:15,744 INFO L276 IsEmpty]: Start isEmpty. Operand 7029 states and 7964 transitions. [2018-10-27 03:26:15,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 754 [2018-10-27 03:26:15,775 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:26:15,776 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 03:26:15,776 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:26:15,777 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:26:15,777 INFO L82 PathProgramCache]: Analyzing trace with hash -343805575, now seen corresponding path program 1 times [2018-10-27 03:26:15,777 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:26:15,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:26:15,778 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:26:15,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:26:15,778 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:26:15,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:26:16,514 WARN L179 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2018-10-27 03:26:17,411 INFO L134 CoverageAnalysis]: Checked inductivity of 1033 backedges. 367 proven. 345 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2018-10-27 03:26:17,412 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 03:26:17,412 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 03:26:17,412 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 754 with the following transitions: [2018-10-27 03:26:17,413 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [579], [587], [595], [603], [611], [619], [627], [635], [639], [641], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1256], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1352], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-27 03:26:17,421 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 03:26:17,421 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 03:26:21,024 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 03:26:30,826 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 03:26:30,826 INFO L272 AbstractInterpreter]: Visited 250 different actions 494 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 03:26:30,832 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:26:30,832 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 03:26:39,829 INFO L227 lantSequenceWeakener]: Weakened 308 states. On average, predicates are now at 78.19% of their original sizes. [2018-10-27 03:26:39,829 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 03:26:50,214 INFO L415 sIntCurrentIteration]: We unified 752 AI predicates to 752 [2018-10-27 03:26:50,214 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 03:26:50,214 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 03:26:50,214 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [8] total 25 [2018-10-27 03:26:50,215 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:26:50,216 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-27 03:26:50,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-27 03:26:50,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2018-10-27 03:26:50,217 INFO L87 Difference]: Start difference. First operand 7029 states and 7964 transitions. Second operand 19 states. Received shutdown request... [2018-10-27 03:27:59,160 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-27 03:27:59,161 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 03:27:59,166 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 03:27:59,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 03:27:59 BoogieIcfgContainer [2018-10-27 03:27:59,167 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 03:27:59,168 INFO L168 Benchmark]: Toolchain (without parser) took 230880.40 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 2.8 GB in the end (delta: -1.4 GB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-10-27 03:27:59,169 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 03:27:59,170 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1192.20 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-10-27 03:27:59,171 INFO L168 Benchmark]: Boogie Procedure Inliner took 318.50 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 745.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -857.1 MB). Peak memory consumption was 28.7 MB. Max. memory is 7.1 GB. [2018-10-27 03:27:59,172 INFO L168 Benchmark]: Boogie Preprocessor took 147.51 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2018-10-27 03:27:59,173 INFO L168 Benchmark]: RCFGBuilder took 6305.24 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 258.0 MB). Peak memory consumption was 258.0 MB. Max. memory is 7.1 GB. [2018-10-27 03:27:59,174 INFO L168 Benchmark]: TraceAbstraction took 222911.98 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 2.8 GB in the end (delta: -872.6 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-10-27 03:27:59,179 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 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 1192.20 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 318.50 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 745.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -857.1 MB). Peak memory consumption was 28.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 147.51 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6305.24 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 258.0 MB). Peak memory consumption was 258.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 222911.98 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 2.8 GB in the end (delta: -872.6 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 196]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 196). Cancelled while BasicCegarLoop was constructing difference of abstraction (7029states) and FLOYD_HOARE automaton (currently 10 states, 19 states before enhancement),while ReachableStatesComputation was computing reachable states (223 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 222.8s OverallTime, 6 OverallIterations, 5 TraceHistogramMax, 156.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 942 SDtfs, 11067 SDslu, 1248 SDs, 0 SdLazy, 18563 SolverSat, 4939 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 78.3s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 2838 GetRequests, 2735 SyntacticMatches, 7 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 836 ImplicationChecksByTransitivity, 13.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7029occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 36.7s AbstIntTime, 4 AbstIntIterations, 2 AbstIntStrong, 0.9973665606221278 AbsIntWeakeningRatio, 0.0624390243902439 AbsIntAvgWeakeningVarsNumRemoved, 248.88780487804877 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 5 MinimizatonAttempts, 327 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.8s InterpolantComputationTime, 2956 NumberOfCodeBlocks, 2956 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 3794 ConstructedInterpolants, 0 QuantifiedInterpolants, 6745506 SizeOfPredicates, 2 NumberOfNonLiveVariables, 1349 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 10 InterpolantComputations, 2 PerfectInterpolantSequences, 4062/5188 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown