java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-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/Problem19_label20_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 09:46:45,128 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 09:46:45,130 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 09:46:45,142 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 09:46:45,143 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 09:46:45,144 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 09:46:45,145 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 09:46:45,147 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 09:46:45,149 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 09:46:45,150 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 09:46:45,151 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 09:46:45,151 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 09:46:45,152 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 09:46:45,153 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 09:46:45,154 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 09:46:45,155 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 09:46:45,156 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 09:46:45,158 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 09:46:45,160 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 09:46:45,161 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 09:46:45,162 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 09:46:45,164 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 09:46:45,166 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 09:46:45,166 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 09:46:45,167 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 09:46:45,168 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 09:46:45,168 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 09:46:45,169 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 09:46:45,170 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 09:46:45,171 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 09:46:45,171 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 09:46:45,172 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 09:46:45,172 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 09:46:45,172 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 09:46:45,173 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 09:46:45,174 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 09:46:45,174 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-11-07 09:46:45,204 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 09:46:45,205 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 09:46:45,206 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 09:46:45,206 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 09:46:45,207 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 09:46:45,207 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 09:46:45,207 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 09:46:45,207 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 09:46:45,207 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 09:46:45,208 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 09:46:45,208 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 09:46:45,208 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 09:46:45,209 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 09:46:45,209 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 09:46:45,210 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 09:46:45,210 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 09:46:45,210 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 09:46:45,210 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 09:46:45,210 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 09:46:45,210 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 09:46:45,212 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 09:46:45,212 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 09:46:45,213 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 09:46:45,213 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 09:46:45,213 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 09:46:45,213 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 09:46:45,213 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 09:46:45,214 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 09:46:45,214 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 09:46:45,214 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 09:46:45,214 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 09:46:45,214 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 09:46:45,215 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 09:46:45,215 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 09:46:45,215 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 09:46:45,215 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 09:46:45,285 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 09:46:45,298 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 09:46:45,302 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 09:46:45,304 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 09:46:45,304 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 09:46:45,305 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label20_true-unreach-call.c [2018-11-07 09:46:45,367 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93c832219/21b2d95fe88e46f6ad9569e731f55324/FLAGe6a80d946 [2018-11-07 09:46:46,293 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 09:46:46,295 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label20_true-unreach-call.c [2018-11-07 09:46:46,339 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93c832219/21b2d95fe88e46f6ad9569e731f55324/FLAGe6a80d946 [2018-11-07 09:46:46,356 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93c832219/21b2d95fe88e46f6ad9569e731f55324 [2018-11-07 09:46:46,368 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 09:46:46,370 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 09:46:46,371 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 09:46:46,371 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 09:46:46,375 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 09:46:46,377 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:46:46" (1/1) ... [2018-11-07 09:46:46,380 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37ef60d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:46:46, skipping insertion in model container [2018-11-07 09:46:46,380 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:46:46" (1/1) ... [2018-11-07 09:46:46,391 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 09:46:46,623 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 09:46:48,697 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 09:46:48,702 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 09:46:49,903 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 09:46:49,963 INFO L193 MainTranslator]: Completed translation [2018-11-07 09:46:49,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:46:49 WrapperNode [2018-11-07 09:46:49,964 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 09:46:49,965 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 09:46:49,965 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 09:46:49,965 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 09:46:49,976 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:46:49" (1/1) ... [2018-11-07 09:46:50,446 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:46:49" (1/1) ... [2018-11-07 09:46:50,456 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 09:46:50,457 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 09:46:50,457 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 09:46:50,457 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 09:46:50,469 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:46:49" (1/1) ... [2018-11-07 09:46:50,469 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:46:49" (1/1) ... [2018-11-07 09:46:50,506 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:46:49" (1/1) ... [2018-11-07 09:46:50,506 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:46:49" (1/1) ... [2018-11-07 09:46:50,671 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:46:49" (1/1) ... [2018-11-07 09:46:50,717 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:46:49" (1/1) ... [2018-11-07 09:46:50,768 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:46:49" (1/1) ... [2018-11-07 09:46:50,859 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 09:46:50,859 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 09:46:50,859 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 09:46:50,860 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 09:46:50,861 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:46:49" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-07 09:46:50,934 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 09:46:50,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 09:46:50,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 09:46:50,935 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-11-07 09:46:50,935 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-11-07 09:46:50,935 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-11-07 09:46:50,935 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-11-07 09:46:50,935 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 09:46:50,936 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 09:46:50,936 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 09:46:50,936 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 09:46:50,936 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 09:46:50,936 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 09:46:50,937 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 09:46:50,937 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 09:46:50,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 09:46:50,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 09:46:50,937 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 09:46:50,937 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 09:47:07,347 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 09:47:07,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:47:07 BoogieIcfgContainer [2018-11-07 09:47:07,348 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 09:47:07,349 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 09:47:07,350 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 09:47:07,353 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 09:47:07,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 09:46:46" (1/3) ... [2018-11-07 09:47:07,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fcc8d12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:47:07, skipping insertion in model container [2018-11-07 09:47:07,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:46:49" (2/3) ... [2018-11-07 09:47:07,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fcc8d12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:47:07, skipping insertion in model container [2018-11-07 09:47:07,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:47:07" (3/3) ... [2018-11-07 09:47:07,357 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label20_true-unreach-call.c [2018-11-07 09:47:07,367 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 09:47:07,379 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 09:47:07,397 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 09:47:07,450 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 09:47:07,451 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 09:47:07,451 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 09:47:07,451 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 09:47:07,451 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 09:47:07,451 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 09:47:07,451 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 09:47:07,452 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 09:47:07,505 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-11-07 09:47:07,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-11-07 09:47:07,515 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:47:07,516 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:47:07,518 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:47:07,524 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:47:07,525 INFO L82 PathProgramCache]: Analyzing trace with hash 1661872980, now seen corresponding path program 1 times [2018-11-07 09:47:07,527 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:47:07,578 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:47:07,578 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:47:07,578 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:47:07,578 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:47:07,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:47:07,986 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 09:47:08,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:47:08,102 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:47:08,102 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 09:47:08,102 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:47:08,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 09:47:08,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 09:47:08,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 09:47:08,131 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 3 states. [2018-11-07 09:47:20,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:47:20,706 INFO L93 Difference]: Finished difference Result 4999 states and 9420 transitions. [2018-11-07 09:47:20,708 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 09:47:20,710 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2018-11-07 09:47:20,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:47:20,760 INFO L225 Difference]: With dead ends: 4999 [2018-11-07 09:47:20,761 INFO L226 Difference]: Without dead ends: 3219 [2018-11-07 09:47:20,779 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 09:47:20,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3219 states. [2018-11-07 09:47:20,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3219 to 3215. [2018-11-07 09:47:20,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3215 states. [2018-11-07 09:47:20,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3215 states to 3215 states and 5845 transitions. [2018-11-07 09:47:20,999 INFO L78 Accepts]: Start accepts. Automaton has 3215 states and 5845 transitions. Word has length 50 [2018-11-07 09:47:21,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:47:21,000 INFO L480 AbstractCegarLoop]: Abstraction has 3215 states and 5845 transitions. [2018-11-07 09:47:21,000 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 09:47:21,000 INFO L276 IsEmpty]: Start isEmpty. Operand 3215 states and 5845 transitions. [2018-11-07 09:47:21,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-11-07 09:47:21,013 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:47:21,013 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:47:21,016 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:47:21,016 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:47:21,016 INFO L82 PathProgramCache]: Analyzing trace with hash -425746485, now seen corresponding path program 1 times [2018-11-07 09:47:21,016 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:47:21,018 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:47:21,018 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:47:21,018 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:47:21,018 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:47:21,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:47:21,408 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 09:47:21,769 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:47:21,769 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:47:21,770 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 09:47:21,770 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:47:21,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:47:21,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:47:21,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:47:21,773 INFO L87 Difference]: Start difference. First operand 3215 states and 5845 transitions. Second operand 6 states. [2018-11-07 09:47:44,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:47:44,366 INFO L93 Difference]: Finished difference Result 9331 states and 16910 transitions. [2018-11-07 09:47:44,367 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 09:47:44,367 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 122 [2018-11-07 09:47:44,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:47:44,405 INFO L225 Difference]: With dead ends: 9331 [2018-11-07 09:47:44,405 INFO L226 Difference]: Without dead ends: 6122 [2018-11-07 09:47:44,417 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 09:47:44,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6122 states. [2018-11-07 09:47:44,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6122 to 6084. [2018-11-07 09:47:44,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6084 states. [2018-11-07 09:47:44,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6084 states to 6084 states and 9616 transitions. [2018-11-07 09:47:44,615 INFO L78 Accepts]: Start accepts. Automaton has 6084 states and 9616 transitions. Word has length 122 [2018-11-07 09:47:44,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:47:44,616 INFO L480 AbstractCegarLoop]: Abstraction has 6084 states and 9616 transitions. [2018-11-07 09:47:44,616 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:47:44,616 INFO L276 IsEmpty]: Start isEmpty. Operand 6084 states and 9616 transitions. [2018-11-07 09:47:44,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-11-07 09:47:44,623 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:47:44,631 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:47:44,631 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:47:44,631 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:47:44,632 INFO L82 PathProgramCache]: Analyzing trace with hash -314476791, now seen corresponding path program 1 times [2018-11-07 09:47:44,632 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:47:44,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:47:44,633 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:47:44,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:47:44,633 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:47:44,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:47:44,855 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:47:44,855 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:47:44,856 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 09:47:44,856 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:47:44,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:47:44,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:47:44,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:47:44,857 INFO L87 Difference]: Start difference. First operand 6084 states and 9616 transitions. Second operand 6 states. [2018-11-07 09:48:12,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:48:12,162 INFO L93 Difference]: Finished difference Result 24232 states and 39684 transitions. [2018-11-07 09:48:12,164 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 09:48:12,164 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 140 [2018-11-07 09:48:12,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:48:12,275 INFO L225 Difference]: With dead ends: 24232 [2018-11-07 09:48:12,282 INFO L226 Difference]: Without dead ends: 18154 [2018-11-07 09:48:12,321 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 09:48:12,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18154 states. [2018-11-07 09:48:12,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18154 to 18076. [2018-11-07 09:48:12,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18076 states. [2018-11-07 09:48:12,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18076 states to 18076 states and 25609 transitions. [2018-11-07 09:48:12,883 INFO L78 Accepts]: Start accepts. Automaton has 18076 states and 25609 transitions. Word has length 140 [2018-11-07 09:48:12,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:48:12,884 INFO L480 AbstractCegarLoop]: Abstraction has 18076 states and 25609 transitions. [2018-11-07 09:48:12,884 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:48:12,884 INFO L276 IsEmpty]: Start isEmpty. Operand 18076 states and 25609 transitions. [2018-11-07 09:48:12,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-11-07 09:48:12,892 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:48:12,892 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:48:12,896 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:48:12,897 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:48:12,897 INFO L82 PathProgramCache]: Analyzing trace with hash 1766353928, now seen corresponding path program 1 times [2018-11-07 09:48:12,897 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:48:12,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:48:12,898 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:48:12,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:48:12,899 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:48:12,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:48:13,309 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:48:13,309 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:48:13,309 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 09:48:13,310 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:48:13,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 09:48:13,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 09:48:13,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 09:48:13,311 INFO L87 Difference]: Start difference. First operand 18076 states and 25609 transitions. Second operand 5 states. [2018-11-07 09:48:29,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:48:29,920 INFO L93 Difference]: Finished difference Result 56187 states and 84559 transitions. [2018-11-07 09:48:29,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 09:48:29,921 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 185 [2018-11-07 09:48:29,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:48:30,093 INFO L225 Difference]: With dead ends: 56187 [2018-11-07 09:48:30,093 INFO L226 Difference]: Without dead ends: 38117 [2018-11-07 09:48:30,156 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 09:48:30,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38117 states. [2018-11-07 09:48:31,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38117 to 36975. [2018-11-07 09:48:31,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36975 states. [2018-11-07 09:48:31,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36975 states to 36975 states and 49837 transitions. [2018-11-07 09:48:31,104 INFO L78 Accepts]: Start accepts. Automaton has 36975 states and 49837 transitions. Word has length 185 [2018-11-07 09:48:31,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:48:31,105 INFO L480 AbstractCegarLoop]: Abstraction has 36975 states and 49837 transitions. [2018-11-07 09:48:31,105 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 09:48:31,105 INFO L276 IsEmpty]: Start isEmpty. Operand 36975 states and 49837 transitions. [2018-11-07 09:48:31,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2018-11-07 09:48:31,114 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:48:31,115 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:48:31,115 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:48:31,115 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:48:31,115 INFO L82 PathProgramCache]: Analyzing trace with hash 1259026054, now seen corresponding path program 1 times [2018-11-07 09:48:31,115 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:48:31,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:48:31,116 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:48:31,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:48:31,117 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:48:31,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:48:31,620 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 86 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 09:48:31,621 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:48:31,621 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:48:31,623 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 206 with the following transitions: [2018-11-07 09:48:31,627 INFO L202 CegarAbsIntRunner]: [0], [1], [5227], [5234], [5242], [5250], [5258], [5266], [5274], [5282], [5290], [5298], [5306], [5314], [5322], [5330], [5338], [5346], [5354], [5362], [5370], [5378], [5386], [5394], [5402], [5410], [5418], [5426], [5434], [5442], [5450], [5458], [5466], [5474], [5482], [5490], [5498], [5506], [5514], [5522], [5526], [5528], [5531], [5539], [5547], [5555], [5563], [5571], [5579], [5587], [5595], [5603], [5611], [5619], [5627], [5635], [5643], [5651], [5659], [5667], [5675], [5683], [5691], [5699], [5707], [5715], [5727], [5731], [5742], [5745], [5746], [5750], [5754], [5758], [5762], [5766], [5770], [5774], [5778], [5781], [6802], [6806], [6810], [6816], [6820], [6822], [6837], [6838], [6839], [6841], [6842] [2018-11-07 09:48:31,688 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:48:31,688 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:48:32,142 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 09:48:32,144 INFO L272 AbstractInterpreter]: Visited 87 different actions 87 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 09:48:32,189 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:48:32,189 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 09:48:32,752 INFO L227 lantSequenceWeakener]: Weakened 196 states. On average, predicates are now at 75.64% of their original sizes. [2018-11-07 09:48:32,752 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 09:48:33,008 INFO L415 sIntCurrentIteration]: We unified 204 AI predicates to 204 [2018-11-07 09:48:33,008 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 09:48:33,009 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:48:33,010 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-11-07 09:48:33,010 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:48:33,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:48:33,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:48:33,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:48:33,011 INFO L87 Difference]: Start difference. First operand 36975 states and 49837 transitions. Second operand 6 states. Received shutdown request... [2018-11-07 09:50:34,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 09:50:34,720 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 09:50:34,725 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 09:50:34,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 09:50:34 BoogieIcfgContainer [2018-11-07 09:50:34,726 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 09:50:34,727 INFO L168 Benchmark]: Toolchain (without parser) took 228357.90 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -317.9 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-11-07 09:50:34,728 INFO L168 Benchmark]: CDTParser took 0.19 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. [2018-11-07 09:50:34,729 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3593.23 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 402.5 MB). Peak memory consumption was 402.5 MB. Max. memory is 7.1 GB. [2018-11-07 09:50:34,730 INFO L168 Benchmark]: Boogie Procedure Inliner took 491.62 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 871.4 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 98.9 MB. Max. memory is 7.1 GB. [2018-11-07 09:50:34,731 INFO L168 Benchmark]: Boogie Preprocessor took 402.02 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 51.0 MB). Peak memory consumption was 51.0 MB. Max. memory is 7.1 GB. [2018-11-07 09:50:34,732 INFO L168 Benchmark]: RCFGBuilder took 16489.18 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 144.7 MB). Free memory was 2.3 GB in the beginning and 1.7 GB in the end (delta: 540.7 MB). Peak memory consumption was 685.4 MB. Max. memory is 7.1 GB. [2018-11-07 09:50:34,733 INFO L168 Benchmark]: TraceAbstraction took 207376.49 ms. Allocated memory was 2.6 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 1.7 GB in the beginning and 1.7 GB in the end (delta: 11.9 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-11-07 09:50:34,739 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 3593.23 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 402.5 MB). Peak memory consumption was 402.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 491.62 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 871.4 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 98.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 402.02 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 51.0 MB). Peak memory consumption was 51.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 16489.18 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 144.7 MB). Free memory was 2.3 GB in the beginning and 1.7 GB in the end (delta: 540.7 MB). Peak memory consumption was 685.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 207376.49 ms. Allocated memory was 2.6 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 1.7 GB in the beginning and 1.7 GB in the end (delta: 11.9 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 145]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 145). Cancelled while BasicCegarLoop was constructing difference of abstraction (36975states) and FLOYD_HOARE automaton (currently 6 states, 6 states before enhancement),while ReachableStatesComputation was computing reachable states (36314 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 1778 locations, 1 error locations. TIMEOUT Result, 207.2s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 201.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3249 SDtfs, 22878 SDslu, 3065 SDs, 0 SdLazy, 41258 SolverSat, 9877 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 164.4s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 240 GetRequests, 210 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36975occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.5s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9974771693921312 AbsIntWeakeningRatio, 0.1323529411764706 AbsIntAvgWeakeningVarsNumRemoved, 17.284313725490197 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.9s AutomataMinimizationTime, 4 MinimizatonAttempts, 1262 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 702 NumberOfCodeBlocks, 702 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 697 ConstructedInterpolants, 0 QuantifiedInterpolants, 451356 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 220/288 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown