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/Problem17_label38_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-25 01:59:00,431 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-25 01:59:00,433 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-25 01:59:00,451 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-25 01:59:00,452 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-25 01:59:00,453 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-25 01:59:00,454 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-25 01:59:00,456 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-25 01:59:00,458 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-25 01:59:00,458 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-25 01:59:00,459 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-25 01:59:00,460 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-25 01:59:00,461 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-25 01:59:00,462 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-25 01:59:00,463 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-25 01:59:00,464 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-25 01:59:00,465 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-25 01:59:00,466 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-25 01:59:00,469 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-25 01:59:00,471 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-25 01:59:00,472 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-25 01:59:00,473 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-25 01:59:00,476 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-25 01:59:00,492 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-25 01:59:00,523 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-25 01:59:00,523 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-25 01:59:00,524 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-25 01:59:00,524 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-25 01:59:00,524 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-25 01:59:00,525 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-25 01:59:00,525 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-25 01:59:00,525 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-25 01:59:00,525 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-25 01:59:00,525 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-25 01:59:00,526 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-25 01:59:00,526 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-25 01:59:00,526 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-25 01:59:00,526 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-25 01:59:00,527 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-25 01:59:00,527 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-25 01:59:00,528 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-25 01:59:00,528 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-25 01:59:00,528 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-25 01:59:00,528 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-25 01:59:00,528 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-25 01:59:00,528 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-25 01:59:00,529 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-25 01:59:00,529 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-25 01:59:00,529 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-25 01:59:00,529 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-25 01:59:00,529 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-25 01:59:00,530 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-25 01:59:00,530 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-25 01:59:00,530 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-25 01:59:00,530 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-25 01:59:00,531 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-25 01:59:00,531 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-25 01:59:00,531 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-25 01:59:00,531 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-25 01:59:00,531 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-25 01:59:00,581 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-25 01:59:00,597 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-25 01:59:00,602 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-25 01:59:00,608 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-25 01:59:00,608 INFO L276 PluginConnector]: CDTParser initialized [2018-10-25 01:59:00,609 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label38_true-unreach-call.c [2018-10-25 01:59:00,680 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ed3af7025/0d4772c7c2d246a7879afe925871c216/FLAG40b8034f8 [2018-10-25 01:59:01,360 INFO L298 CDTParser]: Found 1 translation units. [2018-10-25 01:59:01,361 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label38_true-unreach-call.c [2018-10-25 01:59:01,383 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ed3af7025/0d4772c7c2d246a7879afe925871c216/FLAG40b8034f8 [2018-10-25 01:59:01,398 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ed3af7025/0d4772c7c2d246a7879afe925871c216 [2018-10-25 01:59:01,410 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-25 01:59:01,411 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-25 01:59:01,412 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-25 01:59:01,413 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-25 01:59:01,419 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-25 01:59:01,420 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 01:59:01" (1/1) ... [2018-10-25 01:59:01,423 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@694b18b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:59:01, skipping insertion in model container [2018-10-25 01:59:01,423 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 01:59:01" (1/1) ... [2018-10-25 01:59:01,434 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-25 01:59:01,565 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-25 01:59:02,542 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 01:59:02,548 INFO L189 MainTranslator]: Completed pre-run [2018-10-25 01:59:02,988 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 01:59:03,013 INFO L193 MainTranslator]: Completed translation [2018-10-25 01:59:03,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:59:03 WrapperNode [2018-10-25 01:59:03,014 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-25 01:59:03,014 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-25 01:59:03,015 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-25 01:59:03,015 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-25 01:59:03,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:59:03" (1/1) ... [2018-10-25 01:59:03,073 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:59:03" (1/1) ... [2018-10-25 01:59:03,480 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-25 01:59:03,481 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-25 01:59:03,481 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-25 01:59:03,481 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-25 01:59:03,492 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:59:03" (1/1) ... [2018-10-25 01:59:03,492 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:59:03" (1/1) ... [2018-10-25 01:59:03,512 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:59:03" (1/1) ... [2018-10-25 01:59:03,513 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:59:03" (1/1) ... [2018-10-25 01:59:03,630 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:59:03" (1/1) ... [2018-10-25 01:59:03,662 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:59:03" (1/1) ... [2018-10-25 01:59:03,695 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:59:03" (1/1) ... [2018-10-25 01:59:03,726 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-25 01:59:03,726 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-25 01:59:03,727 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-25 01:59:03,727 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-25 01:59:03,728 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:59:03" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-25 01:59:03,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-25 01:59:03,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-25 01:59:03,798 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-25 01:59:03,798 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-25 01:59:03,798 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-25 01:59:03,798 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-25 01:59:03,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-25 01:59:03,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-25 01:59:03,799 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-25 01:59:03,799 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-25 01:59:17,228 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-25 01:59:17,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 01:59:17 BoogieIcfgContainer [2018-10-25 01:59:17,230 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-25 01:59:17,231 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-25 01:59:17,231 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-25 01:59:17,235 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-25 01:59:17,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 01:59:01" (1/3) ... [2018-10-25 01:59:17,236 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46674a43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 01:59:17, skipping insertion in model container [2018-10-25 01:59:17,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:59:03" (2/3) ... [2018-10-25 01:59:17,236 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46674a43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 01:59:17, skipping insertion in model container [2018-10-25 01:59:17,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 01:59:17" (3/3) ... [2018-10-25 01:59:17,239 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label38_true-unreach-call.c [2018-10-25 01:59:17,249 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-25 01:59:17,259 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-25 01:59:17,277 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-25 01:59:17,322 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-25 01:59:17,322 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-25 01:59:17,322 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-25 01:59:17,323 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-25 01:59:17,323 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-25 01:59:17,323 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-25 01:59:17,323 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-25 01:59:17,323 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-25 01:59:17,373 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-10-25 01:59:17,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-10-25 01:59:17,384 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:59:17,386 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:59:17,390 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:59:17,397 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:59:17,397 INFO L82 PathProgramCache]: Analyzing trace with hash 1209803846, now seen corresponding path program 1 times [2018-10-25 01:59:17,400 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:59:17,448 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:59:17,448 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:59:17,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:59:17,449 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:59:17,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:59:17,953 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-10-25 01:59:17,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:59:17,979 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:59:17,979 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-25 01:59:17,980 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:59:17,986 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-25 01:59:18,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-25 01:59:18,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 01:59:18,007 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-10-25 01:59:28,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:59:28,277 INFO L93 Difference]: Finished difference Result 2137 states and 3966 transitions. [2018-10-25 01:59:28,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-25 01:59:28,280 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2018-10-25 01:59:28,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:59:28,311 INFO L225 Difference]: With dead ends: 2137 [2018-10-25 01:59:28,311 INFO L226 Difference]: Without dead ends: 1527 [2018-10-25 01:59:28,324 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 01:59:28,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1527 states. [2018-10-25 01:59:28,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1527 to 1513. [2018-10-25 01:59:28,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1513 states. [2018-10-25 01:59:28,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1513 states to 1513 states and 2344 transitions. [2018-10-25 01:59:28,466 INFO L78 Accepts]: Start accepts. Automaton has 1513 states and 2344 transitions. Word has length 59 [2018-10-25 01:59:28,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:59:28,467 INFO L481 AbstractCegarLoop]: Abstraction has 1513 states and 2344 transitions. [2018-10-25 01:59:28,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-25 01:59:28,467 INFO L276 IsEmpty]: Start isEmpty. Operand 1513 states and 2344 transitions. [2018-10-25 01:59:28,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-10-25 01:59:28,476 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:59:28,477 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:59:28,477 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:59:28,477 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:59:28,478 INFO L82 PathProgramCache]: Analyzing trace with hash -1204069705, now seen corresponding path program 1 times [2018-10-25 01:59:28,478 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:59:28,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:59:28,479 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:59:28,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:59:28,482 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:59:28,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:59:28,807 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:59:28,808 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:59:28,808 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-25 01:59:28,808 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:59:28,810 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-25 01:59:28,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-25 01:59:28,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-25 01:59:28,811 INFO L87 Difference]: Start difference. First operand 1513 states and 2344 transitions. Second operand 5 states. [2018-10-25 01:59:37,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:59:37,260 INFO L93 Difference]: Finished difference Result 4413 states and 7007 transitions. [2018-10-25 01:59:37,267 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-25 01:59:37,267 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 131 [2018-10-25 01:59:37,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:59:37,292 INFO L225 Difference]: With dead ends: 4413 [2018-10-25 01:59:37,292 INFO L226 Difference]: Without dead ends: 2906 [2018-10-25 01:59:37,299 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-25 01:59:37,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2906 states. [2018-10-25 01:59:37,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2906 to 2873. [2018-10-25 01:59:37,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2873 states. [2018-10-25 01:59:37,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2873 states to 2873 states and 4204 transitions. [2018-10-25 01:59:37,419 INFO L78 Accepts]: Start accepts. Automaton has 2873 states and 4204 transitions. Word has length 131 [2018-10-25 01:59:37,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:59:37,420 INFO L481 AbstractCegarLoop]: Abstraction has 2873 states and 4204 transitions. [2018-10-25 01:59:37,420 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-25 01:59:37,420 INFO L276 IsEmpty]: Start isEmpty. Operand 2873 states and 4204 transitions. [2018-10-25 01:59:37,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-10-25 01:59:37,425 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:59:37,425 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:59:37,425 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:59:37,426 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:59:37,426 INFO L82 PathProgramCache]: Analyzing trace with hash 7018449, now seen corresponding path program 1 times [2018-10-25 01:59:37,426 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:59:37,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:59:37,427 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:59:37,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:59:37,427 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:59:37,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:59:37,743 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:59:37,744 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:59:37,744 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:59:37,745 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 135 with the following transitions: [2018-10-25 01:59:37,747 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1054], [1062], [1070], [1078], [1082], [1084], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-25 01:59:37,794 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:59:37,794 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:59:39,598 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:59:39,600 INFO L272 AbstractInterpreter]: Visited 83 different actions 235 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-25 01:59:39,645 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:59:39,647 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:59:39,648 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:59:39,648 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 01:59:39,662 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:59:39,662 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:59:39,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:59:39,802 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 02:00:52,863 WARN L179 SmtUtils]: Spent 1.21 m on a formula simplification. DAG size of input: 147 DAG size of output: 107 [2018-10-25 02:01:45,365 WARN L179 SmtUtils]: Spent 48.23 s on a formula simplification. DAG size of input: 107 DAG size of output: 80 [2018-10-25 02:01:46,045 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 4 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:01:46,046 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 02:01:46,483 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2018-10-25 02:01:50,739 WARN L179 SmtUtils]: Spent 2.03 s on a formula simplification. DAG size of input: 55 DAG size of output: 16 [2018-10-25 02:01:51,145 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2018-10-25 02:01:51,150 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-10-25 02:01:51,696 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 1720