java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label55_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 23:44:41,310 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 23:44:41,314 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 23:44:41,332 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 23:44:41,332 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 23:44:41,333 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 23:44:41,335 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 23:44:41,337 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 23:44:41,338 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 23:44:41,339 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 23:44:41,340 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 23:44:41,341 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 23:44:41,342 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 23:44:41,343 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 23:44:41,344 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 23:44:41,345 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 23:44:41,346 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 23:44:41,348 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 23:44:41,350 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 23:44:41,352 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 23:44:41,353 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 23:44:41,355 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 23:44:41,357 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-23 23:44:41,358 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-23 23:44:41,358 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-23 23:44:41,359 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-23 23:44:41,360 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-23 23:44:41,361 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-23 23:44:41,362 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-23 23:44:41,363 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-23 23:44:41,363 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-23 23:44:41,364 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-23 23:44:41,364 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-23 23:44:41,365 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-23 23:44:41,366 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-23 23:44:41,366 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-23 23:44:41,367 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-23 23:44:41,385 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 23:44:41,385 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 23:44:41,387 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 23:44:41,387 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-23 23:44:41,387 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-23 23:44:41,387 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-23 23:44:41,387 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-23 23:44:41,388 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-23 23:44:41,388 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-23 23:44:41,388 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-23 23:44:41,388 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-23 23:44:41,388 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-23 23:44:41,389 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 23:44:41,389 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 23:44:41,390 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 23:44:41,390 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 23:44:41,390 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 23:44:41,390 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 23:44:41,390 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 23:44:41,391 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 23:44:41,391 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 23:44:41,391 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 23:44:41,391 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 23:44:41,391 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 23:44:41,392 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 23:44:41,392 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 23:44:41,392 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 23:44:41,392 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 23:44:41,392 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-23 23:44:41,393 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 23:44:41,393 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 23:44:41,393 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 23:44:41,393 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 23:44:41,393 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-23 23:44:41,441 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 23:44:41,455 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 23:44:41,459 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 23:44:41,460 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 23:44:41,461 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 23:44:41,462 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label55_true-unreach-call.c [2018-10-23 23:44:41,527 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f082c43d0/653c72b0f6bb4e79b1d2f3b23662a9a2/FLAG4541a6b41 [2018-10-23 23:44:42,349 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 23:44:42,350 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label55_true-unreach-call.c [2018-10-23 23:44:42,375 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f082c43d0/653c72b0f6bb4e79b1d2f3b23662a9a2/FLAG4541a6b41 [2018-10-23 23:44:42,393 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f082c43d0/653c72b0f6bb4e79b1d2f3b23662a9a2 [2018-10-23 23:44:42,406 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 23:44:42,409 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 23:44:42,410 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 23:44:42,410 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 23:44:42,417 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 23:44:42,419 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 11:44:42" (1/1) ... [2018-10-23 23:44:42,423 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c19d582 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:44:42, skipping insertion in model container [2018-10-23 23:44:42,423 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 11:44:42" (1/1) ... [2018-10-23 23:44:42,435 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 23:44:42,537 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 23:44:43,247 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 23:44:43,254 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 23:44:43,508 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 23:44:43,533 INFO L193 MainTranslator]: Completed translation [2018-10-23 23:44:43,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:44:43 WrapperNode [2018-10-23 23:44:43,534 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 23:44:43,535 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 23:44:43,536 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 23:44:43,536 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 23:44:43,546 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:44:43" (1/1) ... [2018-10-23 23:44:43,586 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:44:43" (1/1) ... [2018-10-23 23:44:43,895 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 23:44:43,896 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 23:44:43,896 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 23:44:43,896 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 23:44:43,909 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:44:43" (1/1) ... [2018-10-23 23:44:43,909 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:44:43" (1/1) ... [2018-10-23 23:44:43,919 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:44:43" (1/1) ... [2018-10-23 23:44:43,919 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:44:43" (1/1) ... [2018-10-23 23:44:43,973 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:44:43" (1/1) ... [2018-10-23 23:44:44,010 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:44:43" (1/1) ... [2018-10-23 23:44:44,039 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:44:43" (1/1) ... [2018-10-23 23:44:44,057 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 23:44:44,058 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 23:44:44,058 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 23:44:44,058 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 23:44:44,060 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:44:43" (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 [2018-10-23 23:44:44,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-23 23:44:44,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-23 23:44:44,143 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-23 23:44:44,144 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-23 23:44:44,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 23:44:44,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 23:44:44,144 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-23 23:44:44,145 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-23 23:44:49,521 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 23:44:49,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 11:44:49 BoogieIcfgContainer [2018-10-23 23:44:49,522 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 23:44:49,524 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 23:44:49,524 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 23:44:49,528 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 23:44:49,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 11:44:42" (1/3) ... [2018-10-23 23:44:49,530 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6052dc9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 11:44:49, skipping insertion in model container [2018-10-23 23:44:49,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:44:43" (2/3) ... [2018-10-23 23:44:49,530 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6052dc9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 11:44:49, skipping insertion in model container [2018-10-23 23:44:49,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 11:44:49" (3/3) ... [2018-10-23 23:44:49,533 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label55_true-unreach-call.c [2018-10-23 23:44:49,544 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 23:44:49,555 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 23:44:49,575 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 23:44:49,630 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 23:44:49,630 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 23:44:49,630 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 23:44:49,630 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 23:44:49,631 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 23:44:49,631 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 23:44:49,631 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 23:44:49,631 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 23:44:49,666 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-10-23 23:44:49,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2018-10-23 23:44:49,685 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:44:49,687 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 23:44:49,691 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:44:49,697 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:44:49,698 INFO L82 PathProgramCache]: Analyzing trace with hash -1276853404, now seen corresponding path program 1 times [2018-10-23 23:44:49,700 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:44:49,759 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:44:49,759 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:44:49,760 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:44:49,760 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:44:50,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:44:50,630 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 23:44:50,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:44:50,845 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:44:50,845 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 23:44:50,845 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:44:50,854 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 23:44:50,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 23:44:50,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 23:44:50,879 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 3 states. [2018-10-23 23:44:53,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:44:53,315 INFO L93 Difference]: Finished difference Result 844 states and 1489 transitions. [2018-10-23 23:44:53,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 23:44:53,317 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 169 [2018-10-23 23:44:53,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:44:53,341 INFO L225 Difference]: With dead ends: 844 [2018-10-23 23:44:53,341 INFO L226 Difference]: Without dead ends: 530 [2018-10-23 23:44:53,350 INFO L605 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 [2018-10-23 23:44:53,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2018-10-23 23:44:53,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 525. [2018-10-23 23:44:53,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 525 states. [2018-10-23 23:44:53,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 865 transitions. [2018-10-23 23:44:53,487 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 865 transitions. Word has length 169 [2018-10-23 23:44:53,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:44:53,491 INFO L481 AbstractCegarLoop]: Abstraction has 525 states and 865 transitions. [2018-10-23 23:44:53,491 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 23:44:53,491 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 865 transitions. [2018-10-23 23:44:53,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-10-23 23:44:53,515 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:44:53,518 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 23:44:53,519 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:44:53,519 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:44:53,520 INFO L82 PathProgramCache]: Analyzing trace with hash 15466080, now seen corresponding path program 1 times [2018-10-23 23:44:53,520 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:44:53,524 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:44:53,524 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:44:53,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:44:53,525 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:44:53,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:44:54,078 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:44:54,080 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:44:54,080 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 23:44:54,080 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:44:54,083 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 23:44:54,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 23:44:54,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 23:44:54,086 INFO L87 Difference]: Start difference. First operand 525 states and 865 transitions. Second operand 3 states. [2018-10-23 23:44:56,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:44:56,629 INFO L93 Difference]: Finished difference Result 1473 states and 2496 transitions. [2018-10-23 23:44:56,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 23:44:56,630 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 182 [2018-10-23 23:44:56,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:44:56,640 INFO L225 Difference]: With dead ends: 1473 [2018-10-23 23:44:56,641 INFO L226 Difference]: Without dead ends: 954 [2018-10-23 23:44:56,645 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 23:44:56,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 954 states. [2018-10-23 23:44:56,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 954 to 952. [2018-10-23 23:44:56,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 952 states. [2018-10-23 23:44:56,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 952 states to 952 states and 1496 transitions. [2018-10-23 23:44:56,709 INFO L78 Accepts]: Start accepts. Automaton has 952 states and 1496 transitions. Word has length 182 [2018-10-23 23:44:56,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:44:56,710 INFO L481 AbstractCegarLoop]: Abstraction has 952 states and 1496 transitions. [2018-10-23 23:44:56,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 23:44:56,711 INFO L276 IsEmpty]: Start isEmpty. Operand 952 states and 1496 transitions. [2018-10-23 23:44:56,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-10-23 23:44:56,719 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:44:56,719 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 23:44:56,721 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:44:56,722 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:44:56,722 INFO L82 PathProgramCache]: Analyzing trace with hash 1708917764, now seen corresponding path program 1 times [2018-10-23 23:44:56,722 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:44:56,723 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:44:56,724 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:44:56,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:44:56,724 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:44:56,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:44:57,340 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:44:57,341 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:44:57,341 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 23:44:57,341 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:44:57,342 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 23:44:57,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 23:44:57,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 23:44:57,343 INFO L87 Difference]: Start difference. First operand 952 states and 1496 transitions. Second operand 5 states. [2018-10-23 23:45:03,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:45:03,142 INFO L93 Difference]: Finished difference Result 4008 states and 6512 transitions. [2018-10-23 23:45:03,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 23:45:03,149 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 184 [2018-10-23 23:45:03,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:45:03,191 INFO L225 Difference]: With dead ends: 4008 [2018-10-23 23:45:03,192 INFO L226 Difference]: Without dead ends: 3062 [2018-10-23 23:45:03,207 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 23:45:03,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3062 states. [2018-10-23 23:45:03,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3062 to 3052. [2018-10-23 23:45:03,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3052 states. [2018-10-23 23:45:03,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3052 states to 3052 states and 4689 transitions. [2018-10-23 23:45:03,363 INFO L78 Accepts]: Start accepts. Automaton has 3052 states and 4689 transitions. Word has length 184 [2018-10-23 23:45:03,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:45:03,364 INFO L481 AbstractCegarLoop]: Abstraction has 3052 states and 4689 transitions. [2018-10-23 23:45:03,364 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 23:45:03,365 INFO L276 IsEmpty]: Start isEmpty. Operand 3052 states and 4689 transitions. [2018-10-23 23:45:03,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-10-23 23:45:03,384 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:45:03,384 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 23:45:03,384 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:45:03,385 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:45:03,385 INFO L82 PathProgramCache]: Analyzing trace with hash 1523085736, now seen corresponding path program 1 times [2018-10-23 23:45:03,385 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:45:03,390 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:45:03,390 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:45:03,390 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:45:03,391 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:45:03,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:45:03,716 WARN L179 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-10-23 23:45:03,997 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:45:03,998 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:45:03,998 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-23 23:45:03,998 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:45:03,999 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 23:45:04,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 23:45:04,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-23 23:45:04,000 INFO L87 Difference]: Start difference. First operand 3052 states and 4689 transitions. Second operand 7 states. [2018-10-23 23:45:07,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:45:07,410 INFO L93 Difference]: Finished difference Result 9246 states and 16253 transitions. [2018-10-23 23:45:07,411 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-23 23:45:07,411 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 186 [2018-10-23 23:45:07,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:45:07,501 INFO L225 Difference]: With dead ends: 9246 [2018-10-23 23:45:07,501 INFO L226 Difference]: Without dead ends: 6200 [2018-10-23 23:45:07,525 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-10-23 23:45:07,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6200 states. [2018-10-23 23:45:07,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6200 to 5920. [2018-10-23 23:45:07,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5920 states. [2018-10-23 23:45:07,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5920 states to 5920 states and 9451 transitions. [2018-10-23 23:45:07,852 INFO L78 Accepts]: Start accepts. Automaton has 5920 states and 9451 transitions. Word has length 186 [2018-10-23 23:45:07,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:45:07,852 INFO L481 AbstractCegarLoop]: Abstraction has 5920 states and 9451 transitions. [2018-10-23 23:45:07,853 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-23 23:45:07,853 INFO L276 IsEmpty]: Start isEmpty. Operand 5920 states and 9451 transitions. [2018-10-23 23:45:07,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2018-10-23 23:45:07,872 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:45:07,872 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 23:45:07,872 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:45:07,873 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:45:07,873 INFO L82 PathProgramCache]: Analyzing trace with hash 1271032685, now seen corresponding path program 1 times [2018-10-23 23:45:07,873 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:45:07,874 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:45:07,874 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:45:07,874 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:45:07,875 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:45:07,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:45:08,117 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-10-23 23:45:08,474 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-10-23 23:45:08,611 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:45:08,612 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:45:08,612 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 23:45:08,612 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:45:08,613 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 23:45:08,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 23:45:08,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 23:45:08,614 INFO L87 Difference]: Start difference. First operand 5920 states and 9451 transitions. Second operand 6 states. [2018-10-23 23:45:08,852 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-10-23 23:45:12,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:45:12,678 INFO L93 Difference]: Finished difference Result 18028 states and 31530 transitions. [2018-10-23 23:45:12,680 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-23 23:45:12,680 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 187 [2018-10-23 23:45:12,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:45:12,806 INFO L225 Difference]: With dead ends: 18028 [2018-10-23 23:45:12,807 INFO L226 Difference]: Without dead ends: 12114 [2018-10-23 23:45:12,851 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-23 23:45:12,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12114 states. [2018-10-23 23:45:13,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12114 to 11840. [2018-10-23 23:45:13,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11840 states. [2018-10-23 23:45:13,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11840 states to 11840 states and 19227 transitions. [2018-10-23 23:45:13,479 INFO L78 Accepts]: Start accepts. Automaton has 11840 states and 19227 transitions. Word has length 187 [2018-10-23 23:45:13,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:45:13,479 INFO L481 AbstractCegarLoop]: Abstraction has 11840 states and 19227 transitions. [2018-10-23 23:45:13,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 23:45:13,480 INFO L276 IsEmpty]: Start isEmpty. Operand 11840 states and 19227 transitions. [2018-10-23 23:45:13,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2018-10-23 23:45:13,523 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:45:13,524 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 23:45:13,524 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:45:13,525 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:45:13,525 INFO L82 PathProgramCache]: Analyzing trace with hash 1769410092, now seen corresponding path program 1 times [2018-10-23 23:45:13,525 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:45:13,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:45:13,529 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:45:13,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:45:13,530 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:45:13,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:45:14,133 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-23 23:45:14,474 WARN L179 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-10-23 23:45:14,882 WARN L179 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-10-23 23:45:15,125 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:45:15,126 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 23:45:15,126 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 23:45:15,128 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 200 with the following transitions: [2018-10-23 23:45:15,130 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [28], [29], [33], [37], [41], [44], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [813], [815], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-23 23:45:15,285 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 23:45:15,285 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-10-23 23:49:08,427 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-10-23 23:49:08,428 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-10-23 23:49:08,430 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-23 23:49:08,430 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 23:49:08,430 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 [2018-10-23 23:49:08,442 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:49:08,442 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-23 23:49:08,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:49:08,673 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 23:49:08,709 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-23 23:49:08,911 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 23:49:08,912 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 23:49:08,916 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 23:49:08,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 11:49:08 BoogieIcfgContainer [2018-10-23 23:49:08,917 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 23:49:08,918 INFO L168 Benchmark]: Toolchain (without parser) took 266510.17 ms. Allocated memory was 1.5 GB in the beginning and 3.6 GB in the end (delta: 2.2 GB). Free memory was 1.4 GB in the beginning and 2.8 GB in the end (delta: -1.4 GB). Peak memory consumption was 734.8 MB. Max. memory is 7.1 GB. [2018-10-23 23:49:08,919 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 23:49:08,919 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1124.89 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 87.2 MB). Peak memory consumption was 87.2 MB. Max. memory is 7.1 GB. [2018-10-23 23:49:08,920 INFO L168 Benchmark]: Boogie Procedure Inliner took 359.87 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 702.0 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -824.9 MB). Peak memory consumption was 40.4 MB. Max. memory is 7.1 GB. [2018-10-23 23:49:08,922 INFO L168 Benchmark]: Boogie Preprocessor took 161.61 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB. [2018-10-23 23:49:08,922 INFO L168 Benchmark]: RCFGBuilder took 5464.72 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 246.7 MB). Peak memory consumption was 246.7 MB. Max. memory is 7.1 GB. [2018-10-23 23:49:08,924 INFO L168 Benchmark]: TraceAbstraction took 259393.03 ms. Allocated memory was 2.2 GB in the beginning and 3.6 GB in the end (delta: 1.5 GB). Free memory was 1.8 GB in the beginning and 2.8 GB in the end (delta: -953.5 MB). Peak memory consumption was 509.2 MB. Max. memory is 7.1 GB. [2018-10-23 23:49:08,938 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1124.89 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 87.2 MB). Peak memory consumption was 87.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 359.87 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 702.0 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -824.9 MB). Peak memory consumption was 40.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 161.61 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5464.72 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 246.7 MB). Peak memory consumption was 246.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 259393.03 ms. Allocated memory was 2.2 GB in the beginning and 3.6 GB in the end (delta: 1.5 GB). Free memory was 1.8 GB in the beginning and 2.8 GB in the end (delta: -953.5 MB). Peak memory consumption was 509.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1521]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1521). Cancelled while BasicCegarLoop was analyzing trace of length 200 with TraceHistMax 3,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 8 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 259.2s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 18.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1546 SDtfs, 3239 SDslu, 955 SDs, 0 SdLazy, 6710 SolverSat, 955 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 14.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 10 SyntacticMatches, 6 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11840occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 233.3s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 5 MinimizatonAttempts, 571 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 908 NumberOfCodeBlocks, 908 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 903 ConstructedInterpolants, 0 QuantifiedInterpolants, 558804 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 51/51 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown