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_label23_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 19:42:40,246 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 19:42:40,251 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 19:42:40,270 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 19:42:40,270 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 19:42:40,272 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 19:42:40,273 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 19:42:40,278 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 19:42:40,281 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 19:42:40,288 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 19:42:40,292 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 19:42:40,292 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 19:42:40,294 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 19:42:40,295 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 19:42:40,296 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 19:42:40,297 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 19:42:40,298 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 19:42:40,299 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 19:42:40,301 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 19:42:40,303 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 19:42:40,304 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 19:42:40,305 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 19:42:40,308 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 19:42:40,308 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 19:42:40,308 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 19:42:40,309 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 19:42:40,310 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 19:42:40,311 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 19:42:40,312 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 19:42:40,313 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 19:42:40,313 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 19:42:40,314 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 19:42:40,314 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 19:42:40,314 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 19:42:40,315 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 19:42:40,316 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 19:42:40,316 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 [2018-10-24 19:42:40,340 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 19:42:40,340 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 19:42:40,341 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 19:42:40,341 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 19:42:40,341 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 19:42:40,342 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 19:42:40,342 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 19:42:40,342 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 19:42:40,342 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 19:42:40,342 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 19:42:40,343 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 19:42:40,346 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 19:42:40,347 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 19:42:40,347 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 19:42:40,347 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 19:42:40,347 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 19:42:40,348 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 19:42:40,348 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 19:42:40,348 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 19:42:40,348 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 19:42:40,348 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 19:42:40,351 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 19:42:40,351 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 19:42:40,351 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 19:42:40,351 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 19:42:40,352 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 19:42:40,352 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 19:42:40,352 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 19:42:40,352 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 19:42:40,353 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 19:42:40,353 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 19:42:40,353 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 19:42:40,353 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 19:42:40,353 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 19:42:40,440 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 19:42:40,459 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 19:42:40,465 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 19:42:40,466 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 19:42:40,467 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 19:42:40,468 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label23_true-unreach-call.c [2018-10-24 19:42:40,542 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4818ec348/dfdf204005b344868ca4b12d10630acb/FLAG3bb0b4c7e [2018-10-24 19:42:41,196 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 19:42:41,197 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label23_true-unreach-call.c [2018-10-24 19:42:41,219 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4818ec348/dfdf204005b344868ca4b12d10630acb/FLAG3bb0b4c7e [2018-10-24 19:42:41,238 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4818ec348/dfdf204005b344868ca4b12d10630acb [2018-10-24 19:42:41,253 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 19:42:41,255 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 19:42:41,256 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 19:42:41,257 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 19:42:41,261 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 19:42:41,263 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:42:41" (1/1) ... [2018-10-24 19:42:41,267 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bedfbfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:42:41, skipping insertion in model container [2018-10-24 19:42:41,268 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:42:41" (1/1) ... [2018-10-24 19:42:41,281 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 19:42:41,393 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 19:42:42,295 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 19:42:42,302 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 19:42:42,658 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 19:42:42,686 INFO L193 MainTranslator]: Completed translation [2018-10-24 19:42:42,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:42:42 WrapperNode [2018-10-24 19:42:42,687 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 19:42:42,689 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 19:42:42,689 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 19:42:42,690 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 19:42:42,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:42:42" (1/1) ... [2018-10-24 19:42:42,771 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:42:42" (1/1) ... [2018-10-24 19:42:43,095 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 19:42:43,095 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 19:42:43,096 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 19:42:43,096 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 19:42:43,107 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:42:42" (1/1) ... [2018-10-24 19:42:43,108 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:42:42" (1/1) ... [2018-10-24 19:42:43,117 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:42:42" (1/1) ... [2018-10-24 19:42:43,118 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:42:42" (1/1) ... [2018-10-24 19:42:43,177 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:42:42" (1/1) ... [2018-10-24 19:42:43,195 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:42:42" (1/1) ... [2018-10-24 19:42:43,215 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:42:42" (1/1) ... [2018-10-24 19:42:43,235 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 19:42:43,236 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 19:42:43,236 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 19:42:43,236 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 19:42:43,238 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:42:42" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 19:42:43,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 19:42:43,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 19:42:43,321 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 19:42:43,321 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 19:42:43,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 19:42:43,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 19:42:43,322 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 19:42:43,322 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 19:42:48,973 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 19:42:48,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:42:48 BoogieIcfgContainer [2018-10-24 19:42:48,975 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 19:42:48,976 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 19:42:48,976 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 19:42:48,982 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 19:42:48,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 07:42:41" (1/3) ... [2018-10-24 19:42:48,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@485e485f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:42:48, skipping insertion in model container [2018-10-24 19:42:48,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:42:42" (2/3) ... [2018-10-24 19:42:48,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@485e485f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:42:48, skipping insertion in model container [2018-10-24 19:42:48,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:42:48" (3/3) ... [2018-10-24 19:42:48,987 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label23_true-unreach-call.c [2018-10-24 19:42:49,001 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 19:42:49,011 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 19:42:49,031 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 19:42:49,079 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 19:42:49,080 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 19:42:49,080 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 19:42:49,080 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 19:42:49,080 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 19:42:49,081 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 19:42:49,081 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 19:42:49,081 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 19:42:49,129 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-10-24 19:42:49,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-10-24 19:42:49,163 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:42:49,167 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:42:49,172 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:42:49,183 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:42:49,184 INFO L82 PathProgramCache]: Analyzing trace with hash -1250104911, now seen corresponding path program 1 times [2018-10-24 19:42:49,189 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:42:49,260 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:42:49,260 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:42:49,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:42:49,261 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:42:49,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:42:50,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:42:50,491 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:42:50,491 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 19:42:50,492 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:42:50,499 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 19:42:50,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 19:42:50,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 19:42:50,519 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 4 states. [2018-10-24 19:42:54,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:42:54,178 INFO L93 Difference]: Finished difference Result 1084 states and 1945 transitions. [2018-10-24 19:42:54,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 19:42:54,181 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 178 [2018-10-24 19:42:54,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:42:54,209 INFO L225 Difference]: With dead ends: 1084 [2018-10-24 19:42:54,209 INFO L226 Difference]: Without dead ends: 766 [2018-10-24 19:42:54,218 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 19:42:54,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2018-10-24 19:42:54,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 524. [2018-10-24 19:42:54,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 524 states. [2018-10-24 19:42:54,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 918 transitions. [2018-10-24 19:42:54,334 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 918 transitions. Word has length 178 [2018-10-24 19:42:54,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:42:54,336 INFO L481 AbstractCegarLoop]: Abstraction has 524 states and 918 transitions. [2018-10-24 19:42:54,336 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 19:42:54,336 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 918 transitions. [2018-10-24 19:42:54,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2018-10-24 19:42:54,344 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:42:54,345 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:42:54,345 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:42:54,345 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:42:54,346 INFO L82 PathProgramCache]: Analyzing trace with hash -217139872, now seen corresponding path program 1 times [2018-10-24 19:42:54,346 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:42:54,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:42:54,348 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:42:54,348 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:42:54,348 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:42:54,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:42:54,711 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:42:54,712 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:42:54,712 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 19:42:54,712 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:42:54,715 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 19:42:54,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 19:42:54,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 19:42:54,716 INFO L87 Difference]: Start difference. First operand 524 states and 918 transitions. Second operand 5 states. [2018-10-24 19:42:57,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:42:57,895 INFO L93 Difference]: Finished difference Result 1614 states and 2930 transitions. [2018-10-24 19:42:57,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 19:42:57,898 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 189 [2018-10-24 19:42:57,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:42:57,912 INFO L225 Difference]: With dead ends: 1614 [2018-10-24 19:42:57,913 INFO L226 Difference]: Without dead ends: 1096 [2018-10-24 19:42:57,918 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 19:42:57,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1096 states. [2018-10-24 19:42:58,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1096 to 1073. [2018-10-24 19:42:58,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1073 states. [2018-10-24 19:42:58,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1073 states to 1073 states and 1769 transitions. [2018-10-24 19:42:58,012 INFO L78 Accepts]: Start accepts. Automaton has 1073 states and 1769 transitions. Word has length 189 [2018-10-24 19:42:58,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:42:58,013 INFO L481 AbstractCegarLoop]: Abstraction has 1073 states and 1769 transitions. [2018-10-24 19:42:58,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 19:42:58,013 INFO L276 IsEmpty]: Start isEmpty. Operand 1073 states and 1769 transitions. [2018-10-24 19:42:58,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2018-10-24 19:42:58,022 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:42:58,023 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:42:58,023 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:42:58,024 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:42:58,024 INFO L82 PathProgramCache]: Analyzing trace with hash 1010977333, now seen corresponding path program 1 times [2018-10-24 19:42:58,024 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:42:58,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:42:58,026 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:42:58,026 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:42:58,026 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:42:58,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:42:58,487 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:42:58,488 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:42:58,488 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 19:42:58,488 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:42:58,489 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 19:42:58,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 19:42:58,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 19:42:58,493 INFO L87 Difference]: Start difference. First operand 1073 states and 1769 transitions. Second operand 3 states. [2018-10-24 19:43:01,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:43:01,540 INFO L93 Difference]: Finished difference Result 3100 states and 5252 transitions. [2018-10-24 19:43:01,547 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 19:43:01,547 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 191 [2018-10-24 19:43:01,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:43:01,567 INFO L225 Difference]: With dead ends: 3100 [2018-10-24 19:43:01,568 INFO L226 Difference]: Without dead ends: 2033 [2018-10-24 19:43:01,574 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 [2018-10-24 19:43:01,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2033 states. [2018-10-24 19:43:01,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2033 to 2030. [2018-10-24 19:43:01,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2030 states. [2018-10-24 19:43:01,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2030 states to 2030 states and 3203 transitions. [2018-10-24 19:43:01,674 INFO L78 Accepts]: Start accepts. Automaton has 2030 states and 3203 transitions. Word has length 191 [2018-10-24 19:43:01,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:43:01,675 INFO L481 AbstractCegarLoop]: Abstraction has 2030 states and 3203 transitions. [2018-10-24 19:43:01,675 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 19:43:01,675 INFO L276 IsEmpty]: Start isEmpty. Operand 2030 states and 3203 transitions. [2018-10-24 19:43:01,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2018-10-24 19:43:01,686 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:43:01,686 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:43:01,687 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:43:01,687 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:43:01,687 INFO L82 PathProgramCache]: Analyzing trace with hash 1402232081, now seen corresponding path program 1 times [2018-10-24 19:43:01,687 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:43:01,689 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:43:01,689 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:43:01,689 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:43:01,690 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:43:01,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:43:02,012 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2018-10-24 19:43:02,124 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:43:02,125 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:43:02,125 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 19:43:02,125 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:43:02,126 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 19:43:02,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 19:43:02,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-24 19:43:02,127 INFO L87 Difference]: Start difference. First operand 2030 states and 3203 transitions. Second operand 6 states. [2018-10-24 19:43:04,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:43:04,948 INFO L93 Difference]: Finished difference Result 5883 states and 9834 transitions. [2018-10-24 19:43:04,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 19:43:04,953 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 193 [2018-10-24 19:43:04,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:43:04,983 INFO L225 Difference]: With dead ends: 5883 [2018-10-24 19:43:04,984 INFO L226 Difference]: Without dead ends: 3859 [2018-10-24 19:43:04,994 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-24 19:43:04,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3859 states. [2018-10-24 19:43:05,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3859 to 3792. [2018-10-24 19:43:05,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3792 states. [2018-10-24 19:43:05,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3792 states to 3792 states and 5638 transitions. [2018-10-24 19:43:05,178 INFO L78 Accepts]: Start accepts. Automaton has 3792 states and 5638 transitions. Word has length 193 [2018-10-24 19:43:05,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:43:05,179 INFO L481 AbstractCegarLoop]: Abstraction has 3792 states and 5638 transitions. [2018-10-24 19:43:05,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 19:43:05,179 INFO L276 IsEmpty]: Start isEmpty. Operand 3792 states and 5638 transitions. [2018-10-24 19:43:05,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-10-24 19:43:05,191 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:43:05,191 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:43:05,191 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:43:05,192 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:43:05,192 INFO L82 PathProgramCache]: Analyzing trace with hash 943603689, now seen corresponding path program 1 times [2018-10-24 19:43:05,192 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:43:05,193 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:43:05,193 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:43:05,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:43:05,194 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:43:05,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:43:05,697 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:43:05,697 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 19:43:05,697 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 19:43:05,699 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 209 with the following transitions: [2018-10-24 19:43:05,701 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], [817], [825], [833], [841], [849], [857], [865], [873], [881], [885], [887], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-24 19:43:05,828 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 19:43:05,829 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-10-24 19:47:13,205 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-10-24 19:47:13,206 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-10-24 19:47:13,208 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-24 19:47:13,208 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 19:47:13,208 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 19:47:13,220 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:47:13,221 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 19:47:13,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:47:13,441 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 19:47:13,479 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-24 19:47:13,680 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 19:47:13,681 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 19:47:13,688 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 19:47:13,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 07:47:13 BoogieIcfgContainer [2018-10-24 19:47:13,690 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 19:47:13,691 INFO L168 Benchmark]: Toolchain (without parser) took 272437.10 ms. Allocated memory was 1.5 GB in the beginning and 3.4 GB in the end (delta: 1.9 GB). Free memory was 1.4 GB in the beginning and 2.4 GB in the end (delta: -985.0 MB). Peak memory consumption was 878.8 MB. Max. memory is 7.1 GB. [2018-10-24 19:47:13,692 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 19:47:13,693 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1431.29 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. [2018-10-24 19:47:13,694 INFO L168 Benchmark]: Boogie Procedure Inliner took 406.44 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 730.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -854.9 MB). Peak memory consumption was 40.4 MB. Max. memory is 7.1 GB. [2018-10-24 19:47:13,696 INFO L168 Benchmark]: Boogie Preprocessor took 139.92 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. [2018-10-24 19:47:13,697 INFO L168 Benchmark]: RCFGBuilder took 5739.13 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 253.9 MB). Peak memory consumption was 253.9 MB. Max. memory is 7.1 GB. [2018-10-24 19:47:13,699 INFO L168 Benchmark]: TraceAbstraction took 264713.81 ms. Allocated memory was 2.2 GB in the beginning and 3.4 GB in the end (delta: 1.1 GB). Free memory was 1.9 GB in the beginning and 2.4 GB in the end (delta: -485.3 MB). Peak memory consumption was 647.6 MB. Max. memory is 7.1 GB. [2018-10-24 19:47:13,708 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1431.29 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 406.44 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 730.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -854.9 MB). Peak memory consumption was 40.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 139.92 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5739.13 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 253.9 MB). Peak memory consumption was 253.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 264713.81 ms. Allocated memory was 2.2 GB in the beginning and 3.4 GB in the end (delta: 1.1 GB). Free memory was 1.9 GB in the beginning and 2.4 GB in the end (delta: -485.3 MB). Peak memory consumption was 647.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1548]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1548). Cancelled while BasicCegarLoop was analyzing trace of length 209 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, 264.6s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 12.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 917 SDtfs, 2758 SDslu, 499 SDs, 0 SdLazy, 4391 SolverSat, 1089 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 10.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3792occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 247.5s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 4 MinimizatonAttempts, 335 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 751 NumberOfCodeBlocks, 751 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 747 ConstructedInterpolants, 0 QuantifiedInterpolants, 489107 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 28/28 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown