java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label40_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-25 01:31:40,235 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-25 01:31:40,238 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-25 01:31:40,254 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-25 01:31:40,256 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-25 01:31:40,257 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-25 01:31:40,261 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-25 01:31:40,264 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-25 01:31:40,268 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-25 01:31:40,270 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-25 01:31:40,273 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-25 01:31:40,273 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-25 01:31:40,274 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-25 01:31:40,276 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-25 01:31:40,283 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-25 01:31:40,284 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-25 01:31:40,288 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-25 01:31:40,292 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-25 01:31:40,297 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-25 01:31:40,299 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-25 01:31:40,300 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-25 01:31:40,302 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-25 01:31:40,308 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-25 01:31:40,308 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-25 01:31:40,308 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-25 01:31:40,310 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-25 01:31:40,311 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-25 01:31:40,313 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-25 01:31:40,313 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-25 01:31:40,316 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-25 01:31:40,316 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-25 01:31:40,317 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-25 01:31:40,318 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-25 01:31:40,318 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-25 01:31:40,319 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-25 01:31:40,319 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-25 01:31:40,320 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-25 01:31:40,347 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-25 01:31:40,348 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-25 01:31:40,349 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-25 01:31:40,349 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-25 01:31:40,349 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-25 01:31:40,349 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-25 01:31:40,349 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-25 01:31:40,350 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-25 01:31:40,350 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-25 01:31:40,350 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-25 01:31:40,351 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-25 01:31:40,351 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-25 01:31:40,351 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-25 01:31:40,351 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-25 01:31:40,352 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-25 01:31:40,352 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-25 01:31:40,352 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-25 01:31:40,352 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-25 01:31:40,353 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-25 01:31:40,356 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-25 01:31:40,356 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-25 01:31:40,356 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-25 01:31:40,356 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-25 01:31:40,357 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-25 01:31:40,357 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-25 01:31:40,357 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-25 01:31:40,357 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-25 01:31:40,358 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-25 01:31:40,358 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-25 01:31:40,358 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-25 01:31:40,358 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-25 01:31:40,359 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-25 01:31:40,359 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-25 01:31:40,359 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-25 01:31:40,359 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-25 01:31:40,359 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-25 01:31:40,409 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-25 01:31:40,426 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-25 01:31:40,431 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-25 01:31:40,432 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-25 01:31:40,433 INFO L276 PluginConnector]: CDTParser initialized [2018-10-25 01:31:40,434 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label40_true-unreach-call.c [2018-10-25 01:31:40,494 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0f1ad3b2a/995ff3c04b5e423a85e0075e4b681485/FLAG1a0e7adc2 [2018-10-25 01:31:41,061 INFO L298 CDTParser]: Found 1 translation units. [2018-10-25 01:31:41,062 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label40_true-unreach-call.c [2018-10-25 01:31:41,078 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0f1ad3b2a/995ff3c04b5e423a85e0075e4b681485/FLAG1a0e7adc2 [2018-10-25 01:31:41,094 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0f1ad3b2a/995ff3c04b5e423a85e0075e4b681485 [2018-10-25 01:31:41,109 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-25 01:31:41,111 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-25 01:31:41,113 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-25 01:31:41,113 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-25 01:31:41,117 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-25 01:31:41,118 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 01:31:41" (1/1) ... [2018-10-25 01:31:41,121 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d08a6c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:31:41, skipping insertion in model container [2018-10-25 01:31:41,121 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 01:31:41" (1/1) ... [2018-10-25 01:31:41,133 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-25 01:31:41,205 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-25 01:31:41,772 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 01:31:41,776 INFO L189 MainTranslator]: Completed pre-run [2018-10-25 01:31:42,045 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 01:31:42,066 INFO L193 MainTranslator]: Completed translation [2018-10-25 01:31:42,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:31:42 WrapperNode [2018-10-25 01:31:42,067 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-25 01:31:42,068 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-25 01:31:42,068 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-25 01:31:42,068 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-25 01:31:42,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:31:42" (1/1) ... [2018-10-25 01:31:42,114 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:31:42" (1/1) ... [2018-10-25 01:31:42,361 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-25 01:31:42,362 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-25 01:31:42,362 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-25 01:31:42,362 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-25 01:31:42,374 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:31:42" (1/1) ... [2018-10-25 01:31:42,374 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:31:42" (1/1) ... [2018-10-25 01:31:42,384 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:31:42" (1/1) ... [2018-10-25 01:31:42,385 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:31:42" (1/1) ... [2018-10-25 01:31:42,439 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:31:42" (1/1) ... [2018-10-25 01:31:42,452 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:31:42" (1/1) ... [2018-10-25 01:31:42,488 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:31:42" (1/1) ... [2018-10-25 01:31:42,510 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-25 01:31:42,511 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-25 01:31:42,511 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-25 01:31:42,511 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-25 01:31:42,512 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:31:42" (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 [2018-10-25 01:31:42,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-25 01:31:42,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-25 01:31:42,583 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-25 01:31:42,584 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-25 01:31:42,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-25 01:31:42,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-25 01:31:42,585 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-25 01:31:42,585 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-25 01:31:47,586 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-25 01:31:47,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 01:31:47 BoogieIcfgContainer [2018-10-25 01:31:47,590 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-25 01:31:47,591 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-25 01:31:47,592 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-25 01:31:47,595 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-25 01:31:47,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 01:31:41" (1/3) ... [2018-10-25 01:31:47,596 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b02eb06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 01:31:47, skipping insertion in model container [2018-10-25 01:31:47,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:31:42" (2/3) ... [2018-10-25 01:31:47,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b02eb06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 01:31:47, skipping insertion in model container [2018-10-25 01:31:47,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 01:31:47" (3/3) ... [2018-10-25 01:31:47,601 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label40_true-unreach-call.c [2018-10-25 01:31:47,613 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-25 01:31:47,631 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-25 01:31:47,650 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-25 01:31:47,709 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-25 01:31:47,709 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-25 01:31:47,709 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-25 01:31:47,709 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-25 01:31:47,710 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-25 01:31:47,710 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-25 01:31:47,710 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-25 01:31:47,710 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-25 01:31:47,744 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-10-25 01:31:47,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-10-25 01:31:47,755 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:31:47,756 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] [2018-10-25 01:31:47,759 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:31:47,765 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:31:47,766 INFO L82 PathProgramCache]: Analyzing trace with hash -1597771487, now seen corresponding path program 1 times [2018-10-25 01:31:47,769 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:31:47,827 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:31:47,828 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:31:47,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:31:47,828 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:31:47,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:31:48,318 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-10-25 01:31:48,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:31:48,339 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:31:48,339 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-25 01:31:48,339 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:31:48,347 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-25 01:31:48,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-25 01:31:48,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 01:31:48,367 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-10-25 01:31:52,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:31:52,028 INFO L93 Difference]: Finished difference Result 979 states and 1754 transitions. [2018-10-25 01:31:52,030 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-25 01:31:52,031 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2018-10-25 01:31:52,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:31:52,056 INFO L225 Difference]: With dead ends: 979 [2018-10-25 01:31:52,057 INFO L226 Difference]: Without dead ends: 680 [2018-10-25 01:31:52,067 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 01:31:52,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2018-10-25 01:31:52,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 484. [2018-10-25 01:31:52,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 484 states. [2018-10-25 01:31:52,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 730 transitions. [2018-10-25 01:31:52,210 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 730 transitions. Word has length 51 [2018-10-25 01:31:52,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:31:52,211 INFO L481 AbstractCegarLoop]: Abstraction has 484 states and 730 transitions. [2018-10-25 01:31:52,212 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-25 01:31:52,212 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 730 transitions. [2018-10-25 01:31:52,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-10-25 01:31:52,226 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:31:52,227 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:31:52,227 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:31:52,227 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:31:52,228 INFO L82 PathProgramCache]: Analyzing trace with hash 686344627, now seen corresponding path program 1 times [2018-10-25 01:31:52,229 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:31:52,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:31:52,230 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:31:52,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:31:52,231 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:31:52,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:31:52,633 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:31:52,633 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:31:52,633 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-25 01:31:52,634 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:31:52,636 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 01:31:52,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 01:31:52,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-25 01:31:52,637 INFO L87 Difference]: Start difference. First operand 484 states and 730 transitions. Second operand 6 states. [2018-10-25 01:31:56,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:31:56,870 INFO L93 Difference]: Finished difference Result 1555 states and 2493 transitions. [2018-10-25 01:31:56,874 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-25 01:31:56,875 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 124 [2018-10-25 01:31:56,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:31:56,885 INFO L225 Difference]: With dead ends: 1555 [2018-10-25 01:31:56,885 INFO L226 Difference]: Without dead ends: 1077 [2018-10-25 01:31:56,889 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-25 01:31:56,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1077 states. [2018-10-25 01:31:56,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1077 to 1063. [2018-10-25 01:31:56,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1063 states. [2018-10-25 01:31:56,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 1592 transitions. [2018-10-25 01:31:56,952 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 1592 transitions. Word has length 124 [2018-10-25 01:31:56,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:31:56,953 INFO L481 AbstractCegarLoop]: Abstraction has 1063 states and 1592 transitions. [2018-10-25 01:31:56,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 01:31:56,953 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 1592 transitions. [2018-10-25 01:31:56,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-10-25 01:31:56,957 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:31:56,958 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:31:56,958 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:31:56,958 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:31:56,959 INFO L82 PathProgramCache]: Analyzing trace with hash 2122174748, now seen corresponding path program 1 times [2018-10-25 01:31:56,959 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:31:56,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:31:56,960 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:31:56,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:31:56,960 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:31:57,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:31:57,146 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:31:57,147 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:31:57,147 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-25 01:31:57,147 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:31:57,148 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-25 01:31:57,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-25 01:31:57,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 01:31:57,149 INFO L87 Difference]: Start difference. First operand 1063 states and 1592 transitions. Second operand 4 states. [2018-10-25 01:32:00,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:32:00,581 INFO L93 Difference]: Finished difference Result 2907 states and 4465 transitions. [2018-10-25 01:32:00,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-25 01:32:00,593 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 125 [2018-10-25 01:32:00,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:32:00,611 INFO L225 Difference]: With dead ends: 2907 [2018-10-25 01:32:00,611 INFO L226 Difference]: Without dead ends: 1850 [2018-10-25 01:32:00,618 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 [2018-10-25 01:32:00,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1850 states. [2018-10-25 01:32:00,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1850 to 1646. [2018-10-25 01:32:00,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1646 states. [2018-10-25 01:32:00,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1646 states to 1646 states and 2436 transitions. [2018-10-25 01:32:00,689 INFO L78 Accepts]: Start accepts. Automaton has 1646 states and 2436 transitions. Word has length 125 [2018-10-25 01:32:00,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:32:00,690 INFO L481 AbstractCegarLoop]: Abstraction has 1646 states and 2436 transitions. [2018-10-25 01:32:00,690 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-25 01:32:00,690 INFO L276 IsEmpty]: Start isEmpty. Operand 1646 states and 2436 transitions. [2018-10-25 01:32:00,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-10-25 01:32:00,696 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:32:00,696 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:32:00,696 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:32:00,697 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:32:00,697 INFO L82 PathProgramCache]: Analyzing trace with hash -777131457, now seen corresponding path program 1 times [2018-10-25 01:32:00,697 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:32:00,698 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:32:00,698 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:32:00,698 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:32:00,699 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:32:00,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:32:01,131 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:32:01,132 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:32:01,132 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-25 01:32:01,132 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:32:01,134 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-25 01:32:01,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-25 01:32:01,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-25 01:32:01,135 INFO L87 Difference]: Start difference. First operand 1646 states and 2436 transitions. Second operand 7 states. [2018-10-25 01:32:05,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:32:05,868 INFO L93 Difference]: Finished difference Result 4745 states and 7344 transitions. [2018-10-25 01:32:05,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-25 01:32:05,879 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 146 [2018-10-25 01:32:05,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:32:05,902 INFO L225 Difference]: With dead ends: 4745 [2018-10-25 01:32:05,902 INFO L226 Difference]: Without dead ends: 2910 [2018-10-25 01:32:05,916 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-10-25 01:32:05,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2910 states. [2018-10-25 01:32:06,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2910 to 2759. [2018-10-25 01:32:06,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2759 states. [2018-10-25 01:32:06,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2759 states to 2759 states and 3982 transitions. [2018-10-25 01:32:06,017 INFO L78 Accepts]: Start accepts. Automaton has 2759 states and 3982 transitions. Word has length 146 [2018-10-25 01:32:06,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:32:06,018 INFO L481 AbstractCegarLoop]: Abstraction has 2759 states and 3982 transitions. [2018-10-25 01:32:06,018 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-25 01:32:06,018 INFO L276 IsEmpty]: Start isEmpty. Operand 2759 states and 3982 transitions. [2018-10-25 01:32:06,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2018-10-25 01:32:06,027 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:32:06,027 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:32:06,028 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:32:06,028 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:32:06,028 INFO L82 PathProgramCache]: Analyzing trace with hash 1721682631, now seen corresponding path program 1 times [2018-10-25 01:32:06,028 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:32:06,029 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:32:06,030 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:32:06,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:32:06,030 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:32:06,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:32:06,992 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-10-25 01:32:06,993 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:32:06,993 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:32:06,994 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 264 with the following transitions: [2018-10-25 01:32:06,998 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [309], [311], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [594], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-25 01:32:07,057 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:32:07,058 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:32:10,080 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:32:10,082 INFO L272 AbstractInterpreter]: Visited 126 different actions 374 times. Merged at 7 different actions 20 times. Never widened. Found 3 fixpoints after 3 different actions. Largest state had 28 variables. [2018-10-25 01:32:10,125 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:32:10,127 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:32:10,127 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:32:10,127 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 [2018-10-25 01:32:10,140 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:32:10,140 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:32:10,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:32:10,288 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:32:11,747 WARN L179 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 52 DAG size of output: 35 [2018-10-25 01:32:11,944 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-10-25 01:32:11,944 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:32:12,406 WARN L179 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 6 [2018-10-25 01:32:13,105 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-10-25 01:32:13,141 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-25 01:32:13,142 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 11 [2018-10-25 01:32:13,142 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:32:13,143 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 01:32:13,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 01:32:13,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-10-25 01:32:13,144 INFO L87 Difference]: Start difference. First operand 2759 states and 3982 transitions. Second operand 6 states. [2018-10-25 01:32:21,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:32:21,792 INFO L93 Difference]: Finished difference Result 8419 states and 13157 transitions. [2018-10-25 01:32:21,793 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-25 01:32:21,793 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 263 [2018-10-25 01:32:21,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:32:21,830 INFO L225 Difference]: With dead ends: 8419 [2018-10-25 01:32:21,830 INFO L226 Difference]: Without dead ends: 5666 [2018-10-25 01:32:21,855 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 536 GetRequests, 521 SyntacticMatches, 6 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-10-25 01:32:21,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5666 states. [2018-10-25 01:32:22,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5666 to 5530. [2018-10-25 01:32:22,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5530 states. [2018-10-25 01:32:22,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5530 states to 5530 states and 8373 transitions. [2018-10-25 01:32:22,031 INFO L78 Accepts]: Start accepts. Automaton has 5530 states and 8373 transitions. Word has length 263 [2018-10-25 01:32:22,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:32:22,032 INFO L481 AbstractCegarLoop]: Abstraction has 5530 states and 8373 transitions. [2018-10-25 01:32:22,032 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 01:32:22,032 INFO L276 IsEmpty]: Start isEmpty. Operand 5530 states and 8373 transitions. [2018-10-25 01:32:22,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-10-25 01:32:22,047 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:32:22,048 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:32:22,048 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:32:22,048 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:32:22,050 INFO L82 PathProgramCache]: Analyzing trace with hash -1726189397, now seen corresponding path program 1 times [2018-10-25 01:32:22,050 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:32:22,051 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:32:22,051 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:32:22,051 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:32:22,052 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:32:22,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:32:22,721 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 187 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:32:22,722 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:32:22,722 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:32:22,722 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 287 with the following transitions: [2018-10-25 01:32:22,723 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [309], [311], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [618], [621], [625], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-25 01:32:22,732 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:32:22,732 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:32:23,670 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:32:23,670 INFO L272 AbstractInterpreter]: Visited 141 different actions 409 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-10-25 01:32:23,708 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:32:23,708 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:32:23,708 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:32:23,709 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 [2018-10-25 01:32:23,733 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:32:23,734 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:32:23,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:32:23,846 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:32:24,015 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2018-10-25 01:32:24,016 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:32:24,288 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2018-10-25 01:32:24,319 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-25 01:32:24,320 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2018-10-25 01:32:24,320 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:32:24,321 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 01:32:24,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 01:32:24,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-10-25 01:32:24,322 INFO L87 Difference]: Start difference. First operand 5530 states and 8373 transitions. Second operand 3 states. [2018-10-25 01:32:27,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:32:27,109 INFO L93 Difference]: Finished difference Result 14515 states and 23013 transitions. [2018-10-25 01:32:27,110 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 01:32:27,110 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 286 [2018-10-25 01:32:27,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:32:27,170 INFO L225 Difference]: With dead ends: 14515 [2018-10-25 01:32:27,170 INFO L226 Difference]: Without dead ends: 8991 [2018-10-25 01:32:27,222 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 577 GetRequests, 572 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-10-25 01:32:27,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8991 states. [2018-10-25 01:32:27,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8991 to 8791. [2018-10-25 01:32:27,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8791 states. [2018-10-25 01:32:27,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8791 states to 8791 states and 12629 transitions. [2018-10-25 01:32:27,510 INFO L78 Accepts]: Start accepts. Automaton has 8791 states and 12629 transitions. Word has length 286 [2018-10-25 01:32:27,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:32:27,511 INFO L481 AbstractCegarLoop]: Abstraction has 8791 states and 12629 transitions. [2018-10-25 01:32:27,511 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 01:32:27,511 INFO L276 IsEmpty]: Start isEmpty. Operand 8791 states and 12629 transitions. [2018-10-25 01:32:27,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2018-10-25 01:32:27,537 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:32:27,537 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-25 01:32:27,538 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:32:27,538 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:32:27,538 INFO L82 PathProgramCache]: Analyzing trace with hash 454493284, now seen corresponding path program 1 times [2018-10-25 01:32:27,538 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:32:27,539 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:32:27,539 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:32:27,540 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:32:27,540 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:32:27,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:32:28,741 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 83 proven. 122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:32:28,742 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:32:28,742 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:32:28,742 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 301 with the following transitions: [2018-10-25 01:32:28,743 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [309], [311], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [777], [781], [784], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-25 01:32:28,751 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:32:28,752 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:32:30,339 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:32:30,340 INFO L272 AbstractInterpreter]: Visited 141 different actions 558 times. Merged at 7 different actions 29 times. Widened at 1 different actions 1 times. Found 4 fixpoints after 3 different actions. Largest state had 28 variables. [2018-10-25 01:32:30,378 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:32:30,378 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:32:30,378 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:32:30,379 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 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 01:32:30,395 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:32:30,395 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:32:30,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:32:30,492 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:32:30,551 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-10-25 01:32:30,551 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:32:31,140 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-10-25 01:32:31,166 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-25 01:32:31,166 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 8 [2018-10-25 01:32:31,166 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:32:31,167 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 01:32:31,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 01:32:31,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-10-25 01:32:31,168 INFO L87 Difference]: Start difference. First operand 8791 states and 12629 transitions. Second operand 3 states. [2018-10-25 01:32:33,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:32:33,012 INFO L93 Difference]: Finished difference Result 19513 states and 28614 transitions. [2018-10-25 01:32:33,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 01:32:33,016 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 300 [2018-10-25 01:32:33,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:32:33,072 INFO L225 Difference]: With dead ends: 19513 [2018-10-25 01:32:33,073 INFO L226 Difference]: Without dead ends: 10728 [2018-10-25 01:32:33,108 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 610 GetRequests, 602 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-10-25 01:32:33,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10728 states. [2018-10-25 01:32:33,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10728 to 9774. [2018-10-25 01:32:33,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9774 states. [2018-10-25 01:32:33,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9774 states to 9774 states and 13902 transitions. [2018-10-25 01:32:33,379 INFO L78 Accepts]: Start accepts. Automaton has 9774 states and 13902 transitions. Word has length 300 [2018-10-25 01:32:33,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:32:33,380 INFO L481 AbstractCegarLoop]: Abstraction has 9774 states and 13902 transitions. [2018-10-25 01:32:33,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 01:32:33,380 INFO L276 IsEmpty]: Start isEmpty. Operand 9774 states and 13902 transitions. [2018-10-25 01:32:33,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2018-10-25 01:32:33,428 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:32:33,429 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:32:33,429 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:32:33,429 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:32:33,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1785216578, now seen corresponding path program 1 times [2018-10-25 01:32:33,430 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:32:33,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:32:33,431 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:32:33,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:32:33,431 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:32:33,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:32:34,420 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 0 proven. 95 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2018-10-25 01:32:34,421 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:32:34,421 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:32:34,421 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 360 with the following transitions: [2018-10-25 01:32:34,421 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [309], [311], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [777], [781], [785], [789], [793], [797], [808], [812], [816], [820], [824], [828], [832], [843], [847], [851], [862], [866], [870], [874], [878], [889], [893], [897], [901], [905], [909], [913], [924], [928], [932], [936], [940], [944], [948], [952], [956], [960], [971], [975], [979], [983], [987], [991], [994], [999], [1001], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-25 01:32:34,427 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:32:34,428 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:32:35,893 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:32:35,893 INFO L272 AbstractInterpreter]: Visited 187 different actions 919 times. Merged at 7 different actions 31 times. Never widened. Found 5 fixpoints after 2 different actions. Largest state had 28 variables. [2018-10-25 01:32:35,937 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:32:35,937 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:32:35,937 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:32:35,938 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 01:32:35,957 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:32:35,957 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:32:36,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:32:36,091 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:32:37,572 WARN L179 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 42 DAG size of output: 32 [2018-10-25 01:32:38,268 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 11 proven. 84 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2018-10-25 01:32:38,269 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:32:38,882 WARN L179 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 33 [2018-10-25 01:32:38,888 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:38,954 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:39,000 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:39,077 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:39,188 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:39,259 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:39,370 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:39,582 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:39,622 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:39,673 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:39,712 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:39,793 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:39,843 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:39,882 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:39,918 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:39,958 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:40,072 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:40,112 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:40,154 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:40,204 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:40,260 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:40,347 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:40,386 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:40,423 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:40,465 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:40,503 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:40,552 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:40,630 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:40,735 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:40,773 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:40,826 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:40,876 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:40,958 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:41,010 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:41,074 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:41,411 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:41,725 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:41,804 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:41,842 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:41,912 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:41,949 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:42,121 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:42,159 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:42,195 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:42,341 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:42,379 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:42,426 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:42,463 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:42,501 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:42,537 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:42,576 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:42,612 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:42,649 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:42,687 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:42,726 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:42,795 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:42,836 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:42,887 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:42,925 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:42,962 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:43,000 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:43,035 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:43,073 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:43,110 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:43,148 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:43,185 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:43,253 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:43,327 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:43,366 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:43,402 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:43,451 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:43,486 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:43,523 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:43,559 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:43,594 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:43,630 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:43,666 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:43,703 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:43,741 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:43,779 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:43,824 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:43,862 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:43,897 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:43,934 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:43,970 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:44,007 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:44,044 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:44,079 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:44,125 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:44,161 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:44,198 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:44,234 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:44,538 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:44,595 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:44,632 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:44,702 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:44,745 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:44,782 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:44,819 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:44,891 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:44,930 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:44,968 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:45,004 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:45,040 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:45,093 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:45,131 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:45,202 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:45,242 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:45,281 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:45,629 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:45,713 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:45,751 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:45,788 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:45,828 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:45,866 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:46,139 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:46,177 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:46,233 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:46,380 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:46,428 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:46,465 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:46,504 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:46,540 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:46,868 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:46,948 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:46,984 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:47,020 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:47,056 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:47,176 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:47,215 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:47,271 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:47,307 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:47,343 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:47,381 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:47,417 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:47,453 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:47,489 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:47,542 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:47,578 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:47,614 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:47,655 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:47,692 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:47,731 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:47,769 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:47,806 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:47,842 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:47,879 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:47,916 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:47,952 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:47,989 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:48,028 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:48,064 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:48,102 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:48,138 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:48,176 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:48,211 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:48,249 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:48,285 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:48,323 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:48,360 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:48,419 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:48,455 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:48,491 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:48,534 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:48,573 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:48,611 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:48,647 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:54,501 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 91 proven. 127 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:32:54,523 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 01:32:54,523 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 22 [2018-10-25 01:32:54,523 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 01:32:54,526 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-25 01:32:54,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-25 01:32:54,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=332, Unknown=2, NotChecked=0, Total=462 [2018-10-25 01:32:54,527 INFO L87 Difference]: Start difference. First operand 9774 states and 13902 transitions. Second operand 16 states. [2018-10-25 01:32:58,508 WARN L179 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 35 [2018-10-25 01:34:06,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:34:06,502 INFO L93 Difference]: Finished difference Result 39739 states and 69488 transitions. [2018-10-25 01:34:06,502 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-10-25 01:34:06,502 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 359 [2018-10-25 01:34:06,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:34:06,770 INFO L225 Difference]: With dead ends: 39739 [2018-10-25 01:34:06,770 INFO L226 Difference]: Without dead ends: 29971 [2018-10-25 01:34:06,882 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 762 GetRequests, 542 SyntacticMatches, 168 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2399 ImplicationChecksByTransitivity, 18.7s TimeCoverageRelationStatistics Valid=743, Invalid=2117, Unknown=2, NotChecked=0, Total=2862 [2018-10-25 01:34:06,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29971 states. [2018-10-25 01:34:07,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29971 to 27586. [2018-10-25 01:34:07,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27586 states. [2018-10-25 01:34:07,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27586 states to 27586 states and 39230 transitions. [2018-10-25 01:34:07,943 INFO L78 Accepts]: Start accepts. Automaton has 27586 states and 39230 transitions. Word has length 359 [2018-10-25 01:34:07,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:34:07,944 INFO L481 AbstractCegarLoop]: Abstraction has 27586 states and 39230 transitions. [2018-10-25 01:34:07,944 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-25 01:34:07,944 INFO L276 IsEmpty]: Start isEmpty. Operand 27586 states and 39230 transitions. [2018-10-25 01:34:08,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2018-10-25 01:34:08,048 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:34:08,049 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:34:08,049 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:34:08,049 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:34:08,049 INFO L82 PathProgramCache]: Analyzing trace with hash 20472354, now seen corresponding path program 1 times [2018-10-25 01:34:08,050 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:34:08,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:34:08,050 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:34:08,051 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:34:08,051 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:34:08,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:34:09,025 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 341 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:34:09,026 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:34:09,026 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:34:09,026 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 388 with the following transitions: [2018-10-25 01:34:09,026 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [309], [311], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [594], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [657], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-25 01:34:09,030 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:34:09,030 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:34:10,772 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:34:10,772 INFO L272 AbstractInterpreter]: Visited 142 different actions 710 times. Merged at 8 different actions 45 times. Widened at 1 different actions 3 times. Found 9 fixpoints after 3 different actions. Largest state had 28 variables. [2018-10-25 01:34:10,810 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:34:10,811 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:34:10,811 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:34:10,811 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 01:34:10,823 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:34:10,824 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:34:10,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:34:10,954 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:34:11,295 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 323 proven. 2 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2018-10-25 01:34:11,295 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:34:11,472 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 34 [2018-10-25 01:34:11,871 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 323 proven. 2 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2018-10-25 01:34:11,893 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 01:34:11,893 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 5, 5] total 20 [2018-10-25 01:34:11,893 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 01:34:11,894 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-25 01:34:11,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-25 01:34:11,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2018-10-25 01:34:11,895 INFO L87 Difference]: Start difference. First operand 27586 states and 39230 transitions. Second operand 18 states. [2018-10-25 01:34:23,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:34:23,699 INFO L93 Difference]: Finished difference Result 65550 states and 111298 transitions. [2018-10-25 01:34:23,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-10-25 01:34:23,699 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 387 [2018-10-25 01:34:23,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:34:23,941 INFO L225 Difference]: With dead ends: 65550 [2018-10-25 01:34:23,941 INFO L226 Difference]: Without dead ends: 35986 [2018-10-25 01:34:24,121 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 867 GetRequests, 806 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1138 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=832, Invalid=3074, Unknown=0, NotChecked=0, Total=3906 [2018-10-25 01:34:24,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35986 states. [2018-10-25 01:34:25,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35986 to 34025. [2018-10-25 01:34:25,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34025 states. [2018-10-25 01:34:25,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34025 states to 34025 states and 45670 transitions. [2018-10-25 01:34:25,207 INFO L78 Accepts]: Start accepts. Automaton has 34025 states and 45670 transitions. Word has length 387 [2018-10-25 01:34:25,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:34:25,208 INFO L481 AbstractCegarLoop]: Abstraction has 34025 states and 45670 transitions. [2018-10-25 01:34:25,208 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-25 01:34:25,208 INFO L276 IsEmpty]: Start isEmpty. Operand 34025 states and 45670 transitions. [2018-10-25 01:34:25,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2018-10-25 01:34:25,253 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:34:25,254 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, 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, 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] [2018-10-25 01:34:25,254 INFO L424 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:34:25,254 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:34:25,255 INFO L82 PathProgramCache]: Analyzing trace with hash -1433143247, now seen corresponding path program 1 times [2018-10-25 01:34:25,255 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:34:25,255 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:34:25,256 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:34:25,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:34:25,256 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:34:25,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:34:25,530 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 132 proven. 4 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2018-10-25 01:34:25,530 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:34:25,531 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:34:25,531 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 413 with the following transitions: [2018-10-25 01:34:25,531 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [309], [311], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [538], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [774], [776], [777], [781], [785], [789], [793], [797], [808], [812], [816], [820], [824], [828], [832], [843], [847], [851], [854], [859], [861], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-25 01:34:25,535 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:34:25,535 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:34:25,660 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 01:34:25,660 INFO L272 AbstractInterpreter]: Visited 153 different actions 153 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-10-25 01:34:25,697 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:34:25,697 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 01:34:26,318 INFO L232 lantSequenceWeakener]: Weakened 397 states. On average, predicates are now at 73.38% of their original sizes. [2018-10-25 01:34:26,318 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 01:34:26,491 INFO L413 sIntCurrentIteration]: We have 411 unified AI predicates [2018-10-25 01:34:26,492 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-25 01:34:26,492 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-25 01:34:26,493 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [3] total 8 [2018-10-25 01:34:26,493 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:34:26,494 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-25 01:34:26,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-25 01:34:26,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-25 01:34:26,495 INFO L87 Difference]: Start difference. First operand 34025 states and 45670 transitions. Second operand 7 states. [2018-10-25 01:35:24,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:35:24,876 INFO L93 Difference]: Finished difference Result 67668 states and 90925 transitions. [2018-10-25 01:35:24,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-25 01:35:24,876 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 412 [2018-10-25 01:35:24,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:35:25,006 INFO L225 Difference]: With dead ends: 67668 [2018-10-25 01:35:25,006 INFO L226 Difference]: Without dead ends: 34029 [2018-10-25 01:35:25,084 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 412 GetRequests, 406 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2018-10-25 01:35:25,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34029 states. [2018-10-25 01:35:25,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34029 to 34025. [2018-10-25 01:35:25,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34025 states. [2018-10-25 01:35:25,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34025 states to 34025 states and 45668 transitions. [2018-10-25 01:35:25,809 INFO L78 Accepts]: Start accepts. Automaton has 34025 states and 45668 transitions. Word has length 412 [2018-10-25 01:35:25,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:35:25,810 INFO L481 AbstractCegarLoop]: Abstraction has 34025 states and 45668 transitions. [2018-10-25 01:35:25,810 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-25 01:35:25,810 INFO L276 IsEmpty]: Start isEmpty. Operand 34025 states and 45668 transitions. [2018-10-25 01:35:25,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2018-10-25 01:35:25,873 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:35:25,874 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:35:25,874 INFO L424 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:35:25,875 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:35:25,875 INFO L82 PathProgramCache]: Analyzing trace with hash -1727810564, now seen corresponding path program 1 times [2018-10-25 01:35:25,875 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:35:25,876 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:35:25,876 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:35:25,876 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:35:25,876 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:35:25,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:35:26,726 INFO L134 CoverageAnalysis]: Checked inductivity of 453 backedges. 347 proven. 99 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-25 01:35:26,726 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:35:26,726 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:35:26,727 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 419 with the following transitions: [2018-10-25 01:35:26,727 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [309], [311], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [629], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [777], [781], [785], [789], [793], [797], [808], [812], [816], [820], [824], [828], [832], [843], [847], [851], [854], [859], [861], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-25 01:35:26,731 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:35:26,732 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:35:28,242 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:35:28,243 INFO L272 AbstractInterpreter]: Visited 156 different actions 464 times. Merged at 7 different actions 20 times. Never widened. Found 3 fixpoints after 3 different actions. Largest state had 28 variables. [2018-10-25 01:35:28,249 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:35:28,249 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:35:28,249 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:35:28,249 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 01:35:28,259 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:35:28,259 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:35:28,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:35:28,388 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:35:28,515 INFO L134 CoverageAnalysis]: Checked inductivity of 453 backedges. 352 proven. 2 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2018-10-25 01:35:28,515 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:35:28,723 INFO L134 CoverageAnalysis]: Checked inductivity of 453 backedges. 352 proven. 2 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2018-10-25 01:35:28,744 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 01:35:28,745 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 7 [2018-10-25 01:35:28,745 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 01:35:28,746 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 01:35:28,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 01:35:28,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-25 01:35:28,746 INFO L87 Difference]: Start difference. First operand 34025 states and 45668 transitions. Second operand 6 states. [2018-10-25 01:35:30,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:35:30,706 INFO L93 Difference]: Finished difference Result 66420 states and 92436 transitions. [2018-10-25 01:35:30,707 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-25 01:35:30,707 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 418 [2018-10-25 01:35:30,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:35:30,845 INFO L225 Difference]: With dead ends: 66420 [2018-10-25 01:35:30,845 INFO L226 Difference]: Without dead ends: 32781 [2018-10-25 01:35:30,943 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 849 GetRequests, 837 SyntacticMatches, 4 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2018-10-25 01:35:30,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32781 states. [2018-10-25 01:35:31,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32781 to 32184. [2018-10-25 01:35:31,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32184 states. [2018-10-25 01:35:32,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32184 states to 32184 states and 39104 transitions. [2018-10-25 01:35:32,077 INFO L78 Accepts]: Start accepts. Automaton has 32184 states and 39104 transitions. Word has length 418 [2018-10-25 01:35:32,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:35:32,078 INFO L481 AbstractCegarLoop]: Abstraction has 32184 states and 39104 transitions. [2018-10-25 01:35:32,078 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 01:35:32,078 INFO L276 IsEmpty]: Start isEmpty. Operand 32184 states and 39104 transitions. [2018-10-25 01:35:32,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2018-10-25 01:35:32,129 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:35:32,130 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, 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, 3, 3, 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] [2018-10-25 01:35:32,130 INFO L424 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:35:32,130 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:35:32,130 INFO L82 PathProgramCache]: Analyzing trace with hash -1660789260, now seen corresponding path program 1 times [2018-10-25 01:35:32,130 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:35:32,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:35:32,131 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:35:32,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:35:32,135 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:35:32,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:35:33,027 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 138 proven. 234 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2018-10-25 01:35:33,028 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:35:33,028 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:35:33,029 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 440 with the following transitions: [2018-10-25 01:35:33,029 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [309], [311], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [653], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [777], [781], [785], [789], [793], [797], [808], [812], [816], [820], [824], [828], [832], [843], [847], [851], [854], [859], [861], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-25 01:35:33,033 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:35:33,033 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-10-25 01:35:33,198 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-10-25 01:35:33,199 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-10-25 01:35:33,199 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-25 01:35:33,199 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:35:33,199 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 01:35:33,208 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:35:33,208 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:35:33,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:35:33,342 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:35:33,344 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-25 01:35:33,545 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 01:35:33,545 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-25 01:35:33,551 WARN L205 ceAbstractionStarter]: Timeout [2018-10-25 01:35:33,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 01:35:33 BoogieIcfgContainer [2018-10-25 01:35:33,551 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-25 01:35:33,552 INFO L168 Benchmark]: Toolchain (without parser) took 232442.17 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.7 GB in the end (delta: -1.3 GB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-10-25 01:35:33,553 INFO L168 Benchmark]: CDTParser took 0.20 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. [2018-10-25 01:35:33,554 INFO L168 Benchmark]: CACSL2BoogieTranslator took 954.62 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: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. [2018-10-25 01:35:33,554 INFO L168 Benchmark]: Boogie Procedure Inliner took 294.05 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 754.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -848.5 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2018-10-25 01:35:33,555 INFO L168 Benchmark]: Boogie Preprocessor took 148.36 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. [2018-10-25 01:35:33,556 INFO L168 Benchmark]: RCFGBuilder took 5079.11 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 185.9 MB). Peak memory consumption was 185.9 MB. Max. memory is 7.1 GB. [2018-10-25 01:35:33,556 INFO L168 Benchmark]: TraceAbstraction took 225959.85 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 2.7 GB in the end (delta: -711.2 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-10-25 01:35:33,563 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 954.62 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: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 294.05 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 754.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -848.5 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 148.36 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 5079.11 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 185.9 MB). Peak memory consumption was 185.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 225959.85 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 2.7 GB in the end (delta: -711.2 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 138]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 138). Cancelled while BasicCegarLoop was analyzing trace of length 440 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while XnfDer was eliminating 1 quantified variables from 2 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 225.8s OverallTime, 12 OverallIterations, 4 TraceHistogramMax, 175.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2468 SDtfs, 13982 SDslu, 2865 SDs, 0 SdLazy, 25799 SolverSat, 5657 SolverUnsat, 24 SolverUnknown, 0 SolverNotchecked, 153.2s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 4647 GetRequests, 4298 SyntacticMatches, 181 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3582 ImplicationChecksByTransitivity, 26.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34025occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 10.9s AbstIntTime, 8 AbstIntIterations, 1 AbstIntStrong, 0.9985585501278929 AbsIntWeakeningRatio, 0.08759124087591241 AbsIntAvgWeakeningVarsNumRemoved, 18.34549878345499 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 5.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 6802 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 29.2s InterpolantComputationTime, 4884 NumberOfCodeBlocks, 4884 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 6874 ConstructedInterpolants, 314 QuantifiedInterpolants, 15369243 SizeOfPredicates, 12 NumberOfNonLiveVariables, 3347 ConjunctsInSsa, 51 ConjunctsInUnsatCore, 23 InterpolantComputations, 9 PerfectInterpolantSequences, 4780/5593 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown