java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label22_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 23:52:36,351 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 23:52:36,354 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 23:52:36,372 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 23:52:36,372 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 23:52:36,373 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 23:52:36,374 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 23:52:36,376 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 23:52:36,378 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 23:52:36,378 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 23:52:36,379 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 23:52:36,380 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 23:52:36,381 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 23:52:36,384 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 23:52:36,385 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 23:52:36,386 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 23:52:36,390 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 23:52:36,392 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 23:52:36,399 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 23:52:36,400 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 23:52:36,403 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 23:52:36,405 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 23:52:36,409 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 23:52:36,410 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 23:52:36,412 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 23:52:36,413 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 23:52:36,414 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 23:52:36,414 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 23:52:36,416 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 23:52:36,419 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 23:52:36,419 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 23:52:36,421 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-26 23:52:36,425 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-26 23:52:36,448 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 23:52:36,448 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 23:52:36,449 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 23:52:36,450 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-26 23:52:36,450 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-26 23:52:36,450 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-26 23:52:36,450 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-26 23:52:36,450 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-26 23:52:36,451 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-26 23:52:36,451 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-26 23:52:36,451 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-26 23:52:36,452 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-26 23:52:36,452 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 23:52:36,452 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 23:52:36,453 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 23:52:36,453 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 23:52:36,453 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 23:52:36,453 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 23:52:36,453 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 23:52:36,454 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 23:52:36,455 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 23:52:36,455 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 23:52:36,455 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 23:52:36,455 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 23:52:36,456 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 23:52:36,456 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 23:52:36,456 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 23:52:36,456 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 23:52:36,456 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-26 23:52:36,457 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 23:52:36,457 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 23:52:36,457 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 23:52:36,457 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 23:52:36,457 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-26 23:52:36,501 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 23:52:36,515 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 23:52:36,518 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 23:52:36,520 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 23:52:36,520 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 23:52:36,521 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label22_false-unreach-call_false-termination.c [2018-10-26 23:52:36,578 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ba192560f/815c8bc4f8d44807b1d9a0d1f8a7faa7/FLAG6f007653b [2018-10-26 23:52:37,171 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 23:52:37,175 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label22_false-unreach-call_false-termination.c [2018-10-26 23:52:37,213 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ba192560f/815c8bc4f8d44807b1d9a0d1f8a7faa7/FLAG6f007653b [2018-10-26 23:52:37,234 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ba192560f/815c8bc4f8d44807b1d9a0d1f8a7faa7 [2018-10-26 23:52:37,246 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 23:52:37,248 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 23:52:37,249 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 23:52:37,249 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 23:52:37,254 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 23:52:37,256 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:52:37" (1/1) ... [2018-10-26 23:52:37,260 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11290b0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:52:37, skipping insertion in model container [2018-10-26 23:52:37,260 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:52:37" (1/1) ... [2018-10-26 23:52:37,271 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 23:52:37,343 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 23:52:37,895 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 23:52:37,899 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 23:52:38,056 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 23:52:38,079 INFO L193 MainTranslator]: Completed translation [2018-10-26 23:52:38,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:52:38 WrapperNode [2018-10-26 23:52:38,080 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 23:52:38,081 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 23:52:38,081 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 23:52:38,082 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 23:52:38,093 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:52:38" (1/1) ... [2018-10-26 23:52:38,127 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:52:38" (1/1) ... [2018-10-26 23:52:38,321 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 23:52:38,322 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 23:52:38,322 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 23:52:38,322 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 23:52:38,332 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:52:38" (1/1) ... [2018-10-26 23:52:38,332 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:52:38" (1/1) ... [2018-10-26 23:52:38,337 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:52:38" (1/1) ... [2018-10-26 23:52:38,338 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:52:38" (1/1) ... [2018-10-26 23:52:38,370 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:52:38" (1/1) ... [2018-10-26 23:52:38,391 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:52:38" (1/1) ... [2018-10-26 23:52:38,405 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:52:38" (1/1) ... [2018-10-26 23:52:38,419 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 23:52:38,420 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 23:52:38,420 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 23:52:38,420 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 23:52:38,421 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:52:38" (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 [2018-10-26 23:52:38,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 23:52:38,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 23:52:38,501 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-26 23:52:38,501 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-26 23:52:38,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 23:52:38,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 23:52:38,502 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 23:52:38,502 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 23:52:42,047 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 23:52:42,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:52:42 BoogieIcfgContainer [2018-10-26 23:52:42,048 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 23:52:42,049 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 23:52:42,049 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 23:52:42,053 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 23:52:42,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:52:37" (1/3) ... [2018-10-26 23:52:42,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6edb8343 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:52:42, skipping insertion in model container [2018-10-26 23:52:42,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:52:38" (2/3) ... [2018-10-26 23:52:42,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6edb8343 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:52:42, skipping insertion in model container [2018-10-26 23:52:42,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:52:42" (3/3) ... [2018-10-26 23:52:42,057 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label22_false-unreach-call_false-termination.c [2018-10-26 23:52:42,067 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 23:52:42,075 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 23:52:42,093 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 23:52:42,133 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 23:52:42,134 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 23:52:42,135 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 23:52:42,135 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 23:52:42,135 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 23:52:42,135 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 23:52:42,135 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 23:52:42,136 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 23:52:42,167 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-10-26 23:52:42,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-26 23:52:42,173 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:52:42,175 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] [2018-10-26 23:52:42,177 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:52:42,183 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:52:42,183 INFO L82 PathProgramCache]: Analyzing trace with hash -874290308, now seen corresponding path program 1 times [2018-10-26 23:52:42,185 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:52:42,244 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:52:42,245 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:52:42,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:52:42,245 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:52:42,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:52:42,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:52:42,592 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:52:42,593 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 23:52:42,593 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:52:42,599 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 23:52:42,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 23:52:42,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 23:52:42,619 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-10-26 23:52:44,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:52:44,728 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-10-26 23:52:44,730 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 23:52:44,731 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2018-10-26 23:52:44,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:52:44,752 INFO L225 Difference]: With dead ends: 691 [2018-10-26 23:52:44,752 INFO L226 Difference]: Without dead ends: 434 [2018-10-26 23:52:44,760 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 23:52:44,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-10-26 23:52:44,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-10-26 23:52:44,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-10-26 23:52:44,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 765 transitions. [2018-10-26 23:52:44,844 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 765 transitions. Word has length 20 [2018-10-26 23:52:44,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:52:44,845 INFO L481 AbstractCegarLoop]: Abstraction has 434 states and 765 transitions. [2018-10-26 23:52:44,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 23:52:44,845 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 765 transitions. [2018-10-26 23:52:44,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-10-26 23:52:44,850 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:52:44,851 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 23:52:44,851 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:52:44,851 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:52:44,852 INFO L82 PathProgramCache]: Analyzing trace with hash 473181535, now seen corresponding path program 1 times [2018-10-26 23:52:44,852 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:52:44,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:52:44,853 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:52:44,854 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:52:44,854 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:52:44,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:52:45,126 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:52:45,126 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:52:45,126 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-26 23:52:45,126 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:52:45,128 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 23:52:45,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 23:52:45,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-26 23:52:45,129 INFO L87 Difference]: Start difference. First operand 434 states and 765 transitions. Second operand 6 states. [2018-10-26 23:52:47,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:52:47,411 INFO L93 Difference]: Finished difference Result 1062 states and 1897 transitions. [2018-10-26 23:52:47,415 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 23:52:47,416 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 95 [2018-10-26 23:52:47,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:52:47,422 INFO L225 Difference]: With dead ends: 1062 [2018-10-26 23:52:47,422 INFO L226 Difference]: Without dead ends: 634 [2018-10-26 23:52:47,424 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-26 23:52:47,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2018-10-26 23:52:47,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 625. [2018-10-26 23:52:47,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 625 states. [2018-10-26 23:52:47,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 1019 transitions. [2018-10-26 23:52:47,470 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 1019 transitions. Word has length 95 [2018-10-26 23:52:47,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:52:47,471 INFO L481 AbstractCegarLoop]: Abstraction has 625 states and 1019 transitions. [2018-10-26 23:52:47,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 23:52:47,471 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 1019 transitions. [2018-10-26 23:52:47,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-10-26 23:52:47,474 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:52:47,474 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 23:52:47,475 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:52:47,475 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:52:47,475 INFO L82 PathProgramCache]: Analyzing trace with hash -1939267164, now seen corresponding path program 1 times [2018-10-26 23:52:47,475 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:52:47,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:52:47,477 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:52:47,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:52:47,477 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:52:47,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:52:47,678 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:52:47,678 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:52:47,678 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 23:52:47,679 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:52:47,679 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 23:52:47,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 23:52:47,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 23:52:47,680 INFO L87 Difference]: Start difference. First operand 625 states and 1019 transitions. Second operand 4 states. [2018-10-26 23:52:51,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:52:51,648 INFO L93 Difference]: Finished difference Result 2350 states and 4011 transitions. [2018-10-26 23:52:51,651 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 23:52:51,651 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 104 [2018-10-26 23:52:51,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:52:51,668 INFO L225 Difference]: With dead ends: 2350 [2018-10-26 23:52:51,668 INFO L226 Difference]: Without dead ends: 1731 [2018-10-26 23:52:51,675 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 23:52:51,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1731 states. [2018-10-26 23:52:51,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1731 to 1731. [2018-10-26 23:52:51,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1731 states. [2018-10-26 23:52:51,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1731 states to 1731 states and 2640 transitions. [2018-10-26 23:52:51,750 INFO L78 Accepts]: Start accepts. Automaton has 1731 states and 2640 transitions. Word has length 104 [2018-10-26 23:52:51,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:52:51,751 INFO L481 AbstractCegarLoop]: Abstraction has 1731 states and 2640 transitions. [2018-10-26 23:52:51,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 23:52:51,751 INFO L276 IsEmpty]: Start isEmpty. Operand 1731 states and 2640 transitions. [2018-10-26 23:52:51,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-10-26 23:52:51,769 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:52:51,770 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:52:51,770 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:52:51,770 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:52:51,770 INFO L82 PathProgramCache]: Analyzing trace with hash -1125198180, now seen corresponding path program 1 times [2018-10-26 23:52:51,771 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:52:51,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:52:51,772 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:52:51,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:52:51,772 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:52:51,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:52:52,041 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-10-26 23:52:52,041 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:52:52,042 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 23:52:52,042 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:52:52,043 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 23:52:52,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 23:52:52,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 23:52:52,043 INFO L87 Difference]: Start difference. First operand 1731 states and 2640 transitions. Second operand 3 states. [2018-10-26 23:52:53,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:52:53,692 INFO L93 Difference]: Finished difference Result 4928 states and 7680 transitions. [2018-10-26 23:52:53,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 23:52:53,694 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 214 [2018-10-26 23:52:53,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:52:53,726 INFO L225 Difference]: With dead ends: 4928 [2018-10-26 23:52:53,726 INFO L226 Difference]: Without dead ends: 3203 [2018-10-26 23:52:53,749 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 23:52:53,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3203 states. [2018-10-26 23:52:53,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3203 to 3203. [2018-10-26 23:52:53,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3203 states. [2018-10-26 23:52:53,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3203 states to 3203 states and 4752 transitions. [2018-10-26 23:52:53,872 INFO L78 Accepts]: Start accepts. Automaton has 3203 states and 4752 transitions. Word has length 214 [2018-10-26 23:52:53,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:52:53,873 INFO L481 AbstractCegarLoop]: Abstraction has 3203 states and 4752 transitions. [2018-10-26 23:52:53,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 23:52:53,876 INFO L276 IsEmpty]: Start isEmpty. Operand 3203 states and 4752 transitions. [2018-10-26 23:52:53,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-10-26 23:52:53,886 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:52:53,886 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:52:53,886 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:52:53,887 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:52:53,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1192909764, now seen corresponding path program 1 times [2018-10-26 23:52:53,887 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:52:53,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:52:53,888 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:52:53,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:52:53,888 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:52:53,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:52:54,560 WARN L179 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 10 [2018-10-26 23:52:55,271 WARN L179 SmtUtils]: Spent 638.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 18 [2018-10-26 23:52:55,951 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 117 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:52:55,951 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 23:52:55,952 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-26 23:52:55,952 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 227 with the following transitions: [2018-10-26 23:52:55,955 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [61], [63], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [586], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-26 23:52:56,030 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-26 23:52:56,030 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-26 23:52:58,988 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-26 23:53:01,858 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-26 23:53:01,860 INFO L272 AbstractInterpreter]: Visited 118 different actions 118 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-26 23:53:01,911 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:53:01,911 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-26 23:53:04,724 INFO L227 lantSequenceWeakener]: Weakened 218 states. On average, predicates are now at 77.4% of their original sizes. [2018-10-26 23:53:04,725 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-26 23:53:05,155 INFO L415 sIntCurrentIteration]: We unified 225 AI predicates to 225 [2018-10-26 23:53:05,155 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-26 23:53:05,156 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 23:53:05,156 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2018-10-26 23:53:05,156 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:53:05,157 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 23:53:05,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 23:53:05,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-26 23:53:05,161 INFO L87 Difference]: Start difference. First operand 3203 states and 4752 transitions. Second operand 7 states. [2018-10-26 23:53:32,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:53:32,562 INFO L93 Difference]: Finished difference Result 6585 states and 9782 transitions. [2018-10-26 23:53:32,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 23:53:32,562 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 226 [2018-10-26 23:53:32,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:53:32,587 INFO L225 Difference]: With dead ends: 6585 [2018-10-26 23:53:32,587 INFO L226 Difference]: Without dead ends: 3388 [2018-10-26 23:53:32,606 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 226 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-26 23:53:32,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3388 states. [2018-10-26 23:53:32,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3388 to 3386. [2018-10-26 23:53:32,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3386 states. [2018-10-26 23:53:32,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3386 states to 3386 states and 4943 transitions. [2018-10-26 23:53:32,723 INFO L78 Accepts]: Start accepts. Automaton has 3386 states and 4943 transitions. Word has length 226 [2018-10-26 23:53:32,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:53:32,723 INFO L481 AbstractCegarLoop]: Abstraction has 3386 states and 4943 transitions. [2018-10-26 23:53:32,724 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-26 23:53:32,724 INFO L276 IsEmpty]: Start isEmpty. Operand 3386 states and 4943 transitions. [2018-10-26 23:53:32,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2018-10-26 23:53:32,738 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:53:32,738 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:53:32,739 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:53:32,739 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:53:32,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1312706291, now seen corresponding path program 1 times [2018-10-26 23:53:32,739 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:53:32,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:53:32,740 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:53:32,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:53:32,741 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:53:32,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:53:33,279 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-26 23:53:33,497 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-26 23:53:33,718 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-26 23:53:33,987 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2018-10-26 23:53:34,406 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 127 proven. 170 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-26 23:53:34,406 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 23:53:34,406 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-26 23:53:34,407 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 312 with the following transitions: [2018-10-26 23:53:34,407 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [61], [63], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [554], [555], [559], [563], [567], [571], [575], [579], [583], [586], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-26 23:53:34,414 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-26 23:53:34,414 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-26 23:53:36,567 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-26 23:53:40,810 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-26 23:53:40,810 INFO L272 AbstractInterpreter]: Visited 122 different actions 237 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-26 23:53:40,823 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:53:40,823 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-26 23:53:43,592 INFO L227 lantSequenceWeakener]: Weakened 131 states. On average, predicates are now at 77.72% of their original sizes. [2018-10-26 23:53:43,592 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-26 23:54:06,222 INFO L415 sIntCurrentIteration]: We unified 310 AI predicates to 310 [2018-10-26 23:54:06,222 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-26 23:54:06,223 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 23:54:06,223 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [12] total 30 [2018-10-26 23:54:06,223 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:54:06,224 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-26 23:54:06,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-26 23:54:06,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2018-10-26 23:54:06,225 INFO L87 Difference]: Start difference. First operand 3386 states and 4943 transitions. Second operand 20 states. [2018-10-26 23:55:46,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:55:46,047 INFO L93 Difference]: Finished difference Result 7347 states and 10849 transitions. [2018-10-26 23:55:46,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-26 23:55:46,048 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 311 [2018-10-26 23:55:46,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:55:46,068 INFO L225 Difference]: With dead ends: 7347 [2018-10-26 23:55:46,069 INFO L226 Difference]: Without dead ends: 4150 [2018-10-26 23:55:46,088 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 317 GetRequests, 272 SyntacticMatches, 20 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 24.2s TimeCoverageRelationStatistics Valid=148, Invalid=554, Unknown=0, NotChecked=0, Total=702 [2018-10-26 23:55:46,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4150 states. [2018-10-26 23:55:46,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4150 to 4112. [2018-10-26 23:55:46,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4112 states. [2018-10-26 23:55:46,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4112 states to 4112 states and 5710 transitions. [2018-10-26 23:55:46,305 INFO L78 Accepts]: Start accepts. Automaton has 4112 states and 5710 transitions. Word has length 311 [2018-10-26 23:55:46,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:55:46,306 INFO L481 AbstractCegarLoop]: Abstraction has 4112 states and 5710 transitions. [2018-10-26 23:55:46,306 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-26 23:55:46,306 INFO L276 IsEmpty]: Start isEmpty. Operand 4112 states and 5710 transitions. [2018-10-26 23:55:46,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2018-10-26 23:55:46,321 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:55:46,321 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-26 23:55:46,322 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:55:46,323 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:55:46,323 INFO L82 PathProgramCache]: Analyzing trace with hash 535151199, now seen corresponding path program 1 times [2018-10-26 23:55:46,323 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:55:46,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:55:46,324 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:55:46,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:55:46,324 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:55:46,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:55:46,837 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-26 23:55:47,035 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-26 23:55:47,274 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-26 23:55:47,648 WARN L179 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-10-26 23:55:48,408 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 52 proven. 279 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-26 23:55:48,409 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 23:55:48,409 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-26 23:55:48,409 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 338 with the following transitions: [2018-10-26 23:55:48,410 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [61], [63], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [586], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [658], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-26 23:55:48,414 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-26 23:55:48,414 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-26 23:55:51,406 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-26 23:55:58,028 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-26 23:55:58,029 INFO L272 AbstractInterpreter]: Visited 122 different actions 238 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-26 23:55:58,037 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:55:58,037 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-26 23:55:59,825 INFO L227 lantSequenceWeakener]: Weakened 113 states. On average, predicates are now at 77.96% of their original sizes. [2018-10-26 23:55:59,825 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-26 23:56:05,590 INFO L415 sIntCurrentIteration]: We unified 336 AI predicates to 336 [2018-10-26 23:56:05,590 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-26 23:56:05,591 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 23:56:05,591 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [15] total 33 [2018-10-26 23:56:05,591 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:56:05,591 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-26 23:56:05,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-26 23:56:05,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2018-10-26 23:56:05,592 INFO L87 Difference]: Start difference. First operand 4112 states and 5710 transitions. Second operand 20 states. Received shutdown request... [2018-10-26 23:56:35,402 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-26 23:56:35,402 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-26 23:56:35,408 WARN L205 ceAbstractionStarter]: Timeout [2018-10-26 23:56:35,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 11:56:35 BoogieIcfgContainer [2018-10-26 23:56:35,408 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 23:56:35,409 INFO L168 Benchmark]: Toolchain (without parser) took 238162.91 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.4 GB in the end (delta: -984.6 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-10-26 23:56:35,410 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-26 23:56:35,411 INFO L168 Benchmark]: CACSL2BoogieTranslator took 831.77 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-10-26 23:56:35,412 INFO L168 Benchmark]: Boogie Procedure Inliner took 240.32 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 751.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -840.0 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2018-10-26 23:56:35,413 INFO L168 Benchmark]: Boogie Preprocessor took 97.47 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2018-10-26 23:56:35,414 INFO L168 Benchmark]: RCFGBuilder took 3628.24 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 120.4 MB). Peak memory consumption was 120.4 MB. Max. memory is 7.1 GB. [2018-10-26 23:56:35,414 INFO L168 Benchmark]: TraceAbstraction took 233359.30 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.4 GB in the end (delta: -320.9 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-10-26 23:56:35,420 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 831.77 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 240.32 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 751.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -840.0 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 97.47 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3628.24 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 120.4 MB). Peak memory consumption was 120.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 233359.30 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.4 GB in the end (delta: -320.9 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 43]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 43). Cancelled while BasicCegarLoop was constructing difference of abstraction (4112states) and FLOYD_HOARE automaton (currently 12 states, 20 states before enhancement),while ReachableStatesComputation was computing reachable states (161 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 233.2s OverallTime, 7 OverallIterations, 4 TraceHistogramMax, 167.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1209 SDtfs, 5646 SDslu, 839 SDs, 0 SdLazy, 6618 SolverSat, 1406 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 65.7s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 909 GetRequests, 818 SyntacticMatches, 26 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 31.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4112occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 22.0s AbstIntTime, 3 AbstIntIterations, 3 AbstIntStrong, 0.9955469308973526 AbsIntWeakeningRatio, 0.10332950631458095 AbsIntAvgWeakeningVarsNumRemoved, 727.4523536165327 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 6 MinimizatonAttempts, 49 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 5.6s InterpolantComputationTime, 1307 NumberOfCodeBlocks, 1307 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1300 ConstructedInterpolants, 0 QuantifiedInterpolants, 4389651 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 439/890 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown