java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label59_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 13:10:39,309 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 13:10:39,314 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 13:10:39,332 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 13:10:39,332 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 13:10:39,336 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 13:10:39,338 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 13:10:39,341 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 13:10:39,345 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 13:10:39,347 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 13:10:39,356 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 13:10:39,356 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 13:10:39,357 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 13:10:39,358 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 13:10:39,362 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 13:10:39,366 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 13:10:39,367 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 13:10:39,369 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 13:10:39,371 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 13:10:39,373 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 13:10:39,374 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 13:10:39,376 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 13:10:39,378 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 13:10:39,378 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 13:10:39,378 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 13:10:39,379 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 13:10:39,381 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 13:10:39,381 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 13:10:39,382 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 13:10:39,383 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 13:10:39,384 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 13:10:39,384 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 13:10:39,385 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 13:10:39,385 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 13:10:39,386 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 13:10:39,387 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 13:10:39,387 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-11-07 13:10:39,407 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 13:10:39,407 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 13:10:39,408 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 13:10:39,409 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 13:10:39,409 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 13:10:39,409 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 13:10:39,409 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 13:10:39,410 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 13:10:39,410 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 13:10:39,410 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 13:10:39,410 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 13:10:39,410 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 13:10:39,411 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 13:10:39,411 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 13:10:39,412 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 13:10:39,412 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 13:10:39,412 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 13:10:39,412 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 13:10:39,412 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 13:10:39,413 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 13:10:39,413 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 13:10:39,413 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 13:10:39,413 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 13:10:39,414 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 13:10:39,414 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 13:10:39,414 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 13:10:39,414 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 13:10:39,414 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 13:10:39,415 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 13:10:39,415 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 13:10:39,415 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 13:10:39,415 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 13:10:39,416 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 13:10:39,416 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 13:10:39,488 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 13:10:39,504 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 13:10:39,509 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 13:10:39,511 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 13:10:39,511 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 13:10:39,512 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label59_true-unreach-call.c [2018-11-07 13:10:39,583 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74c190490/9bc384a57ad047f288cfd02ba67d94f8/FLAGff3793ae8 [2018-11-07 13:10:40,271 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 13:10:40,272 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label59_true-unreach-call.c [2018-11-07 13:10:40,293 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74c190490/9bc384a57ad047f288cfd02ba67d94f8/FLAGff3793ae8 [2018-11-07 13:10:40,312 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74c190490/9bc384a57ad047f288cfd02ba67d94f8 [2018-11-07 13:10:40,322 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 13:10:40,323 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 13:10:40,324 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 13:10:40,325 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 13:10:40,329 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 13:10:40,330 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:10:40" (1/1) ... [2018-11-07 13:10:40,333 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f868d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:10:40, skipping insertion in model container [2018-11-07 13:10:40,333 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:10:40" (1/1) ... [2018-11-07 13:10:40,344 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 13:10:40,429 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 13:10:41,290 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 13:10:41,298 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 13:10:41,540 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 13:10:41,565 INFO L193 MainTranslator]: Completed translation [2018-11-07 13:10:41,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:10:41 WrapperNode [2018-11-07 13:10:41,566 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 13:10:41,567 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 13:10:41,567 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 13:10:41,567 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 13:10:41,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:10:41" (1/1) ... [2018-11-07 13:10:41,767 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:10:41" (1/1) ... [2018-11-07 13:10:41,782 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 13:10:41,783 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 13:10:41,783 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 13:10:41,783 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 13:10:41,796 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:10:41" (1/1) ... [2018-11-07 13:10:41,796 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:10:41" (1/1) ... [2018-11-07 13:10:41,811 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:10:41" (1/1) ... [2018-11-07 13:10:41,811 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:10:41" (1/1) ... [2018-11-07 13:10:41,897 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:10:41" (1/1) ... [2018-11-07 13:10:41,928 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:10:41" (1/1) ... [2018-11-07 13:10:41,943 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:10:41" (1/1) ... [2018-11-07 13:10:41,966 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 13:10:41,968 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 13:10:41,968 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 13:10:41,968 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 13:10:41,970 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:10:41" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 13:10:42,041 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 13:10:42,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 13:10:42,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 13:10:42,042 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 13:10:42,042 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 13:10:42,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 13:10:42,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 13:10:42,043 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 13:10:42,043 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 13:10:47,224 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 13:10:47,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:10:47 BoogieIcfgContainer [2018-11-07 13:10:47,229 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 13:10:47,232 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 13:10:47,233 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 13:10:47,236 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 13:10:47,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:10:40" (1/3) ... [2018-11-07 13:10:47,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75dc092d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:10:47, skipping insertion in model container [2018-11-07 13:10:47,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:10:41" (2/3) ... [2018-11-07 13:10:47,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75dc092d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:10:47, skipping insertion in model container [2018-11-07 13:10:47,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:10:47" (3/3) ... [2018-11-07 13:10:47,242 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label59_true-unreach-call.c [2018-11-07 13:10:47,254 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 13:10:47,266 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 13:10:47,286 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 13:10:47,338 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 13:10:47,339 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 13:10:47,339 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 13:10:47,339 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 13:10:47,339 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 13:10:47,340 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 13:10:47,340 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 13:10:47,340 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 13:10:47,374 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-11-07 13:10:47,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-11-07 13:10:47,393 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 13:10:47,397 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, 1, 1, 1] [2018-11-07 13:10:47,399 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 13:10:47,408 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 13:10:47,408 INFO L82 PathProgramCache]: Analyzing trace with hash -209089196, now seen corresponding path program 1 times [2018-11-07 13:10:47,411 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 13:10:47,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 13:10:47,464 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 13:10:47,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 13:10:47,464 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 13:10:47,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 13:10:48,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 13:10:48,656 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 13:10:48,656 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 13:10:48,656 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 13:10:48,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 13:10:48,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 13:10:48,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 13:10:48,697 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 4 states. [2018-11-07 13:10:52,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 13:10:52,242 INFO L93 Difference]: Finished difference Result 1084 states and 1945 transitions. [2018-11-07 13:10:52,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 13:10:52,244 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 181 [2018-11-07 13:10:52,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 13:10:52,321 INFO L225 Difference]: With dead ends: 1084 [2018-11-07 13:10:52,322 INFO L226 Difference]: Without dead ends: 766 [2018-11-07 13:10:52,330 INFO L604 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 [2018-11-07 13:10:52,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2018-11-07 13:10:52,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 524. [2018-11-07 13:10:52,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 524 states. [2018-11-07 13:10:52,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 918 transitions. [2018-11-07 13:10:52,445 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 918 transitions. Word has length 181 [2018-11-07 13:10:52,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 13:10:52,447 INFO L480 AbstractCegarLoop]: Abstraction has 524 states and 918 transitions. [2018-11-07 13:10:52,447 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 13:10:52,447 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 918 transitions. [2018-11-07 13:10:52,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-11-07 13:10:52,456 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 13:10:52,456 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, 1, 1, 1] [2018-11-07 13:10:52,456 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 13:10:52,457 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 13:10:52,457 INFO L82 PathProgramCache]: Analyzing trace with hash -588288187, now seen corresponding path program 1 times [2018-11-07 13:10:52,457 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 13:10:52,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 13:10:52,459 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 13:10:52,459 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 13:10:52,459 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 13:10:52,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 13:10:52,786 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 13:10:52,786 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 13:10:52,786 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 13:10:52,786 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 13:10:52,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 13:10:52,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 13:10:52,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 13:10:52,789 INFO L87 Difference]: Start difference. First operand 524 states and 918 transitions. Second operand 5 states. [2018-11-07 13:10:55,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 13:10:55,884 INFO L93 Difference]: Finished difference Result 1614 states and 2930 transitions. [2018-11-07 13:10:55,893 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 13:10:55,893 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 192 [2018-11-07 13:10:55,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 13:10:55,903 INFO L225 Difference]: With dead ends: 1614 [2018-11-07 13:10:55,903 INFO L226 Difference]: Without dead ends: 1096 [2018-11-07 13:10:55,907 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 13:10:55,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1096 states. [2018-11-07 13:10:55,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1096 to 1073. [2018-11-07 13:10:55,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1073 states. [2018-11-07 13:10:55,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1073 states to 1073 states and 1769 transitions. [2018-11-07 13:10:55,996 INFO L78 Accepts]: Start accepts. Automaton has 1073 states and 1769 transitions. Word has length 192 [2018-11-07 13:10:55,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 13:10:55,997 INFO L480 AbstractCegarLoop]: Abstraction has 1073 states and 1769 transitions. [2018-11-07 13:10:55,997 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 13:10:55,997 INFO L276 IsEmpty]: Start isEmpty. Operand 1073 states and 1769 transitions. [2018-11-07 13:10:56,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-11-07 13:10:56,005 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 13:10:56,006 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, 1, 1, 1] [2018-11-07 13:10:56,006 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 13:10:56,006 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 13:10:56,007 INFO L82 PathProgramCache]: Analyzing trace with hash 1719938640, now seen corresponding path program 1 times [2018-11-07 13:10:56,007 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 13:10:56,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 13:10:56,009 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 13:10:56,009 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 13:10:56,009 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 13:10:56,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 13:10:56,368 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 13:10:56,368 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 13:10:56,368 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 13:10:56,369 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 13:10:56,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 13:10:56,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 13:10:56,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 13:10:56,371 INFO L87 Difference]: Start difference. First operand 1073 states and 1769 transitions. Second operand 3 states. [2018-11-07 13:11:00,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 13:11:00,514 INFO L93 Difference]: Finished difference Result 3104 states and 5262 transitions. [2018-11-07 13:11:00,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 13:11:00,517 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 194 [2018-11-07 13:11:00,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 13:11:00,535 INFO L225 Difference]: With dead ends: 3104 [2018-11-07 13:11:00,536 INFO L226 Difference]: Without dead ends: 2037 [2018-11-07 13:11:00,544 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 13:11:00,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2037 states. [2018-11-07 13:11:00,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2037 to 2030. [2018-11-07 13:11:00,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2030 states. [2018-11-07 13:11:00,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2030 states to 2030 states and 3225 transitions. [2018-11-07 13:11:00,621 INFO L78 Accepts]: Start accepts. Automaton has 2030 states and 3225 transitions. Word has length 194 [2018-11-07 13:11:00,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 13:11:00,622 INFO L480 AbstractCegarLoop]: Abstraction has 2030 states and 3225 transitions. [2018-11-07 13:11:00,622 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 13:11:00,622 INFO L276 IsEmpty]: Start isEmpty. Operand 2030 states and 3225 transitions. [2018-11-07 13:11:00,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-11-07 13:11:00,630 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 13:11:00,631 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2018-11-07 13:11:00,631 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 13:11:00,631 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 13:11:00,632 INFO L82 PathProgramCache]: Analyzing trace with hash 284836524, now seen corresponding path program 1 times [2018-11-07 13:11:00,632 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 13:11:00,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 13:11:00,633 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 13:11:00,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 13:11:00,633 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 13:11:00,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 13:11:00,871 WARN L179 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-11-07 13:11:01,020 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 13:11:01,021 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 13:11:01,021 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 13:11:01,022 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 203 with the following transitions: [2018-11-07 13:11:01,025 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [12], [13], [16], [17], [21], [25], [29], [33], [37], [41], [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], [889], [897], [905], [909], [911], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 13:11:01,089 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 13:11:01,091 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 13:11:22,115 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 13:11:22,117 INFO L272 AbstractInterpreter]: Visited 182 different actions 182 times. Never merged. Never widened. Never found a fixpoint. Largest state had 88 variables. [2018-11-07 13:11:22,153 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 13:11:22,153 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 13:11:34,259 INFO L227 lantSequenceWeakener]: Weakened 191 states. On average, predicates are now at 73% of their original sizes. [2018-11-07 13:11:34,260 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 13:11:35,406 INFO L415 sIntCurrentIteration]: We unified 201 AI predicates to 201 [2018-11-07 13:11:35,406 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 13:11:35,407 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 13:11:35,407 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [25] imperfect sequences [6] total 29 [2018-11-07 13:11:35,407 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 13:11:35,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-11-07 13:11:35,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-11-07 13:11:35,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=467, Unknown=0, NotChecked=0, Total=600 [2018-11-07 13:11:35,409 INFO L87 Difference]: Start difference. First operand 2030 states and 3225 transitions. Second operand 25 states. [2018-11-07 13:12:54,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 13:12:54,480 INFO L93 Difference]: Finished difference Result 4264 states and 6779 transitions. [2018-11-07 13:12:54,480 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 13:12:54,480 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 202 [2018-11-07 13:12:54,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 13:12:54,492 INFO L225 Difference]: With dead ends: 4264 [2018-11-07 13:12:54,492 INFO L226 Difference]: Without dead ends: 2240 [2018-11-07 13:12:54,498 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 204 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=182, Invalid=574, Unknown=0, NotChecked=0, Total=756 [2018-11-07 13:12:54,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2240 states. [2018-11-07 13:12:54,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2240 to 2238. [2018-11-07 13:12:54,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2238 states. [2018-11-07 13:12:54,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2238 states to 2238 states and 3442 transitions. [2018-11-07 13:12:54,557 INFO L78 Accepts]: Start accepts. Automaton has 2238 states and 3442 transitions. Word has length 202 [2018-11-07 13:12:54,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 13:12:54,557 INFO L480 AbstractCegarLoop]: Abstraction has 2238 states and 3442 transitions. [2018-11-07 13:12:54,557 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-11-07 13:12:54,557 INFO L276 IsEmpty]: Start isEmpty. Operand 2238 states and 3442 transitions. [2018-11-07 13:12:54,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-11-07 13:12:54,566 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 13:12:54,566 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2018-11-07 13:12:54,566 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 13:12:54,567 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 13:12:54,567 INFO L82 PathProgramCache]: Analyzing trace with hash -576572177, now seen corresponding path program 1 times [2018-11-07 13:12:54,567 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 13:12:54,568 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 13:12:54,568 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 13:12:54,568 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 13:12:54,568 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 13:12:54,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 13:12:54,812 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 28 proven. 17 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 13:12:54,812 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 13:12:54,812 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 13:12:54,812 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 215 with the following transitions: [2018-11-07 13:12:54,813 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [12], [13], [16], [17], [21], [24], [25], [29], [33], [37], [41], [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], [889], [897], [905], [909], [911], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 13:12:54,827 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 13:12:54,827 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 13:14:17,080 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 13:14:17,080 INFO L272 AbstractInterpreter]: Visited 186 different actions 368 times. Merged at 5 different actions 7 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-11-07 13:14:17,090 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 13:14:17,090 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 13:14:51,382 INFO L227 lantSequenceWeakener]: Weakened 108 states. On average, predicates are now at 75.68% of their original sizes. [2018-11-07 13:14:51,382 INFO L413 sIntCurrentIteration]: Unifying AI predicates Received shutdown request... [2018-11-07 13:14:51,787 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 13:14:51,792 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 13:14:51,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:14:51 BoogieIcfgContainer [2018-11-07 13:14:51,793 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 13:14:51,794 INFO L168 Benchmark]: Toolchain (without parser) took 251471.70 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -680.3 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-11-07 13:14:51,796 INFO L168 Benchmark]: CDTParser took 0.21 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. [2018-11-07 13:14:51,796 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1241.95 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: 97.8 MB). Peak memory consumption was 97.8 MB. Max. memory is 7.1 GB. [2018-11-07 13:14:51,797 INFO L168 Benchmark]: Boogie Procedure Inliner took 215.84 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 694.7 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -830.1 MB). Peak memory consumption was 28.2 MB. Max. memory is 7.1 GB. [2018-11-07 13:14:51,798 INFO L168 Benchmark]: Boogie Preprocessor took 184.42 ms. Allocated memory is still 2.2 GB. Free memory is still 2.1 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 13:14:51,799 INFO L168 Benchmark]: RCFGBuilder took 5261.31 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: 268.8 MB). Peak memory consumption was 268.8 MB. Max. memory is 7.1 GB. [2018-11-07 13:14:51,800 INFO L168 Benchmark]: TraceAbstraction took 244561.20 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 1.8 GB in the beginning and 2.0 GB in the end (delta: -216.7 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-11-07 13:14:51,805 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 1241.95 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: 97.8 MB). Peak memory consumption was 97.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 215.84 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 694.7 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -830.1 MB). Peak memory consumption was 28.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 184.42 ms. Allocated memory is still 2.2 GB. Free memory is still 2.1 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 5261.31 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: 268.8 MB). Peak memory consumption was 268.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 244561.20 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 1.8 GB in the beginning and 2.0 GB in the end (delta: -216.7 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1557]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1557). Cancelled while BasicCegarLoop was analyzing trace of length 215 with TraceHistMax 4,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 18 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 244.4s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 90.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1116 SDtfs, 2755 SDslu, 1166 SDs, 0 SdLazy, 5306 SolverSat, 808 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 72.1s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 223 GetRequests, 187 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2238occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 103.4s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9989580861535451 AbsIntWeakeningRatio, 0.34057971014492755 AbsIntAvgWeakeningVarsNumRemoved, 34.51449275362319 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 4 MinimizatonAttempts, 274 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 769 NumberOfCodeBlocks, 769 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 765 ConstructedInterpolants, 0 QuantifiedInterpolants, 479300 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 34/38 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown