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/Problem10_label58_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 23:26:21,307 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 23:26:21,309 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 23:26:21,321 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 23:26:21,321 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 23:26:21,322 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 23:26:21,324 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 23:26:21,325 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 23:26:21,327 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 23:26:21,328 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 23:26:21,329 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 23:26:21,329 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 23:26:21,330 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 23:26:21,331 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 23:26:21,332 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 23:26:21,333 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 23:26:21,334 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 23:26:21,336 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 23:26:21,338 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 23:26:21,339 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 23:26:21,340 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 23:26:21,342 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 23:26:21,344 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 23:26:21,353 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 [2018-10-24 23:26:21,369 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 23:26:21,369 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 23:26:21,370 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 23:26:21,370 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 23:26:21,370 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 23:26:21,370 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 23:26:21,371 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-24 23:26:21,371 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 23:26:21,371 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-24 23:26:21,371 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 23:26:21,371 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 23:26:21,371 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 23:26:21,372 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 23:26:21,372 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 23:26:21,372 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 23:26:21,373 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 23:26:21,373 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 23:26:21,373 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 23:26:21,373 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 23:26:21,373 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 23:26:21,374 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 23:26:21,374 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 23:26:21,374 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 23:26:21,374 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 23:26:21,374 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 23:26:21,375 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 23:26:21,375 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 23:26:21,375 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 23:26:21,375 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 23:26:21,375 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 23:26:21,376 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 23:26:21,376 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 23:26:21,376 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 23:26:21,376 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 23:26:21,376 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 23:26:21,377 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 23:26:21,435 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 23:26:21,456 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 23:26:21,460 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 23:26:21,461 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 23:26:21,465 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 23:26:21,466 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label58_false-unreach-call.c [2018-10-24 23:26:21,527 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/908e9e5aa/a092226f72404ac89cf08dbd2d225bce/FLAGb01ee585f [2018-10-24 23:26:22,075 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 23:26:22,076 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label58_false-unreach-call.c [2018-10-24 23:26:22,098 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/908e9e5aa/a092226f72404ac89cf08dbd2d225bce/FLAGb01ee585f [2018-10-24 23:26:22,112 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/908e9e5aa/a092226f72404ac89cf08dbd2d225bce [2018-10-24 23:26:22,123 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 23:26:22,125 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 23:26:22,126 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 23:26:22,126 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 23:26:22,130 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 23:26:22,130 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:26:22" (1/1) ... [2018-10-24 23:26:22,133 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b3e367d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:26:22, skipping insertion in model container [2018-10-24 23:26:22,133 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:26:22" (1/1) ... [2018-10-24 23:26:22,144 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 23:26:22,217 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 23:26:22,697 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 23:26:22,702 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 23:26:22,844 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 23:26:22,863 INFO L193 MainTranslator]: Completed translation [2018-10-24 23:26:22,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:26:22 WrapperNode [2018-10-24 23:26:22,865 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 23:26:22,866 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 23:26:22,867 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 23:26:22,867 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 23:26:22,874 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:26:22" (1/1) ... [2018-10-24 23:26:22,896 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:26:22" (1/1) ... [2018-10-24 23:26:23,079 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 23:26:23,079 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 23:26:23,079 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 23:26:23,080 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 23:26:23,092 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:26:22" (1/1) ... [2018-10-24 23:26:23,092 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:26:22" (1/1) ... [2018-10-24 23:26:23,109 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:26:22" (1/1) ... [2018-10-24 23:26:23,110 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:26:22" (1/1) ... [2018-10-24 23:26:23,159 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:26:22" (1/1) ... [2018-10-24 23:26:23,181 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:26:22" (1/1) ... [2018-10-24 23:26:23,198 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:26:22" (1/1) ... [2018-10-24 23:26:23,214 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 23:26:23,215 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 23:26:23,215 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 23:26:23,215 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 23:26:23,216 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:26:22" (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 [2018-10-24 23:26:23,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 23:26:23,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 23:26:23,287 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 23:26:23,287 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 23:26:23,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 23:26:23,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 23:26:23,288 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 23:26:23,288 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 23:26:26,786 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 23:26:26,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:26:26 BoogieIcfgContainer [2018-10-24 23:26:26,787 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 23:26:26,788 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 23:26:26,788 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 23:26:26,791 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 23:26:26,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:26:22" (1/3) ... [2018-10-24 23:26:26,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76cb8e1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:26:26, skipping insertion in model container [2018-10-24 23:26:26,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:26:22" (2/3) ... [2018-10-24 23:26:26,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76cb8e1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:26:26, skipping insertion in model container [2018-10-24 23:26:26,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:26:26" (3/3) ... [2018-10-24 23:26:26,795 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label58_false-unreach-call.c [2018-10-24 23:26:26,803 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 23:26:26,812 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 23:26:26,829 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 23:26:26,867 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 23:26:26,868 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 23:26:26,868 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 23:26:26,868 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 23:26:26,868 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 23:26:26,869 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 23:26:26,869 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 23:26:26,869 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 23:26:26,896 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2018-10-24 23:26:26,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-24 23:26:26,903 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:26:26,904 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] [2018-10-24 23:26:26,907 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:26:26,913 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:26:26,913 INFO L82 PathProgramCache]: Analyzing trace with hash -527630724, now seen corresponding path program 1 times [2018-10-24 23:26:26,916 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:26:26,974 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:26:26,974 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:26:26,974 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:26:26,974 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:26:27,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:26:27,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:26:27,307 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:26:27,308 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 23:26:27,308 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:26:27,315 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 23:26:27,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 23:26:27,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 23:26:27,334 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 4 states. [2018-10-24 23:26:30,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:26:30,219 INFO L93 Difference]: Finished difference Result 737 states and 1298 transitions. [2018-10-24 23:26:30,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 23:26:30,220 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2018-10-24 23:26:30,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:26:30,242 INFO L225 Difference]: With dead ends: 737 [2018-10-24 23:26:30,242 INFO L226 Difference]: Without dead ends: 515 [2018-10-24 23:26:30,251 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 23:26:30,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2018-10-24 23:26:30,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 515. [2018-10-24 23:26:30,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 515 states. [2018-10-24 23:26:30,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 848 transitions. [2018-10-24 23:26:30,387 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 848 transitions. Word has length 20 [2018-10-24 23:26:30,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:26:30,388 INFO L481 AbstractCegarLoop]: Abstraction has 515 states and 848 transitions. [2018-10-24 23:26:30,388 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 23:26:30,388 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 848 transitions. [2018-10-24 23:26:30,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-10-24 23:26:30,396 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:26:30,396 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] [2018-10-24 23:26:30,399 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:26:30,399 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:26:30,400 INFO L82 PathProgramCache]: Analyzing trace with hash -1079251133, now seen corresponding path program 1 times [2018-10-24 23:26:30,400 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:26:30,401 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:26:30,402 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:26:30,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:26:30,403 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:26:30,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:26:30,820 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:26:30,820 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:26:30,820 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 23:26:30,820 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:26:30,823 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 23:26:30,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 23:26:30,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 23:26:30,824 INFO L87 Difference]: Start difference. First operand 515 states and 848 transitions. Second operand 6 states. [2018-10-24 23:26:33,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:26:33,709 INFO L93 Difference]: Finished difference Result 1863 states and 3251 transitions. [2018-10-24 23:26:33,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 23:26:33,711 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 95 [2018-10-24 23:26:33,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:26:33,728 INFO L225 Difference]: With dead ends: 1863 [2018-10-24 23:26:33,728 INFO L226 Difference]: Without dead ends: 1354 [2018-10-24 23:26:33,736 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 [2018-10-24 23:26:33,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1354 states. [2018-10-24 23:26:33,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1354 to 1331. [2018-10-24 23:26:33,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1331 states. [2018-10-24 23:26:33,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1331 states to 1331 states and 2051 transitions. [2018-10-24 23:26:33,826 INFO L78 Accepts]: Start accepts. Automaton has 1331 states and 2051 transitions. Word has length 95 [2018-10-24 23:26:33,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:26:33,827 INFO L481 AbstractCegarLoop]: Abstraction has 1331 states and 2051 transitions. [2018-10-24 23:26:33,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 23:26:33,827 INFO L276 IsEmpty]: Start isEmpty. Operand 1331 states and 2051 transitions. [2018-10-24 23:26:33,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-10-24 23:26:33,833 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:26:33,835 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] [2018-10-24 23:26:33,836 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:26:33,836 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:26:33,836 INFO L82 PathProgramCache]: Analyzing trace with hash 861016671, now seen corresponding path program 1 times [2018-10-24 23:26:33,836 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:26:33,837 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:26:33,838 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:26:33,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:26:33,838 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:26:33,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:26:34,093 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:26:34,094 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:26:34,094 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 23:26:34,094 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:26:34,095 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 23:26:34,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 23:26:34,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 23:26:34,096 INFO L87 Difference]: Start difference. First operand 1331 states and 2051 transitions. Second operand 6 states. [2018-10-24 23:26:38,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:26:38,444 INFO L93 Difference]: Finished difference Result 3512 states and 5693 transitions. [2018-10-24 23:26:38,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 23:26:38,445 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2018-10-24 23:26:38,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:26:38,462 INFO L225 Difference]: With dead ends: 3512 [2018-10-24 23:26:38,462 INFO L226 Difference]: Without dead ends: 2187 [2018-10-24 23:26:38,473 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 23:26:38,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2187 states. [2018-10-24 23:26:38,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2187 to 2165. [2018-10-24 23:26:38,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2165 states. [2018-10-24 23:26:38,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2165 states to 2165 states and 3178 transitions. [2018-10-24 23:26:38,553 INFO L78 Accepts]: Start accepts. Automaton has 2165 states and 3178 transitions. Word has length 97 [2018-10-24 23:26:38,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:26:38,554 INFO L481 AbstractCegarLoop]: Abstraction has 2165 states and 3178 transitions. [2018-10-24 23:26:38,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 23:26:38,554 INFO L276 IsEmpty]: Start isEmpty. Operand 2165 states and 3178 transitions. [2018-10-24 23:26:38,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-10-24 23:26:38,556 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:26:38,556 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] [2018-10-24 23:26:38,557 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:26:38,557 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:26:38,557 INFO L82 PathProgramCache]: Analyzing trace with hash 300203728, now seen corresponding path program 1 times [2018-10-24 23:26:38,557 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:26:38,562 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:26:38,562 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:26:38,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:26:38,563 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:26:38,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:26:38,697 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:26:38,697 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:26:38,697 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 23:26:38,697 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:26:38,698 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 23:26:38,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 23:26:38,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 23:26:38,699 INFO L87 Difference]: Start difference. First operand 2165 states and 3178 transitions. Second operand 4 states. [2018-10-24 23:26:39,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:26:39,998 INFO L93 Difference]: Finished difference Result 4762 states and 7142 transitions. [2018-10-24 23:26:40,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 23:26:40,001 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 100 [2018-10-24 23:26:40,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:26:40,019 INFO L225 Difference]: With dead ends: 4762 [2018-10-24 23:26:40,020 INFO L226 Difference]: Without dead ends: 2603 [2018-10-24 23:26:40,033 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 [2018-10-24 23:26:40,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2603 states. [2018-10-24 23:26:40,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2603 to 2601. [2018-10-24 23:26:40,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2601 states. [2018-10-24 23:26:40,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2601 states to 2601 states and 3587 transitions. [2018-10-24 23:26:40,108 INFO L78 Accepts]: Start accepts. Automaton has 2601 states and 3587 transitions. Word has length 100 [2018-10-24 23:26:40,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:26:40,108 INFO L481 AbstractCegarLoop]: Abstraction has 2601 states and 3587 transitions. [2018-10-24 23:26:40,109 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 23:26:40,109 INFO L276 IsEmpty]: Start isEmpty. Operand 2601 states and 3587 transitions. [2018-10-24 23:26:40,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-10-24 23:26:40,111 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:26:40,112 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 23:26:40,112 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:26:40,112 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:26:40,112 INFO L82 PathProgramCache]: Analyzing trace with hash 789375408, now seen corresponding path program 1 times [2018-10-24 23:26:40,112 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:26:40,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:26:40,113 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:26:40,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:26:40,114 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:26:40,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:26:40,323 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:26:40,323 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:26:40,324 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 23:26:40,324 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:26:40,324 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 23:26:40,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 23:26:40,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 23:26:40,325 INFO L87 Difference]: Start difference. First operand 2601 states and 3587 transitions. Second operand 6 states. [2018-10-24 23:26:42,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:26:42,449 INFO L93 Difference]: Finished difference Result 6030 states and 8674 transitions. [2018-10-24 23:26:42,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 23:26:42,455 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 116 [2018-10-24 23:26:42,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:26:42,479 INFO L225 Difference]: With dead ends: 6030 [2018-10-24 23:26:42,479 INFO L226 Difference]: Without dead ends: 3435 [2018-10-24 23:26:42,490 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 [2018-10-24 23:26:42,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3435 states. [2018-10-24 23:26:42,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3435 to 3363. [2018-10-24 23:26:42,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3363 states. [2018-10-24 23:26:42,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3363 states to 3363 states and 4459 transitions. [2018-10-24 23:26:42,586 INFO L78 Accepts]: Start accepts. Automaton has 3363 states and 4459 transitions. Word has length 116 [2018-10-24 23:26:42,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:26:42,586 INFO L481 AbstractCegarLoop]: Abstraction has 3363 states and 4459 transitions. [2018-10-24 23:26:42,587 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 23:26:42,587 INFO L276 IsEmpty]: Start isEmpty. Operand 3363 states and 4459 transitions. [2018-10-24 23:26:42,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-10-24 23:26:42,594 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:26:42,594 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] [2018-10-24 23:26:42,595 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:26:42,597 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:26:42,597 INFO L82 PathProgramCache]: Analyzing trace with hash 44889932, now seen corresponding path program 1 times [2018-10-24 23:26:42,597 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:26:42,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:26:42,599 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:26:42,599 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:26:42,599 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:26:42,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:26:42,945 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 23:26:43,142 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2018-10-24 23:26:43,143 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:26:43,143 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 23:26:43,144 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 191 with the following transitions: [2018-10-24 23:26:43,146 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], [538], [539], [543], [547], [551], [555], [559], [563], [567], [570], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-24 23:26:43,213 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 23:26:43,213 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 23:26:43,711 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 23:26:43,713 INFO L272 AbstractInterpreter]: Visited 94 different actions 94 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 23:26:43,742 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:26:43,742 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 23:26:44,270 INFO L232 lantSequenceWeakener]: Weakened 181 states. On average, predicates are now at 72.71% of their original sizes. [2018-10-24 23:26:44,270 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 23:26:44,512 INFO L413 sIntCurrentIteration]: We have 189 unified AI predicates [2018-10-24 23:26:44,512 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 23:26:44,514 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 23:26:44,514 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [4] total 8 [2018-10-24 23:26:44,514 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:26:44,515 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 23:26:44,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 23:26:44,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 23:26:44,515 INFO L87 Difference]: Start difference. First operand 3363 states and 4459 transitions. Second operand 6 states. [2018-10-24 23:26:58,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:26:58,650 INFO L93 Difference]: Finished difference Result 6866 states and 9110 transitions. [2018-10-24 23:26:58,650 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 23:26:58,650 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 190 [2018-10-24 23:26:58,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:26:58,666 INFO L225 Difference]: With dead ends: 6866 [2018-10-24 23:26:58,666 INFO L226 Difference]: Without dead ends: 3509 [2018-10-24 23:26:58,678 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 190 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-24 23:26:58,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3509 states. [2018-10-24 23:26:58,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3509 to 3507. [2018-10-24 23:26:58,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3507 states. [2018-10-24 23:26:58,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3507 states to 3507 states and 4612 transitions. [2018-10-24 23:26:58,768 INFO L78 Accepts]: Start accepts. Automaton has 3507 states and 4612 transitions. Word has length 190 [2018-10-24 23:26:58,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:26:58,768 INFO L481 AbstractCegarLoop]: Abstraction has 3507 states and 4612 transitions. [2018-10-24 23:26:58,769 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 23:26:58,769 INFO L276 IsEmpty]: Start isEmpty. Operand 3507 states and 4612 transitions. [2018-10-24 23:26:58,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-10-24 23:26:58,775 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:26:58,776 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 23:26:58,776 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:26:58,777 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:26:58,777 INFO L82 PathProgramCache]: Analyzing trace with hash -239609168, now seen corresponding path program 1 times [2018-10-24 23:26:58,777 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:26:58,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:26:58,778 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:26:58,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:26:58,778 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:26:58,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:26:59,070 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 23:26:59,606 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 27 proven. 6 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-10-24 23:26:59,606 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:26:59,606 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 23:26:59,606 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 223 with the following transitions: [2018-10-24 23:26:59,607 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], [534], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [702], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-24 23:26:59,615 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 23:26:59,615 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 23:26:59,935 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 23:26:59,935 INFO L272 AbstractInterpreter]: Visited 131 different actions 388 times. Merged at 7 different actions 18 times. Never widened. Found 3 fixpoints after 3 different actions. Largest state had 24 variables. [2018-10-24 23:26:59,974 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:26:59,976 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 23:26:59,976 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:26:59,977 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 [2018-10-24 23:26:59,993 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:26:59,994 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 23:27:00,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:27:00,108 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 23:27:00,495 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 104 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:27:00,496 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 23:27:01,414 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 104 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:27:01,449 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 23:27:01,449 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 13 [2018-10-24 23:27:01,449 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 23:27:01,450 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-24 23:27:01,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-24 23:27:01,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2018-10-24 23:27:01,452 INFO L87 Difference]: Start difference. First operand 3507 states and 4612 transitions. Second operand 11 states. [2018-10-24 23:27:07,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:27:07,345 INFO L93 Difference]: Finished difference Result 10277 states and 14081 transitions. [2018-10-24 23:27:07,346 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-24 23:27:07,346 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 222 [2018-10-24 23:27:07,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:27:07,361 INFO L225 Difference]: With dead ends: 10277 [2018-10-24 23:27:07,361 INFO L226 Difference]: Without dead ends: 3089 [2018-10-24 23:27:07,409 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 475 GetRequests, 448 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2018-10-24 23:27:07,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3089 states. [2018-10-24 23:27:07,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3089 to 2359. [2018-10-24 23:27:07,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2359 states. [2018-10-24 23:27:07,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2359 states to 2359 states and 2715 transitions. [2018-10-24 23:27:07,494 INFO L78 Accepts]: Start accepts. Automaton has 2359 states and 2715 transitions. Word has length 222 [2018-10-24 23:27:07,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:27:07,494 INFO L481 AbstractCegarLoop]: Abstraction has 2359 states and 2715 transitions. [2018-10-24 23:27:07,494 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-24 23:27:07,494 INFO L276 IsEmpty]: Start isEmpty. Operand 2359 states and 2715 transitions. [2018-10-24 23:27:07,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2018-10-24 23:27:07,503 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:27:07,504 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, 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] [2018-10-24 23:27:07,504 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:27:07,504 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:27:07,505 INFO L82 PathProgramCache]: Analyzing trace with hash -1512727360, now seen corresponding path program 1 times [2018-10-24 23:27:07,505 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:27:07,506 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:27:07,506 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:27:07,506 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:27:07,506 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:27:07,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:27:08,246 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 5 proven. 28 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-10-24 23:27:08,247 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:27:08,247 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 23:27:08,247 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 279 with the following transitions: [2018-10-24 23:27:08,248 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], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [678], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [782], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-24 23:27:08,253 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 23:27:08,253 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 23:27:09,590 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 23:27:09,590 INFO L272 AbstractInterpreter]: Visited 151 different actions 444 times. Merged at 7 different actions 15 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 24 variables. [2018-10-24 23:27:09,618 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:27:09,618 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 23:27:09,618 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:27:09,618 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 [2018-10-24 23:27:09,630 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:27:09,630 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 23:27:09,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:27:09,724 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 23:27:10,877 WARN L179 SmtUtils]: Spent 956.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 20 [2018-10-24 23:27:11,435 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 5 proven. 137 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:27:11,435 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 23:27:25,530 WARN L179 SmtUtils]: Spent 2.30 s on a formula simplification that was a NOOP. DAG size: 35 [2018-10-24 23:27:26,083 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 1670 Received shutdown request... [2018-10-24 23:29:49,755 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-24 23:29:49,956 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 23:29:49,956 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 23:29:49,962 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 23:29:49,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 11:29:49 BoogieIcfgContainer [2018-10-24 23:29:49,962 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 23:29:49,963 INFO L168 Benchmark]: Toolchain (without parser) took 207838.76 ms. Allocated memory was 1.5 GB in the beginning and 7.5 GB in the end (delta: 6.0 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 7.9 GB. Max. memory is 7.1 GB. [2018-10-24 23:29:49,964 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 23:29:49,965 INFO L168 Benchmark]: CACSL2BoogieTranslator took 739.18 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. [2018-10-24 23:29:49,965 INFO L168 Benchmark]: Boogie Procedure Inliner took 212.65 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 741.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -824.8 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. [2018-10-24 23:29:49,966 INFO L168 Benchmark]: Boogie Preprocessor took 134.97 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 23:29:49,967 INFO L168 Benchmark]: RCFGBuilder took 3572.90 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: 132.2 MB). Peak memory consumption was 132.2 MB. Max. memory is 7.1 GB. [2018-10-24 23:29:49,968 INFO L168 Benchmark]: TraceAbstraction took 203173.83 ms. Allocated memory was 2.3 GB in the beginning and 7.5 GB in the end (delta: 5.2 GB). Free memory was 2.1 GB in the beginning and 2.5 GB in the end (delta: -407.4 MB). Peak memory consumption was 7.8 GB. Max. memory is 7.1 GB. [2018-10-24 23:29:49,977 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 739.18 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 212.65 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 741.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -824.8 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 134.97 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3572.90 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: 132.2 MB). Peak memory consumption was 132.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 203173.83 ms. Allocated memory was 2.3 GB in the beginning and 7.5 GB in the end (delta: 5.2 GB). Free memory was 2.1 GB in the beginning and 2.5 GB in the end (delta: -407.4 MB). Peak memory consumption was 7.8 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 analyzing trace of length 279 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while PartialQuantifierElimination was eliminating quantifiers from formula with 1 quantifier alternations,while CnfTransformerHelper was transforming 1670 disjunction. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 216 locations, 1 error locations. TIMEOUT Result, 203.1s OverallTime, 8 OverallIterations, 3 TraceHistogramMax, 33.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 793 SDtfs, 5070 SDslu, 862 SDs, 0 SdLazy, 8089 SolverSat, 1675 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 24.8s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 706 GetRequests, 646 SyntacticMatches, 7 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3507occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 2.3s AbstIntTime, 3 AbstIntIterations, 1 AbstIntStrong, 0.9970212327355185 AbsIntWeakeningRatio, 0.13756613756613756 AbsIntAvgWeakeningVarsNumRemoved, 15.16931216931217 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 7 MinimizatonAttempts, 851 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 1062 NumberOfCodeBlocks, 1062 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1275 ConstructedInterpolants, 0 QuantifiedInterpolants, 811238 SizeOfPredicates, 1 NumberOfNonLiveVariables, 397 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 9 InterpolantComputations, 5 PerfectInterpolantSequences, 449/477 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown