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/Problem14_label31_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 05:28:08,302 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 05:28:08,306 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 05:28:08,323 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 05:28:08,323 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 05:28:08,324 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 05:28:08,325 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 05:28:08,327 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 05:28:08,329 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 05:28:08,330 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 05:28:08,331 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 05:28:08,331 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 05:28:08,332 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 05:28:08,335 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 05:28:08,340 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 05:28:08,341 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 05:28:08,341 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 05:28:08,347 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 05:28:08,354 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 05:28:08,356 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 05:28:08,357 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 05:28:08,358 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 05:28:08,362 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 05:28:08,362 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 05:28:08,362 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 05:28:08,363 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 05:28:08,365 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 05:28:08,366 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 05:28:08,370 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 05:28:08,371 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 05:28:08,371 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 05:28:08,373 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-27 05:28:08,377 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-27 05:28:08,400 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 05:28:08,401 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 05:28:08,401 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 05:28:08,405 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 05:28:08,405 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 05:28:08,406 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 05:28:08,406 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-27 05:28:08,406 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 05:28:08,406 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 05:28:08,407 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 05:28:08,407 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 05:28:08,407 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 05:28:08,407 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 05:28:08,407 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 05:28:08,408 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 05:28:08,409 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 05:28:08,409 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 05:28:08,409 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 05:28:08,409 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 05:28:08,409 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 05:28:08,410 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 05:28:08,410 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 05:28:08,410 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 05:28:08,410 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 05:28:08,410 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 05:28:08,411 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 05:28:08,412 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 05:28:08,412 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 05:28:08,412 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 05:28:08,413 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 05:28:08,414 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 05:28:08,414 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 05:28:08,414 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 05:28:08,414 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 05:28:08,414 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 05:28:08,414 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 05:28:08,461 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 05:28:08,476 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 05:28:08,482 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 05:28:08,484 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 05:28:08,484 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 05:28:08,485 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label31_false-unreach-call_false-termination.c [2018-10-27 05:28:08,559 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a4fe2a43e/e94fe2da5be14c10bcdefa196944f4f0/FLAG8180df618 [2018-10-27 05:28:09,223 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 05:28:09,224 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label31_false-unreach-call_false-termination.c [2018-10-27 05:28:09,254 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a4fe2a43e/e94fe2da5be14c10bcdefa196944f4f0/FLAG8180df618 [2018-10-27 05:28:09,280 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a4fe2a43e/e94fe2da5be14c10bcdefa196944f4f0 [2018-10-27 05:28:09,296 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 05:28:09,298 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 05:28:09,299 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 05:28:09,301 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 05:28:09,306 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 05:28:09,307 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:28:09" (1/1) ... [2018-10-27 05:28:09,311 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@405e6276 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:28:09, skipping insertion in model container [2018-10-27 05:28:09,312 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:28:09" (1/1) ... [2018-10-27 05:28:09,324 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 05:28:09,418 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 05:28:09,977 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 05:28:09,982 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 05:28:10,133 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 05:28:10,156 INFO L193 MainTranslator]: Completed translation [2018-10-27 05:28:10,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:28:10 WrapperNode [2018-10-27 05:28:10,157 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 05:28:10,158 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 05:28:10,158 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 05:28:10,159 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 05:28:10,167 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:28:10" (1/1) ... [2018-10-27 05:28:10,190 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:28:10" (1/1) ... [2018-10-27 05:28:10,377 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 05:28:10,378 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 05:28:10,378 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 05:28:10,378 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 05:28:10,392 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:28:10" (1/1) ... [2018-10-27 05:28:10,393 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:28:10" (1/1) ... [2018-10-27 05:28:10,400 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:28:10" (1/1) ... [2018-10-27 05:28:10,401 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:28:10" (1/1) ... [2018-10-27 05:28:10,444 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:28:10" (1/1) ... [2018-10-27 05:28:10,460 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:28:10" (1/1) ... [2018-10-27 05:28:10,477 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:28:10" (1/1) ... [2018-10-27 05:28:10,492 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 05:28:10,493 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 05:28:10,493 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 05:28:10,494 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 05:28:10,495 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:28:10" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 05:28:10,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 05:28:10,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 05:28:10,570 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 05:28:10,571 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 05:28:10,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 05:28:10,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 05:28:10,574 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 05:28:10,575 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 05:28:14,383 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 05:28:14,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:28:14 BoogieIcfgContainer [2018-10-27 05:28:14,384 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 05:28:14,385 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 05:28:14,385 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 05:28:14,389 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 05:28:14,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:28:09" (1/3) ... [2018-10-27 05:28:14,390 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14a83e08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:28:14, skipping insertion in model container [2018-10-27 05:28:14,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:28:10" (2/3) ... [2018-10-27 05:28:14,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14a83e08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:28:14, skipping insertion in model container [2018-10-27 05:28:14,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:28:14" (3/3) ... [2018-10-27 05:28:14,393 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label31_false-unreach-call_false-termination.c [2018-10-27 05:28:14,403 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 05:28:14,411 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 05:28:14,429 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 05:28:14,468 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 05:28:14,470 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 05:28:14,470 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 05:28:14,470 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 05:28:14,471 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 05:28:14,471 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 05:28:14,471 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 05:28:14,471 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 05:28:14,509 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-10-27 05:28:14,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-27 05:28:14,516 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:28:14,517 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] [2018-10-27 05:28:14,519 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:28:14,524 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:28:14,525 INFO L82 PathProgramCache]: Analyzing trace with hash -1186927676, now seen corresponding path program 1 times [2018-10-27 05:28:14,527 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:28:14,585 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:28:14,586 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:28:14,586 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:28:14,586 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:28:14,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:28:14,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:28:14,958 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:28:14,958 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 05:28:14,958 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:28:14,966 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 05:28:14,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 05:28:14,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 05:28:14,996 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-10-27 05:28:17,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:28:17,201 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-10-27 05:28:17,202 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 05:28:17,203 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2018-10-27 05:28:17,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:28:17,223 INFO L225 Difference]: With dead ends: 691 [2018-10-27 05:28:17,223 INFO L226 Difference]: Without dead ends: 434 [2018-10-27 05:28:17,231 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 05:28:17,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-10-27 05:28:17,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-10-27 05:28:17,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-10-27 05:28:17,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 767 transitions. [2018-10-27 05:28:17,319 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 767 transitions. Word has length 30 [2018-10-27 05:28:17,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:28:17,319 INFO L481 AbstractCegarLoop]: Abstraction has 434 states and 767 transitions. [2018-10-27 05:28:17,320 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 05:28:17,320 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 767 transitions. [2018-10-27 05:28:17,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-10-27 05:28:17,327 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:28:17,328 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:28:17,329 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:28:17,329 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:28:17,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1887120035, now seen corresponding path program 1 times [2018-10-27 05:28:17,330 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:28:17,331 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:28:17,331 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:28:17,331 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:28:17,332 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:28:17,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:28:17,647 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:28:17,647 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:28:17,648 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 05:28:17,648 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:28:17,650 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 05:28:17,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 05:28:17,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 05:28:17,651 INFO L87 Difference]: Start difference. First operand 434 states and 767 transitions. Second operand 5 states. [2018-10-27 05:28:23,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:28:23,587 INFO L93 Difference]: Finished difference Result 1416 states and 2580 transitions. [2018-10-27 05:28:23,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 05:28:23,592 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2018-10-27 05:28:23,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:28:23,603 INFO L225 Difference]: With dead ends: 1416 [2018-10-27 05:28:23,603 INFO L226 Difference]: Without dead ends: 988 [2018-10-27 05:28:23,611 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-27 05:28:23,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2018-10-27 05:28:23,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 973. [2018-10-27 05:28:23,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 973 states. [2018-10-27 05:28:23,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 973 states to 973 states and 1540 transitions. [2018-10-27 05:28:23,684 INFO L78 Accepts]: Start accepts. Automaton has 973 states and 1540 transitions. Word has length 107 [2018-10-27 05:28:23,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:28:23,686 INFO L481 AbstractCegarLoop]: Abstraction has 973 states and 1540 transitions. [2018-10-27 05:28:23,686 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 05:28:23,686 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states and 1540 transitions. [2018-10-27 05:28:23,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2018-10-27 05:28:23,704 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:28:23,704 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:28:23,704 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:28:23,705 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:28:23,705 INFO L82 PathProgramCache]: Analyzing trace with hash 1620618787, now seen corresponding path program 1 times [2018-10-27 05:28:23,705 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:28:23,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:28:23,706 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:28:23,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:28:23,707 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:28:23,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:28:24,004 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:28:24,004 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:28:24,004 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 05:28:24,004 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:28:24,005 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 05:28:24,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 05:28:24,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 05:28:24,006 INFO L87 Difference]: Start difference. First operand 973 states and 1540 transitions. Second operand 6 states. [2018-10-27 05:28:27,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:28:27,029 INFO L93 Difference]: Finished difference Result 2353 states and 3939 transitions. [2018-10-27 05:28:27,030 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 05:28:27,030 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 171 [2018-10-27 05:28:27,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:28:27,041 INFO L225 Difference]: With dead ends: 2353 [2018-10-27 05:28:27,042 INFO L226 Difference]: Without dead ends: 1386 [2018-10-27 05:28:27,046 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 05:28:27,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1386 states. [2018-10-27 05:28:27,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1386 to 1352. [2018-10-27 05:28:27,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1352 states. [2018-10-27 05:28:27,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 2126 transitions. [2018-10-27 05:28:27,103 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 2126 transitions. Word has length 171 [2018-10-27 05:28:27,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:28:27,104 INFO L481 AbstractCegarLoop]: Abstraction has 1352 states and 2126 transitions. [2018-10-27 05:28:27,104 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 05:28:27,104 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 2126 transitions. [2018-10-27 05:28:27,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2018-10-27 05:28:27,109 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:28:27,109 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:28:27,110 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:28:27,110 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:28:27,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1467266075, now seen corresponding path program 1 times [2018-10-27 05:28:27,110 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:28:27,111 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:28:27,111 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:28:27,111 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:28:27,112 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:28:27,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:28:27,521 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 121 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:28:27,521 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:28:27,521 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:28:27,522 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 192 with the following transitions: [2018-10-27 05:28:27,524 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [141], [143], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [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], [522], [523], [527], [531], [535], [539], [543], [547], [550], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 05:28:27,568 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:28:27,568 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:28:28,005 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 05:28:28,007 INFO L272 AbstractInterpreter]: Visited 89 different actions 89 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 05:28:28,049 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:28:28,049 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 05:28:28,623 INFO L227 lantSequenceWeakener]: Weakened 182 states. On average, predicates are now at 77.62% of their original sizes. [2018-10-27 05:28:28,624 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 05:28:28,891 INFO L415 sIntCurrentIteration]: We unified 190 AI predicates to 190 [2018-10-27 05:28:28,892 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 05:28:28,893 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 05:28:28,893 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-10-27 05:28:28,893 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:28:28,894 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 05:28:28,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 05:28:28,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 05:28:28,895 INFO L87 Difference]: Start difference. First operand 1352 states and 2126 transitions. Second operand 6 states. [2018-10-27 05:29:01,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:29:01,901 INFO L93 Difference]: Finished difference Result 2883 states and 4473 transitions. [2018-10-27 05:29:01,902 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 05:29:01,902 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 191 [2018-10-27 05:29:01,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:29:01,910 INFO L225 Difference]: With dead ends: 2883 [2018-10-27 05:29:01,911 INFO L226 Difference]: Without dead ends: 1537 [2018-10-27 05:29:01,916 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 191 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-27 05:29:01,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1537 states. [2018-10-27 05:29:01,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1537 to 1535. [2018-10-27 05:29:01,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1535 states. [2018-10-27 05:29:01,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1535 states to 1535 states and 2316 transitions. [2018-10-27 05:29:01,964 INFO L78 Accepts]: Start accepts. Automaton has 1535 states and 2316 transitions. Word has length 191 [2018-10-27 05:29:01,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:29:01,965 INFO L481 AbstractCegarLoop]: Abstraction has 1535 states and 2316 transitions. [2018-10-27 05:29:01,965 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 05:29:01,965 INFO L276 IsEmpty]: Start isEmpty. Operand 1535 states and 2316 transitions. [2018-10-27 05:29:01,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2018-10-27 05:29:01,972 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:29:01,972 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:29:01,973 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:29:01,973 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:29:01,973 INFO L82 PathProgramCache]: Analyzing trace with hash -368059732, now seen corresponding path program 1 times [2018-10-27 05:29:01,974 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:29:01,975 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:29:01,977 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:29:01,977 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:29:01,977 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:29:02,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:29:02,938 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 156 proven. 146 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 05:29:02,938 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:29:02,938 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:29:02,939 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 277 with the following transitions: [2018-10-27 05:29:02,939 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [141], [143], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [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], [522], [523], [527], [531], [535], [539], [543], [547], [550], [551], [554], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 05:29:02,946 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:29:02,946 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:29:03,068 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 05:29:03,069 INFO L272 AbstractInterpreter]: Visited 94 different actions 181 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 05:29:03,099 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:29:03,099 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 05:29:03,398 INFO L227 lantSequenceWeakener]: Weakened 273 states. On average, predicates are now at 77.6% of their original sizes. [2018-10-27 05:29:03,398 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 05:29:03,992 INFO L415 sIntCurrentIteration]: We unified 275 AI predicates to 275 [2018-10-27 05:29:03,993 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 05:29:03,993 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 05:29:03,993 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [12] total 20 [2018-10-27 05:29:03,993 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:29:03,994 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-27 05:29:03,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-27 05:29:03,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-10-27 05:29:03,994 INFO L87 Difference]: Start difference. First operand 1535 states and 2316 transitions. Second operand 10 states. [2018-10-27 05:29:37,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:29:37,365 INFO L93 Difference]: Finished difference Result 3448 states and 5135 transitions. [2018-10-27 05:29:37,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-27 05:29:37,365 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 276 [2018-10-27 05:29:37,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:29:37,377 INFO L225 Difference]: With dead ends: 3448 [2018-10-27 05:29:37,377 INFO L226 Difference]: Without dead ends: 2102 [2018-10-27 05:29:37,383 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 284 GetRequests, 267 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2018-10-27 05:29:37,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2102 states. [2018-10-27 05:29:37,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2102 to 2099. [2018-10-27 05:29:37,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2099 states. [2018-10-27 05:29:37,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2099 states to 2099 states and 2933 transitions. [2018-10-27 05:29:37,439 INFO L78 Accepts]: Start accepts. Automaton has 2099 states and 2933 transitions. Word has length 276 [2018-10-27 05:29:37,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:29:37,439 INFO L481 AbstractCegarLoop]: Abstraction has 2099 states and 2933 transitions. [2018-10-27 05:29:37,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-27 05:29:37,440 INFO L276 IsEmpty]: Start isEmpty. Operand 2099 states and 2933 transitions. [2018-10-27 05:29:37,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2018-10-27 05:29:37,447 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:29:37,448 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:29:37,448 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:29:37,448 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:29:37,448 INFO L82 PathProgramCache]: Analyzing trace with hash 783648596, now seen corresponding path program 1 times [2018-10-27 05:29:37,448 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:29:37,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:29:37,450 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:29:37,450 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:29:37,450 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:29:37,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:29:38,170 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 224 proven. 2 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2018-10-27 05:29:38,171 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:29:38,171 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:29:38,172 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 329 with the following transitions: [2018-10-27 05:29:38,172 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [141], [143], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [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], [522], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 05:29:38,177 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:29:38,177 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:29:42,804 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 05:29:42,805 INFO L272 AbstractInterpreter]: Visited 120 different actions 361 times. Merged at 8 different actions 23 times. Never widened. Found 4 fixpoints after 2 different actions. Largest state had 24 variables. [2018-10-27 05:29:42,811 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:29:42,811 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 05:29:43,696 INFO L227 lantSequenceWeakener]: Weakened 325 states. On average, predicates are now at 80.16% of their original sizes. [2018-10-27 05:29:43,696 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 05:29:43,824 INFO L415 sIntCurrentIteration]: We unified 327 AI predicates to 327 [2018-10-27 05:29:43,825 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 05:29:43,825 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 05:29:43,825 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [7] total 14 [2018-10-27 05:29:43,825 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:29:43,826 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 05:29:43,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 05:29:43,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-10-27 05:29:43,827 INFO L87 Difference]: Start difference. First operand 2099 states and 2933 transitions. Second operand 9 states. [2018-10-27 05:30:10,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:30:10,843 INFO L93 Difference]: Finished difference Result 4861 states and 7003 transitions. [2018-10-27 05:30:10,844 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-27 05:30:10,844 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 328 [2018-10-27 05:30:10,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:30:10,859 INFO L225 Difference]: With dead ends: 4861 [2018-10-27 05:30:10,859 INFO L226 Difference]: Without dead ends: 2951 [2018-10-27 05:30:10,871 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 336 GetRequests, 320 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2018-10-27 05:30:10,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2018-10-27 05:30:10,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 2739. [2018-10-27 05:30:10,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2739 states. [2018-10-27 05:30:10,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2739 states to 2739 states and 3728 transitions. [2018-10-27 05:30:10,960 INFO L78 Accepts]: Start accepts. Automaton has 2739 states and 3728 transitions. Word has length 328 [2018-10-27 05:30:10,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:30:10,961 INFO L481 AbstractCegarLoop]: Abstraction has 2739 states and 3728 transitions. [2018-10-27 05:30:10,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 05:30:10,961 INFO L276 IsEmpty]: Start isEmpty. Operand 2739 states and 3728 transitions. [2018-10-27 05:30:10,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2018-10-27 05:30:10,976 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:30:10,976 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-27 05:30:10,977 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:30:10,977 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:30:10,977 INFO L82 PathProgramCache]: Analyzing trace with hash -1934643041, now seen corresponding path program 1 times [2018-10-27 05:30:10,978 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:30:10,978 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:30:10,979 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:30:10,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:30:10,979 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:30:11,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:30:12,049 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 290 proven. 232 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-10-27 05:30:12,050 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:30:12,050 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:30:12,050 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 424 with the following transitions: [2018-10-27 05:30:12,050 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [141], [143], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [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], [510], [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], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [658], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 05:30:12,055 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:30:12,056 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:30:15,741 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 05:30:15,741 INFO L272 AbstractInterpreter]: Visited 123 different actions 240 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 05:30:15,751 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:30:15,751 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 05:30:17,770 INFO L227 lantSequenceWeakener]: Weakened 420 states. On average, predicates are now at 77.52% of their original sizes. [2018-10-27 05:30:17,770 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 05:30:17,901 INFO L415 sIntCurrentIteration]: We unified 422 AI predicates to 422 [2018-10-27 05:30:17,901 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 05:30:17,901 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 05:30:17,902 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [14] total 22 [2018-10-27 05:30:17,902 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:30:17,903 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-27 05:30:17,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-27 05:30:17,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-10-27 05:30:17,903 INFO L87 Difference]: Start difference. First operand 2739 states and 3728 transitions. Second operand 10 states. [2018-10-27 05:30:34,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:30:34,229 INFO L93 Difference]: Finished difference Result 5477 states and 7472 transitions. [2018-10-27 05:30:34,229 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-27 05:30:34,230 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 423 [2018-10-27 05:30:34,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:30:34,241 INFO L225 Difference]: With dead ends: 5477 [2018-10-27 05:30:34,242 INFO L226 Difference]: Without dead ends: 2927 [2018-10-27 05:30:34,249 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 430 GetRequests, 414 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2018-10-27 05:30:34,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2927 states. [2018-10-27 05:30:34,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2927 to 2924. [2018-10-27 05:30:34,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2924 states. [2018-10-27 05:30:34,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2924 states to 2924 states and 3927 transitions. [2018-10-27 05:30:34,318 INFO L78 Accepts]: Start accepts. Automaton has 2924 states and 3927 transitions. Word has length 423 [2018-10-27 05:30:34,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:30:34,318 INFO L481 AbstractCegarLoop]: Abstraction has 2924 states and 3927 transitions. [2018-10-27 05:30:34,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-27 05:30:34,319 INFO L276 IsEmpty]: Start isEmpty. Operand 2924 states and 3927 transitions. [2018-10-27 05:30:34,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2018-10-27 05:30:34,330 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:30:34,331 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:30:34,331 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:30:34,331 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:30:34,332 INFO L82 PathProgramCache]: Analyzing trace with hash -1714862405, now seen corresponding path program 1 times [2018-10-27 05:30:34,332 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:30:34,333 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:30:34,333 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:30:34,333 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:30:34,333 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:30:34,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:30:34,751 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2018-10-27 05:30:34,752 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:30:34,752 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 05:30:34,752 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:30:34,753 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 05:30:34,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 05:30:34,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 05:30:34,754 INFO L87 Difference]: Start difference. First operand 2924 states and 3927 transitions. Second operand 4 states. [2018-10-27 05:30:36,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:30:36,736 INFO L93 Difference]: Finished difference Result 5573 states and 7953 transitions. [2018-10-27 05:30:36,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 05:30:36,744 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 431 [2018-10-27 05:30:36,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:30:36,762 INFO L225 Difference]: With dead ends: 5573 [2018-10-27 05:30:36,762 INFO L226 Difference]: Without dead ends: 3578 [2018-10-27 05:30:36,775 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 05:30:36,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3578 states. [2018-10-27 05:30:36,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3578 to 3578. [2018-10-27 05:30:36,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3578 states. [2018-10-27 05:30:36,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3578 states to 3578 states and 4677 transitions. [2018-10-27 05:30:36,863 INFO L78 Accepts]: Start accepts. Automaton has 3578 states and 4677 transitions. Word has length 431 [2018-10-27 05:30:36,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:30:36,864 INFO L481 AbstractCegarLoop]: Abstraction has 3578 states and 4677 transitions. [2018-10-27 05:30:36,864 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 05:30:36,864 INFO L276 IsEmpty]: Start isEmpty. Operand 3578 states and 4677 transitions. [2018-10-27 05:30:36,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 509 [2018-10-27 05:30:36,883 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:30:36,883 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:30:36,884 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:30:36,884 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:30:36,884 INFO L82 PathProgramCache]: Analyzing trace with hash 820386352, now seen corresponding path program 1 times [2018-10-27 05:30:36,884 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:30:36,885 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:30:36,885 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:30:36,885 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:30:36,886 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:30:36,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:30:37,540 INFO L134 CoverageAnalysis]: Checked inductivity of 967 backedges. 213 proven. 273 refuted. 0 times theorem prover too weak. 481 trivial. 0 not checked. [2018-10-27 05:30:37,541 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:30:37,541 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:30:37,541 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 509 with the following transitions: [2018-10-27 05:30:37,542 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [141], [143], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [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], [510], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [594], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [658], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 05:30:37,545 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:30:37,545 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:30:44,273 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 05:30:44,273 INFO L272 AbstractInterpreter]: Visited 125 different actions 505 times. Merged at 10 different actions 41 times. Widened at 1 different actions 1 times. Found 10 fixpoints after 3 different actions. Largest state had 24 variables. [2018-10-27 05:30:44,283 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:30:44,284 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 05:30:44,284 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:30:44,284 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 05:30:44,294 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:30:44,294 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 05:30:44,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:30:44,461 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 05:30:44,815 INFO L134 CoverageAnalysis]: Checked inductivity of 967 backedges. 650 proven. 2 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2018-10-27 05:30:44,815 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 05:30:45,595 INFO L134 CoverageAnalysis]: Checked inductivity of 967 backedges. 213 proven. 273 refuted. 0 times theorem prover too weak. 481 trivial. 0 not checked. [2018-10-27 05:30:45,632 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 05:30:45,633 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-10-27 05:30:45,633 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 05:30:45,634 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 05:30:45,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 05:30:45,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-10-27 05:30:45,636 INFO L87 Difference]: Start difference. First operand 3578 states and 4677 transitions. Second operand 9 states. [2018-10-27 05:30:52,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:30:52,328 INFO L93 Difference]: Finished difference Result 9279 states and 12905 transitions. [2018-10-27 05:30:52,328 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-27 05:30:52,328 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 508 [2018-10-27 05:30:52,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:30:52,354 INFO L225 Difference]: With dead ends: 9279 [2018-10-27 05:30:52,354 INFO L226 Difference]: Without dead ends: 5706 [2018-10-27 05:30:52,377 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1066 GetRequests, 1033 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=245, Invalid=747, Unknown=0, NotChecked=0, Total=992 [2018-10-27 05:30:52,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5706 states. [2018-10-27 05:30:52,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5706 to 5612. [2018-10-27 05:30:52,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5612 states. [2018-10-27 05:30:52,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5612 states to 5612 states and 6819 transitions. [2018-10-27 05:30:52,540 INFO L78 Accepts]: Start accepts. Automaton has 5612 states and 6819 transitions. Word has length 508 [2018-10-27 05:30:52,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:30:52,540 INFO L481 AbstractCegarLoop]: Abstraction has 5612 states and 6819 transitions. [2018-10-27 05:30:52,541 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 05:30:52,541 INFO L276 IsEmpty]: Start isEmpty. Operand 5612 states and 6819 transitions. [2018-10-27 05:30:52,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2018-10-27 05:30:52,555 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:30:52,556 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:30:52,556 INFO L424 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:30:52,557 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:30:52,557 INFO L82 PathProgramCache]: Analyzing trace with hash -417965624, now seen corresponding path program 1 times [2018-10-27 05:30:52,557 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:30:52,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:30:52,558 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:30:52,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:30:52,558 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:30:52,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:30:53,798 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-10-27 05:30:54,612 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 326 proven. 289 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-10-27 05:30:54,612 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:30:54,612 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:30:54,613 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 527 with the following transitions: [2018-10-27 05:30:54,613 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [141], [143], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [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], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 05:30:54,619 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:30:54,620 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:31:01,340 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 05:31:01,341 INFO L272 AbstractInterpreter]: Visited 191 different actions 763 times. Merged at 9 different actions 35 times. Widened at 1 different actions 1 times. Found 7 fixpoints after 3 different actions. Largest state had 24 variables. [2018-10-27 05:31:01,346 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:31:01,346 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 05:31:01,346 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:31:01,346 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 05:31:01,355 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:31:01,355 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 05:31:01,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:31:01,491 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 05:31:01,969 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 575 proven. 2 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2018-10-27 05:31:01,970 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 05:31:02,281 WARN L179 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2018-10-27 05:31:02,868 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 324 proven. 94 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2018-10-27 05:31:02,892 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 05:31:02,893 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 6, 6] total 20 [2018-10-27 05:31:02,893 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 05:31:02,894 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-27 05:31:02,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-27 05:31:02,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2018-10-27 05:31:02,894 INFO L87 Difference]: Start difference. First operand 5612 states and 6819 transitions. Second operand 17 states. [2018-10-27 05:31:05,930 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2018-10-27 05:31:06,284 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2018-10-27 05:31:08,159 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2018-10-27 05:31:08,977 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 38 [2018-10-27 05:31:11,123 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 45 [2018-10-27 05:31:13,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:31:13,746 INFO L93 Difference]: Finished difference Result 12485 states and 15826 transitions. [2018-10-27 05:31:13,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-10-27 05:31:13,747 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 526 [2018-10-27 05:31:13,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:31:13,774 INFO L225 Difference]: With dead ends: 12485 [2018-10-27 05:31:13,775 INFO L226 Difference]: Without dead ends: 5948 [2018-10-27 05:31:13,806 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1146 GetRequests, 1083 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1118 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=875, Invalid=3285, Unknown=0, NotChecked=0, Total=4160 [2018-10-27 05:31:13,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5948 states. [2018-10-27 05:31:13,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5948 to 5644. [2018-10-27 05:31:13,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5644 states. [2018-10-27 05:31:13,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5644 states to 5644 states and 6717 transitions. [2018-10-27 05:31:13,944 INFO L78 Accepts]: Start accepts. Automaton has 5644 states and 6717 transitions. Word has length 526 [2018-10-27 05:31:13,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:31:13,945 INFO L481 AbstractCegarLoop]: Abstraction has 5644 states and 6717 transitions. [2018-10-27 05:31:13,945 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-27 05:31:13,945 INFO L276 IsEmpty]: Start isEmpty. Operand 5644 states and 6717 transitions. [2018-10-27 05:31:13,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2018-10-27 05:31:13,960 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:31:13,961 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:31:13,961 INFO L424 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:31:13,961 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:31:13,961 INFO L82 PathProgramCache]: Analyzing trace with hash 725218240, now seen corresponding path program 1 times [2018-10-27 05:31:13,962 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:31:13,962 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:31:13,963 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:31:13,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:31:13,963 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:31:14,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:31:15,487 INFO L134 CoverageAnalysis]: Checked inductivity of 1023 backedges. 434 proven. 425 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2018-10-27 05:31:15,487 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:31:15,487 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:31:15,488 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 533 with the following transitions: [2018-10-27 05:31:15,488 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [141], [143], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [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], [506], [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], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 05:31:15,492 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:31:15,492 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:31:25,589 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 05:31:25,589 INFO L272 AbstractInterpreter]: Visited 125 different actions 496 times. Merged at 9 different actions 32 times. Never widened. Found 8 fixpoints after 4 different actions. Largest state had 24 variables. [2018-10-27 05:31:25,596 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:31:25,596 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 05:31:25,596 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:31:25,596 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 [2018-10-27 05:31:25,607 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:31:25,607 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 05:31:25,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:31:25,762 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 05:31:26,199 INFO L134 CoverageAnalysis]: Checked inductivity of 1023 backedges. 747 proven. 2 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2018-10-27 05:31:26,199 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 05:31:27,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1023 backedges. 428 proven. 94 refuted. 0 times theorem prover too weak. 501 trivial. 0 not checked. [2018-10-27 05:31:27,141 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 05:31:27,141 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5] total 19 [2018-10-27 05:31:27,141 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 05:31:27,142 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-27 05:31:27,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-27 05:31:27,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2018-10-27 05:31:27,143 INFO L87 Difference]: Start difference. First operand 5644 states and 6717 transitions. Second operand 17 states. [2018-10-27 05:31:32,707 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 32 [2018-10-27 05:31:33,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:31:33,747 INFO L93 Difference]: Finished difference Result 12452 states and 15610 transitions. [2018-10-27 05:31:33,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-27 05:31:33,747 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 532 [2018-10-27 05:31:33,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:31:33,774 INFO L225 Difference]: With dead ends: 12452 [2018-10-27 05:31:33,774 INFO L226 Difference]: Without dead ends: 5941 [2018-10-27 05:31:33,798 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1120 GetRequests, 1074 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=500, Invalid=1662, Unknown=0, NotChecked=0, Total=2162 [2018-10-27 05:31:33,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5941 states. [2018-10-27 05:31:33,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5941 to 5808. [2018-10-27 05:31:33,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5808 states. [2018-10-27 05:31:33,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5808 states to 5808 states and 6576 transitions. [2018-10-27 05:31:33,914 INFO L78 Accepts]: Start accepts. Automaton has 5808 states and 6576 transitions. Word has length 532 [2018-10-27 05:31:33,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:31:33,915 INFO L481 AbstractCegarLoop]: Abstraction has 5808 states and 6576 transitions. [2018-10-27 05:31:33,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-27 05:31:33,915 INFO L276 IsEmpty]: Start isEmpty. Operand 5808 states and 6576 transitions. [2018-10-27 05:31:33,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 638 [2018-10-27 05:31:33,924 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:31:33,924 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:31:33,925 INFO L424 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:31:33,925 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:31:33,925 INFO L82 PathProgramCache]: Analyzing trace with hash 512824619, now seen corresponding path program 2 times [2018-10-27 05:31:33,925 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:31:33,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:31:33,926 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:31:33,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:31:33,927 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:31:33,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:31:34,672 INFO L134 CoverageAnalysis]: Checked inductivity of 1158 backedges. 466 proven. 94 refuted. 0 times theorem prover too weak. 598 trivial. 0 not checked. [2018-10-27 05:31:34,673 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:31:34,673 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:31:34,673 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-10-27 05:31:34,673 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-27 05:31:34,673 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:31:34,673 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 [2018-10-27 05:31:34,683 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-27 05:31:34,683 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-10-27 05:31:34,796 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-10-27 05:31:34,796 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-27 05:31:34,806 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 05:31:35,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1158 backedges. 696 proven. 44 refuted. 0 times theorem prover too weak. 418 trivial. 0 not checked. [2018-10-27 05:31:35,537 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 05:31:36,205 INFO L134 CoverageAnalysis]: Checked inductivity of 1158 backedges. 734 proven. 94 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2018-10-27 05:31:36,226 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 05:31:36,226 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 14 [2018-10-27 05:31:36,226 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 05:31:36,227 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 05:31:36,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 05:31:36,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2018-10-27 05:31:36,229 INFO L87 Difference]: Start difference. First operand 5808 states and 6576 transitions. Second operand 9 states. [2018-10-27 05:31:40,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:31:40,919 INFO L93 Difference]: Finished difference Result 16377 states and 22248 transitions. [2018-10-27 05:31:40,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-27 05:31:40,919 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 637 [2018-10-27 05:31:40,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:31:40,984 INFO L225 Difference]: With dead ends: 16377 [2018-10-27 05:31:40,984 INFO L226 Difference]: Without dead ends: 10612 [2018-10-27 05:31:41,033 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1294 GetRequests, 1272 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=144, Invalid=318, Unknown=0, NotChecked=0, Total=462 [2018-10-27 05:31:41,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10612 states. [2018-10-27 05:31:41,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10612 to 10113. [2018-10-27 05:31:41,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10113 states. [2018-10-27 05:31:41,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10113 states to 10113 states and 11780 transitions. [2018-10-27 05:31:41,376 INFO L78 Accepts]: Start accepts. Automaton has 10113 states and 11780 transitions. Word has length 637 [2018-10-27 05:31:41,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:31:41,377 INFO L481 AbstractCegarLoop]: Abstraction has 10113 states and 11780 transitions. [2018-10-27 05:31:41,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 05:31:41,377 INFO L276 IsEmpty]: Start isEmpty. Operand 10113 states and 11780 transitions. [2018-10-27 05:31:41,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 645 [2018-10-27 05:31:41,387 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:31:41,388 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:31:41,388 INFO L424 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:31:41,389 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:31:41,389 INFO L82 PathProgramCache]: Analyzing trace with hash -982755100, now seen corresponding path program 1 times [2018-10-27 05:31:41,389 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:31:41,390 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:31:41,390 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 05:31:41,390 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:31:41,390 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:31:41,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:31:42,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1165 backedges. 473 proven. 94 refuted. 0 times theorem prover too weak. 598 trivial. 0 not checked. [2018-10-27 05:31:42,264 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:31:42,264 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:31:42,265 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 645 with the following transitions: [2018-10-27 05:31:42,265 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [141], [143], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [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], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [686], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 05:31:42,269 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:31:42,269 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:31:47,932 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 05:31:47,932 INFO L272 AbstractInterpreter]: Visited 192 different actions 770 times. Merged at 10 different actions 38 times. Widened at 1 different actions 1 times. Found 9 fixpoints after 4 different actions. Largest state had 24 variables. [2018-10-27 05:31:47,938 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:31:47,938 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 05:31:47,938 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:31:47,938 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 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 [2018-10-27 05:31:47,946 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:31:47,946 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 05:31:48,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:31:48,106 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 05:31:48,371 INFO L134 CoverageAnalysis]: Checked inductivity of 1165 backedges. 814 proven. 2 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2018-10-27 05:31:48,371 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 05:31:48,940 INFO L134 CoverageAnalysis]: Checked inductivity of 1165 backedges. 473 proven. 94 refuted. 0 times theorem prover too weak. 598 trivial. 0 not checked. [2018-10-27 05:31:48,962 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 05:31:48,963 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2018-10-27 05:31:48,963 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 05:31:48,964 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-27 05:31:48,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-27 05:31:48,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-10-27 05:31:48,964 INFO L87 Difference]: Start difference. First operand 10113 states and 11780 transitions. Second operand 7 states. [2018-10-27 05:31:51,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:31:51,750 INFO L93 Difference]: Finished difference Result 23452 states and 31831 transitions. [2018-10-27 05:31:51,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-27 05:31:51,751 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 644 [2018-10-27 05:31:51,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:31:51,861 INFO L225 Difference]: With dead ends: 23452 [2018-10-27 05:31:51,861 INFO L226 Difference]: Without dead ends: 13713 [2018-10-27 05:31:51,937 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1305 GetRequests, 1291 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2018-10-27 05:31:51,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13713 states. [2018-10-27 05:31:52,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13713 to 13175. [2018-10-27 05:31:52,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13175 states. [2018-10-27 05:31:52,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13175 states to 13175 states and 15703 transitions. [2018-10-27 05:31:52,406 INFO L78 Accepts]: Start accepts. Automaton has 13175 states and 15703 transitions. Word has length 644 [2018-10-27 05:31:52,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:31:52,407 INFO L481 AbstractCegarLoop]: Abstraction has 13175 states and 15703 transitions. [2018-10-27 05:31:52,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-27 05:31:52,407 INFO L276 IsEmpty]: Start isEmpty. Operand 13175 states and 15703 transitions. [2018-10-27 05:31:52,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 772 [2018-10-27 05:31:52,418 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:31:52,419 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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] [2018-10-27 05:31:52,419 INFO L424 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:31:52,419 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:31:52,420 INFO L82 PathProgramCache]: Analyzing trace with hash -1736323801, now seen corresponding path program 1 times [2018-10-27 05:31:52,420 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:31:52,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:31:52,421 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:31:52,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:31:52,421 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:31:52,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:31:53,141 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-27 05:31:53,347 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-27 05:31:53,574 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-27 05:31:53,824 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-10-27 05:31:55,257 INFO L134 CoverageAnalysis]: Checked inductivity of 1742 backedges. 510 proven. 827 refuted. 0 times theorem prover too weak. 405 trivial. 0 not checked. [2018-10-27 05:31:55,258 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:31:55,258 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:31:55,258 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 772 with the following transitions: [2018-10-27 05:31:55,258 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [141], [143], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [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], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [750], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 05:31:55,261 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:31:55,261 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-10-27 05:31:59,127 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-10-27 05:31:59,128 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-10-27 05:31:59,128 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-27 05:31:59,128 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:31:59,128 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 [2018-10-27 05:31:59,135 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:31:59,136 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 05:31:59,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:31:59,324 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 05:31:59,359 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-27 05:31:59,560 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 05:31:59,561 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 05:31:59,566 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 05:31:59,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 05:31:59 BoogieIcfgContainer [2018-10-27 05:31:59,566 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 05:31:59,567 INFO L168 Benchmark]: Toolchain (without parser) took 230270.75 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -712.7 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-10-27 05:31:59,568 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 05:31:59,568 INFO L168 Benchmark]: CACSL2BoogieTranslator took 858.45 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-10-27 05:31:59,569 INFO L168 Benchmark]: Boogie Procedure Inliner took 219.53 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 710.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -806.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2018-10-27 05:31:59,570 INFO L168 Benchmark]: Boogie Preprocessor took 114.74 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2018-10-27 05:31:59,571 INFO L168 Benchmark]: RCFGBuilder took 3891.11 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 132.8 MB). Peak memory consumption was 132.8 MB. Max. memory is 7.1 GB. [2018-10-27 05:31:59,572 INFO L168 Benchmark]: TraceAbstraction took 225181.03 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 2.1 GB in the end (delta: -95.1 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-10-27 05:31:59,577 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 858.45 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 219.53 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 710.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -806.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 114.74 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3891.11 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 132.8 MB). Peak memory consumption was 132.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 225181.03 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 2.1 GB in the end (delta: -95.1 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 73]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 73). Cancelled while BasicCegarLoop was analyzing trace of length 772 with TraceHistMax 7,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 14 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 225.1s OverallTime, 14 OverallIterations, 7 TraceHistogramMax, 155.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1781 SDtfs, 20624 SDslu, 2797 SDs, 0 SdLazy, 26535 SolverSat, 5031 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 112.9s Time, PredicateUnifierStatistics: 8 DeclaredPredicates, 7201 GetRequests, 6950 SyntacticMatches, 10 SemanticMatches, 241 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2140 ImplicationChecksByTransitivity, 11.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13175occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 42.1s AbstIntTime, 9 AbstIntIterations, 4 AbstIntStrong, 0.9967939327093027 AbsIntWeakeningRatio, 0.10543657331136738 AbsIntAvgWeakeningVarsNumRemoved, 15.93986820428336 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.7s AutomataMinimizationTime, 13 MinimizatonAttempts, 1837 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 13.3s InterpolantComputationTime, 7651 NumberOfCodeBlocks, 7430 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 10475 ConstructedInterpolants, 0 QuantifiedInterpolants, 21769882 SizeOfPredicates, 17 NumberOfNonLiveVariables, 3998 ConjunctsInSsa, 54 ConjunctsInUnsatCore, 23 InterpolantComputations, 4 PerfectInterpolantSequences, 14629/16887 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown