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/Problem03_label58_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-25 00:21:05,766 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-25 00:21:05,768 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-25 00:21:05,781 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-25 00:21:05,781 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-25 00:21:05,782 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-25 00:21:05,783 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-25 00:21:05,785 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-25 00:21:05,787 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-25 00:21:05,788 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-25 00:21:05,789 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-25 00:21:05,790 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-25 00:21:05,791 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-25 00:21:05,792 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-25 00:21:05,793 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-25 00:21:05,793 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-25 00:21:05,794 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-25 00:21:05,796 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-25 00:21:05,798 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-25 00:21:05,800 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-25 00:21:05,801 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-25 00:21:05,803 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-25 00:21:05,805 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-25 00:21:05,815 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 00:21:05,832 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-25 00:21:05,832 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-25 00:21:05,833 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-25 00:21:05,833 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-25 00:21:05,833 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-25 00:21:05,834 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-25 00:21:05,834 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-25 00:21:05,834 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-25 00:21:05,834 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-25 00:21:05,834 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-25 00:21:05,835 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-25 00:21:05,835 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-25 00:21:05,835 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-25 00:21:05,835 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-25 00:21:05,836 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-25 00:21:05,836 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-25 00:21:05,836 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-25 00:21:05,837 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-25 00:21:05,837 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-25 00:21:05,837 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-25 00:21:05,837 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-25 00:21:05,837 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-25 00:21:05,838 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-25 00:21:05,838 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-25 00:21:05,838 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-25 00:21:05,838 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-25 00:21:05,838 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-25 00:21:05,839 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-25 00:21:05,839 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-25 00:21:05,839 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-25 00:21:05,839 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-25 00:21:05,840 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-25 00:21:05,840 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-25 00:21:05,840 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-25 00:21:05,840 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-25 00:21:05,840 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-25 00:21:05,885 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-25 00:21:05,899 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-25 00:21:05,903 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-25 00:21:05,904 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-25 00:21:05,905 INFO L276 PluginConnector]: CDTParser initialized [2018-10-25 00:21:05,906 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label58_true-unreach-call.c [2018-10-25 00:21:05,974 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/3c7748b61/4b8b446642f94ff2abafe6f2ae96f1b7/FLAG4d44227dc [2018-10-25 00:21:06,634 INFO L298 CDTParser]: Found 1 translation units. [2018-10-25 00:21:06,635 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label58_true-unreach-call.c [2018-10-25 00:21:06,656 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/3c7748b61/4b8b446642f94ff2abafe6f2ae96f1b7/FLAG4d44227dc [2018-10-25 00:21:06,675 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/3c7748b61/4b8b446642f94ff2abafe6f2ae96f1b7 [2018-10-25 00:21:06,688 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-25 00:21:06,691 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-25 00:21:06,693 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-25 00:21:06,693 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-25 00:21:06,698 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-25 00:21:06,700 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 12:21:06" (1/1) ... [2018-10-25 00:21:06,704 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b447a6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:21:06, skipping insertion in model container [2018-10-25 00:21:06,704 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 12:21:06" (1/1) ... [2018-10-25 00:21:06,714 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-25 00:21:06,831 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-25 00:21:07,687 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 00:21:07,693 INFO L189 MainTranslator]: Completed pre-run [2018-10-25 00:21:07,924 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 00:21:07,946 INFO L193 MainTranslator]: Completed translation [2018-10-25 00:21:07,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:21:07 WrapperNode [2018-10-25 00:21:07,947 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-25 00:21:07,948 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-25 00:21:07,948 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-25 00:21:07,948 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-25 00:21:07,958 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:21:07" (1/1) ... [2018-10-25 00:21:08,000 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:21:07" (1/1) ... [2018-10-25 00:21:08,259 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-25 00:21:08,260 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-25 00:21:08,260 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-25 00:21:08,260 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-25 00:21:08,275 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:21:07" (1/1) ... [2018-10-25 00:21:08,275 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:21:07" (1/1) ... [2018-10-25 00:21:08,282 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:21:07" (1/1) ... [2018-10-25 00:21:08,282 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:21:07" (1/1) ... [2018-10-25 00:21:08,329 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:21:07" (1/1) ... [2018-10-25 00:21:08,356 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:21:07" (1/1) ... [2018-10-25 00:21:08,371 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:21:07" (1/1) ... [2018-10-25 00:21:08,382 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-25 00:21:08,382 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-25 00:21:08,382 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-25 00:21:08,383 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-25 00:21:08,383 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:21:07" (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 00:21:08,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-25 00:21:08,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-25 00:21:08,448 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-25 00:21:08,448 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-25 00:21:08,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-25 00:21:08,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-25 00:21:08,449 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-25 00:21:08,449 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-25 00:21:13,338 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-25 00:21:13,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 12:21:13 BoogieIcfgContainer [2018-10-25 00:21:13,341 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-25 00:21:13,342 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-25 00:21:13,342 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-25 00:21:13,346 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-25 00:21:13,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 12:21:06" (1/3) ... [2018-10-25 00:21:13,347 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d80de10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 12:21:13, skipping insertion in model container [2018-10-25 00:21:13,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:21:07" (2/3) ... [2018-10-25 00:21:13,348 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d80de10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 12:21:13, skipping insertion in model container [2018-10-25 00:21:13,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 12:21:13" (3/3) ... [2018-10-25 00:21:13,350 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label58_true-unreach-call.c [2018-10-25 00:21:13,361 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-25 00:21:13,372 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-25 00:21:13,390 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-25 00:21:13,441 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-25 00:21:13,441 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-25 00:21:13,442 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-25 00:21:13,442 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-25 00:21:13,442 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-25 00:21:13,442 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-25 00:21:13,442 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-25 00:21:13,442 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-25 00:21:13,476 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-10-25 00:21:13,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2018-10-25 00:21:13,494 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:21:13,495 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:21:13,498 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:21:13,504 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:21:13,505 INFO L82 PathProgramCache]: Analyzing trace with hash 25486780, now seen corresponding path program 1 times [2018-10-25 00:21:13,507 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:21:13,565 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:21:13,565 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:21:13,565 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:21:13,566 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:21:13,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:21:14,498 WARN L179 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-10-25 00:21:14,866 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 00:21:14,869 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 00:21:14,869 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-25 00:21:14,869 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:21:14,876 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-25 00:21:14,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-25 00:21:14,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 00:21:14,895 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 4 states. [2018-10-25 00:21:18,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:21:18,601 INFO L93 Difference]: Finished difference Result 1080 states and 1936 transitions. [2018-10-25 00:21:18,605 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-25 00:21:18,606 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 167 [2018-10-25 00:21:18,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:21:18,631 INFO L225 Difference]: With dead ends: 1080 [2018-10-25 00:21:18,631 INFO L226 Difference]: Without dead ends: 762 [2018-10-25 00:21:18,640 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 00:21:18,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2018-10-25 00:21:18,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 520. [2018-10-25 00:21:18,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 520 states. [2018-10-25 00:21:18,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 919 transitions. [2018-10-25 00:21:18,755 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 919 transitions. Word has length 167 [2018-10-25 00:21:18,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:21:18,756 INFO L481 AbstractCegarLoop]: Abstraction has 520 states and 919 transitions. [2018-10-25 00:21:18,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-25 00:21:18,759 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 919 transitions. [2018-10-25 00:21:18,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-10-25 00:21:18,766 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:21:18,767 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 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 00:21:18,767 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:21:18,768 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:21:18,768 INFO L82 PathProgramCache]: Analyzing trace with hash 256333056, now seen corresponding path program 1 times [2018-10-25 00:21:18,768 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:21:18,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:21:18,769 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:21:18,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:21:18,770 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:21:18,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:21:19,094 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-10-25 00:21:19,229 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:21:19,229 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 00:21:19,229 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-25 00:21:19,229 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:21:19,231 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-25 00:21:19,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-25 00:21:19,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-25 00:21:19,232 INFO L87 Difference]: Start difference. First operand 520 states and 919 transitions. Second operand 7 states. [2018-10-25 00:21:19,939 WARN L179 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 11 [2018-10-25 00:21:22,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:21:22,526 INFO L93 Difference]: Finished difference Result 1609 states and 2945 transitions. [2018-10-25 00:21:22,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-25 00:21:22,529 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 184 [2018-10-25 00:21:22,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:21:22,546 INFO L225 Difference]: With dead ends: 1609 [2018-10-25 00:21:22,546 INFO L226 Difference]: Without dead ends: 1095 [2018-10-25 00:21:22,550 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-10-25 00:21:22,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1095 states. [2018-10-25 00:21:22,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1095 to 1030. [2018-10-25 00:21:22,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1030 states. [2018-10-25 00:21:22,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1030 states to 1030 states and 1816 transitions. [2018-10-25 00:21:22,665 INFO L78 Accepts]: Start accepts. Automaton has 1030 states and 1816 transitions. Word has length 184 [2018-10-25 00:21:22,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:21:22,665 INFO L481 AbstractCegarLoop]: Abstraction has 1030 states and 1816 transitions. [2018-10-25 00:21:22,665 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-25 00:21:22,666 INFO L276 IsEmpty]: Start isEmpty. Operand 1030 states and 1816 transitions. [2018-10-25 00:21:22,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-10-25 00:21:22,671 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:21:22,672 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 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 00:21:22,672 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:21:22,672 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:21:22,673 INFO L82 PathProgramCache]: Analyzing trace with hash -208733179, now seen corresponding path program 1 times [2018-10-25 00:21:22,673 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:21:22,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:21:22,674 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:21:22,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:21:22,674 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:21:22,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:21:22,956 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-10-25 00:21:23,285 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:21:23,286 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 00:21:23,286 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-25 00:21:23,286 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:21:23,287 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 00:21:23,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 00:21:23,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-25 00:21:23,288 INFO L87 Difference]: Start difference. First operand 1030 states and 1816 transitions. Second operand 6 states. [2018-10-25 00:21:26,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:21:26,721 INFO L93 Difference]: Finished difference Result 3134 states and 5772 transitions. [2018-10-25 00:21:26,723 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-25 00:21:26,723 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 185 [2018-10-25 00:21:26,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:21:26,744 INFO L225 Difference]: With dead ends: 3134 [2018-10-25 00:21:26,744 INFO L226 Difference]: Without dead ends: 2110 [2018-10-25 00:21:26,749 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-25 00:21:26,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2110 states. [2018-10-25 00:21:26,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2110 to 2036. [2018-10-25 00:21:26,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2036 states. [2018-10-25 00:21:26,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2036 states to 2036 states and 3605 transitions. [2018-10-25 00:21:26,846 INFO L78 Accepts]: Start accepts. Automaton has 2036 states and 3605 transitions. Word has length 185 [2018-10-25 00:21:26,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:21:26,847 INFO L481 AbstractCegarLoop]: Abstraction has 2036 states and 3605 transitions. [2018-10-25 00:21:26,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 00:21:26,847 INFO L276 IsEmpty]: Start isEmpty. Operand 2036 states and 3605 transitions. [2018-10-25 00:21:26,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-10-25 00:21:26,856 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:21:26,856 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:21:26,856 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:21:26,857 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:21:26,857 INFO L82 PathProgramCache]: Analyzing trace with hash 1838382951, now seen corresponding path program 1 times [2018-10-25 00:21:26,858 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:21:26,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:21:26,859 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:21:26,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:21:26,859 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:21:26,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:21:27,111 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-10-25 00:21:27,173 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 21 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-25 00:21:27,173 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:21:27,173 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:21:27,174 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 195 with the following transitions: [2018-10-25 00:21:27,177 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [16], [17], [21], [25], [29], [33], [37], [41], [44], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [797], [799], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:21:27,256 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:21:27,257 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:21:28,580 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 00:21:28,582 INFO L272 AbstractInterpreter]: Visited 168 different actions 168 times. Never merged. Never widened. Never found a fixpoint. Largest state had 88 variables. [2018-10-25 00:21:28,626 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:21:28,626 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 00:21:29,643 INFO L232 lantSequenceWeakener]: Weakened 185 states. On average, predicates are now at 71.52% of their original sizes. [2018-10-25 00:21:29,643 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 00:21:30,297 INFO L413 sIntCurrentIteration]: We have 193 unified AI predicates [2018-10-25 00:21:30,297 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-25 00:21:30,298 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-25 00:21:30,298 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [6] total 21 [2018-10-25 00:21:30,298 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:21:30,299 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-25 00:21:30,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-25 00:21:30,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2018-10-25 00:21:30,300 INFO L87 Difference]: Start difference. First operand 2036 states and 3605 transitions. Second operand 17 states. [2018-10-25 00:21:43,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:21:43,040 INFO L93 Difference]: Finished difference Result 4276 states and 7590 transitions. [2018-10-25 00:21:43,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-25 00:21:43,040 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 194 [2018-10-25 00:21:43,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:21:43,053 INFO L225 Difference]: With dead ends: 4276 [2018-10-25 00:21:43,053 INFO L226 Difference]: Without dead ends: 2246 [2018-10-25 00:21:43,060 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 194 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2018-10-25 00:21:43,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2246 states. [2018-10-25 00:21:43,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2246 to 2244. [2018-10-25 00:21:43,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2244 states. [2018-10-25 00:21:43,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2244 states to 2244 states and 3822 transitions. [2018-10-25 00:21:43,133 INFO L78 Accepts]: Start accepts. Automaton has 2244 states and 3822 transitions. Word has length 194 [2018-10-25 00:21:43,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:21:43,133 INFO L481 AbstractCegarLoop]: Abstraction has 2244 states and 3822 transitions. [2018-10-25 00:21:43,133 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-25 00:21:43,133 INFO L276 IsEmpty]: Start isEmpty. Operand 2244 states and 3822 transitions. [2018-10-25 00:21:43,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-10-25 00:21:43,317 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:21:43,318 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:21:43,318 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:21:43,319 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:21:43,319 INFO L82 PathProgramCache]: Analyzing trace with hash 1476879530, now seen corresponding path program 1 times [2018-10-25 00:21:43,319 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:21:43,320 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:21:43,320 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:21:43,320 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:21:43,321 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:21:43,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:21:43,619 WARN L179 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-10-25 00:21:43,750 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 36 proven. 21 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-25 00:21:43,750 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:21:43,750 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:21:43,751 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 207 with the following transitions: [2018-10-25 00:21:43,752 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [16], [17], [21], [24], [25], [29], [33], [37], [41], [44], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [797], [799], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:21:43,772 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:21:43,772 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:21:44,799 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 00:21:44,799 INFO L272 AbstractInterpreter]: Visited 172 different actions 338 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-25 00:21:44,808 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:21:44,808 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 00:21:45,994 INFO L232 lantSequenceWeakener]: Weakened 203 states. On average, predicates are now at 71.49% of their original sizes. [2018-10-25 00:21:45,995 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 00:21:46,749 INFO L413 sIntCurrentIteration]: We have 205 unified AI predicates [2018-10-25 00:21:46,750 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-25 00:21:46,750 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-25 00:21:46,750 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [22] imperfect sequences [9] total 29 [2018-10-25 00:21:46,750 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:21:46,751 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-25 00:21:46,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-25 00:21:46,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2018-10-25 00:21:46,752 INFO L87 Difference]: Start difference. First operand 2244 states and 3822 transitions. Second operand 22 states. [2018-10-25 00:23:32,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:23:32,538 INFO L93 Difference]: Finished difference Result 4488 states and 7812 transitions. [2018-10-25 00:23:32,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-25 00:23:32,538 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 206 [2018-10-25 00:23:32,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:23:32,550 INFO L225 Difference]: With dead ends: 4488 [2018-10-25 00:23:32,550 INFO L226 Difference]: Without dead ends: 2458 [2018-10-25 00:23:32,556 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 214 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=193, Invalid=737, Unknown=0, NotChecked=0, Total=930 [2018-10-25 00:23:32,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2458 states. [2018-10-25 00:23:32,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2458 to 2455. [2018-10-25 00:23:32,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2455 states. [2018-10-25 00:23:32,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2455 states to 2455 states and 4048 transitions. [2018-10-25 00:23:32,620 INFO L78 Accepts]: Start accepts. Automaton has 2455 states and 4048 transitions. Word has length 206 [2018-10-25 00:23:32,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:23:32,621 INFO L481 AbstractCegarLoop]: Abstraction has 2455 states and 4048 transitions. [2018-10-25 00:23:32,621 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-25 00:23:32,621 INFO L276 IsEmpty]: Start isEmpty. Operand 2455 states and 4048 transitions. [2018-10-25 00:23:32,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-10-25 00:23:32,628 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:23:32,628 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:23:32,629 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:23:32,629 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:23:32,629 INFO L82 PathProgramCache]: Analyzing trace with hash -531306737, now seen corresponding path program 1 times [2018-10-25 00:23:32,629 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:23:32,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:23:32,630 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:23:32,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:23:32,631 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:23:32,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:23:33,141 WARN L179 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-25 00:23:33,337 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 48 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:23:33,337 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:23:33,337 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:23:33,337 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 207 with the following transitions: [2018-10-25 00:23:33,338 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [44], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [797], [799], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:23:33,345 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:23:33,345 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:23:35,592 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 00:23:35,592 INFO L272 AbstractInterpreter]: Visited 171 different actions 335 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-25 00:23:35,598 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:23:35,598 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 00:23:38,700 INFO L232 lantSequenceWeakener]: Weakened 8 states. On average, predicates are now at 83.28% of their original sizes. [2018-10-25 00:23:38,701 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 00:23:45,556 INFO L413 sIntCurrentIteration]: We have 205 unified AI predicates [2018-10-25 00:23:45,556 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-25 00:23:45,556 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-25 00:23:45,556 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [6] total 17 [2018-10-25 00:23:45,557 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:23:45,557 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-25 00:23:45,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-25 00:23:45,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2018-10-25 00:23:45,558 INFO L87 Difference]: Start difference. First operand 2455 states and 4048 transitions. Second operand 13 states. [2018-10-25 00:24:43,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:24:43,858 INFO L93 Difference]: Finished difference Result 6665 states and 11811 transitions. [2018-10-25 00:24:43,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-25 00:24:43,858 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 206 [2018-10-25 00:24:43,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:24:43,879 INFO L225 Difference]: With dead ends: 6665 [2018-10-25 00:24:43,880 INFO L226 Difference]: Without dead ends: 4635 [2018-10-25 00:24:43,890 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 210 GetRequests, 76 SyntacticMatches, 118 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 603 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2018-10-25 00:24:43,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4635 states. [2018-10-25 00:24:44,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4635 to 4613. [2018-10-25 00:24:44,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4613 states. [2018-10-25 00:24:44,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4613 states to 4613 states and 7515 transitions. [2018-10-25 00:24:44,019 INFO L78 Accepts]: Start accepts. Automaton has 4613 states and 7515 transitions. Word has length 206 [2018-10-25 00:24:44,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:24:44,020 INFO L481 AbstractCegarLoop]: Abstraction has 4613 states and 7515 transitions. [2018-10-25 00:24:44,020 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-25 00:24:44,020 INFO L276 IsEmpty]: Start isEmpty. Operand 4613 states and 7515 transitions. [2018-10-25 00:24:44,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-10-25 00:24:44,033 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:24:44,033 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:24:44,033 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:24:44,033 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:24:44,034 INFO L82 PathProgramCache]: Analyzing trace with hash -1705817475, now seen corresponding path program 1 times [2018-10-25 00:24:44,034 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:24:44,035 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:24:44,035 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:24:44,035 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:24:44,035 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:24:44,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:24:44,297 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 00:24:44,408 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 72 proven. 9 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-10-25 00:24:44,408 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:24:44,408 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:24:44,409 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 221 with the following transitions: [2018-10-25 00:24:44,409 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [16], [17], [21], [24], [25], [28], [29], [33], [37], [41], [45], [48], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [797], [799], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:24:44,414 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:24:44,415 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:24:49,743 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 00:24:49,743 INFO L272 AbstractInterpreter]: Visited 174 different actions 517 times. Merged at 7 different actions 19 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 88 variables. [2018-10-25 00:24:49,753 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:24:49,754 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 00:24:49,754 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:24:49,754 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 00:24:49,764 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:24:49,764 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 00:24:49,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:24:50,015 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 00:24:50,349 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 62 proven. 4 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2018-10-25 00:24:50,350 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 00:24:50,859 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 57 proven. 20 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2018-10-25 00:24:50,882 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 00:24:50,882 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-10-25 00:24:50,882 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 00:24:50,883 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-25 00:24:50,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-25 00:24:50,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-10-25 00:24:50,883 INFO L87 Difference]: Start difference. First operand 4613 states and 7515 transitions. Second operand 9 states. [2018-10-25 00:24:56,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:24:56,009 INFO L93 Difference]: Finished difference Result 18835 states and 36860 transitions. [2018-10-25 00:24:56,010 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-25 00:24:56,010 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 220 [2018-10-25 00:24:56,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:24:56,106 INFO L225 Difference]: With dead ends: 18835 [2018-10-25 00:24:56,106 INFO L226 Difference]: Without dead ends: 14856 [2018-10-25 00:24:56,136 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 449 SyntacticMatches, 7 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=195, Invalid=617, Unknown=0, NotChecked=0, Total=812 [2018-10-25 00:24:56,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14856 states. [2018-10-25 00:24:56,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14856 to 14441. [2018-10-25 00:24:56,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14441 states. [2018-10-25 00:24:56,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14441 states to 14441 states and 23379 transitions. [2018-10-25 00:24:56,790 INFO L78 Accepts]: Start accepts. Automaton has 14441 states and 23379 transitions. Word has length 220 [2018-10-25 00:24:56,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:24:56,791 INFO L481 AbstractCegarLoop]: Abstraction has 14441 states and 23379 transitions. [2018-10-25 00:24:56,791 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-25 00:24:56,791 INFO L276 IsEmpty]: Start isEmpty. Operand 14441 states and 23379 transitions. [2018-10-25 00:24:56,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-10-25 00:24:56,832 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:24:56,832 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:24:56,833 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:24:56,833 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:24:56,833 INFO L82 PathProgramCache]: Analyzing trace with hash 2041384371, now seen corresponding path program 1 times [2018-10-25 00:24:56,833 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:24:56,834 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:24:56,834 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:24:56,834 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:24:56,835 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:24:56,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:24:57,148 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 00:24:57,821 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 49 proven. 31 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-25 00:24:57,822 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:24:57,822 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:24:57,822 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 220 with the following transitions: [2018-10-25 00:24:57,822 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [48], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [797], [799], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:24:57,826 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:24:57,827 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:25:03,011 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 00:25:03,012 INFO L272 AbstractInterpreter]: Visited 173 different actions 520 times. Merged at 7 different actions 25 times. Never widened. Found 4 fixpoints after 2 different actions. Largest state had 88 variables. [2018-10-25 00:25:03,023 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:25:03,023 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 00:25:03,023 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:25:03,023 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 00:25:03,034 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:25:03,035 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 00:25:03,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:25:03,226 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 00:25:03,351 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 67 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-10-25 00:25:03,351 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 00:25:03,507 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 58 proven. 11 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-10-25 00:25:03,537 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 00:25:03,538 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2018-10-25 00:25:03,538 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 00:25:03,539 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-25 00:25:03,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-25 00:25:03,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2018-10-25 00:25:03,539 INFO L87 Difference]: Start difference. First operand 14441 states and 23379 transitions. Second operand 12 states. [2018-10-25 00:25:10,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:25:10,127 INFO L93 Difference]: Finished difference Result 43539 states and 71637 transitions. [2018-10-25 00:25:10,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-25 00:25:10,128 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 219 [2018-10-25 00:25:10,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:25:10,234 INFO L225 Difference]: With dead ends: 43539 [2018-10-25 00:25:10,235 INFO L226 Difference]: Without dead ends: 29734 [2018-10-25 00:25:10,313 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 460 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 448 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=409, Invalid=1313, Unknown=0, NotChecked=0, Total=1722 [2018-10-25 00:25:10,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29734 states. [2018-10-25 00:25:11,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29734 to 29684. [2018-10-25 00:25:11,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29684 states. [2018-10-25 00:25:11,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29684 states to 29684 states and 44338 transitions. [2018-10-25 00:25:11,235 INFO L78 Accepts]: Start accepts. Automaton has 29684 states and 44338 transitions. Word has length 219 [2018-10-25 00:25:11,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:25:11,235 INFO L481 AbstractCegarLoop]: Abstraction has 29684 states and 44338 transitions. [2018-10-25 00:25:11,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-25 00:25:11,235 INFO L276 IsEmpty]: Start isEmpty. Operand 29684 states and 44338 transitions. [2018-10-25 00:25:11,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2018-10-25 00:25:11,575 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:25:11,575 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:25:11,575 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:25:11,576 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:25:11,576 INFO L82 PathProgramCache]: Analyzing trace with hash 177494580, now seen corresponding path program 1 times [2018-10-25 00:25:11,576 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:25:11,577 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:25:11,577 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:25:11,577 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:25:11,577 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) Received shutdown request... [2018-10-25 00:25:11,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:25:11,687 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Timeout exceeded at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.interpolate(Interpolator.java:215) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:201) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:919) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.getInterpolants(ManagedScript.java:200) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:282) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsTree(InterpolatingTraceCheckCraig.java:271) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:207) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructCraig(TraceCheckConstructor.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:183) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseTaipanRefinementStrategy.getTraceCheck(BaseTaipanRefinementStrategy.java:216) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:435) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-10-25 00:25:11,691 INFO L168 Benchmark]: Toolchain (without parser) took 245002.30 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 2.5 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-10-25 00:25:11,692 INFO L168 Benchmark]: CDTParser took 0.20 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. [2018-10-25 00:25:11,693 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1254.54 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: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. [2018-10-25 00:25:11,694 INFO L168 Benchmark]: Boogie Procedure Inliner took 311.78 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 730.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -844.8 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. [2018-10-25 00:25:11,694 INFO L168 Benchmark]: Boogie Preprocessor took 122.40 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2018-10-25 00:25:11,696 INFO L168 Benchmark]: RCFGBuilder took 4959.09 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 265.6 MB). Peak memory consumption was 265.6 MB. Max. memory is 7.1 GB. [2018-10-25 00:25:11,697 INFO L168 Benchmark]: TraceAbstraction took 238348.32 ms. Allocated memory was 2.2 GB in the beginning and 4.0 GB in the end (delta: 1.8 GB). Free memory was 1.9 GB in the beginning and 2.5 GB in the end (delta: -643.8 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-10-25 00:25:11,704 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1254.54 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: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 311.78 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 730.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -844.8 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 122.40 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 4959.09 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 265.6 MB). Peak memory consumption was 265.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 238348.32 ms. Allocated memory was 2.2 GB in the beginning and 4.0 GB in the end (delta: 1.8 GB). Free memory was 1.9 GB in the beginning and 2.5 GB in the end (delta: -643.8 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: Timeout exceeded de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Timeout exceeded: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.interpolate(Interpolator.java:215) RESULT: Ultimate could not prove your program: Toolchain returned no result. Completed graceful shutdown